fix(style): migrate from deprecated github.com/pkg/errors package (#1071)

* refactor: migrate error packages from pkg/errors to stdlib

Replace github.com/pkg/errors with Go standard library error handling
in foundation error packages:

- internal/datastore/errors: errors.Wrap -> fmt.Errorf with %w
- internal/errors: errors.As -> stdlib errors.As
- controllers/soot/controllers/errors: errors.New -> stdlib errors.New

Part 1 of 4 in the pkg/errors migration.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* refactor: migrate datastore package from pkg/errors to stdlib

Replace github.com/pkg/errors with Go standard library error handling
in the datastore layer:

- connection.go: errors.Wrap -> fmt.Errorf with %w
- datastore.go: errors.Wrap -> fmt.Errorf with %w
- etcd.go: goerrors alias removed, use stdlib errors.As
- nats.go: errors.Wrap/Is/New -> stdlib equivalents
- postgresql.go: goerrors.Wrap -> fmt.Errorf with %w

Part 2 of 4 in the pkg/errors migration.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* refactor: migrate internal packages from pkg/errors to stdlib (partial)

Replace github.com/pkg/errors with Go standard library error handling
in internal packages:

- internal/builders/controlplane: errors.Wrap -> fmt.Errorf
- internal/crypto: errors.Wrap -> fmt.Errorf
- internal/kubeadm: errors.Wrap/Wrapf -> fmt.Errorf
- internal/upgrade: errors.Wrap -> fmt.Errorf
- internal/webhook: errors.Wrap -> fmt.Errorf

Part 3 of 4 in the pkg/errors migration.

Remaining files: internal/resources/*.go (8 files, 42 occurrences)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* refactor(resources): migrate from pkg/errors to stdlib

Replace github.com/pkg/errors with Go standard library:
- errors.Wrap(err, msg) → fmt.Errorf("msg: %w", err)
- errors.New(msg) → errors.New(msg)

Files migrated:
- internal/resources/kubeadm_phases.go
- internal/resources/kubeadm_upgrade.go
- internal/resources/kubeadm_utils.go
- internal/resources/datastore/datastore_multitenancy.go
- internal/resources/datastore/datastore_setup.go
- internal/resources/datastore/datastore_storage_config.go
- internal/resources/addons/coredns.go
- internal/resources/addons/kube_proxy.go

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* refactor(controllers): migrate from pkg/errors to stdlib

Replace github.com/pkg/errors with Go standard library:
- errors.Wrap(err, msg) → fmt.Errorf("msg: %w", err)
- errors.New(msg) → errors.New(msg) (stdlib)
- errors.Is/As → errors.Is/As (stdlib)

Files migrated:
- controllers/datastore_controller.go
- controllers/kubeconfiggenerator_controller.go
- controllers/tenantcontrolplane_controller.go
- controllers/telemetry_controller.go
- controllers/certificate_lifecycle_controller.go

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* refactor(soot): migrate from pkg/errors to stdlib

Replace github.com/pkg/errors with Go standard library:
- errors.Is() now uses stdlib errors.Is()

Files migrated:
- controllers/soot/controllers/kubeproxy.go
- controllers/soot/controllers/migrate.go
- controllers/soot/controllers/coredns.go
- controllers/soot/controllers/konnectivity.go
- controllers/soot/controllers/kubeadm_phase.go

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* refactor(api,cmd): migrate from pkg/errors to stdlib

Replace github.com/pkg/errors with Go standard library:
- errors.Wrap(err, msg) → fmt.Errorf("msg: %w", err)

Files migrated:
- api/v1alpha1/tenantcontrolplane_funcs.go
- cmd/utils/k8s_version.go

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* chore: run go mod tidy after pkg/errors migration

The github.com/pkg/errors package moved from direct to indirect
dependency. It remains as an indirect dependency because other
packages in the dependency tree still use it.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* fix(datastore): use errors.Is for sentinel error comparison

The stdlib errors.As expects a pointer to a concrete error type, not
a pointer to an error value. For comparing against sentinel errors
like rpctypes.ErrGRPCUserNotFound, errors.Is should be used instead.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* fix: resolve golangci-lint errors

- Fix GCI import formatting (remove extra blank lines between groups)
- Use errors.Is instead of errors.As for mutex sentinel errors

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* fix(errors): use proper variable declarations for errors.As

The errors.As function requires a pointer to an assignable variable,
not a pointer to a composite literal. The previous pattern
`errors.As(err, &SomeError{})` creates a pointer to a temporary value
which errors.As cannot reliably use for assignment.

This fix declares proper variables for each error type and passes
their addresses to errors.As, ensuring correct error chain matching.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* fix(datastore/etcd): use rpctypes.Error() for gRPC error comparison

The etcd gRPC status errors (ErrGRPCUserNotFound, ErrGRPCRoleNotFound)
cannot be compared directly using errors.Is() because they are wrapped
in gRPC status errors during transmission.

The etcd rpctypes package provides:
- ErrGRPC* constants: server-side gRPC status errors
- Err* constants (without GRPC prefix): client-side comparable errors
- Error() function: converts gRPC errors to comparable EtcdError values

The correct pattern is to use rpctypes.Error(err) to normalize the
received error, then compare against client-side error constants
like rpctypes.ErrUserNotFound.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

.github/release-template.md

@@ -0,0 +1,10 @@
+This edge release can be pulled from Docker Hub as follows:
+
+```
+docker pull clastix/kamaji:$TAG
+```
+
+> As from the v1.0.0 release, CLASTIX no longer provides stable release artefacts.
+>
+> Stable release artefacts are offered on a subscription basis by CLASTIX, the main Kamaji project contributor.
+> Learn more from CLASTIX's [Support](https://clastix.io/support/) section.

.github/workflows/ci.yaml

@@ -11,8 +11,8 @@ jobs:
     name: integration
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-go@v5
+      - uses: actions/checkout@v6
+      - uses: actions/setup-go@v6
         with:
           go-version-file: go.mod
       - run: make test
@@ -20,8 +20,8 @@ jobs:
     name: lint
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-go@v5
+      - uses: actions/checkout@v6
+      - uses: actions/setup-go@v6
         with:
           go-version-file: go.mod
       - name: Run golangci-lint
@@ -36,10 +36,10 @@ jobs:
     name: diff
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
-      - uses: actions/setup-go@v5
+      - uses: actions/setup-go@v6
         with:
           go-version-file: go.mod
       - run: make manifests

.github/workflows/e2e.yaml

@@ -4,7 +4,7 @@ on:
   push:
     branches: [ "*" ]
     paths:
-      - '.github/workflows/e2e.yml'
+      - '.github/workflows/e2e.yaml'
       - 'api/**'
       - 'charts/kamaji/**'
       - 'controllers/**'
@@ -18,7 +18,7 @@ on:
   pull_request:
     branches: [ "*" ]
     paths:
-      - '.github/workflows/e2e.yml'
+      - '.github/workflows/e2e.yaml'
       - 'api/**'
       - 'charts/kamaji/**'
       - 'controllers/**'
@@ -35,17 +35,23 @@ jobs:
     name: Kubernetes
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
-      - uses: actions/setup-go@v5
+      - uses: actions/setup-go@v6
         with:
-          go-version: '1.22'
-          check-latest: true
+          go-version-file: go.mod
+      - name: reclaim disk space from runner
+        run: |
+          sudo rm -rf /usr/share/dotnet /usr/local/lib/android /opt/ghc /opt/hostedtoolcache/CodeQL
       - run: |
           sudo apt-get update
           sudo apt-get install -y golang-cfssl
           sudo swapoff -a
           sudo modprobe br_netfilter
+      - name: install required Go tools
+        run: make kind ko helm ginkgo
+      - name: cleaning up go mod
+        run: go clean -modcache
       - name: e2e testing
         run: make e2e

.github/workflows/helm.yaml

@@ -11,16 +11,19 @@ jobs:
     name: diff
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
       - run: make -C charts/kamaji docs
-      - name: Checking if Helm docs is not aligned
+      - name: Checking if Kamaji Helm Chart docs is not aligned
+        run: if [[ $(git diff | wc -l) -gt 0 ]]; then echo ">>> Untracked changes have not been committed" && git --no-pager diff && exit 1; fi
+      - run: make -C charts/kamaji-crds docs
+      - name: Checking if Kamaji CRDs Helm Chart docs is not aligned
         run: if [[ $(git diff | wc -l) -gt 0 ]]; then echo ">>> Untracked changes have not been committed" && git --no-pager diff && exit 1; fi
   lint:
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: azure/setup-helm@v4
         with:
           version: 3.3.4
@@ -28,14 +31,16 @@ jobs:
         run: |-
           helm repo add clastix https://clastix.github.io/charts 
           helm dependency build ./charts/kamaji
-      - name: Linting Chart
+      - name: Linting Kamaji Helm Chart
         run: helm lint ./charts/kamaji
+      - name: Linting Kamaji CRDS Helm Chart
+        run: helm lint ./charts/kamaji-crds
   release:
     if: github.event_name == 'push' && github.ref == 'refs/heads/master'
     needs: [ "lint", "diff" ]
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Publish Helm chart
         uses: stefanprodan/helm-gh-pages@master
         with:

.github/workflows/ko-build.yml

@@ -7,15 +7,21 @@ on:
       - v*
     branches:
       - master
+  workflow_dispatch:
+    inputs:
+      tag:
+        description: "Tag to build"
+        required: true
+        type: string
 
 jobs:
   ko:
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
-      - uses: actions/setup-go@v5
+      - uses: actions/setup-go@v6
         with:
           go-version-file: go.mod
       - name: "ko: install"
@@ -25,7 +31,7 @@ jobs:
       - name: "ko: login to docker.io container registry"
         run: ./bin/ko login docker.io -u ${{ secrets.DOCKER_IO_USERNAME }} -p ${{ secrets.DOCKER_IO_TOKEN }}
       - name: "ko: build and push tag"
-        run: make VERSION=${{ github.ref_name }} KO_LOCAL=false KO_PUSH=true build
-        if: startsWith(github.ref, 'refs/tags/v') || startsWith(github.ref, 'refs/tags/edge-')
+        run: make VERSION=${{ github.event.inputs.tag }} KO_LOCAL=false KO_PUSH=true build
+        if: github.event_name == 'workflow_dispatch'
       - name: "ko: build and push latest"
         run: make VERSION=latest KO_LOCAL=false KO_PUSH=true build

.github/workflows/pr.yaml

@@ -8,7 +8,7 @@ jobs:
   semantic-pr-title:
     runs-on: ubuntu-22.04
     steps:
-      - uses: amannn/action-semantic-pull-request@v5
+      - uses: amannn/action-semantic-pull-request@v6
         with:
           types: |
             feat

.github/workflows/release.yml

@@ -0,0 +1,75 @@
+name: Weekly Edge Release
+
+on:
+  schedule:
+    - cron: '0 7 * * 1'  # Every Monday at 9 AM CET
+  workflow_dispatch:
+
+permissions:
+  contents: write
+
+jobs:
+  release:
+    runs-on: ubuntu-22.04
+    steps:
+      - uses: actions/checkout@v6
+        with:
+          fetch-depth: 0
+      - name: generating date metadata
+        id: date
+        run: |
+          CURRENT_DATE=$(date -u +'%Y-%m-%d')
+          YY=$(date -u +'%y')
+          M=$(date -u +'%_m' | sed 's/ //g')
+          FIRST_OF_MONTH=$(date -u -d "$CURRENT_DATE" +%Y-%m-01)
+          WEEK_NUM=$(( (($(date -u +%s) - $(date -u -d "$FIRST_OF_MONTH" +%s)) / 86400 + $(date -u -d "$FIRST_OF_MONTH" +%u) - 1) / 7 + 1 ))
+
+          echo "yy=$YY" >> $GITHUB_OUTPUT
+          echo "month=$M" >> $GITHUB_OUTPUT
+          echo "week=$WEEK_NUM" >> $GITHUB_OUTPUT
+          echo "date=$CURRENT_DATE" >> $GITHUB_OUTPUT
+      - name: generating tag metadata
+        id: tag
+        run: |
+          TAG="edge-${{ steps.date.outputs.yy }}.${{ steps.date.outputs.month }}.${{ steps.date.outputs.week }}"
+          echo "tag=$TAG" >> $GITHUB_OUTPUT
+      - name: generate release notes from template
+        run: |
+          export TAG="${{ steps.tag.outputs.tag }}"
+          envsubst < .github/release-template.md > release-notes.md
+      - name: generate release notes from template
+        run: |
+          export TAG="${{ steps.tag.outputs.tag }}"
+          envsubst < .github/release-template.md > release-notes-header.md
+      - name: generate GitHub release notes
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          gh release --repo "$GITHUB_REPOSITORY" \
+            create "${{ steps.tag.outputs.tag }}" \
+            --generate-notes \
+            --draft \
+            --title "temp" \
+            --notes "temp" > /dev/null || true
+          
+          gh release view "${{ steps.tag.outputs.tag }}" \
+            --json body --jq .body > auto-notes.md
+          
+          gh release delete "${{ steps.tag.outputs.tag }}" --yes || true
+      - name: combine notes
+        run: |
+          cat release-notes-header.md auto-notes.md > release-notes.md
+      - name: create GitHub release
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          gh release create "${{ steps.tag.outputs.tag }}" \
+            --title "${{ steps.tag.outputs.tag }}" \
+            --notes-file release-notes.md
+      - name: trigger container build workflow
+        env:
+          GH_TOKEN: ${{ secrets.WORKFLOW_TOKEN }}
+        run: |
+          gh workflow run "Container image build" \
+            --ref master \
+            -f tag="${{ steps.tag.outputs.tag }}"

ADOPTERS.md

@@ -8,11 +8,15 @@ Feel free to open a Pull-Request to get yours listed.
 | Type | Name | Since | Website | Use-Case |
 |:-|:-|:-|:-|:-|
 | Vendor | Aknostic | 2023 | [link](https://aknostic.com) | Aknostic is a cloud-native consultancy company using Kamaji to build a Kubernetes based PaaS. |
-| R&D | Aruba | 2024 | [link](https://www.aruba.it/home.aspx) | Aruba Cloud is an Italian Cloud Service Provider evaluating Kamaji to build and offer [Managed Kubernetes Service](https://my.arubacloud.com). |
+| Vendor | Aruba | 2025 | [link](https://www.arubacloud.com/) | Aruba Cloud is an Italian Cloud Service Provider using Kamaji to build and offer [Managed Kubernetes Service](https://my.arubacloud.com). |
 | Vendor | CBWS | 2025 | [link](https://cbws.nl) | CBWS is an European Cloud Provider using Kamaji to build and offer their [Managed Kubernetes Service](https://cbws.nl/cloud/kubernetes/). |
+| Vendor | Coredge | 2025 | [link](https://coredge.io/) | Coredge uses Kamaji in its K8saaS offering to save infrastructure costs in its Sovereign Cloud & AI Infrastructure Platform for end-user organisations. |
 | Vendor | DCloud | 2024 | [link](https://dcloud.co.id) | DCloud is an Indonesian Cloud Provider using Kamaji to build and offer [Managed Kubernetes Service](https://dcloud.co.id/dkubes.html). |
 | Vendor | Dinova | 2025 | [link](https://dinova.one/) | Dinova is an Italian cloud services provider that integrates Kamaji in its datacenters to offer fully managed Kubernetes clusters. |
+| Vendor | Hikube | 2024 | [link](https://hikube.cloud/) | Hikube.cloud is a Swiss sovereign cloud platform with triple replication across three Swiss datacenters, offering enterprise-grade infrastructure with full data sovereignty. |
 | End-user | KINX | 2024 | [link](https://kinx.net/?lang=en) | KINX is an Internet infrastructure service provider and will use kamaji for its new [Managed Kubernetes Service](https://kinx.net/service/cloud/kubernetes/intro/?lang=en). |
+| End-user | Namecheap | 2025 | [link](https://www.namecheap.com/) | Namecheap is an ICANN-accredited domain registrar and web hosting company that provides a wide range of internet-related services and uses Kamaji for both internal and external services. |
+| Vendor | Netalia | 2025 | [link](https://www.netalia.it) | Netalia uses Kamaji for the Italian cloud
 | Vendor | Netsons | 2023 | [link](https://www.netsons.com) | Netsons is an Italian hosting and cloud provider and uses Kamaji in its [Managed Kubernetes](https://www.netsons.com/kubernetes) offering. |
 | Vendor | NVIDIA | 2024 | [link](https://github.com/NVIDIA/doca-platform) | DOCA Platform Framework manages provisioning and service orchestration for NVIDIA Bluefield DPUs. |
 | R&D | Orange | 2024 | [link](https://gitlab.com/Orange-OpenSource/kanod) | Orange is a French telecommunications company using Kamaji for experimental research purpose, with Kanod research solution. |
@@ -28,6 +32,7 @@ Feel free to open a Pull-Request to get yours listed.
 | R&D | IONOS Cloud | 2024 | [link](https://cloud.ionos.com/) | IONOS Cloud is a German Cloud Provider evaluating Kamaji for its [Managed Kubernetes platform](https://cloud.ionos.com/managed/kubernetes). |
 | Vendor | OVHCloud | 2025 | [link](https://www.ovhcloud.com/) | OVHCloud is a European Cloud Provider that will use Kamaji for its Managed Kubernetes Service offer. |
 | Vendor | WOBCOM GmbH | 2024 | [link](https://www.wobcom.de/) | WOBCOM provides an [**Open Digital Platform**](https://www.wobcom.de/geschaeftskunden/odp/) solution for Smart Cities, which is provided for customers in a Managed Kubernetes provided by Kamaji. |
+| Vendor | Mistral AI | 2025 | [link](https://mistral.ai/products/mistral-compute) | Mistral provides a baremetal kubernetes service that uses Kamaji for control plane management. |
 
 ### Adopter Types
 

Makefile

@@ -73,7 +73,7 @@ help: ## Display this help.
 .PHONY: ko
 ko: $(KO) ## Download ko locally if necessary.
 $(KO): $(LOCALBIN)
-	test -s $(LOCALBIN)/ko || GOBIN=$(LOCALBIN) CGO_ENABLED=0 go install -ldflags="-s -w" github.com/google/ko@v0.14.1
+	test -s $(LOCALBIN)/ko || GOBIN=$(LOCALBIN) CGO_ENABLED=0 go install -ldflags="-s -w" github.com/google/ko@v0.18.1
 
 .PHONY: yq
 yq: $(YQ) ## Download yq locally if necessary.
@@ -98,7 +98,7 @@ $(KIND): $(LOCALBIN)
 .PHONY: controller-gen
 controller-gen: $(CONTROLLER_GEN) ## Download controller-gen locally if necessary.
 $(CONTROLLER_GEN): $(LOCALBIN)
-	test -s $(LOCALBIN)/controller-gen || GOBIN=$(LOCALBIN) CGO_ENABLED=0 go install -ldflags="-s -w" sigs.k8s.io/controller-tools/cmd/controller-gen@v0.16.1
+	test -s $(LOCALBIN)/controller-gen || GOBIN=$(LOCALBIN) CGO_ENABLED=0 go install -ldflags="-s -w" sigs.k8s.io/controller-tools/cmd/controller-gen@v0.20.0
 
 .PHONY: golangci-lint
 golangci-lint: $(GOLANGCI_LINT) ## Download golangci-lint locally if necessary.
@@ -129,9 +129,18 @@ webhook: controller-gen yq
 	$(YQ) -i 'map(.clientConfig.service.namespace |= "{{ .Release.Namespace }}")' ./charts/kamaji/controller-gen/validating-webhook.yaml
 
 crds: controller-gen yq
+	# kamaji chart
 	$(CONTROLLER_GEN) crd webhook paths="./..." output:stdout | $(YQ) 'select(documentIndex == 0)' > ./charts/kamaji/crds/kamaji.clastix.io_datastores.yaml
-	$(CONTROLLER_GEN) crd webhook paths="./..." output:stdout | $(YQ) 'select(documentIndex == 1)' > ./charts/kamaji/crds/kamaji.clastix.io_tenantcontrolplanes.yaml
+	$(CONTROLLER_GEN) crd webhook paths="./..." output:stdout | $(YQ) 'select(documentIndex == 1)' > ./charts/kamaji/crds/kamaji.clastix.io_kubeconfiggenerators.yaml
+	$(CONTROLLER_GEN) crd webhook paths="./..." output:stdout | $(YQ) 'select(documentIndex == 2)' > ./charts/kamaji/crds/kamaji.clastix.io_tenantcontrolplanes.yaml
 	$(YQ) -i '. *n load("./charts/kamaji/controller-gen/crd-conversion.yaml")' ./charts/kamaji/crds/kamaji.clastix.io_tenantcontrolplanes.yaml
+	# kamaji-crds chart
+	cp ./charts/kamaji/controller-gen/crd-conversion.yaml ./charts/kamaji-crds/hack/crd-conversion.yaml
+	$(YQ) '.spec' ./charts/kamaji/crds/kamaji.clastix.io_datastores.yaml > ./charts/kamaji-crds/hack/kamaji.clastix.io_datastores_spec.yaml
+	$(YQ) '.spec' ./charts/kamaji/crds/kamaji.clastix.io_tenantcontrolplanes.yaml > ./charts/kamaji-crds/hack/kamaji.clastix.io_tenantcontrolplanes_spec.yaml
+	$(YQ) '.spec' ./charts/kamaji/crds/kamaji.clastix.io_kubeconfiggenerators.yaml > ./charts/kamaji-crds/hack/kamaji.clastix.io_kubeconfiggenerators_spec.yaml
+	$(YQ) -i '.conversion.webhook.clientConfig.service.name = "{{ .Values.kamajiService }}"' ./charts/kamaji-crds/hack/kamaji.clastix.io_tenantcontrolplanes_spec.yaml
+	$(YQ) -i '.conversion.webhook.clientConfig.service.namespace = "{{ .Values.kamajiNamespace }}"' ./charts/kamaji-crds/hack/kamaji.clastix.io_tenantcontrolplanes_spec.yaml
 
 manifests: rbac webhook crds ## Generate WebhookConfiguration, ClusterRole and CustomResourceDefinition objects.
 
@@ -168,7 +177,7 @@ datastore-postgres:
 	$(MAKE) NAME=gold _datastore-postgres
 
 _datastore-etcd:
-	$(HELM) upgrade --install etcd-$(NAME) clastix/kamaji-etcd --create-namespace -n etcd-system --set datastore.enabled=true --set fullnameOverride=etcd-$(NAME)
+	$(HELM) upgrade --install etcd-$(NAME) clastix/kamaji-etcd --create-namespace -n $(NAMESPACE) --set datastore.enabled=true --set fullnameOverride=etcd-$(NAME) $(EXTRA_ARGS)
 
 _datastore-nats:
 	$(MAKE) NAME=$(NAME) NAMESPACE=nats-system -C deploy/kine/nats nats
@@ -177,9 +186,11 @@ _datastore-nats:
 datastore-etcd: helm
 	$(HELM) repo add clastix https://clastix.github.io/charts
 	$(HELM) repo update
-	$(MAKE) NAME=bronze _datastore-etcd
-	$(MAKE) NAME=silver _datastore-etcd
-	$(MAKE) NAME=gold _datastore-etcd
+	$(MAKE) NAME=bronze NAMESPACE=etcd-system _datastore-etcd
+	$(MAKE) NAME=silver NAMESPACE=etcd-system _datastore-etcd
+	$(MAKE) NAME=gold NAMESPACE=etcd-system _datastore-etcd
+	$(MAKE) NAME=primary NAMESPACE=kamaji-system EXTRA_ARGS='--set certManager.enabled=true --set certManager.issuerRef.kind=Issuer --set certManager.issuerRef.name=kamaji-selfsigned-issuer --set selfSignedCertificates.enabled=false' _datastore-etcd
+	$(MAKE) NAME=secondary NAMESPACE=kamaji-system EXTRA_ARGS='--set certManager.enabled=true --set certManager.ca.create=false --set certManager.ca.nameOverride=etcd-primary-ca --set certManager.issuerRef.kind=Issuer --set certManager.issuerRef.name=kamaji-selfsigned-issuer --set selfSignedCertificates.enabled=false' _datastore-etcd
 
 datastore-nats: helm
 	$(HELM) repo add nats https://nats-io.github.io/k8s/helm/charts/
@@ -231,6 +242,16 @@ cert-manager:
 	$(HELM) repo add jetstack https://charts.jetstack.io
 	$(HELM) upgrade --install cert-manager jetstack/cert-manager --namespace certmanager-system --create-namespace --set "installCRDs=true"
 
+gateway-api:
+	kubectl apply --server-side -f https://github.com/kubernetes-sigs/gateway-api/releases/download/v1.4.0/standard-install.yaml
+# 	Required for the TLSRoutes. Experimentals.
+	kubectl apply --server-side -f https://github.com/kubernetes-sigs/gateway-api/releases/download/v1.4.0/experimental-install.yaml
+	kubectl wait --for=condition=Established crd/gateways.gateway.networking.k8s.io --timeout=60s
+
+envoy-gateway: gateway-api helm ## Install Envoy Gateway for Gateway API tests.
+	$(HELM) upgrade --install eg oci://docker.io/envoyproxy/gateway-helm --version v1.6.1 -n envoy-gateway-system --create-namespace
+	kubectl wait --timeout=5m -n envoy-gateway-system deployment/envoy-gateway --for=condition=Available
+
 load: kind
 	$(KIND) load docker-image --name kamaji ${CONTAINER_REPOSITORY}:${VERSION}
 
@@ -240,8 +261,12 @@ load: kind
 env: kind
 	$(KIND) create cluster --name kamaji
 
+cleanup: kind
+	$(KIND) delete cluster --name kamaji
+
 .PHONY: e2e
-e2e: env build load helm ginkgo cert-manager ## Create a KinD cluster, install Kamaji on it and run the test suite.
+e2e: env build load helm ginkgo cert-manager gateway-api envoy-gateway ## Create a KinD cluster, install Kamaji on it and run the test suite.
+	$(HELM) upgrade --debug --install kamaji-crds ./charts/kamaji-crds --create-namespace --namespace kamaji-system
 	$(HELM) repo add clastix https://clastix.github.io/charts
 	$(HELM) dependency build ./charts/kamaji
 	$(HELM) upgrade --debug --install kamaji ./charts/kamaji --create-namespace --namespace kamaji-system --set "image.tag=$(VERSION)" --set "image.pullPolicy=Never" --set "telemetry.disabled=true"

NOTICE

@@ -0,0 +1,15 @@
+Kamaji — The Kubernetes Control Plane Manager: copyright 2022 Clastix Labs
+Licensed under the Apache License, Version 2.0: https://kamaji.clastix.io
+
+This product includes software developed by Clastix Labs and the Kamaji open-source community under the Apache License, Version 2.0.
+
+Kamaji powers Kubernetes Control Planes at scale for companies worldwide.
+
+We encourage all commercial products and services using Kamaji to acknowledge this publicly and join our growing ecosystem of adopters.
+
+You can support the Kamaji community by:
+- Listing Kamaji in your product's "Open Source Credits" or similar section
+- Adding your organization to the Adopters list on GitHub: https://github.com/clastix/kamaji/blob/master/ADOPTERS.md
+- Mentioning Kamaji on your company or product website
+
+Public acknowledgement strengthens the open-source ecosystem and helps ensure the sustainability of the project you rely on.

PROJECT

@@ -7,6 +7,15 @@ plugins:
 projectName: operator
 repo: github.com/clastix/kamaji
 resources:
+- api:
+    crdVersion: v1
+    namespaced: false
+  controller: true
+  domain: clastix.io
+  group: kamaji
+  kind: KubeconfigGenerator
+  path: github.com/clastix/kamaji/api/v1alpha1
+  version: v1alpha1
 - api:
     crdVersion: v1
     namespaced: true

README.md

@@ -123,6 +123,8 @@ Since Kamaji is just focusing on the Control Plane a [Kamaji's Cluster API Contr
 - YouTube ▶️ [Rancher & Kamaji: solving multitenancy challenges in the Kubernetes world](https://www.youtube.com/watch?v=VXHNrMmlF8U)
 - YouTube ▶️ [Enabling Self-Service Kubernetes clusters with Kamaji and Paralus](https://www.youtube.com/watch?v=JWA2LwZazM0)
 - YouTube ▶️ [Hosted Control Plane on Kubernetes (HPC) with Kamaji and K0mostron by Hervé Leclerc, ALTER WAY](https://www.youtube.com/watch?v=vmRdE2ngn78)
+- Medium 📖 [Set up Virtual Control Planes with Kamaji on Minikube, by Ben Soer](https://medium.com/@bensoer/set-up-virtual-control-planes-with-kamaji-on-minikube-a540be0275aa)
+- Hands-On tutorial 📖 [How to build your own managed Kubernetes service on Hetzner Cloud, by Hans Jörg Wieland](https://wieland.tech/blog/kamaji-cluster-api-and-etcd)
 
 ### 🏷️ Versioning
 

api/v1alpha1/datastore_types.go

@@ -90,6 +90,9 @@ type SecretReference struct {
 
 // DataStoreStatus defines the observed state of DataStore.
 type DataStoreStatus struct {
+	// ObservedGeneration represents the .metadata.generation that was last reconciled.
+	// +optional
+	ObservedGeneration int64 `json:"observedGeneration,omitempty"`
 	// List of the Tenant Control Planes, namespaced named, using this data store.
 	UsedBy []string `json:"usedBy,omitempty"`
 }

api/v1alpha1/groupversion_info.go

@@ -4,7 +4,6 @@
 // Package v1alpha1 contains API Schema definitions for the kamaji v1alpha1 API group
 // +kubebuilder:object:generate=true
 // +groupName=kamaji.clastix.io
-//nolint
 package v1alpha1
 
 import (

api/v1alpha1/indexer_gateway_listener.go

@@ -0,0 +1,47 @@
+// Copyright 2022 Clastix Labs
+// SPDX-License-Identifier: Apache-2.0
+
+package v1alpha1
+
+import (
+	"context"
+	"fmt"
+
+	controllerruntime "sigs.k8s.io/controller-runtime"
+	"sigs.k8s.io/controller-runtime/pkg/client"
+	gatewayv1 "sigs.k8s.io/gateway-api/apis/v1"
+)
+
+const (
+	GatewayListenerNameKey = "spec.listeners.name"
+)
+
+type GatewayListener struct{}
+
+func (g *GatewayListener) Object() client.Object {
+	return &gatewayv1.Gateway{}
+}
+
+func (g *GatewayListener) Field() string {
+	return GatewayListenerNameKey
+}
+
+func (g *GatewayListener) ExtractValue() client.IndexerFunc {
+	return func(object client.Object) []string {
+		gateway := object.(*gatewayv1.Gateway) //nolint:forcetypeassert
+
+		listenerNames := make([]string, 0, len(gateway.Spec.Listeners))
+		for _, listener := range gateway.Spec.Listeners {
+			// Create a composite key: namespace/gatewayName/listenerName
+			// This allows us to look up gateways by listener name while ensuring uniqueness
+			key := fmt.Sprintf("%s/%s/%s", gateway.Namespace, gateway.Name, listener.Name)
+			listenerNames = append(listenerNames, key)
+		}
+
+		return listenerNames
+	}
+}
+
+func (g *GatewayListener) SetupWithManager(ctx context.Context, mgr controllerruntime.Manager) error {
+	return mgr.GetFieldIndexer().IndexField(ctx, g.Object(), g.Field(), g.ExtractValue())
+}

api/v1alpha1/kubeconfiggenerator_types.go

@@ -0,0 +1,94 @@
+// Copyright 2022 Clastix Labs
+// SPDX-License-Identifier: Apache-2.0
+
+package v1alpha1
+
+import (
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+)
+
+var (
+	ManagedByLabel  = "kamaji.clastix.io/managed-by"
+	ManagedForLabel = "kamaji.clastix.io/managed-for"
+)
+
+//+kubebuilder:object:root=true
+//+kubebuilder:subresource:status
+//+kubebuilder:printcolumn:name="Age",type="date",JSONPath=".metadata.creationTimestamp",description="Age"
+//+kubebuilder:metadata:annotations={"cert-manager.io/inject-ca-from=kamaji-system/kamaji-serving-cert"}
+//+kubebuilder:resource:scope=Cluster,shortName=kc,categories=kamaji
+
+// KubeconfigGenerator is the Schema for the kubeconfiggenerators API.
+type KubeconfigGenerator struct {
+	metav1.TypeMeta   `json:",inline"`
+	metav1.ObjectMeta `json:"metadata,omitempty"`
+
+	Spec   KubeconfigGeneratorSpec   `json:"spec,omitempty"`
+	Status KubeconfigGeneratorStatus `json:"status,omitempty"`
+}
+
+// CompoundValue allows defining a static, or a dynamic value.
+// Options are mutually exclusive, just one should be picked up.
+// +kubebuilder:validation:XValidation:rule="(has(self.stringValue) || has(self.fromDefinition)) && !(has(self.stringValue) && has(self.fromDefinition))",message="Either stringValue or fromDefinition must be set, but not both."
+type CompoundValue struct {
+	// StringValue is a static string value.
+	StringValue string `json:"stringValue,omitempty"`
+	// FromDefinition is used to generate a dynamic value,
+	// it uses the dot notation to access fields from the referenced TenantControlPlane object:
+	// e.g.: metadata.name
+	FromDefinition string `json:"fromDefinition,omitempty"`
+}
+
+type KubeconfigGeneratorSpec struct {
+	// NamespaceSelector is used to filter Namespaces from which the generator should extract TenantControlPlane objects.
+	NamespaceSelector metav1.LabelSelector `json:"namespaceSelector,omitempty"`
+	// TenantControlPlaneSelector is used to filter the TenantControlPlane objects that should be address by the generator.
+	TenantControlPlaneSelector metav1.LabelSelector `json:"tenantControlPlaneSelector,omitempty"`
+	// Groups is resolved a set of strings used to assign the x509 organisations field.
+	// It will be recognised by Kubernetes as user groups.
+	Groups []CompoundValue `json:"groups,omitempty"`
+	// User resolves to a string to identify the client, assigned to the x509 Common Name field.
+	User CompoundValue `json:"user"`
+	// ControlPlaneEndpointFrom is the key used to extract the Tenant Control Plane endpoint that must be used by the generator.
+	// The targeted Secret is the `${TCP}-admin-kubeconfig` one, default to `admin.svc`.
+	//+kubebuilder:default="admin.svc"
+	ControlPlaneEndpointFrom string `json:"controlPlaneEndpointFrom,omitempty"`
+}
+
+type KubeconfigGeneratorStatusError struct {
+	// Resource is the Namespaced name of the errored resource.
+	//+kubebuilder:validation:Required
+	Resource string `json:"resource"`
+	// Message is the error message recorded upon the last generator run.
+	//+kubebuilder:validation:Required
+	Message string `json:"message"`
+}
+
+// KubeconfigGeneratorStatus defines the observed state of KubeconfigGenerator.
+type KubeconfigGeneratorStatus struct {
+	// ObservedGeneration represents the .metadata.generation that was last reconciled.
+	// +optional
+	ObservedGeneration int64 `json:"observedGeneration,omitempty"`
+	// Resources is the sum of targeted TenantControlPlane objects.
+	//+kubebuilder:default=0
+	Resources int `json:"resources"`
+	// AvailableResources is the sum of successfully generated resources.
+	// In case of a different value compared to Resources, check the field errors.
+	//+kubebuilder:default=0
+	AvailableResources int `json:"availableResources"`
+	// Errors is the list of failed kubeconfig generations.
+	Errors []KubeconfigGeneratorStatusError `json:"errors,omitempty"`
+}
+
+//+kubebuilder:object:root=true
+
+// KubeconfigGeneratorList contains a list of TenantControlPlane.
+type KubeconfigGeneratorList struct {
+	metav1.TypeMeta `json:",inline"`
+	metav1.ListMeta `json:"metadata,omitempty"`
+	Items           []KubeconfigGenerator `json:"items"`
+}
+
+func init() {
+	SchemeBuilder.Register(&KubeconfigGenerator{}, &KubeconfigGeneratorList{})
+}

api/v1alpha1/tenantcontrolplane_funcs.go

@@ -8,8 +8,8 @@ import (
 	"fmt"
 	"net"
 	"strconv"
+	"strings"
 
-	"github.com/pkg/errors"
 	corev1 "k8s.io/api/core/v1"
 	"k8s.io/apimachinery/pkg/types"
 	"sigs.k8s.io/controller-runtime/pkg/client"
@@ -26,12 +26,12 @@ func (in *TenantControlPlane) AssignedControlPlaneAddress() (string, int32, erro
 
 	address, portString, err := net.SplitHostPort(in.Status.ControlPlaneEndpoint)
 	if err != nil {
-		return "", 0, errors.Wrap(err, "cannot split host port from Tenant Control Plane endpoint")
+		return "", 0, fmt.Errorf("cannot split host port from Tenant Control Plane endpoint: %w", err)
 	}
 
 	port, err := strconv.Atoi(portString)
 	if err != nil {
-		return "", 0, errors.Wrap(err, "cannot convert Tenant Control Plane port from endpoint")
+		return "", 0, fmt.Errorf("cannot convert Tenant Control Plane port from endpoint: %w", err)
 	}
 
 	return address, int32(port), nil
@@ -46,7 +46,7 @@ func (in *TenantControlPlane) DeclaredControlPlaneAddress(ctx context.Context, c
 	svc := &corev1.Service{}
 	err := client.Get(ctx, types.NamespacedName{Namespace: in.GetNamespace(), Name: in.GetName()}, svc)
 	if err != nil {
-		return "", errors.Wrap(err, "cannot retrieve Service for the TenantControlPlane")
+		return "", fmt.Errorf("cannot retrieve Service for the TenantControlPlane: %w", err)
 	}
 
 	switch {
@@ -95,3 +95,17 @@ func getLoadBalancerAddress(ingress []corev1.LoadBalancerIngress) (string, error
 
 	return "", kamajierrors.MissingValidIPError{}
 }
+
+func (in *TenantControlPlane) normalizeNamespaceName() string {
+	// The dash character (-) must be replaced with an underscore, PostgreSQL is complaining about it:
+	// https://github.com/clastix/kamaji/issues/328
+	return strings.ReplaceAll(fmt.Sprintf("%s_%s", in.GetNamespace(), in.GetName()), "-", "_")
+}
+
+func (in *TenantControlPlane) GetDefaultDatastoreUsername() string {
+	return in.normalizeNamespaceName()
+}
+
+func (in *TenantControlPlane) GetDefaultDatastoreSchema() string {
+	return in.normalizeNamespaceName()
+}

api/v1alpha1/tenantcontrolplane_jsonpatch.go

@@ -0,0 +1,83 @@
+// Copyright 2022 Clastix Labs
+// SPDX-License-Identifier: Apache-2.0
+
+package v1alpha1
+
+import (
+	apiextensionsv1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1"
+)
+
+type JSONPatches []JSONPatch
+
+type JSONPatch struct {
+	// Op is the RFC 6902 JSON Patch operation.
+	//+kubebuilder:validation:Enum=add;remove;replace;move;copy;test
+	Op string `json:"op"`
+	// Path specifies the target location in the JSON document. Use "/" to separate keys; "-" for appending to arrays.
+	Path string `json:"path"`
+	// From specifies the source location for move or copy operations.
+	From string `json:"from,omitempty"`
+	// Value is the operation value to be used when Op is add, replace, test.
+	Value *apiextensionsv1.JSON `json:"value,omitempty"`
+}
+
+func (p JSONPatches) ToJSON() ([]byte, error) {
+	if len(p) == 0 {
+		return []byte("[]"), nil
+	}
+
+	buf := make([]byte, 0, 256)
+	buf = append(buf, '[')
+
+	for i, patch := range p {
+		if i > 0 {
+			buf = append(buf, ',')
+		}
+
+		buf = append(buf, '{')
+
+		buf = append(buf, `"op":"`...)
+		buf = appendEscapedString(buf, patch.Op)
+		buf = append(buf, '"')
+
+		buf = append(buf, `,"path":"`...)
+		buf = appendEscapedString(buf, patch.Path)
+		buf = append(buf, '"')
+
+		if patch.From != "" {
+			buf = append(buf, `,"from":"`...)
+			buf = appendEscapedString(buf, patch.From)
+			buf = append(buf, '"')
+		}
+
+		if patch.Value != nil {
+			buf = append(buf, `,"value":`...)
+			buf = append(buf, patch.Value.Raw...)
+		}
+
+		buf = append(buf, '}')
+	}
+
+	buf = append(buf, ']')
+
+	return buf, nil
+}
+
+func appendEscapedString(dst []byte, s string) []byte {
+	for i := range s {
+		switch s[i] {
+		case '\\', '"':
+			dst = append(dst, '\\', s[i])
+		case '\n':
+			dst = append(dst, '\\', 'n')
+		case '\r':
+			dst = append(dst, '\\', 'r')
+		case '\t':
+			dst = append(dst, '\\', 't')
+		default:
+			dst = append(dst, s[i])
+		}
+	}
+
+	return dst
+}

api/v1alpha1/tenantcontrolplane_status.go

@@ -8,6 +8,7 @@ import (
 	corev1 "k8s.io/api/core/v1"
 	networkingv1 "k8s.io/api/networking/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	gatewayv1 "sigs.k8s.io/gateway-api/apis/v1"
 )
 
 // APIServerCertificatesStatus defines the observed state of ETCD Certificate for API server.
@@ -138,6 +139,7 @@ type KonnectivityStatus struct {
 	ClusterRoleBinding ExternalKubernetesObjectStatus  `json:"clusterrolebinding,omitempty"`
 	Agent              KonnectivityAgentStatus         `json:"agent,omitempty"`
 	Service            KubernetesServiceStatus         `json:"service,omitempty"`
+	Gateway            *KubernetesGatewayStatus        `json:"gateway,omitempty"`
 }
 
 type KonnectivityConfigMap struct {
@@ -160,6 +162,9 @@ type AddonsStatus struct {
 
 // TenantControlPlaneStatus defines the observed state of TenantControlPlane.
 type TenantControlPlaneStatus struct {
+	// ObservedGeneration represents the .metadata.generation that was last reconciled.
+	// +optional
+	ObservedGeneration int64 `json:"observedGeneration,omitempty"`
 	// Storage Status contains information about Kubernetes storage system
 	Storage StorageStatus `json:"storage,omitempty"`
 	// Certificates contains information about the different certificates
@@ -187,14 +192,17 @@ type KubernetesStatus struct {
 	Deployment KubernetesDeploymentStatus `json:"deployment,omitempty"`
 	Service    KubernetesServiceStatus    `json:"service,omitempty"`
 	Ingress    *KubernetesIngressStatus   `json:"ingress,omitempty"`
+	Gateway    *KubernetesGatewayStatus   `json:"gateway,omitempty"`
 }
 
-// +kubebuilder:validation:Enum=Provisioning;CertificateAuthorityRotating;Upgrading;Migrating;Ready;NotReady;Sleeping
+// +kubebuilder:validation:Enum=Unknown;Provisioning;CertificateAuthorityRotating;Upgrading;Migrating;Ready;NotReady;Sleeping;WriteLimited
 type KubernetesVersionStatus string
 
 var (
+	VersionUnknown      KubernetesVersionStatus = "Unknown"
 	VersionProvisioning KubernetesVersionStatus = "Provisioning"
 	VersionSleeping     KubernetesVersionStatus = "Sleeping"
+	VersionWriteLimited KubernetesVersionStatus = "WriteLimited"
 	VersionCARotating   KubernetesVersionStatus = "CertificateAuthorityRotating"
 	VersionUpgrading    KubernetesVersionStatus = "Upgrading"
 	VersionMigrating    KubernetesVersionStatus = "Migrating"
@@ -242,3 +250,25 @@ type KubernetesIngressStatus struct {
 	// The namespace which the Ingress for the given cluster is deployed.
 	Namespace string `json:"namespace"`
 }
+
+type GatewayAccessPoint struct {
+	Type  *gatewayv1.AddressType `json:"type"`
+	Value string                 `json:"value"`
+	Port  int32                  `json:"port"`
+	URLs  []string               `json:"urls,omitempty"`
+}
+
+// +k8s:deepcopy-gen=false
+type RouteStatus = gatewayv1.RouteStatus
+
+// KubernetesGatewayStatus defines the status for the Tenant Control Plane Gateway in the management cluster.
+type KubernetesGatewayStatus struct {
+	// The TLSRoute status as resported by the gateway controllers.
+	RouteStatus `json:",inline"`
+
+	// Reference to the route created for this tenant.
+	RouteRef corev1.LocalObjectReference `json:"routeRef,omitempty"`
+
+	// A list of valid access points that the route exposes.
+	AccessPoints []GatewayAccessPoint `json:"accessPoints,omitempty"`
+}

api/v1alpha1/tenantcontrolplane_types.go

@@ -7,6 +7,8 @@ import (
 	appsv1 "k8s.io/api/apps/v1"
 	corev1 "k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/util/intstr"
+	gatewayv1 "sigs.k8s.io/gateway-api/apis/v1"
 )
 
 // NetworkProfileSpec defines the desired state of NetworkProfile.
@@ -66,6 +68,12 @@ const (
 )
 
 type KubeletSpec struct {
+	// ConfigurationJSONPatches contains the RFC 6902 JSON patches to customise the kubeadm generate configuration,
+	// useful to customise and mangling the configuration according to your needs;
+	// e.g.: configuring the cgroup driver used by Kubelet is possible via the following patch:
+	//
+	// [{"op": "replace", "path": "/cgroupDriver", "value": "systemd"}]
+	ConfigurationJSONPatches JSONPatches `json:"configurationJSONPatches,omitempty"`
 	// Ordered list of the preferred NodeAddressTypes to use for kubelet connections.
 	// Default to InternalIP, ExternalIP, Hostname.
 	//+kubebuilder:default={"InternalIP","ExternalIP","Hostname"}
@@ -74,6 +82,8 @@ type KubeletSpec struct {
 	PreferredAddressTypes []KubeletPreferredAddressType `json:"preferredAddressTypes,omitempty"`
 	// CGroupFS defines the cgroup driver for Kubelet
 	// https://kubernetes.io/docs/tasks/administer-cluster/kubeadm/configure-cgroup-driver/
+	//
+	// Deprecated: use ConfigurationJSONPatches.
 	CGroupFS CGroupDriver `json:"cgroupfs,omitempty"`
 }
 
@@ -89,6 +99,32 @@ type KubernetesSpec struct {
 	AdmissionControllers AdmissionControllers `json:"admissionControllers,omitempty"`
 }
 
+type AdditionalPort struct {
+	// The name of this port within the Service created by Kamaji.
+	// This must be a DNS_LABEL, must have unique names, and cannot be `kube-apiserver`, or `konnectivity-server`.
+	Name string `json:"name"`
+	// The IP protocol for this port. Supports "TCP", "UDP", and "SCTP".
+	//+kubebuilder:validation:Enum=TCP;UDP;SCTP
+	//+kubebuilder:default=TCP
+	Protocol corev1.Protocol `json:"protocol,omitempty"`
+	// The application protocol for this port.
+	// This is used as a hint for implementations to offer richer behavior for protocols that they understand.
+	// This field follows standard Kubernetes label syntax.
+	// Valid values are either:
+	//
+	// * Un-prefixed protocol names - reserved for IANA standard service names (as per
+	// RFC-6335 and https://www.iana.org/assignments/service-names).
+	AppProtocol *string `json:"appProtocol,omitempty"`
+	// The port that will be exposed by this service.
+	Port int32 `json:"port"`
+	// Number or name of the port to access on the pods of the Tenant Control Plane.
+	// Number must be in the range 1 to 65535. Name must be an IANA_SVC_NAME.
+	// If this is a string, it will be looked up as a named port in the
+	// target Pod's container ports. If this is not specified, the value
+	// of the 'port' field is used (an identity map).
+	TargetPort intstr.IntOrString `json:"targetPort"`
+}
+
 // AdditionalMetadata defines which additional metadata, such as labels and annotations, must be attached to the created resource.
 type AdditionalMetadata struct {
 	Labels      map[string]string `json:"labels,omitempty"`
@@ -97,6 +133,7 @@ type AdditionalMetadata struct {
 
 // ControlPlane defines how the Tenant Control Plane Kubernetes resources must be created in the Admin Cluster,
 // such as the number of Pod replicas, the Service resource, or the Ingress.
+// +kubebuilder:validation:XValidation:rule="!(has(self.ingress) && has(self.gateway))",message="using both ingress and gateway is not supported"
 type ControlPlane struct {
 	// Defining the options for the deployed Tenant Control Plane as Deployment resource.
 	Deployment DeploymentSpec `json:"deployment,omitempty"`
@@ -104,6 +141,8 @@ type ControlPlane struct {
 	Service ServiceSpec `json:"service"`
 	// Defining the options for an Optional Ingress which will expose API Server of the Tenant Control Plane
 	Ingress *IngressSpec `json:"ingress,omitempty"`
+	// Defining the options for an Optional Gateway which will expose API Server of the Tenant Control Plane
+	Gateway *GatewaySpec `json:"gateway,omitempty"`
 }
 
 // IngressSpec defines the options for the ingress which will expose API Server of the Tenant Control Plane.
@@ -115,6 +154,17 @@ type IngressSpec struct {
 	Hostname string `json:"hostname,omitempty"`
 }
 
+// GatewaySpec defines the options for the Gateway which will expose API Server of the Tenant Control Plane.
+// +kubebuilder:validation:XValidation:rule="!has(self.parentRefs) || size(self.parentRefs) == 0 || self.parentRefs.all(ref, !has(ref.port) && !has(ref.sectionName))",message="parentRefs must not specify port or sectionName, these are set automatically by Kamaji"
+type GatewaySpec struct {
+	// AdditionalMetadata to add Labels and Annotations support.
+	AdditionalMetadata AdditionalMetadata `json:"additionalMetadata,omitempty"`
+	// GatewayParentRefs is the class of the Gateway resource to use.
+	GatewayParentRefs []gatewayv1.ParentReference `json:"parentRefs,omitempty"`
+	// Hostname is an optional field which will be used as a route hostname.
+	Hostname gatewayv1.Hostname `json:"hostname,omitempty"`
+}
+
 type ControlPlaneComponentsResources struct {
 	APIServer         *corev1.ResourceRequirements `json:"apiServer,omitempty"`
 	ControllerManager *corev1.ResourceRequirements `json:"controllerManager,omitempty"`
@@ -198,6 +248,9 @@ type ControlPlaneExtraArgs struct {
 
 type ServiceSpec struct {
 	AdditionalMetadata AdditionalMetadata `json:"additionalMetadata,omitempty"`
+	// AdditionalPorts allows adding additional ports to the Service generated Kamaji
+	// which targets the Tenant Control Plane pods.
+	AdditionalPorts []AdditionalPort `json:"additionalPorts,omitempty"`
 	// ServiceType allows specifying how to expose the Tenant Control Plane.
 	ServiceType ServiceType `json:"serviceType"`
 }
@@ -226,7 +279,9 @@ type KonnectivityServerSpec struct {
 	// The port which Konnectivity server is listening to.
 	Port int32 `json:"port"`
 	// Container image version of the Konnectivity server.
-	//+kubebuilder:default=v0.28.6
+	// If left empty, Kamaji will automatically inflect the version from the deployed Tenant Control Plane.
+	//
+	// WARNING: for last cut-off releases, the container image could be not available.
 	Version string `json:"version,omitempty"`
 	// Container image used by the Konnectivity server.
 	//+kubebuilder:default=registry.k8s.io/kas-network-proxy/proxy-server
@@ -243,20 +298,28 @@ var (
 	KonnectivityAgentModeDeployment KonnectivityAgentMode = "Deployment"
 )
 
-//+kubebuilder:validation:XValidation:rule="!(self.mode == 'DaemonSet' && has(self.replicas) && self.replicas != 0) && !(self.mode == 'Deployment' && self.replicas == 0)",message="replicas must be 0 when mode is DaemonSet, and greater than 0 when mode is Deployment"
+//+kubebuilder:validation:XValidation:rule="!(self.mode == 'DaemonSet' && has(self.replicas) && self.replicas != 0) && !(self.mode == 'Deployment' && has(self.replicas) && self.replicas == 0)",message="replicas must be 0 (or unset) when mode is DaemonSet, and greater than 0 (or unset) when mode is Deployment"
 
 type KonnectivityAgentSpec struct {
 	// AgentImage defines the container image for Konnectivity's agent.
 	//+kubebuilder:default=registry.k8s.io/kas-network-proxy/proxy-agent
 	Image string `json:"image,omitempty"`
 	// Version for Konnectivity agent.
-	//+kubebuilder:default=v0.28.6
+	// If left empty, Kamaji will automatically inflect the version from the deployed Tenant Control Plane.
+	//
+	// WARNING: for last cut-off releases, the container image could be not available.
 	Version string `json:"version,omitempty"`
 	// Tolerations for the deployed agent.
 	// Can be customized to start the konnectivity-agent even if the nodes are not ready or tainted.
 	//+kubebuilder:default={{key: "CriticalAddonsOnly", operator: "Exists"}}
 	Tolerations []corev1.Toleration `json:"tolerations,omitempty"`
 	ExtraArgs   ExtraArgs           `json:"extraArgs,omitempty"`
+	// HostNetwork enables the konnectivity agent to use the Host network namespace.
+	// By enabling this mode, the Agent doesn't need to wait for the CNI initialisation,
+	// enabling a sort of out-of-band access to nodes for troubleshooting scenarios,
+	// or when the agent needs direct access to the host network.
+	//+kubebuilder:default=false
+	HostNetwork bool `json:"hostNetwork,omitempty"`
 	// Mode allows specifying the Agent deployment mode: Deployment, or DaemonSet (default).
 	//+kubebuilder:default="DaemonSet"
 	//+kubebuilder:validation:Enum=DaemonSet;Deployment
@@ -264,14 +327,14 @@ type KonnectivityAgentSpec struct {
 	// Replicas defines the number of replicas when Mode is Deployment.
 	// Must be 0 if Mode is DaemonSet.
 	//+kubebuilder:validation:Optional
-	Replicas int32 `json:"replicas,omitempty"`
+	Replicas *int32 `json:"replicas,omitempty"`
 }
 
 // KonnectivitySpec defines the spec for Konnectivity.
 type KonnectivitySpec struct {
-	//+kubebuilder:default={version:"v0.28.6",image:"registry.k8s.io/kas-network-proxy/proxy-server",port:8132}
+	//+kubebuilder:default={image:"registry.k8s.io/kas-network-proxy/proxy-server",port:8132}
 	KonnectivityServerSpec KonnectivityServerSpec `json:"server,omitempty"`
-	//+kubebuilder:default={version:"v0.28.6",image:"registry.k8s.io/kas-network-proxy/proxy-agent",mode:"DaemonSet"}
+	//+kubebuilder:default={image:"registry.k8s.io/kas-network-proxy/proxy-agent",mode:"DaemonSet"}
 	KonnectivityAgentSpec KonnectivityAgentSpec `json:"agent,omitempty"`
 }
 
@@ -287,14 +350,44 @@ type AddonsSpec struct {
 	KubeProxy *AddonSpec `json:"kubeProxy,omitempty"`
 }
 
+type Permissions struct {
+	BlockCreate bool `json:"blockCreation,omitempty"`
+	BlockUpdate bool `json:"blockUpdate,omitempty"`
+	BlockDelete bool `json:"blockDeletion,omitempty"`
+}
+
+func (p *Permissions) HasAnyLimitation() bool {
+	if p.BlockCreate || p.BlockUpdate || p.BlockDelete {
+		return true
+	}
+
+	return false
+}
+
+// DataStoreOverride defines which kubernetes resource will be stored in a dedicated datastore.
+type DataStoreOverride struct {
+	// Resource specifies which kubernetes resource to target.
+	Resource string `json:"resource,omitempty"`
+	// DataStore specifies the DataStore that should be used to store the Kubernetes data for the given Resource.
+	DataStore string `json:"dataStore,omitempty"`
+}
+
 // TenantControlPlaneSpec defines the desired state of TenantControlPlane.
 // +kubebuilder:validation:XValidation:rule="!has(oldSelf.dataStore) || has(self.dataStore)", message="unsetting the dataStore is not supported"
 // +kubebuilder:validation:XValidation:rule="!has(oldSelf.dataStoreSchema) || has(self.dataStoreSchema)", message="unsetting the dataStoreSchema is not supported"
+// +kubebuilder:validation:XValidation:rule="!has(oldSelf.dataStoreUsername) || has(self.dataStoreUsername)", message="unsetting the dataStoreUsername is not supported"
 // +kubebuilder:validation:XValidation:rule="!has(self.networkProfile.loadBalancerSourceRanges) || (size(self.networkProfile.loadBalancerSourceRanges) == 0 || self.controlPlane.service.serviceType == 'LoadBalancer')", message="LoadBalancer source ranges are supported only with LoadBalancer service type"
 // +kubebuilder:validation:XValidation:rule="!has(self.networkProfile.loadBalancerClass) || self.controlPlane.service.serviceType == 'LoadBalancer'", message="LoadBalancerClass is supported only with LoadBalancer service type"
 // +kubebuilder:validation:XValidation:rule="self.controlPlane.service.serviceType != 'LoadBalancer' || (oldSelf.controlPlane.service.serviceType != 'LoadBalancer' && self.controlPlane.service.serviceType == 'LoadBalancer') || has(self.networkProfile.loadBalancerClass) == has(oldSelf.networkProfile.loadBalancerClass)",message="LoadBalancerClass cannot be set or unset at runtime"
 
 type TenantControlPlaneSpec struct {
+	// WritePermissions allows to select which operations (create, delete, update) must be blocked:
+	// by default, all actions are allowed, and API Server can write to its Datastore.
+	//
+	// By blocking all actions, the Tenant Control Plane can enter in a Read Only mode:
+	// this phase can be used to prevent Datastore quota exhaustion or for your own business logic
+	// (e.g.: blocking creation and update, but allowing deletion to "clean up" space).
+	WritePermissions Permissions `json:"writePermissions,omitempty"`
 	// DataStore specifies the DataStore that should be used to store the Kubernetes data for the given Tenant Control Plane.
 	// When Kamaji runs with the default DataStore flag, all empty values will inherit the default value.
 	// By leaving it empty and running Kamaji with no default DataStore flag, it is possible to achieve automatic assignment to a specific DataStore object.
@@ -307,8 +400,16 @@ type TenantControlPlaneSpec struct {
 	// to the user to avoid clashes between different TenantControlPlanes. If not set upon creation, Kamaji will default the
 	// DataStoreSchema by concatenating the namespace and name of the TenantControlPlane.
 	// +kubebuilder:validation:XValidation:rule="self == oldSelf",message="changing the dataStoreSchema is not supported"
-	DataStoreSchema string       `json:"dataStoreSchema,omitempty"`
-	ControlPlane    ControlPlane `json:"controlPlane"`
+	DataStoreSchema string `json:"dataStoreSchema,omitempty"`
+	// DataStoreUsername allows to specify the username of the database (for relational DataStores). This
+	// value is optional and immutable. Note that Kamaji currently doesn't ensure that DataStoreUsername values are unique. It's up
+	// to the user to avoid clashes between different TenantControlPlanes. If not set upon creation, Kamaji will default the
+	// DataStoreUsername by concatenating the namespace and name of the TenantControlPlane.
+	// +kubebuilder:validation:XValidation:rule="self == oldSelf",message="changing the dataStoreUsername is not supported"
+	DataStoreUsername string `json:"dataStoreUsername,omitempty"`
+	// DataStoreOverride defines which kubernetes resources will be stored in dedicated datastores.
+	DataStoreOverrides []DataStoreOverride `json:"dataStoreOverrides,omitempty"`
+	ControlPlane       ControlPlane        `json:"controlPlane"`
 	// Kubernetes specification for tenant control plane
 	Kubernetes KubernetesSpec `json:"kubernetes"`
 	// NetworkProfile specifies how the network is

api/v1alpha1/zz_generated.deepcopy.go

@@ -8,8 +8,10 @@
 package v1alpha1
 
 import (
-	"k8s.io/api/core/v1"
+	corev1 "k8s.io/api/core/v1"
+	"k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1"
 	runtime "k8s.io/apimachinery/pkg/runtime"
+	apisv1 "sigs.k8s.io/gateway-api/apis/v1"
 )
 
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
@@ -57,26 +59,47 @@ func (in *AdditionalMetadata) DeepCopy() *AdditionalMetadata {
 	return out
 }
 
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *AdditionalPort) DeepCopyInto(out *AdditionalPort) {
+	*out = *in
+	if in.AppProtocol != nil {
+		in, out := &in.AppProtocol, &out.AppProtocol
+		*out = new(string)
+		**out = **in
+	}
+	out.TargetPort = in.TargetPort
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new AdditionalPort.
+func (in *AdditionalPort) DeepCopy() *AdditionalPort {
+	if in == nil {
+		return nil
+	}
+	out := new(AdditionalPort)
+	in.DeepCopyInto(out)
+	return out
+}
+
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *AdditionalVolumeMounts) DeepCopyInto(out *AdditionalVolumeMounts) {
 	*out = *in
 	if in.APIServer != nil {
 		in, out := &in.APIServer, &out.APIServer
-		*out = make([]v1.VolumeMount, len(*in))
+		*out = make([]corev1.VolumeMount, len(*in))
 		for i := range *in {
 			(*in)[i].DeepCopyInto(&(*out)[i])
 		}
 	}
 	if in.ControllerManager != nil {
 		in, out := &in.ControllerManager, &out.ControllerManager
-		*out = make([]v1.VolumeMount, len(*in))
+		*out = make([]corev1.VolumeMount, len(*in))
 		for i := range *in {
 			(*in)[i].DeepCopyInto(&(*out)[i])
 		}
 	}
 	if in.Scheduler != nil {
 		in, out := &in.Scheduler, &out.Scheduler
-		*out = make([]v1.VolumeMount, len(*in))
+		*out = make([]corev1.VolumeMount, len(*in))
 		for i := range *in {
 			(*in)[i].DeepCopyInto(&(*out)[i])
 		}
@@ -289,6 +312,21 @@ func (in *ClientCertificate) DeepCopy() *ClientCertificate {
 	return out
 }
 
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *CompoundValue) DeepCopyInto(out *CompoundValue) {
+	*out = *in
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new CompoundValue.
+func (in *CompoundValue) DeepCopy() *CompoundValue {
+	if in == nil {
+		return nil
+	}
+	out := new(CompoundValue)
+	in.DeepCopyInto(out)
+	return out
+}
+
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *ContentRef) DeepCopyInto(out *ContentRef) {
 	*out = *in
@@ -324,6 +362,11 @@ func (in *ControlPlane) DeepCopyInto(out *ControlPlane) {
 		*out = new(IngressSpec)
 		(*in).DeepCopyInto(*out)
 	}
+	if in.Gateway != nil {
+		in, out := &in.Gateway, &out.Gateway
+		*out = new(GatewaySpec)
+		(*in).DeepCopyInto(*out)
+	}
 }
 
 // DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new ControlPlane.
@@ -341,22 +384,22 @@ func (in *ControlPlaneComponentsResources) DeepCopyInto(out *ControlPlaneCompone
 	*out = *in
 	if in.APIServer != nil {
 		in, out := &in.APIServer, &out.APIServer
-		*out = new(v1.ResourceRequirements)
+		*out = new(corev1.ResourceRequirements)
 		(*in).DeepCopyInto(*out)
 	}
 	if in.ControllerManager != nil {
 		in, out := &in.ControllerManager, &out.ControllerManager
-		*out = new(v1.ResourceRequirements)
+		*out = new(corev1.ResourceRequirements)
 		(*in).DeepCopyInto(*out)
 	}
 	if in.Scheduler != nil {
 		in, out := &in.Scheduler, &out.Scheduler
-		*out = new(v1.ResourceRequirements)
+		*out = new(corev1.ResourceRequirements)
 		(*in).DeepCopyInto(*out)
 	}
 	if in.Kine != nil {
 		in, out := &in.Kine, &out.Kine
-		*out = new(v1.ResourceRequirements)
+		*out = new(corev1.ResourceRequirements)
 		(*in).DeepCopyInto(*out)
 	}
 }
@@ -496,6 +539,21 @@ func (in *DataStoreList) DeepCopyObject() runtime.Object {
 	return nil
 }
 
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *DataStoreOverride) DeepCopyInto(out *DataStoreOverride) {
+	*out = *in
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new DataStoreOverride.
+func (in *DataStoreOverride) DeepCopy() *DataStoreOverride {
+	if in == nil {
+		return nil
+	}
+	out := new(DataStoreOverride)
+	in.DeepCopyInto(out)
+	return out
+}
+
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *DataStoreSetupStatus) DeepCopyInto(out *DataStoreSetupStatus) {
 	*out = *in
@@ -596,19 +654,19 @@ func (in *DeploymentSpec) DeepCopyInto(out *DeploymentSpec) {
 	in.Strategy.DeepCopyInto(&out.Strategy)
 	if in.Tolerations != nil {
 		in, out := &in.Tolerations, &out.Tolerations
-		*out = make([]v1.Toleration, len(*in))
+		*out = make([]corev1.Toleration, len(*in))
 		for i := range *in {
 			(*in)[i].DeepCopyInto(&(*out)[i])
 		}
 	}
 	if in.Affinity != nil {
 		in, out := &in.Affinity, &out.Affinity
-		*out = new(v1.Affinity)
+		*out = new(corev1.Affinity)
 		(*in).DeepCopyInto(*out)
 	}
 	if in.TopologySpreadConstraints != nil {
 		in, out := &in.TopologySpreadConstraints, &out.TopologySpreadConstraints
-		*out = make([]v1.TopologySpreadConstraint, len(*in))
+		*out = make([]corev1.TopologySpreadConstraint, len(*in))
 		for i := range *in {
 			(*in)[i].DeepCopyInto(&(*out)[i])
 		}
@@ -627,21 +685,21 @@ func (in *DeploymentSpec) DeepCopyInto(out *DeploymentSpec) {
 	in.PodAdditionalMetadata.DeepCopyInto(&out.PodAdditionalMetadata)
 	if in.AdditionalInitContainers != nil {
 		in, out := &in.AdditionalInitContainers, &out.AdditionalInitContainers
-		*out = make([]v1.Container, len(*in))
+		*out = make([]corev1.Container, len(*in))
 		for i := range *in {
 			(*in)[i].DeepCopyInto(&(*out)[i])
 		}
 	}
 	if in.AdditionalContainers != nil {
 		in, out := &in.AdditionalContainers, &out.AdditionalContainers
-		*out = make([]v1.Container, len(*in))
+		*out = make([]corev1.Container, len(*in))
 		for i := range *in {
 			(*in)[i].DeepCopyInto(&(*out)[i])
 		}
 	}
 	if in.AdditionalVolumes != nil {
 		in, out := &in.AdditionalVolumes, &out.AdditionalVolumes
-		*out = make([]v1.Volume, len(*in))
+		*out = make([]corev1.Volume, len(*in))
 		for i := range *in {
 			(*in)[i].DeepCopyInto(&(*out)[i])
 		}
@@ -750,6 +808,69 @@ func (in ExtraArgs) DeepCopy() ExtraArgs {
 	return *out
 }
 
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *GatewayAccessPoint) DeepCopyInto(out *GatewayAccessPoint) {
+	*out = *in
+	if in.Type != nil {
+		in, out := &in.Type, &out.Type
+		*out = new(apisv1.AddressType)
+		**out = **in
+	}
+	if in.URLs != nil {
+		in, out := &in.URLs, &out.URLs
+		*out = make([]string, len(*in))
+		copy(*out, *in)
+	}
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new GatewayAccessPoint.
+func (in *GatewayAccessPoint) DeepCopy() *GatewayAccessPoint {
+	if in == nil {
+		return nil
+	}
+	out := new(GatewayAccessPoint)
+	in.DeepCopyInto(out)
+	return out
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *GatewayListener) DeepCopyInto(out *GatewayListener) {
+	*out = *in
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new GatewayListener.
+func (in *GatewayListener) DeepCopy() *GatewayListener {
+	if in == nil {
+		return nil
+	}
+	out := new(GatewayListener)
+	in.DeepCopyInto(out)
+	return out
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *GatewaySpec) DeepCopyInto(out *GatewaySpec) {
+	*out = *in
+	in.AdditionalMetadata.DeepCopyInto(&out.AdditionalMetadata)
+	if in.GatewayParentRefs != nil {
+		in, out := &in.GatewayParentRefs, &out.GatewayParentRefs
+		*out = make([]apisv1.ParentReference, len(*in))
+		for i := range *in {
+			(*in)[i].DeepCopyInto(&(*out)[i])
+		}
+	}
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new GatewaySpec.
+func (in *GatewaySpec) DeepCopy() *GatewaySpec {
+	if in == nil {
+		return nil
+	}
+	out := new(GatewaySpec)
+	in.DeepCopyInto(out)
+	return out
+}
+
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *ImageOverrideTrait) DeepCopyInto(out *ImageOverrideTrait) {
 	*out = *in
@@ -781,12 +902,53 @@ func (in *IngressSpec) DeepCopy() *IngressSpec {
 	return out
 }
 
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *JSONPatch) DeepCopyInto(out *JSONPatch) {
+	*out = *in
+	if in.Value != nil {
+		in, out := &in.Value, &out.Value
+		*out = new(v1.JSON)
+		(*in).DeepCopyInto(*out)
+	}
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new JSONPatch.
+func (in *JSONPatch) DeepCopy() *JSONPatch {
+	if in == nil {
+		return nil
+	}
+	out := new(JSONPatch)
+	in.DeepCopyInto(out)
+	return out
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in JSONPatches) DeepCopyInto(out *JSONPatches) {
+	{
+		in := &in
+		*out = make(JSONPatches, len(*in))
+		for i := range *in {
+			(*in)[i].DeepCopyInto(&(*out)[i])
+		}
+	}
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new JSONPatches.
+func (in JSONPatches) DeepCopy() JSONPatches {
+	if in == nil {
+		return nil
+	}
+	out := new(JSONPatches)
+	in.DeepCopyInto(out)
+	return *out
+}
+
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *KonnectivityAgentSpec) DeepCopyInto(out *KonnectivityAgentSpec) {
 	*out = *in
 	if in.Tolerations != nil {
 		in, out := &in.Tolerations, &out.Tolerations
-		*out = make([]v1.Toleration, len(*in))
+		*out = make([]corev1.Toleration, len(*in))
 		for i := range *in {
 			(*in)[i].DeepCopyInto(&(*out)[i])
 		}
@@ -796,6 +958,11 @@ func (in *KonnectivityAgentSpec) DeepCopyInto(out *KonnectivityAgentSpec) {
 		*out = make(ExtraArgs, len(*in))
 		copy(*out, *in)
 	}
+	if in.Replicas != nil {
+		in, out := &in.Replicas, &out.Replicas
+		*out = new(int32)
+		**out = **in
+	}
 }
 
 // DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new KonnectivityAgentSpec.
@@ -844,7 +1011,7 @@ func (in *KonnectivityServerSpec) DeepCopyInto(out *KonnectivityServerSpec) {
 	*out = *in
 	if in.Resources != nil {
 		in, out := &in.Resources, &out.Resources
-		*out = new(v1.ResourceRequirements)
+		*out = new(corev1.ResourceRequirements)
 		(*in).DeepCopyInto(*out)
 	}
 	if in.ExtraArgs != nil {
@@ -891,6 +1058,11 @@ func (in *KonnectivityStatus) DeepCopyInto(out *KonnectivityStatus) {
 	in.ClusterRoleBinding.DeepCopyInto(&out.ClusterRoleBinding)
 	in.Agent.DeepCopyInto(&out.Agent)
 	in.Service.DeepCopyInto(&out.Service)
+	if in.Gateway != nil {
+		in, out := &in.Gateway, &out.Gateway
+		*out = new(KubernetesGatewayStatus)
+		(*in).DeepCopyInto(*out)
+	}
 }
 
 // DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new KonnectivityStatus.
@@ -951,6 +1123,123 @@ func (in *KubeadmPhasesStatus) DeepCopy() *KubeadmPhasesStatus {
 	return out
 }
 
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *KubeconfigGenerator) DeepCopyInto(out *KubeconfigGenerator) {
+	*out = *in
+	out.TypeMeta = in.TypeMeta
+	in.ObjectMeta.DeepCopyInto(&out.ObjectMeta)
+	in.Spec.DeepCopyInto(&out.Spec)
+	in.Status.DeepCopyInto(&out.Status)
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new KubeconfigGenerator.
+func (in *KubeconfigGenerator) DeepCopy() *KubeconfigGenerator {
+	if in == nil {
+		return nil
+	}
+	out := new(KubeconfigGenerator)
+	in.DeepCopyInto(out)
+	return out
+}
+
+// DeepCopyObject is an autogenerated deepcopy function, copying the receiver, creating a new runtime.Object.
+func (in *KubeconfigGenerator) DeepCopyObject() runtime.Object {
+	if c := in.DeepCopy(); c != nil {
+		return c
+	}
+	return nil
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *KubeconfigGeneratorList) DeepCopyInto(out *KubeconfigGeneratorList) {
+	*out = *in
+	out.TypeMeta = in.TypeMeta
+	in.ListMeta.DeepCopyInto(&out.ListMeta)
+	if in.Items != nil {
+		in, out := &in.Items, &out.Items
+		*out = make([]KubeconfigGenerator, len(*in))
+		for i := range *in {
+			(*in)[i].DeepCopyInto(&(*out)[i])
+		}
+	}
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new KubeconfigGeneratorList.
+func (in *KubeconfigGeneratorList) DeepCopy() *KubeconfigGeneratorList {
+	if in == nil {
+		return nil
+	}
+	out := new(KubeconfigGeneratorList)
+	in.DeepCopyInto(out)
+	return out
+}
+
+// DeepCopyObject is an autogenerated deepcopy function, copying the receiver, creating a new runtime.Object.
+func (in *KubeconfigGeneratorList) DeepCopyObject() runtime.Object {
+	if c := in.DeepCopy(); c != nil {
+		return c
+	}
+	return nil
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *KubeconfigGeneratorSpec) DeepCopyInto(out *KubeconfigGeneratorSpec) {
+	*out = *in
+	in.NamespaceSelector.DeepCopyInto(&out.NamespaceSelector)
+	in.TenantControlPlaneSelector.DeepCopyInto(&out.TenantControlPlaneSelector)
+	if in.Groups != nil {
+		in, out := &in.Groups, &out.Groups
+		*out = make([]CompoundValue, len(*in))
+		copy(*out, *in)
+	}
+	out.User = in.User
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new KubeconfigGeneratorSpec.
+func (in *KubeconfigGeneratorSpec) DeepCopy() *KubeconfigGeneratorSpec {
+	if in == nil {
+		return nil
+	}
+	out := new(KubeconfigGeneratorSpec)
+	in.DeepCopyInto(out)
+	return out
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *KubeconfigGeneratorStatus) DeepCopyInto(out *KubeconfigGeneratorStatus) {
+	*out = *in
+	if in.Errors != nil {
+		in, out := &in.Errors, &out.Errors
+		*out = make([]KubeconfigGeneratorStatusError, len(*in))
+		copy(*out, *in)
+	}
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new KubeconfigGeneratorStatus.
+func (in *KubeconfigGeneratorStatus) DeepCopy() *KubeconfigGeneratorStatus {
+	if in == nil {
+		return nil
+	}
+	out := new(KubeconfigGeneratorStatus)
+	in.DeepCopyInto(out)
+	return out
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *KubeconfigGeneratorStatusError) DeepCopyInto(out *KubeconfigGeneratorStatusError) {
+	*out = *in
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new KubeconfigGeneratorStatusError.
+func (in *KubeconfigGeneratorStatusError) DeepCopy() *KubeconfigGeneratorStatusError {
+	if in == nil {
+		return nil
+	}
+	out := new(KubeconfigGeneratorStatusError)
+	in.DeepCopyInto(out)
+	return out
+}
+
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *KubeconfigStatus) DeepCopyInto(out *KubeconfigStatus) {
 	*out = *in
@@ -988,6 +1277,13 @@ func (in *KubeconfigsStatus) DeepCopy() *KubeconfigsStatus {
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *KubeletSpec) DeepCopyInto(out *KubeletSpec) {
 	*out = *in
+	if in.ConfigurationJSONPatches != nil {
+		in, out := &in.ConfigurationJSONPatches, &out.ConfigurationJSONPatches
+		*out = make(JSONPatches, len(*in))
+		for i := range *in {
+			(*in)[i].DeepCopyInto(&(*out)[i])
+		}
+	}
 	if in.PreferredAddressTypes != nil {
 		in, out := &in.PreferredAddressTypes, &out.PreferredAddressTypes
 		*out = make([]KubeletPreferredAddressType, len(*in))
@@ -1022,6 +1318,30 @@ func (in *KubernetesDeploymentStatus) DeepCopy() *KubernetesDeploymentStatus {
 	return out
 }
 
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *KubernetesGatewayStatus) DeepCopyInto(out *KubernetesGatewayStatus) {
+	*out = *in
+	in.RouteStatus.DeepCopyInto(&out.RouteStatus)
+	out.RouteRef = in.RouteRef
+	if in.AccessPoints != nil {
+		in, out := &in.AccessPoints, &out.AccessPoints
+		*out = make([]GatewayAccessPoint, len(*in))
+		for i := range *in {
+			(*in)[i].DeepCopyInto(&(*out)[i])
+		}
+	}
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new KubernetesGatewayStatus.
+func (in *KubernetesGatewayStatus) DeepCopy() *KubernetesGatewayStatus {
+	if in == nil {
+		return nil
+	}
+	out := new(KubernetesGatewayStatus)
+	in.DeepCopyInto(out)
+	return out
+}
+
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *KubernetesIngressStatus) DeepCopyInto(out *KubernetesIngressStatus) {
 	*out = *in
@@ -1086,6 +1406,11 @@ func (in *KubernetesStatus) DeepCopyInto(out *KubernetesStatus) {
 		*out = new(KubernetesIngressStatus)
 		(*in).DeepCopyInto(*out)
 	}
+	if in.Gateway != nil {
+		in, out := &in.Gateway, &out.Gateway
+		*out = new(KubernetesGatewayStatus)
+		(*in).DeepCopyInto(*out)
+	}
 }
 
 // DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new KubernetesStatus.
@@ -1153,6 +1478,21 @@ func (in *NetworkProfileSpec) DeepCopy() *NetworkProfileSpec {
 	return out
 }
 
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *Permissions) DeepCopyInto(out *Permissions) {
+	*out = *in
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new Permissions.
+func (in *Permissions) DeepCopy() *Permissions {
+	if in == nil {
+		return nil
+	}
+	out := new(Permissions)
+	in.DeepCopyInto(out)
+	return out
+}
+
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *PublicKeyPrivateKeyPairStatus) DeepCopyInto(out *PublicKeyPrivateKeyPairStatus) {
 	*out = *in
@@ -1204,6 +1544,13 @@ func (in *SecretReference) DeepCopy() *SecretReference {
 func (in *ServiceSpec) DeepCopyInto(out *ServiceSpec) {
 	*out = *in
 	in.AdditionalMetadata.DeepCopyInto(&out.AdditionalMetadata)
+	if in.AdditionalPorts != nil {
+		in, out := &in.AdditionalPorts, &out.AdditionalPorts
+		*out = make([]AdditionalPort, len(*in))
+		for i := range *in {
+			(*in)[i].DeepCopyInto(&(*out)[i])
+		}
+	}
 }
 
 // DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new ServiceSpec.
@@ -1317,6 +1664,12 @@ func (in *TenantControlPlaneList) DeepCopyObject() runtime.Object {
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *TenantControlPlaneSpec) DeepCopyInto(out *TenantControlPlaneSpec) {
 	*out = *in
+	out.WritePermissions = in.WritePermissions
+	if in.DataStoreOverrides != nil {
+		in, out := &in.DataStoreOverrides, &out.DataStoreOverrides
+		*out = make([]DataStoreOverride, len(*in))
+		copy(*out, *in)
+	}
 	in.ControlPlane.DeepCopyInto(&out.ControlPlane)
 	in.Kubernetes.DeepCopyInto(&out.Kubernetes)
 	in.NetworkProfile.DeepCopyInto(&out.NetworkProfile)

charts/kamaji-crds/.helmignore

@@ -0,0 +1,28 @@
+# Patterns to ignore when building packages.
+# This supports shell glob matching, relative path matching, and
+# negation (prefixed with !). Only one pattern per line.
+.DS_Store
+# Common VCS dirs
+.git/
+.gitignore
+.bzr/
+.bzrignore
+.hg/
+.hgignore
+.svn/
+# Common backup files
+*.swp
+*.bak
+*.tmp
+*.orig
+*~
+# Various IDEs
+.project
+.idea/
+*.tmproj
+.vscode/
+# Helm source files
+README.md.gotmpl
+.helmignore
+# Build tools
+Makefile

charts/kamaji-crds/Chart.yaml

@@ -0,0 +1,39 @@
+apiVersion: v2
+appVersion: latest
+description: Kamaji is the Hosted Control Plane Manager for Kubernetes.
+home: https://github.com/clastix/kamaji
+icon: https://github.com/clastix/kamaji/raw/master/assets/logo-colored.png
+maintainers:
+  - email: dario@tranchitella.eu
+    name: Dario Tranchitella
+    url: https://clastix.io
+  - email: me@bsctl.io
+    name: Adriano Pezzuto
+    url: https://clastix.io
+name: kamaji-crds
+sources:
+  - https://github.com/clastix/kamaji
+type: application
+version: 0.0.0+latest
+annotations:
+  artifacthub.io/crds: |
+    - kind: TenantControlPlane
+      version: v1alpha1
+      name: tenantcontrolplanes.kamaji.clastix.io
+      displayName: TenantControlPlane
+      description: TenantControlPlane defines the desired state for a Control Plane backed by Kamaji.
+    - kind: DataStore
+      version: v1alpha1
+      name: datastores.kamaji.clastix.io
+      displayName: DataStore
+      description: DataStores is holding all the required details to communicate with a Datastore, such as etcd, MySQL, PostgreSQL, and NATS.
+  artifacthub.io/links: |
+    - name: CLASTIX
+      url: https://clastix.io
+    - name: support
+      url: https://clastix.io/support
+  artifacthub.io/changes: |
+    - kind: changed
+      description: Upgrading support to Kubernetes v1.35
+    - kind: added
+      description: Supporting multiple Datastore via etcd overrides

charts/kamaji-crds/Makefile

@@ -0,0 +1,9 @@
+docs: HELMDOCS_VERSION := v1.8.1
+docs: docker
+	@docker run --rm -v "$$(pwd):/helm-docs" -u $$(id -u) jnorwood/helm-docs:$(HELMDOCS_VERSION)
+
+docker:
+	@hash docker 2>/dev/null || {\
+		echo "You need docker" &&\
+		exit 1;\
+	}

charts/kamaji-crds/NOTES.txt

@@ -0,0 +1,2 @@
+Kamaji Custom Resource Definitions have been installed properly:
+you can proceed to upgrade your Kamaji operator instance.

charts/kamaji-crds/README.md

@@ -0,0 +1,66 @@
+# kamaji-crds
+
+![Version: 0.0.0+latest](https://img.shields.io/badge/Version-0.0.0+latest-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![AppVersion: latest](https://img.shields.io/badge/AppVersion-latest-informational?style=flat-square)
+
+Kamaji is the Hosted Control Plane Manager for Kubernetes.
+
+## Maintainers
+
+| Name | Email | Url |
+| ---- | ------ | --- |
+| Dario Tranchitella | <dario@tranchitella.eu> | <https://clastix.io> |
+| Adriano Pezzuto | <me@bsctl.io> | <https://clastix.io> |
+
+## Source Code
+
+* <https://github.com/clastix/kamaji>
+
+[Kamaji](https://github.com/clastix/kamaji) Custom Resource Definitions packaged as Helm Charts.
+
+## How to use this chart
+
+Add `clastix` Helm repository:
+
+    helm repo add clastix https://clastix.github.io/charts
+
+Install the Chart with the release name `kamaji-crds`:
+
+    helm upgrade --install --namespace kamaji-system --create-namespace kamaji-crds clastix/kamaji-crds
+
+Show the status:
+
+    helm status kamaji-crds -n kamaji-system
+
+Upgrade the Chart
+
+    helm upgrade kamaji-crds -n kamaji-system clastix/kamaji-crds
+
+Uninstall the Chart
+
+    helm uninstall kamaji-crds -n kamaji-system
+
+## Customize the installation
+
+There are two methods for specifying overrides of values during Chart installation: `--values` and `--set`.
+
+The `--values` option is the preferred method because it allows you to keep your overrides in a YAML file, rather than specifying them all on the command line. Create a copy of the YAML file `values.yaml` and add your overrides to it.
+
+Specify your overrides file when you install the Chart:
+
+    helm upgrade kamaji-crds --install --namespace kamaji-system --create-namespace clastix/kamaji-crds --values myvalues.yaml
+
+The values in your overrides file `myvalues.yaml` will override their counterparts in the Chart's values.yaml file. Any values in `values.yaml` that weren’t overridden will keep their defaults.
+
+If you only need to make minor customizations, you can specify them on the command line by using the `--set` option. For example:
+
+    helm upgrade kamaji-crds --install --namespace kamaji-system --create-namespace clastix/kamaji-crds --set kamajiCertificateName=kamaji
+
+## Values
+
+| Key | Type | Default | Description |
+|-----|------|---------|-------------|
+| fullnameOverride | string | `""` | Overrides the full name of the resources created by the chart. |
+| kamajiCertificateName | string | `"kamaji-serving-cert"` | The cert-manager Certificate resource name, holding the Certificate Authority for webhooks. |
+| kamajiNamespace | string | `"kamaji-system"` | The namespace where Kamaji has been installed: required to inject the Certificate Authority for cert-manager. |
+| kamajiService | string | `"kamaji-webhook-service"` | The Kamaji webhook Service name. |
+| nameOverride | string | `""` | Overrides the name of the chart for resource naming purposes. |

charts/kamaji-crds/README.md.gotmpl

@@ -0,0 +1,54 @@
+{{ template "chart.header" . }}
+{{ template "chart.deprecationWarning" . }}
+
+{{ template "chart.badgesSection" . }}
+
+{{ template "chart.description" . }}
+
+{{ template "chart.maintainersSection" . }}
+
+{{ template "chart.sourcesSection" . }}
+
+{{ template "chart.requirementsSection" . }}
+
+[Kamaji](https://github.com/clastix/kamaji) Custom Resource Definitions packaged as Helm Charts.
+
+## How to use this chart
+
+Add `clastix` Helm repository:
+
+    helm repo add clastix https://clastix.github.io/charts
+
+Install the Chart with the release name `kamaji-crds`:
+
+    helm upgrade --install --namespace kamaji-system --create-namespace kamaji-crds clastix/kamaji-crds
+
+Show the status:
+
+    helm status kamaji-crds -n kamaji-system
+
+Upgrade the Chart
+
+    helm upgrade kamaji-crds -n kamaji-system clastix/kamaji-crds
+
+Uninstall the Chart
+
+    helm uninstall kamaji-crds -n kamaji-system
+
+## Customize the installation
+
+There are two methods for specifying overrides of values during Chart installation: `--values` and `--set`.
+
+The `--values` option is the preferred method because it allows you to keep your overrides in a YAML file, rather than specifying them all on the command line. Create a copy of the YAML file `values.yaml` and add your overrides to it.
+
+Specify your overrides file when you install the Chart:
+
+    helm upgrade kamaji-crds --install --namespace kamaji-system --create-namespace clastix/kamaji-crds --values myvalues.yaml
+
+The values in your overrides file `myvalues.yaml` will override their counterparts in the Chart's values.yaml file. Any values in `values.yaml` that weren’t overridden will keep their defaults.
+
+If you only need to make minor customizations, you can specify them on the command line by using the `--set` option. For example:
+
+    helm upgrade kamaji-crds --install --namespace kamaji-system --create-namespace clastix/kamaji-crds --set kamajiCertificateName=kamaji
+
+{{ template "chart.valuesSection" . }}

charts/kamaji-crds/hack/crd-conversion.yaml

@@ -0,0 +1,11 @@
+spec:
+  conversion:
+    strategy: Webhook
+    webhook:
+      clientConfig:
+        service:
+          name: kamaji-webhook-service
+          namespace: kamaji-system
+          path: /convert
+      conversionReviewVersions:
+        - v1

charts/kamaji-crds/hack/kamaji.clastix.io_datastores_spec.yaml

@@ -0,0 +1,292 @@
+group: kamaji.clastix.io
+names:
+  kind: DataStore
+  listKind: DataStoreList
+  plural: datastores
+  singular: datastore
+scope: Cluster
+versions:
+  - additionalPrinterColumns:
+      - description: Kamaji data store driver
+        jsonPath: .spec.driver
+        name: Driver
+        type: string
+      - description: Age
+        jsonPath: .metadata.creationTimestamp
+        name: Age
+        type: date
+    name: v1alpha1
+    schema:
+      openAPIV3Schema:
+        description: DataStore is the Schema for the datastores API.
+        properties:
+          apiVersion:
+            description: |-
+              APIVersion defines the versioned schema of this representation of an object.
+              Servers should convert recognized schemas to the latest internal value, and
+              may reject unrecognized values.
+              More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#resources
+            type: string
+          kind:
+            description: |-
+              Kind is a string value representing the REST resource this object represents.
+              Servers may infer this from the endpoint the client submits requests to.
+              Cannot be updated.
+              In CamelCase.
+              More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds
+            type: string
+          metadata:
+            type: object
+          spec:
+            description: DataStoreSpec defines the desired state of DataStore.
+            properties:
+              basicAuth:
+                description: |-
+                  In case of authentication enabled for the given data store, specifies the username and password pair.
+                  This value is optional.
+                properties:
+                  password:
+                    properties:
+                      content:
+                        description: |-
+                          Bare content of the file, base64 encoded.
+                          It has precedence over the SecretReference value.
+                        format: byte
+                        type: string
+                      secretReference:
+                        properties:
+                          keyPath:
+                            description: |-
+                              Name of the key for the given Secret reference where the content is stored.
+                              This value is mandatory.
+                            minLength: 1
+                            type: string
+                          name:
+                            description: name is unique within a namespace to reference a secret resource.
+                            type: string
+                          namespace:
+                            description: namespace defines the space within which the secret name must be unique.
+                            type: string
+                        required:
+                          - keyPath
+                        type: object
+                        x-kubernetes-map-type: atomic
+                    type: object
+                  username:
+                    properties:
+                      content:
+                        description: |-
+                          Bare content of the file, base64 encoded.
+                          It has precedence over the SecretReference value.
+                        format: byte
+                        type: string
+                      secretReference:
+                        properties:
+                          keyPath:
+                            description: |-
+                              Name of the key for the given Secret reference where the content is stored.
+                              This value is mandatory.
+                            minLength: 1
+                            type: string
+                          name:
+                            description: name is unique within a namespace to reference a secret resource.
+                            type: string
+                          namespace:
+                            description: namespace defines the space within which the secret name must be unique.
+                            type: string
+                        required:
+                          - keyPath
+                        type: object
+                        x-kubernetes-map-type: atomic
+                    type: object
+                required:
+                  - password
+                  - username
+                type: object
+              driver:
+                description: The driver to use to connect to the shared datastore.
+                enum:
+                  - etcd
+                  - MySQL
+                  - PostgreSQL
+                  - NATS
+                type: string
+                x-kubernetes-validations:
+                  - message: Datastore driver is immutable
+                    rule: self == oldSelf
+              endpoints:
+                description: |-
+                  List of the endpoints to connect to the shared datastore.
+                  No need for protocol, just bare IP/FQDN and port.
+                items:
+                  type: string
+                minItems: 1
+                type: array
+              tlsConfig:
+                description: |-
+                  Defines the TLS/SSL configuration required to connect to the data store in a secure way.
+                  This value is optional.
+                properties:
+                  certificateAuthority:
+                    description: |-
+                      Retrieve the Certificate Authority certificate and private key, such as bare content of the file, or a SecretReference.
+                      The key reference is required since etcd authentication is based on certificates, and Kamaji is responsible in creating this.
+                    properties:
+                      certificate:
+                        properties:
+                          content:
+                            description: |-
+                              Bare content of the file, base64 encoded.
+                              It has precedence over the SecretReference value.
+                            format: byte
+                            type: string
+                          secretReference:
+                            properties:
+                              keyPath:
+                                description: |-
+                                  Name of the key for the given Secret reference where the content is stored.
+                                  This value is mandatory.
+                                minLength: 1
+                                type: string
+                              name:
+                                description: name is unique within a namespace to reference a secret resource.
+                                type: string
+                              namespace:
+                                description: namespace defines the space within which the secret name must be unique.
+                                type: string
+                            required:
+                              - keyPath
+                            type: object
+                            x-kubernetes-map-type: atomic
+                        type: object
+                      privateKey:
+                        properties:
+                          content:
+                            description: |-
+                              Bare content of the file, base64 encoded.
+                              It has precedence over the SecretReference value.
+                            format: byte
+                            type: string
+                          secretReference:
+                            properties:
+                              keyPath:
+                                description: |-
+                                  Name of the key for the given Secret reference where the content is stored.
+                                  This value is mandatory.
+                                minLength: 1
+                                type: string
+                              name:
+                                description: name is unique within a namespace to reference a secret resource.
+                                type: string
+                              namespace:
+                                description: namespace defines the space within which the secret name must be unique.
+                                type: string
+                            required:
+                              - keyPath
+                            type: object
+                            x-kubernetes-map-type: atomic
+                        type: object
+                    required:
+                      - certificate
+                    type: object
+                  clientCertificate:
+                    description: Specifies the SSL/TLS key and private key pair used to connect to the data store.
+                    properties:
+                      certificate:
+                        properties:
+                          content:
+                            description: |-
+                              Bare content of the file, base64 encoded.
+                              It has precedence over the SecretReference value.
+                            format: byte
+                            type: string
+                          secretReference:
+                            properties:
+                              keyPath:
+                                description: |-
+                                  Name of the key for the given Secret reference where the content is stored.
+                                  This value is mandatory.
+                                minLength: 1
+                                type: string
+                              name:
+                                description: name is unique within a namespace to reference a secret resource.
+                                type: string
+                              namespace:
+                                description: namespace defines the space within which the secret name must be unique.
+                                type: string
+                            required:
+                              - keyPath
+                            type: object
+                            x-kubernetes-map-type: atomic
+                        type: object
+                      privateKey:
+                        properties:
+                          content:
+                            description: |-
+                              Bare content of the file, base64 encoded.
+                              It has precedence over the SecretReference value.
+                            format: byte
+                            type: string
+                          secretReference:
+                            properties:
+                              keyPath:
+                                description: |-
+                                  Name of the key for the given Secret reference where the content is stored.
+                                  This value is mandatory.
+                                minLength: 1
+                                type: string
+                              name:
+                                description: name is unique within a namespace to reference a secret resource.
+                                type: string
+                              namespace:
+                                description: namespace defines the space within which the secret name must be unique.
+                                type: string
+                            required:
+                              - keyPath
+                            type: object
+                            x-kubernetes-map-type: atomic
+                        type: object
+                    required:
+                      - certificate
+                      - privateKey
+                    type: object
+                required:
+                  - certificateAuthority
+                type: object
+            required:
+              - driver
+              - endpoints
+            type: object
+            x-kubernetes-validations:
+              - message: certificateAuthority privateKey must have secretReference or content when driver is etcd
+                rule: '(self.driver == "etcd") ? (self.tlsConfig != null && (has(self.tlsConfig.certificateAuthority.privateKey.secretReference) || has(self.tlsConfig.certificateAuthority.privateKey.content))) : true'
+              - message: clientCertificate must have secretReference or content when driver is etcd
+                rule: '(self.driver == "etcd") ? (self.tlsConfig != null && (has(self.tlsConfig.clientCertificate.certificate.secretReference) || has(self.tlsConfig.clientCertificate.certificate.content))) : true'
+              - message: clientCertificate privateKey must have secretReference or content when driver is etcd
+                rule: '(self.driver == "etcd") ? (self.tlsConfig != null && (has(self.tlsConfig.clientCertificate.privateKey.secretReference) || has(self.tlsConfig.clientCertificate.privateKey.content))) : true'
+              - message: When driver is not etcd and tlsConfig exists, clientCertificate must be null or contain valid content
+                rule: '(self.driver != "etcd" && has(self.tlsConfig) && has(self.tlsConfig.clientCertificate)) ? (((has(self.tlsConfig.clientCertificate.certificate.secretReference) || has(self.tlsConfig.clientCertificate.certificate.content)))) : true'
+              - message: When driver is not etcd and basicAuth exists, username must have secretReference or content
+                rule: '(self.driver != "etcd" && has(self.basicAuth)) ? ((has(self.basicAuth.username.secretReference) || has(self.basicAuth.username.content))) : true'
+              - message: When driver is not etcd and basicAuth exists, password must have secretReference or content
+                rule: '(self.driver != "etcd" && has(self.basicAuth)) ? ((has(self.basicAuth.password.secretReference) || has(self.basicAuth.password.content))) : true'
+              - message: When driver is not etcd, either tlsConfig or basicAuth must be provided
+                rule: '(self.driver != "etcd") ? (has(self.tlsConfig) || has(self.basicAuth)) : true'
+          status:
+            description: DataStoreStatus defines the observed state of DataStore.
+            properties:
+              observedGeneration:
+                description: ObservedGeneration represents the .metadata.generation that was last reconciled.
+                format: int64
+                type: integer
+              usedBy:
+                description: List of the Tenant Control Planes, namespaced named, using this data store.
+                items:
+                  type: string
+                type: array
+            type: object
+        type: object
+    served: true
+    storage: true
+    subresources:
+      status: {}

charts/kamaji-crds/hack/kamaji.clastix.io_kubeconfiggenerators_spec.yaml

@@ -0,0 +1,218 @@
+group: kamaji.clastix.io
+names:
+  categories:
+    - kamaji
+  kind: KubeconfigGenerator
+  listKind: KubeconfigGeneratorList
+  plural: kubeconfiggenerators
+  shortNames:
+    - kc
+  singular: kubeconfiggenerator
+scope: Cluster
+versions:
+  - additionalPrinterColumns:
+      - description: Age
+        jsonPath: .metadata.creationTimestamp
+        name: Age
+        type: date
+    name: v1alpha1
+    schema:
+      openAPIV3Schema:
+        description: KubeconfigGenerator is the Schema for the kubeconfiggenerators API.
+        properties:
+          apiVersion:
+            description: |-
+              APIVersion defines the versioned schema of this representation of an object.
+              Servers should convert recognized schemas to the latest internal value, and
+              may reject unrecognized values.
+              More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#resources
+            type: string
+          kind:
+            description: |-
+              Kind is a string value representing the REST resource this object represents.
+              Servers may infer this from the endpoint the client submits requests to.
+              Cannot be updated.
+              In CamelCase.
+              More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds
+            type: string
+          metadata:
+            type: object
+          spec:
+            properties:
+              controlPlaneEndpointFrom:
+                default: admin.svc
+                description: |-
+                  ControlPlaneEndpointFrom is the key used to extract the Tenant Control Plane endpoint that must be used by the generator.
+                  The targeted Secret is the `${TCP}-admin-kubeconfig` one, default to `admin.svc`.
+                type: string
+              groups:
+                description: |-
+                  Groups is resolved a set of strings used to assign the x509 organisations field.
+                  It will be recognised by Kubernetes as user groups.
+                items:
+                  description: |-
+                    CompoundValue allows defining a static, or a dynamic value.
+                    Options are mutually exclusive, just one should be picked up.
+                  properties:
+                    fromDefinition:
+                      description: |-
+                        FromDefinition is used to generate a dynamic value,
+                        it uses the dot notation to access fields from the referenced TenantControlPlane object:
+                        e.g.: metadata.name
+                      type: string
+                    stringValue:
+                      description: StringValue is a static string value.
+                      type: string
+                  type: object
+                  x-kubernetes-validations:
+                    - message: Either stringValue or fromDefinition must be set, but not both.
+                      rule: (has(self.stringValue) || has(self.fromDefinition)) && !(has(self.stringValue) && has(self.fromDefinition))
+                type: array
+              namespaceSelector:
+                description: NamespaceSelector is used to filter Namespaces from which the generator should extract TenantControlPlane objects.
+                properties:
+                  matchExpressions:
+                    description: matchExpressions is a list of label selector requirements. The requirements are ANDed.
+                    items:
+                      description: |-
+                        A label selector requirement is a selector that contains values, a key, and an operator that
+                        relates the key and values.
+                      properties:
+                        key:
+                          description: key is the label key that the selector applies to.
+                          type: string
+                        operator:
+                          description: |-
+                            operator represents a key's relationship to a set of values.
+                            Valid operators are In, NotIn, Exists and DoesNotExist.
+                          type: string
+                        values:
+                          description: |-
+                            values is an array of string values. If the operator is In or NotIn,
+                            the values array must be non-empty. If the operator is Exists or DoesNotExist,
+                            the values array must be empty. This array is replaced during a strategic
+                            merge patch.
+                          items:
+                            type: string
+                          type: array
+                          x-kubernetes-list-type: atomic
+                      required:
+                        - key
+                        - operator
+                      type: object
+                    type: array
+                    x-kubernetes-list-type: atomic
+                  matchLabels:
+                    additionalProperties:
+                      type: string
+                    description: |-
+                      matchLabels is a map of {key,value} pairs. A single {key,value} in the matchLabels
+                      map is equivalent to an element of matchExpressions, whose key field is "key", the
+                      operator is "In", and the values array contains only "value". The requirements are ANDed.
+                    type: object
+                type: object
+                x-kubernetes-map-type: atomic
+              tenantControlPlaneSelector:
+                description: TenantControlPlaneSelector is used to filter the TenantControlPlane objects that should be address by the generator.
+                properties:
+                  matchExpressions:
+                    description: matchExpressions is a list of label selector requirements. The requirements are ANDed.
+                    items:
+                      description: |-
+                        A label selector requirement is a selector that contains values, a key, and an operator that
+                        relates the key and values.
+                      properties:
+                        key:
+                          description: key is the label key that the selector applies to.
+                          type: string
+                        operator:
+                          description: |-
+                            operator represents a key's relationship to a set of values.
+                            Valid operators are In, NotIn, Exists and DoesNotExist.
+                          type: string
+                        values:
+                          description: |-
+                            values is an array of string values. If the operator is In or NotIn,
+                            the values array must be non-empty. If the operator is Exists or DoesNotExist,
+                            the values array must be empty. This array is replaced during a strategic
+                            merge patch.
+                          items:
+                            type: string
+                          type: array
+                          x-kubernetes-list-type: atomic
+                      required:
+                        - key
+                        - operator
+                      type: object
+                    type: array
+                    x-kubernetes-list-type: atomic
+                  matchLabels:
+                    additionalProperties:
+                      type: string
+                    description: |-
+                      matchLabels is a map of {key,value} pairs. A single {key,value} in the matchLabels
+                      map is equivalent to an element of matchExpressions, whose key field is "key", the
+                      operator is "In", and the values array contains only "value". The requirements are ANDed.
+                    type: object
+                type: object
+                x-kubernetes-map-type: atomic
+              user:
+                description: User resolves to a string to identify the client, assigned to the x509 Common Name field.
+                properties:
+                  fromDefinition:
+                    description: |-
+                      FromDefinition is used to generate a dynamic value,
+                      it uses the dot notation to access fields from the referenced TenantControlPlane object:
+                      e.g.: metadata.name
+                    type: string
+                  stringValue:
+                    description: StringValue is a static string value.
+                    type: string
+                type: object
+                x-kubernetes-validations:
+                  - message: Either stringValue or fromDefinition must be set, but not both.
+                    rule: (has(self.stringValue) || has(self.fromDefinition)) && !(has(self.stringValue) && has(self.fromDefinition))
+            required:
+              - user
+            type: object
+          status:
+            description: KubeconfigGeneratorStatus defines the observed state of KubeconfigGenerator.
+            properties:
+              availableResources:
+                default: 0
+                description: |-
+                  AvailableResources is the sum of successfully generated resources.
+                  In case of a different value compared to Resources, check the field errors.
+                type: integer
+              errors:
+                description: Errors is the list of failed kubeconfig generations.
+                items:
+                  properties:
+                    message:
+                      description: Message is the error message recorded upon the last generator run.
+                      type: string
+                    resource:
+                      description: Resource is the Namespaced name of the errored resource.
+                      type: string
+                  required:
+                    - message
+                    - resource
+                  type: object
+                type: array
+              observedGeneration:
+                description: ObservedGeneration represents the .metadata.generation that was last reconciled.
+                format: int64
+                type: integer
+              resources:
+                default: 0
+                description: Resources is the sum of targeted TenantControlPlane objects.
+                type: integer
+            required:
+              - availableResources
+              - resources
+            type: object
+        type: object
+    served: true
+    storage: true
+    subresources:
+      status: {}

charts/kamaji-crds/templates/_helpers.tpl

@@ -0,0 +1,49 @@
+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "kamaji-crds.name" -}}
+{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Create a default fully qualified app name.
+We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
+If release name contains chart name it will be used as a full name.
+*/}}
+{{- define "kamaji.fullname" -}}
+{{- if .Values.fullnameOverride }}
+{{- .Values.fullnameOverride | trunc 63 | trimSuffix "-" }}
+{{- else }}
+{{- $name := default .Chart.Name .Values.nameOverride }}
+{{- if contains $name .Release.Name }}
+{{- .Release.Name | trunc 63 | trimSuffix "-" }}
+{{- else }}
+{{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" }}
+{{- end }}
+{{- end }}
+{{- end }}
+
+{{/*
+Create chart name and version as used by the chart label.
+*/}}
+{{- define "kamaji-crds.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Create the cert-manager annotation to inject Certificate CA.
+*/}}
+{{- define "kamaji-crds.certManagerAnnotation" -}}
+{{- printf "%s/%s" (required "A valid .Values.kamajiNamespace is required" .Values.kamajiNamespace) (required "A valid .Values.kamajiCertificateName is required" .Values.kamajiCertificateName) }}
+{{- end }}
+
+{{/*
+Common labels
+*/}}
+{{- define "kamaji-crds.labels" -}}
+helm.sh/chart: {{ include "kamaji-crds.chart" . }}
+app.kubernetes.io/name: {{ include "kamaji-crds.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+app.kubernetes.io/component: "crds"
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end }}

charts/kamaji-crds/templates/kamaji.clastix.io_datastores.yaml

@@ -0,0 +1,10 @@
+apiVersion: apiextensions.k8s.io/v1
+kind: CustomResourceDefinition
+metadata:
+  annotations:
+    cert-manager.io/inject-ca-from: {{ include "kamaji-crds.certManagerAnnotation" . }}
+  labels:
+    {{- include "kamaji-crds.labels" . | nindent 4 }}
+  name: datastores.kamaji.clastix.io
+spec:
+  {{ tpl (.Files.Get "hack/kamaji.clastix.io_datastores_spec.yaml") . | nindent 2}}

charts/kamaji-crds/templates/kamaji.clastix.io_kubeconfiggenerators.yaml

@@ -0,0 +1,10 @@
+apiVersion: apiextensions.k8s.io/v1
+kind: CustomResourceDefinition
+metadata:
+  annotations:
+    cert-manager.io/inject-ca-from: {{ include "kamaji-crds.certManagerAnnotation" . }}
+  labels:
+    {{- include "kamaji-crds.labels" . | nindent 4 }}
+  name: kubeconfiggenerators.kamaji.clastix.io
+spec:
+  {{ tpl (.Files.Get "hack/kamaji.clastix.io_kubeconfiggenerators_spec.yaml") . | nindent 2 }}

charts/kamaji-crds/templates/kamaji.clastix.io_tenantcontrolplanes.yaml

@@ -0,0 +1,10 @@
+apiVersion: apiextensions.k8s.io/v1
+kind: CustomResourceDefinition
+metadata:
+  annotations:
+    cert-manager.io/inject-ca-from: {{ include "kamaji-crds.certManagerAnnotation" . }}
+  labels:
+    {{- include "kamaji-crds.labels" . | nindent 4 }}
+  name: tenantcontrolplanes.kamaji.clastix.io
+spec:
+  {{ tpl (.Files.Get "hack/kamaji.clastix.io_tenantcontrolplanes_spec.yaml") . | nindent 2 }}

charts/kamaji-crds/values.yaml

@@ -0,0 +1,15 @@
+# Default values for kamaji-crds.
+# This is a YAML-formatted file.
+# Declare variables to be passed into your templates.
+
+# -- Overrides the name of the chart for resource naming purposes.
+nameOverride: ""
+# -- Overrides the full name of the resources created by the chart.
+fullnameOverride: ""
+
+# -- The namespace where Kamaji has been installed: required to inject the Certificate Authority for cert-manager.
+kamajiNamespace: kamaji-system
+# -- The Kamaji webhook Service name.
+kamajiService: kamaji-webhook-service
+# -- The cert-manager Certificate resource name, holding the Certificate Authority for webhooks.
+kamajiCertificateName: kamaji-serving-cert

charts/kamaji/README.md

@@ -83,6 +83,24 @@ Here the values you can override:
 | image.tag | string | `nil` | Overrides the image tag whose default is the chart appVersion. |
 | imagePullSecrets | list | `[]` |  |
 | kamaji-etcd | object | `{"clusterDomain":"cluster.local","datastore":{"enabled":true,"name":"default"},"deploy":true,"fullnameOverride":"kamaji-etcd"}` | Subchart: See https://github.com/clastix/kamaji-etcd/blob/master/charts/kamaji-etcd/values.yaml |
+| kubeconfigGenerator.affinity | object | `{}` | Kubernetes affinity rules to apply to Kubeconfig Generator controller pods |
+| kubeconfigGenerator.enableLeaderElect | bool | `true` | Enables the leader election. |
+| kubeconfigGenerator.enabled | bool | `false` | Toggle to deploy the Kubeconfig Generator Deployment. |
+| kubeconfigGenerator.extraArgs | list | `[]` | A list of extra arguments to add to the Kubeconfig Generator controller default ones. |
+| kubeconfigGenerator.fullnameOverride | string | `""` |  |
+| kubeconfigGenerator.healthProbeBindAddress | string | `":8081"` | The address the probe endpoint binds to. |
+| kubeconfigGenerator.loggingDevel.enable | bool | `false` | Development Mode defaults(encoder=consoleEncoder,logLevel=Debug,stackTraceLevel=Warn). Production Mode defaults(encoder=jsonEncoder,logLevel=Info,stackTraceLevel=Error) |
+| kubeconfigGenerator.nodeSelector | object | `{}` | Kubernetes node selector rules to schedule Kubeconfig Generator controller |
+| kubeconfigGenerator.podAnnotations | object | `{}` | The annotations to apply to the Kubeconfig Generator controller pods. |
+| kubeconfigGenerator.podSecurityContext | object | `{"runAsNonRoot":true}` | The securityContext to apply to the Kubeconfig Generator controller pods. |
+| kubeconfigGenerator.replicaCount | int | `2` | The number of the pod replicas for the Kubeconfig Generator controller. |
+| kubeconfigGenerator.resources.limits.cpu | string | `"200m"` |  |
+| kubeconfigGenerator.resources.limits.memory | string | `"512Mi"` |  |
+| kubeconfigGenerator.resources.requests.cpu | string | `"200m"` |  |
+| kubeconfigGenerator.resources.requests.memory | string | `"512Mi"` |  |
+| kubeconfigGenerator.securityContext | object | `{"allowPrivilegeEscalation":false}` | The securityContext to apply to the Kubeconfig Generator controller container only. |
+| kubeconfigGenerator.serviceAccountOverride | string | `""` | The name of the service account to use. If not set, the root Kamaji one will be used. |
+| kubeconfigGenerator.tolerations | list | `[]` | Kubernetes node taints that the Kubeconfig Generator controller pods would tolerate |
 | livenessProbe | object | `{"httpGet":{"path":"/healthz","port":"healthcheck"},"initialDelaySeconds":15,"periodSeconds":20}` | The livenessProbe for the controller container |
 | loggingDevel.enable | bool | `false` | Development Mode defaults(encoder=consoleEncoder,logLevel=Debug,stackTraceLevel=Warn). Production Mode defaults(encoder=jsonEncoder,logLevel=Info,stackTraceLevel=Error) (default false) |
 | metricsBindAddress | string | `":8080"` | The address the metric endpoint binds to. (default ":8080") |

charts/kamaji/controller-gen/clusterrole.yaml

@@ -1,3 +1,25 @@
+- apiGroups:
+    - ""
+  resources:
+    - configmaps
+    - secrets
+    - services
+  verbs:
+    - create
+    - delete
+    - get
+    - list
+    - patch
+    - update
+    - watch
+- apiGroups:
+    - ""
+  resources:
+    - namespaces
+  verbs:
+    - get
+    - list
+    - watch
 - apiGroups:
     - apps
   resources:
@@ -21,11 +43,19 @@
     - list
     - watch
 - apiGroups:
-    - ""
+    - gateway.networking.k8s.io
   resources:
-    - configmaps
-    - secrets
-    - services
+    - gateways
+  verbs:
+    - get
+    - list
+    - watch
+- apiGroups:
+    - gateway.networking.k8s.io
+  resources:
+    - grpcroutes
+    - httproutes
+    - tlsroutes
   verbs:
     - create
     - delete
@@ -51,6 +81,7 @@
     - kamaji.clastix.io
   resources:
     - datastores/status
+    - kubeconfiggenerators/status
     - tenantcontrolplanes/status
   verbs:
     - get
@@ -59,6 +90,18 @@
 - apiGroups:
     - kamaji.clastix.io
   resources:
+    - kubeconfiggenerators
+  verbs:
+    - create
+    - get
+    - list
+    - patch
+    - update
+    - watch
+- apiGroups:
+    - kamaji.clastix.io
+  resources:
+    - kubeconfiggenerators/finalizers
     - tenantcontrolplanes/finalizers
   verbs:
     - update

charts/kamaji/crds/kamaji.clastix.io_datastores.yaml

@@ -4,7 +4,7 @@ kind: CustomResourceDefinition
 metadata:
   annotations:
     cert-manager.io/inject-ca-from: kamaji-system/kamaji-serving-cert
-    controller-gen.kubebuilder.io/version: v0.16.1
+    controller-gen.kubebuilder.io/version: v0.20.0
   name: datastores.kamaji.clastix.io
 spec:
   group: kamaji.clastix.io
@@ -284,6 +284,10 @@ spec:
             status:
               description: DataStoreStatus defines the observed state of DataStore.
               properties:
+                observedGeneration:
+                  description: ObservedGeneration represents the .metadata.generation that was last reconciled.
+                  format: int64
+                  type: integer
                 usedBy:
                   description: List of the Tenant Control Planes, namespaced named, using this data store.
                   items:

charts/kamaji/crds/kamaji.clastix.io_kubeconfiggenerators.yaml

@@ -0,0 +1,226 @@
+apiVersion: apiextensions.k8s.io/v1
+kind: CustomResourceDefinition
+metadata:
+  annotations:
+    cert-manager.io/inject-ca-from: kamaji-system/kamaji-serving-cert
+    controller-gen.kubebuilder.io/version: v0.20.0
+  name: kubeconfiggenerators.kamaji.clastix.io
+spec:
+  group: kamaji.clastix.io
+  names:
+    categories:
+      - kamaji
+    kind: KubeconfigGenerator
+    listKind: KubeconfigGeneratorList
+    plural: kubeconfiggenerators
+    shortNames:
+      - kc
+    singular: kubeconfiggenerator
+  scope: Cluster
+  versions:
+    - additionalPrinterColumns:
+        - description: Age
+          jsonPath: .metadata.creationTimestamp
+          name: Age
+          type: date
+      name: v1alpha1
+      schema:
+        openAPIV3Schema:
+          description: KubeconfigGenerator is the Schema for the kubeconfiggenerators API.
+          properties:
+            apiVersion:
+              description: |-
+                APIVersion defines the versioned schema of this representation of an object.
+                Servers should convert recognized schemas to the latest internal value, and
+                may reject unrecognized values.
+                More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#resources
+              type: string
+            kind:
+              description: |-
+                Kind is a string value representing the REST resource this object represents.
+                Servers may infer this from the endpoint the client submits requests to.
+                Cannot be updated.
+                In CamelCase.
+                More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds
+              type: string
+            metadata:
+              type: object
+            spec:
+              properties:
+                controlPlaneEndpointFrom:
+                  default: admin.svc
+                  description: |-
+                    ControlPlaneEndpointFrom is the key used to extract the Tenant Control Plane endpoint that must be used by the generator.
+                    The targeted Secret is the `${TCP}-admin-kubeconfig` one, default to `admin.svc`.
+                  type: string
+                groups:
+                  description: |-
+                    Groups is resolved a set of strings used to assign the x509 organisations field.
+                    It will be recognised by Kubernetes as user groups.
+                  items:
+                    description: |-
+                      CompoundValue allows defining a static, or a dynamic value.
+                      Options are mutually exclusive, just one should be picked up.
+                    properties:
+                      fromDefinition:
+                        description: |-
+                          FromDefinition is used to generate a dynamic value,
+                          it uses the dot notation to access fields from the referenced TenantControlPlane object:
+                          e.g.: metadata.name
+                        type: string
+                      stringValue:
+                        description: StringValue is a static string value.
+                        type: string
+                    type: object
+                    x-kubernetes-validations:
+                      - message: Either stringValue or fromDefinition must be set, but not both.
+                        rule: (has(self.stringValue) || has(self.fromDefinition)) && !(has(self.stringValue) && has(self.fromDefinition))
+                  type: array
+                namespaceSelector:
+                  description: NamespaceSelector is used to filter Namespaces from which the generator should extract TenantControlPlane objects.
+                  properties:
+                    matchExpressions:
+                      description: matchExpressions is a list of label selector requirements. The requirements are ANDed.
+                      items:
+                        description: |-
+                          A label selector requirement is a selector that contains values, a key, and an operator that
+                          relates the key and values.
+                        properties:
+                          key:
+                            description: key is the label key that the selector applies to.
+                            type: string
+                          operator:
+                            description: |-
+                              operator represents a key's relationship to a set of values.
+                              Valid operators are In, NotIn, Exists and DoesNotExist.
+                            type: string
+                          values:
+                            description: |-
+                              values is an array of string values. If the operator is In or NotIn,
+                              the values array must be non-empty. If the operator is Exists or DoesNotExist,
+                              the values array must be empty. This array is replaced during a strategic
+                              merge patch.
+                            items:
+                              type: string
+                            type: array
+                            x-kubernetes-list-type: atomic
+                        required:
+                          - key
+                          - operator
+                        type: object
+                      type: array
+                      x-kubernetes-list-type: atomic
+                    matchLabels:
+                      additionalProperties:
+                        type: string
+                      description: |-
+                        matchLabels is a map of {key,value} pairs. A single {key,value} in the matchLabels
+                        map is equivalent to an element of matchExpressions, whose key field is "key", the
+                        operator is "In", and the values array contains only "value". The requirements are ANDed.
+                      type: object
+                  type: object
+                  x-kubernetes-map-type: atomic
+                tenantControlPlaneSelector:
+                  description: TenantControlPlaneSelector is used to filter the TenantControlPlane objects that should be address by the generator.
+                  properties:
+                    matchExpressions:
+                      description: matchExpressions is a list of label selector requirements. The requirements are ANDed.
+                      items:
+                        description: |-
+                          A label selector requirement is a selector that contains values, a key, and an operator that
+                          relates the key and values.
+                        properties:
+                          key:
+                            description: key is the label key that the selector applies to.
+                            type: string
+                          operator:
+                            description: |-
+                              operator represents a key's relationship to a set of values.
+                              Valid operators are In, NotIn, Exists and DoesNotExist.
+                            type: string
+                          values:
+                            description: |-
+                              values is an array of string values. If the operator is In or NotIn,
+                              the values array must be non-empty. If the operator is Exists or DoesNotExist,
+                              the values array must be empty. This array is replaced during a strategic
+                              merge patch.
+                            items:
+                              type: string
+                            type: array
+                            x-kubernetes-list-type: atomic
+                        required:
+                          - key
+                          - operator
+                        type: object
+                      type: array
+                      x-kubernetes-list-type: atomic
+                    matchLabels:
+                      additionalProperties:
+                        type: string
+                      description: |-
+                        matchLabels is a map of {key,value} pairs. A single {key,value} in the matchLabels
+                        map is equivalent to an element of matchExpressions, whose key field is "key", the
+                        operator is "In", and the values array contains only "value". The requirements are ANDed.
+                      type: object
+                  type: object
+                  x-kubernetes-map-type: atomic
+                user:
+                  description: User resolves to a string to identify the client, assigned to the x509 Common Name field.
+                  properties:
+                    fromDefinition:
+                      description: |-
+                        FromDefinition is used to generate a dynamic value,
+                        it uses the dot notation to access fields from the referenced TenantControlPlane object:
+                        e.g.: metadata.name
+                      type: string
+                    stringValue:
+                      description: StringValue is a static string value.
+                      type: string
+                  type: object
+                  x-kubernetes-validations:
+                    - message: Either stringValue or fromDefinition must be set, but not both.
+                      rule: (has(self.stringValue) || has(self.fromDefinition)) && !(has(self.stringValue) && has(self.fromDefinition))
+              required:
+                - user
+              type: object
+            status:
+              description: KubeconfigGeneratorStatus defines the observed state of KubeconfigGenerator.
+              properties:
+                availableResources:
+                  default: 0
+                  description: |-
+                    AvailableResources is the sum of successfully generated resources.
+                    In case of a different value compared to Resources, check the field errors.
+                  type: integer
+                errors:
+                  description: Errors is the list of failed kubeconfig generations.
+                  items:
+                    properties:
+                      message:
+                        description: Message is the error message recorded upon the last generator run.
+                        type: string
+                      resource:
+                        description: Resource is the Namespaced name of the errored resource.
+                        type: string
+                    required:
+                      - message
+                      - resource
+                    type: object
+                  type: array
+                observedGeneration:
+                  description: ObservedGeneration represents the .metadata.generation that was last reconciled.
+                  format: int64
+                  type: integer
+                resources:
+                  default: 0
+                  description: Resources is the sum of targeted TenantControlPlane objects.
+                  type: integer
+              required:
+                - availableResources
+                - resources
+              type: object
+          type: object
+      served: true
+      storage: true
+      subresources:
+        status: {}

charts/kamaji/templates/_helpers.tpl

@@ -89,3 +89,15 @@ Create the name of the cert-manager Certificate
 {{- define "kamaji.certificateName" -}}
 {{- printf "%s-serving-cert" (include "kamaji.fullname" .) }}
 {{- end }}
+
+
+{{/*
+Kubeconfig Generator Deployment name.
+*/}}
+{{- define "kamaji.kubeconfigGeneratorName" -}}
+{{- if .Values.kubeconfigGenerator.fullnameOverride }}
+{{- .Values.fullnameOverride | trunc 63 | trimSuffix "-" }}
+{{- else }}
+{{- printf "%s-%s" .Release.Name "kubeconfig-generator" | trunc 63 | trimSuffix "-" }}
+{{- end }}
+{{- end }}

charts/kamaji/templates/kubeconfiggenerator-deployment.yaml

@@ -0,0 +1,54 @@
+{{- if .Values.kubeconfigGenerator.enabled }}
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  labels:
+    {{- include "kamaji.labels" . | nindent 4 }}
+  name: {{ include "kamaji.kubeconfigGeneratorName" . }}
+  namespace: {{ .Release.Namespace }}
+spec:
+  replicas: {{ .Values.kubeconfigGenerator.replicaCount }}
+  selector:
+    matchLabels:
+      {{- include "kamaji.selectorLabels" . | nindent 6 }}
+  template:
+    metadata:
+      {{- with .Values.kubeconfigGenerator.podAnnotations }}
+      annotations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      labels:
+        {{- include "kamaji.selectorLabels" . | nindent 8 }}
+    spec:
+      securityContext:
+        {{- toYaml .Values.kubeconfigGenerator.podSecurityContext | nindent 8 }}
+      serviceAccountName: {{ default .Values.kubeconfigGenerator.serviceAccountOverride (include "kamaji.serviceAccountName" .) }}
+      containers:
+        - args:
+          - kubeconfig-generator
+          - --health-probe-bind-address={{ .Values.kubeconfigGenerator.healthProbeBindAddress }}
+          - --leader-elect={{ .Values.kubeconfigGenerator.enableLeaderElect }}
+          {{- if .Values.kubeconfigGenerator.loggingDevel.enable }}- --zap-devel{{- end }}
+          {{- with .Values.kubeconfigGenerator.extraArgs }}
+          {{- toYaml . | nindent 10 }}
+          {{- end }}
+          image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          name: controller
+          resources:
+            {{- toYaml .Values.kubeconfigGenerator.resources | nindent 12 }}
+          securityContext:
+            {{- toYaml .Values.kubeconfigGenerator.securityContext | nindent 12 }}
+      {{- with .Values.kubeconfigGenerator.nodeSelector }}
+      nodeSelector:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.kubeconfigGenerator.affinity }}
+      affinity:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.kubeconfigGenerator.tolerations }}
+      tolerations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+{{- end }}

charts/kamaji/values.yaml

@@ -111,4 +111,48 @@ kamaji-etcd:
 # -- Disable the analytics traces collection
 telemetry:
   disabled: false
-  
+
+kubeconfigGenerator:
+  # -- Toggle to deploy the Kubeconfig Generator Deployment.
+  enabled: false
+  fullnameOverride: ""
+  # -- The number of the pod replicas for the Kubeconfig Generator controller.
+  replicaCount: 2
+  # -- The annotations to apply to the Kubeconfig Generator controller pods.
+  podAnnotations: {}
+  # -- The securityContext to apply to the Kubeconfig Generator controller pods.
+  podSecurityContext:
+    runAsNonRoot: true
+  # -- The name of the service account to use. If not set, the root Kamaji one will be used.
+  serviceAccountOverride: ""
+  # -- The address the probe endpoint binds to.
+  healthProbeBindAddress: ":8081"
+  # -- Enables the leader election.
+  enableLeaderElect: true
+  loggingDevel:
+    # -- Development Mode defaults(encoder=consoleEncoder,logLevel=Debug,stackTraceLevel=Warn). Production Mode defaults(encoder=jsonEncoder,logLevel=Info,stackTraceLevel=Error)
+    enable: false
+  # -- A list of extra arguments to add to the Kubeconfig Generator controller default ones.
+  extraArgs: []
+  resources:
+    limits:
+      cpu: 200m
+      memory: 512Mi
+    requests:
+      cpu: 200m
+      memory: 512Mi
+  # -- The securityContext to apply to the Kubeconfig Generator controller container only.
+  securityContext:
+    allowPrivilegeEscalation: false
+    # capabilities:
+    #   drop:
+    #   - ALL
+    # readOnlyRootFilesystem: true
+    # runAsNonRoot: true
+    # runAsUser: 1000
+  # -- Kubernetes node selector rules to schedule Kubeconfig Generator controller
+  nodeSelector: {}
+  # -- Kubernetes node taints that the Kubeconfig Generator controller pods would tolerate
+  tolerations: []
+  # -- Kubernetes affinity rules to apply to Kubeconfig Generator controller pods
+  affinity: {}

cmd/kubeconfig-generator/cmd.go

@@ -0,0 +1,167 @@
+// Copyright 2022 Clastix Labs
+// SPDX-License-Identifier: Apache-2.0
+
+package kubeconfiggenerator
+
+import (
+	"flag"
+	"fmt"
+	"io"
+	"os"
+	goRuntime "runtime"
+	"time"
+
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/client-go/rest"
+	"k8s.io/klog/v2"
+	ctrl "sigs.k8s.io/controller-runtime"
+	"sigs.k8s.io/controller-runtime/pkg/cache"
+	"sigs.k8s.io/controller-runtime/pkg/event"
+	"sigs.k8s.io/controller-runtime/pkg/healthz"
+	"sigs.k8s.io/controller-runtime/pkg/log/zap"
+	metricsserver "sigs.k8s.io/controller-runtime/pkg/metrics/server"
+
+	"github.com/clastix/kamaji/controllers"
+	"github.com/clastix/kamaji/internal"
+)
+
+func NewCmd(scheme *runtime.Scheme) *cobra.Command {
+	// CLI flags
+	var (
+		metricsBindAddress            string
+		healthProbeBindAddress        string
+		leaderElect                   bool
+		controllerReconcileTimeout    time.Duration
+		cacheResyncPeriod             time.Duration
+		managerNamespace              string
+		certificateExpirationDeadline time.Duration
+	)
+
+	cmd := &cobra.Command{
+		Use:           "kubeconfig-generator",
+		Short:         "Start the Kubeconfig Generator manager",
+		SilenceErrors: false,
+		SilenceUsage:  true,
+		PreRunE: func(*cobra.Command, []string) error {
+			// Avoid polluting stdout with useless details by the underlying klog implementations
+			klog.SetOutput(io.Discard)
+			klog.LogToStderr(false)
+
+			if certificateExpirationDeadline < 24*time.Hour {
+				return fmt.Errorf("certificate expiration deadline must be at least 24 hours")
+			}
+
+			return nil
+		},
+		RunE: func(*cobra.Command, []string) error {
+			ctx := ctrl.SetupSignalHandler()
+
+			setupLog := ctrl.Log.WithName("kubeconfig-generator")
+
+			setupLog.Info(fmt.Sprintf("Kamaji version %s %s%s", internal.GitTag, internal.GitCommit, internal.GitDirty))
+			setupLog.Info(fmt.Sprintf("Build from: %s", internal.GitRepo))
+			setupLog.Info(fmt.Sprintf("Build date: %s", internal.BuildTime))
+			setupLog.Info(fmt.Sprintf("Go Version: %s", goRuntime.Version()))
+			setupLog.Info(fmt.Sprintf("Go OS/Arch: %s/%s", goRuntime.GOOS, goRuntime.GOARCH))
+
+			ctrlOpts := ctrl.Options{
+				Scheme: scheme,
+				Metrics: metricsserver.Options{
+					BindAddress: metricsBindAddress,
+				},
+				HealthProbeBindAddress:  healthProbeBindAddress,
+				LeaderElection:          leaderElect,
+				LeaderElectionNamespace: managerNamespace,
+				LeaderElectionID:        "kubeconfiggenerator.kamaji.clastix.io",
+				NewCache: func(config *rest.Config, opts cache.Options) (cache.Cache, error) {
+					opts.SyncPeriod = &cacheResyncPeriod
+
+					return cache.New(config, opts)
+				},
+			}
+
+			triggerChan := make(chan event.GenericEvent)
+
+			mgr, err := ctrl.NewManager(ctrl.GetConfigOrDie(), ctrlOpts)
+			if err != nil {
+				setupLog.Error(err, "unable to start manager")
+
+				return err
+			}
+
+			setupLog.Info("setting probes")
+			{
+				if err = mgr.AddHealthzCheck("healthz", healthz.Ping); err != nil {
+					setupLog.Error(err, "unable to set up health check")
+
+					return err
+				}
+				if err = mgr.AddReadyzCheck("readyz", healthz.Ping); err != nil {
+					setupLog.Error(err, "unable to set up ready check")
+
+					return err
+				}
+			}
+
+			certController := &controllers.CertificateLifecycle{Channel: triggerChan, Deadline: certificateExpirationDeadline}
+			certController.EnqueueFn = certController.EnqueueForKubeconfigGenerator
+			if err = certController.SetupWithManager(mgr); err != nil {
+				setupLog.Error(err, "unable to create controller", "controller", "CertificateLifecycle")
+
+				return err
+			}
+
+			if err = (&controllers.KubeconfigGeneratorWatcher{
+				Client:        mgr.GetClient(),
+				GeneratorChan: triggerChan,
+			}).SetupWithManager(mgr); err != nil {
+				setupLog.Error(err, "unable to create controller", "controller", "KubeconfigGeneratorWatcher")
+
+				return err
+			}
+
+			if err = (&controllers.KubeconfigGeneratorReconciler{
+				Client:            mgr.GetClient(),
+				NotValidThreshold: certificateExpirationDeadline,
+				CertificateChan:   triggerChan,
+			}).SetupWithManager(mgr); err != nil {
+				setupLog.Error(err, "unable to create controller", "controller", "KubeconfigGenerator")
+
+				return err
+			}
+
+			setupLog.Info("starting manager")
+			if err = mgr.Start(ctx); err != nil {
+				setupLog.Error(err, "problem running manager")
+
+				return err
+			}
+
+			return nil
+		},
+	}
+	// Setting zap logger
+	zapfs := flag.NewFlagSet("zap", flag.ExitOnError)
+	opts := zap.Options{
+		Development: true,
+	}
+	opts.BindFlags(zapfs)
+	cmd.Flags().AddGoFlagSet(zapfs)
+	ctrl.SetLogger(zap.New(zap.UseFlagOptions(&opts)))
+	// Setting CLI flags
+	cmd.Flags().StringVar(&metricsBindAddress, "metrics-bind-address", ":8090", "The address the metric endpoint binds to.")
+	cmd.Flags().StringVar(&healthProbeBindAddress, "health-probe-bind-address", ":8091", "The address the probe endpoint binds to.")
+	cmd.Flags().BoolVar(&leaderElect, "leader-elect", true, "Enable leader election for controller manager. Enabling this will ensure there is only one active controller manager.")
+	cmd.Flags().DurationVar(&controllerReconcileTimeout, "controller-reconcile-timeout", 30*time.Second, "The reconciliation request timeout before the controller withdraw the external resource calls, such as dealing with the Datastore, or the Tenant Control Plane API endpoint.")
+	cmd.Flags().DurationVar(&cacheResyncPeriod, "cache-resync-period", 10*time.Hour, "The controller-runtime.Manager cache resync period.")
+	cmd.Flags().StringVar(&managerNamespace, "pod-namespace", os.Getenv("POD_NAMESPACE"), "The Kubernetes Namespace on which the Operator is running in, required for the TenantControlPlane migration jobs.")
+	cmd.Flags().DurationVar(&certificateExpirationDeadline, "certificate-expiration-deadline", 24*time.Hour, "Define the deadline upon certificate expiration to start the renewal process, cannot be less than a 24 hours.")
+
+	cobra.OnInitialize(func() {
+		viper.AutomaticEnv()
+	})
+
+	return cmd
+}

cmd/manager/cmd.go

@@ -4,6 +4,7 @@
 package manager
 
 import (
+	"context"
 	"flag"
 	"fmt"
 	"io"
@@ -16,6 +17,7 @@ import (
 	"github.com/spf13/cobra"
 	"github.com/spf13/viper"
 	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/client-go/discovery"
 	"k8s.io/client-go/rest"
 	"k8s.io/klog/v2"
 	ctrl "sigs.k8s.io/controller-runtime"
@@ -33,6 +35,7 @@ import (
 	"github.com/clastix/kamaji/internal"
 	"github.com/clastix/kamaji/internal/builders/controlplane"
 	datastoreutils "github.com/clastix/kamaji/internal/datastore/utils"
+	"github.com/clastix/kamaji/internal/utilities"
 	"github.com/clastix/kamaji/internal/webhook"
 	"github.com/clastix/kamaji/internal/webhook/handlers"
 	"github.com/clastix/kamaji/internal/webhook/routes"
@@ -62,8 +65,6 @@ func NewCmd(scheme *runtime.Scheme) *cobra.Command {
 		webhookCAPath string
 	)
 
-	ctx := ctrl.SetupSignalHandler()
-
 	cmd := &cobra.Command{
 		Use:           "manager",
 		Short:         "Start the Kamaji Kubernetes Operator",
@@ -86,7 +87,7 @@ func NewCmd(scheme *runtime.Scheme) *cobra.Command {
 				return fmt.Errorf("unable to read webhook CA: %w", err)
 			}
 
-			if err = datastoreutils.CheckExists(ctx, scheme, datastore); err != nil {
+			if err = datastoreutils.CheckExists(context.Background(), scheme, datastore); err != nil {
 				return err
 			}
 
@@ -97,6 +98,8 @@ func NewCmd(scheme *runtime.Scheme) *cobra.Command {
 			return nil
 		},
 		RunE: func(*cobra.Command, []string) error {
+			ctx := ctrl.SetupSignalHandler()
+
 			setupLog := ctrl.Log.WithName("setup")
 
 			setupLog.Info(fmt.Sprintf("Kamaji version %s %s%s", internal.GitTag, internal.GitCommit, internal.GitDirty))
@@ -145,15 +148,23 @@ func NewCmd(scheme *runtime.Scheme) *cobra.Command {
 				return err
 			}
 
+			discoveryClient, err := discovery.NewDiscoveryClientForConfig(mgr.GetConfig())
+			if err != nil {
+				setupLog.Error(err, "unable to create discovery client")
+
+				return err
+			}
+
 			reconciler := &controllers.TenantControlPlaneReconciler{
 				Client:    mgr.GetClient(),
 				APIReader: mgr.GetAPIReader(),
 				Config: controllers.TenantControlPlaneReconcilerConfig{
-					ReconcileTimeout:     controllerReconcileTimeout,
-					DefaultDataStoreName: datastore,
-					KineContainerImage:   kineImage,
-					TmpBaseDirectory:     tmpDirectory,
+					DefaultDataStoreName:    datastore,
+					KineContainerImage:      kineImage,
+					TmpBaseDirectory:        tmpDirectory,
+					CertExpirationThreshold: certificateExpirationDeadline,
 				},
+				ReconcileTimeout:        controllerReconcileTimeout,
 				CertificateChan:         certChannel,
 				TriggerChan:             tcpChannel,
 				KamajiNamespace:         managerNamespace,
@@ -161,9 +172,10 @@ func NewCmd(scheme *runtime.Scheme) *cobra.Command {
 				KamajiService:           managerServiceName,
 				KamajiMigrateImage:      migrateJobImage,
 				MaxConcurrentReconciles: maxConcurrentReconciles,
+				DiscoveryClient:         discoveryClient,
 			}
 
-			if err = reconciler.SetupWithManager(mgr); err != nil {
+			if err = reconciler.SetupWithManager(ctx, mgr); err != nil {
 				setupLog.Error(err, "unable to create controller", "controller", "Namespace")
 
 				return err
@@ -192,7 +204,10 @@ func NewCmd(scheme *runtime.Scheme) *cobra.Command {
 				}
 			}
 
-			if err = (&controllers.CertificateLifecycle{Channel: certChannel, Deadline: certificateExpirationDeadline}).SetupWithManager(mgr); err != nil {
+			certController := &controllers.CertificateLifecycle{Channel: certChannel, Deadline: certificateExpirationDeadline}
+			certController.EnqueueFn = certController.EnqueueForTenantControlPlane
+
+			if err = certController.SetupWithManager(mgr); err != nil {
 				setupLog.Error(err, "unable to create controller", "controller", "CertificateLifecycle")
 
 				return err
@@ -210,10 +225,22 @@ func NewCmd(scheme *runtime.Scheme) *cobra.Command {
 				return err
 			}
 
+			// Only requires to look for the core api group.
+			if utilities.AreGatewayResourcesAvailable(ctx, mgr.GetClient(), discoveryClient) {
+				if err = (&kamajiv1alpha1.GatewayListener{}).SetupWithManager(ctx, mgr); err != nil {
+					setupLog.Error(err, "unable to create indexer", "indexer", "GatewayListener")
+
+					return err
+				}
+			}
+
 			err = webhook.Register(mgr, map[routes.Route][]handlers.Handler{
 				routes.TenantControlPlaneMigrate{}: {
 					handlers.Freeze{},
 				},
+				routes.TenantControlPlaneWritePermission{}: {
+					handlers.WritePermission{},
+				},
 				routes.TenantControlPlaneDefaults{}: {
 					handlers.TenantControlPlaneDefaults{
 						DefaultDatastore: datastore,
@@ -236,6 +263,10 @@ func NewCmd(scheme *runtime.Scheme) *cobra.Command {
 					},
 					handlers.TenantControlPlaneServiceCIDR{},
 					handlers.TenantControlPlaneLoadBalancerSourceRanges{},
+					handlers.TenantControlPlaneGatewayValidation{
+						Client:          mgr.GetClient(),
+						DiscoveryClient: discoveryClient,
+					},
 				},
 				routes.TenantControlPlaneTelemetry{}: {
 					handlers.TenantControlPlaneTelemetry{

cmd/root.go

@@ -10,6 +10,8 @@ import (
 	utilruntime "k8s.io/apimachinery/pkg/util/runtime"
 	clientgoscheme "k8s.io/client-go/kubernetes/scheme"
 	appsv1 "k8s.io/kubernetes/pkg/apis/apps/v1"
+	gatewayv1 "sigs.k8s.io/gateway-api/apis/v1"
+	gatewayv1alpha2 "sigs.k8s.io/gateway-api/apis/v1alpha2"
 
 	kamajiv1alpha1 "github.com/clastix/kamaji/api/v1alpha1"
 )
@@ -22,6 +24,10 @@ func NewCmd(scheme *runtime.Scheme) *cobra.Command {
 			utilruntime.Must(clientgoscheme.AddToScheme(scheme))
 			utilruntime.Must(kamajiv1alpha1.AddToScheme(scheme))
 			utilruntime.Must(appsv1.RegisterDefaults(scheme))
+			// NOTE: This will succeed even if Gateway API is not installed in the cluster.
+			// Only registers the go types.
+			utilruntime.Must(gatewayv1.Install(scheme))
+			utilruntime.Must(gatewayv1alpha2.Install(scheme))
 		},
 	}
 }

cmd/utils/k8s_version.go

@@ -4,7 +4,8 @@
 package utils
 
 import (
-	"github.com/pkg/errors"
+	"fmt"
+
 	"k8s.io/client-go/kubernetes"
 	"k8s.io/client-go/rest"
 )
@@ -12,12 +13,12 @@ import (
 func KubernetesVersion(config *rest.Config) (string, error) {
 	cs, csErr := kubernetes.NewForConfig(config)
 	if csErr != nil {
-		return "", errors.Wrap(csErr, "cannot create kubernetes clientset")
+		return "", fmt.Errorf("cannot create kubernetes clientset: %w", csErr)
 	}
 
 	sv, svErr := cs.ServerVersion()
 	if svErr != nil {
-		return "", errors.Wrap(svErr, "cannot get Kubernetes version")
+		return "", fmt.Errorf("cannot get Kubernetes version: %w", svErr)
 	}
 
 	return sv.GitVersion, nil

config/samples/kamaji_v1alpha1_kubeconfiggenerator.yaml

@@ -0,0 +1,21 @@
+apiVersion: kamaji.clastix.io/v1alpha1
+kind: KubeconfigGenerator
+metadata:
+  name: tenant
+spec:
+  controlPlaneEndpointFrom: admin.conf
+  groups:
+    - stringValue: custom.group.tld
+    - fromDefinition: metadata.namespace
+  namespaceSelector:
+    matchExpressions:
+      - key: kubernetes.io/metadata.name
+        operator: Exists
+        values: []
+  tenantControlPlaneSelector:
+    matchExpressions:
+      - key: tenant.clastix.io
+        operator: Exists
+        values: []
+  user:
+    fromDefinition: metadata.name

config/samples/kamaji_v1alpha1_tenantcontrolplane.yaml

@@ -13,7 +13,15 @@ spec:
   kubernetes:
     version: "v1.33.0"
     kubelet:
-      cgroupfs: systemd
+      configurationJSONPatches:
+        - op: add
+          path: /featureGates
+          value:
+            KubeletCrashLoopBackOffMax: false
+            KubeletEnsureSecretPulledImages: false
+        - op: replace
+          path: /cgroupDriver
+          value: systemd
   networkProfile:
     port: 6443
   addons:

config/samples/kamaji_v1alpha1_tenantcontrolplane_gateway.yaml

@@ -0,0 +1,81 @@
+# Copyright 2022 Clastix Labs
+# SPDX-License-Identifier: Apache-2.0
+
+# This example demonstrates how to configure Gateway API support for a Tenant Control Plane.
+# 
+# Prerequisites:
+# 1. Gateway API CRDs must be installed (GatewayClass, Gateway, TLSRoute)
+# 2. A Gateway resource must exist with listeners for ports 6443 and 8132
+# 3. DNS(or worker nodes hosts entries) must be configured to resolve the hostname to the Gateway's external address
+#
+# Example GatewayClass and Gateway configuration:
+#
+# apiVersion: gateway.networking.k8s.io/v1
+# kind: GatewayClass
+# metadata:
+#   name: envoy-gw-class
+# spec:
+#   controllerName: gateway.envoyproxy.io/gatewayclass-controller
+# ---
+# apiVersion: gateway.networking.k8s.io/v1
+# kind: Gateway
+# metadata:
+#   name: gateway
+#   namespace: default
+# spec:
+#   gatewayClassName: envoy-gw-class
+#   listeners:
+#   - allowedRoutes:
+#       kinds:
+#       - group: gateway.networking.k8s.io
+#         kind: TLSRoute
+#       namespaces:
+#         from: All
+#     hostname: '*.cluster.dev'
+#     name: kube-apiserver
+#     port: 6443
+#     protocol: TLS
+#     tls:
+#       mode: Passthrough
+#   - allowedRoutes:
+#       kinds:
+#       - group: gateway.networking.k8s.io
+#         kind: TLSRoute
+#       namespaces:
+#         from: All
+#     hostname: '*.cluster.dev'
+#     name: konnectivity-server
+#     port: 8132
+#     protocol: TLS
+#     tls:
+#       mode: Passthrough
+
+apiVersion: kamaji.clastix.io/v1alpha1
+kind: TenantControlPlane
+metadata:
+  name: demo-tcp-1
+spec:
+  addons:
+    coreDNS: {}
+    kubeProxy: {}
+    konnectivity: {}
+  dataStore: default
+  controlPlane:
+    gateway:
+      hostname: "c11.cluster.dev"  # worker nodes or kubectl clients must be able to resolve this hostname to the Gateway's external address.
+      parentRefs:
+      - name: gateway
+        namespace: default
+    deployment:
+      replicas: 1
+    service:
+      serviceType: ClusterIP
+  kubernetes:
+    version: v1.32.0
+    kubelet:
+      cgroupfs: systemd
+  networkProfile:
+    port: 6443
+    certSANs:
+    - "c11.cluster.dev"
+

config/samples/kamaji_v1alpha1_tenantcontrolplane_konnectivity_hostnetwork.yaml

@@ -0,0 +1,36 @@
+apiVersion: kamaji.clastix.io/v1alpha1
+kind: TenantControlPlane
+metadata:
+  name: example-hostnetwork-tcp
+  namespace: tenant-system
+spec:
+  controlPlane:
+    deployment:
+      replicas: 2
+    service:
+      serviceType: LoadBalancer
+  kubernetes:
+    version: v1.29.0
+    kubelet:
+      cgroupfs: systemd
+      preferredAddressTypes: ["InternalIP", "ExternalIP"]
+  networkProfile:
+    address: "10.0.0.100"
+    port: 6443
+    serviceCidr: "10.96.0.0/16"
+    podCidr: "10.244.0.0/16"
+  addons:
+    coreDNS: {}
+    konnectivity:
+      server:
+        port: 8132
+      agent:
+        hostNetwork: true
+        tolerations:
+          - key: "CriticalAddonsOnly"
+            operator: "Exists"
+          - key: "node.kubernetes.io/not-ready"
+            operator: "Exists"
+            effect: "NoExecute"
+            tolerationSeconds: 300
+    kubeProxy: {}

controllers/certificate_lifecycle_controller.go

@@ -9,7 +9,6 @@ import (
 	"fmt"
 	"time"
 
-	"github.com/pkg/errors"
 	corev1 "k8s.io/api/core/v1"
 	k8serrors "k8s.io/apimachinery/pkg/api/errors"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
@@ -31,8 +30,9 @@ import (
 )
 
 type CertificateLifecycle struct {
-	Channel  chan event.GenericEvent
-	Deadline time.Duration
+	Channel   chan event.GenericEvent
+	Deadline  time.Duration
+	EnqueueFn func(secret *corev1.Secret)
 
 	client client.Client
 }
@@ -91,12 +91,7 @@ func (s *CertificateLifecycle) Reconcile(ctx context.Context, request reconcile.
 	if deadline.After(crt.NotAfter) {
 		logger.Info("certificate near expiration, must be rotated")
 
-		s.Channel <- event.GenericEvent{Object: &kamajiv1alpha1.TenantControlPlane{
-			ObjectMeta: metav1.ObjectMeta{
-				Name:      secret.GetOwnerReferences()[0].Name,
-				Namespace: secret.Namespace,
-			},
-		}}
+		s.EnqueueFn(&secret)
 
 		logger.Info("certificate rotation triggered")
 
@@ -110,6 +105,35 @@ func (s *CertificateLifecycle) Reconcile(ctx context.Context, request reconcile.
 	return reconcile.Result{RequeueAfter: after}, nil
 }
 
+func (s *CertificateLifecycle) EnqueueForTenantControlPlane(secret *corev1.Secret) {
+	for _, or := range secret.GetOwnerReferences() {
+		if or.Kind != "TenantControlPlane" {
+			continue
+		}
+
+		s.Channel <- event.GenericEvent{Object: &kamajiv1alpha1.TenantControlPlane{
+			ObjectMeta: metav1.ObjectMeta{
+				Name:      or.Name,
+				Namespace: secret.Namespace,
+			},
+		}}
+	}
+}
+
+func (s *CertificateLifecycle) EnqueueForKubeconfigGenerator(secret *corev1.Secret) {
+	for _, or := range secret.GetOwnerReferences() {
+		if or.Kind != "KubeconfigGenerator" {
+			continue
+		}
+
+		s.Channel <- event.GenericEvent{Object: &kamajiv1alpha1.TenantControlPlane{
+			ObjectMeta: metav1.ObjectMeta{
+				Name: or.Name,
+			},
+		}}
+	}
+}
+
 func (s *CertificateLifecycle) extractCertificateFromBareSecret(secret corev1.Secret) (*x509.Certificate, error) {
 	var crt *x509.Certificate
 	var err error
@@ -143,7 +167,7 @@ func (s *CertificateLifecycle) extractCertificateFromKubeconfig(secret corev1.Se
 
 	crt, err := crypto.ParseCertificateBytes(kc.AuthInfos[0].AuthInfo.ClientCertificateData)
 	if err != nil {
-		return nil, errors.Wrap(err, "cannot parse kubeconfig certificate bytes")
+		return nil, fmt.Errorf("cannot parse kubeconfig certificate bytes: %w", err)
 	}
 
 	return crt, nil

controllers/datastore_controller.go

@@ -5,8 +5,8 @@ package controllers
 
 import (
 	"context"
+	"fmt"
 
-	"github.com/pkg/errors"
 	k8serrors "k8s.io/apimachinery/pkg/api/errors"
 	"k8s.io/apimachinery/pkg/fields"
 	k8stypes "k8s.io/apimachinery/pkg/types"
@@ -65,7 +65,7 @@ func (r *DataStore) Reconcile(ctx context.Context, request reconcile.Request) (r
 		if lErr := r.Client.List(ctx, &tcpList, client.MatchingFieldsSelector{
 			Selector: fields.OneTermEqualSelector(kamajiv1alpha1.TenantControlPlaneUsedDataStoreKey, ds.GetName()),
 		}); lErr != nil {
-			return errors.Wrap(lErr, "cannot retrieve list of the Tenant Control Plane using the following instance")
+			return fmt.Errorf("cannot retrieve list of the Tenant Control Plane using the following instance: %w", lErr)
 		}
 		// Updating the status with the list of Tenant Control Plane using the following Data Source
 		tcpSets := sets.NewString()
@@ -73,10 +73,11 @@ func (r *DataStore) Reconcile(ctx context.Context, request reconcile.Request) (r
 			tcpSets.Insert(getNamespacedName(tcp.GetNamespace(), tcp.GetName()).String())
 		}
 
+		ds.Status.ObservedGeneration = ds.Generation
 		ds.Status.UsedBy = tcpSets.List()
 
 		if sErr := r.Client.Status().Update(ctx, &ds); sErr != nil {
-			return errors.Wrap(sErr, "cannot update the status for the given instance")
+			return fmt.Errorf("cannot update the status for the given instance: %w", sErr)
 		}
 
 		return nil

controllers/kubeconfiggenerator_controller.go

@@ -0,0 +1,444 @@
+// Copyright 2022 Clastix Labs
+// SPDX-License-Identifier: Apache-2.0
+
+package controllers
+
+import (
+	"bytes"
+	"context"
+	"crypto/x509"
+	"fmt"
+	"sort"
+	"strings"
+	"time"
+
+	corev1 "k8s.io/api/core/v1"
+	apierrors "k8s.io/apimachinery/pkg/api/errors"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apimachinery/pkg/types"
+	"k8s.io/apimachinery/pkg/util/sets"
+	clientcmdapiv1 "k8s.io/client-go/tools/clientcmd/api/v1"
+	certutil "k8s.io/client-go/util/cert"
+	"k8s.io/client-go/util/keyutil"
+	"k8s.io/client-go/util/workqueue"
+	kubeadmconstants "k8s.io/kubernetes/cmd/kubeadm/app/constants"
+	"k8s.io/kubernetes/cmd/kubeadm/app/util"
+	"k8s.io/kubernetes/cmd/kubeadm/app/util/pkiutil"
+	ctrl "sigs.k8s.io/controller-runtime"
+	"sigs.k8s.io/controller-runtime/pkg/client"
+	"sigs.k8s.io/controller-runtime/pkg/controller/controllerutil"
+	"sigs.k8s.io/controller-runtime/pkg/event"
+	"sigs.k8s.io/controller-runtime/pkg/handler"
+	"sigs.k8s.io/controller-runtime/pkg/log"
+	"sigs.k8s.io/controller-runtime/pkg/manager"
+	"sigs.k8s.io/controller-runtime/pkg/reconcile"
+	"sigs.k8s.io/controller-runtime/pkg/source"
+
+	kamajiv1alpha1 "github.com/clastix/kamaji/api/v1alpha1"
+	"github.com/clastix/kamaji/controllers/utils"
+	"github.com/clastix/kamaji/internal/constants"
+	"github.com/clastix/kamaji/internal/crypto"
+	"github.com/clastix/kamaji/internal/resources"
+	"github.com/clastix/kamaji/internal/utilities"
+)
+
+type KubeconfigGeneratorReconciler struct {
+	Client            client.Client
+	NotValidThreshold time.Duration
+	CertificateChan   chan event.GenericEvent
+}
+
+//+kubebuilder:rbac:groups="",resources=namespaces,verbs=get;list;watch
+//+kubebuilder:rbac:groups=kamaji.clastix.io,resources=kubeconfiggenerators,verbs=get;list;watch;create;update;patch
+//+kubebuilder:rbac:groups=kamaji.clastix.io,resources=kubeconfiggenerators/status,verbs=get;update;patch
+//+kubebuilder:rbac:groups=kamaji.clastix.io,resources=kubeconfiggenerators/finalizers,verbs=update
+
+func (r *KubeconfigGeneratorReconciler) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) {
+	logger := log.FromContext(ctx)
+
+	logger.Info("reconciling resource")
+
+	var generator kamajiv1alpha1.KubeconfigGenerator
+	if err := r.Client.Get(ctx, req.NamespacedName, &generator); err != nil {
+		if apierrors.IsNotFound(err) {
+			logger.Info("resource may have been deleted, skipping")
+
+			return ctrl.Result{}, nil
+		}
+
+		logger.Error(err, "cannot retrieve the required resource")
+
+		return ctrl.Result{}, err
+	}
+
+	if utils.IsPaused(&generator) {
+		logger.Info("paused reconciliation, no further actions")
+
+		return ctrl.Result{}, nil
+	}
+
+	status, err := r.handle(ctx, &generator)
+	if err != nil {
+		logger.Error(err, "cannot handle the request")
+
+		return ctrl.Result{}, err
+	}
+
+	generator.Status = status
+	generator.Status.ObservedGeneration = generator.Generation
+
+	if statusErr := r.Client.Status().Update(ctx, &generator); statusErr != nil {
+		logger.Error(statusErr, "cannot update resource status")
+
+		return ctrl.Result{}, statusErr
+	}
+
+	logger.Info("reconciling completed")
+
+	return ctrl.Result{}, nil
+}
+
+func (r *KubeconfigGeneratorReconciler) handle(ctx context.Context, generator *kamajiv1alpha1.KubeconfigGenerator) (kamajiv1alpha1.KubeconfigGeneratorStatus, error) {
+	nsSelector, nsErr := metav1.LabelSelectorAsSelector(&generator.Spec.NamespaceSelector)
+	if nsErr != nil {
+		return kamajiv1alpha1.KubeconfigGeneratorStatus{}, fmt.Errorf("NamespaceSelector contains an error: %w", nsErr)
+	}
+
+	var namespaceList corev1.NamespaceList
+	if err := r.Client.List(ctx, &namespaceList, &client.ListOptions{LabelSelector: nsSelector}); err != nil {
+		return kamajiv1alpha1.KubeconfigGeneratorStatus{}, fmt.Errorf("cannot filter Namespace objects using provided selector: %w", err)
+	}
+
+	var targets []kamajiv1alpha1.TenantControlPlane
+
+	for _, ns := range namespaceList.Items {
+		tcpSelector, tcpErr := metav1.LabelSelectorAsSelector(&generator.Spec.TenantControlPlaneSelector)
+		if tcpErr != nil {
+			return kamajiv1alpha1.KubeconfigGeneratorStatus{}, fmt.Errorf("TenantControlPlaneSelector contains an error: %w", tcpErr)
+		}
+
+		var tcpList kamajiv1alpha1.TenantControlPlaneList
+		if err := r.Client.List(ctx, &tcpList, &client.ListOptions{Namespace: ns.GetName(), LabelSelector: tcpSelector}); err != nil {
+			return kamajiv1alpha1.KubeconfigGeneratorStatus{}, fmt.Errorf("cannot filter TenantControlPlane objects using provided selector: %w", err)
+		}
+
+		targets = append(targets, tcpList.Items...)
+	}
+
+	sort.Slice(targets, func(i, j int) bool {
+		return client.ObjectKeyFromObject(&targets[i]).String() < client.ObjectKeyFromObject(&targets[j]).String()
+	})
+
+	status := kamajiv1alpha1.KubeconfigGeneratorStatus{
+		Resources:          len(targets),
+		AvailableResources: len(targets),
+	}
+
+	for _, tcp := range targets {
+		if err := r.process(ctx, generator, tcp); err != nil {
+			status.Errors = append(status.Errors, *err)
+			status.AvailableResources--
+		}
+	}
+
+	return status, nil
+}
+
+func (r *KubeconfigGeneratorReconciler) process(ctx context.Context, generator *kamajiv1alpha1.KubeconfigGenerator, tcp kamajiv1alpha1.TenantControlPlane) *kamajiv1alpha1.KubeconfigGeneratorStatusError {
+	statusErr := kamajiv1alpha1.KubeconfigGeneratorStatusError{
+		Resource: client.ObjectKeyFromObject(&tcp).String(),
+	}
+
+	var adminSecret corev1.Secret
+
+	if tcp.Status.KubeConfig.Admin.SecretName == "" {
+		statusErr.Message = "the admin kubeconfig is not yet generated"
+
+		return &statusErr
+	}
+
+	if err := r.Client.Get(ctx, types.NamespacedName{Name: tcp.Status.KubeConfig.Admin.SecretName, Namespace: tcp.GetNamespace()}, &adminSecret); err != nil {
+		statusErr.Message = fmt.Sprintf("an error occurred retrieving the admin Kubeconfig: %s", err.Error())
+
+		return &statusErr
+	}
+
+	kubeconfigTmpl, kcErr := utilities.DecodeKubeconfig(adminSecret, generator.Spec.ControlPlaneEndpointFrom)
+	if kcErr != nil {
+		statusErr.Message = fmt.Sprintf("unable to decode Kubeconfig template: %s", kcErr.Error())
+
+		return &statusErr
+	}
+
+	uMap, uErr := runtime.DefaultUnstructuredConverter.ToUnstructured(&tcp)
+	if uErr != nil {
+		statusErr.Message = fmt.Sprintf("cannot convert the resource to a map: %s", uErr)
+
+		return &statusErr
+	}
+
+	var user string
+	groups := sets.New[string]()
+
+	for _, group := range generator.Spec.Groups {
+		switch {
+		case group.StringValue != "":
+			groups.Insert(group.StringValue)
+		case group.FromDefinition != "":
+			v, ok, vErr := unstructured.NestedString(uMap, strings.Split(group.FromDefinition, ".")...)
+			switch {
+			case vErr != nil:
+				statusErr.Message = fmt.Sprintf("cannot run NestedString %q due to an error: %s", group.FromDefinition, vErr.Error())
+
+				return &statusErr
+			case !ok:
+				statusErr.Message = fmt.Sprintf("provided dot notation %q is not found", group.FromDefinition)
+
+				return &statusErr
+			default:
+				groups.Insert(v)
+			}
+		default:
+			statusErr.Message = "at least a StringValue or FromDefinition Group value must be provided"
+
+			return &statusErr
+		}
+	}
+
+	switch {
+	case generator.Spec.User.StringValue != "":
+		user = generator.Spec.User.StringValue
+	case generator.Spec.User.FromDefinition != "":
+		v, ok, vErr := unstructured.NestedString(uMap, strings.Split(generator.Spec.User.FromDefinition, ".")...)
+
+		switch {
+		case vErr != nil:
+			statusErr.Message = fmt.Sprintf("cannot run NestedString %q due to an error: %s", generator.Spec.User.FromDefinition, vErr.Error())
+
+			return &statusErr
+		case !ok:
+			statusErr.Message = fmt.Sprintf("provided dot notation %q is not found", generator.Spec.User.FromDefinition)
+
+			return &statusErr
+		default:
+			user = v
+		}
+	default:
+		statusErr.Message = "at least a StringValue or FromDefinition for the user field must be provided"
+
+		return &statusErr
+	}
+
+	var resultSecret corev1.Secret
+	resultSecret.SetName(tcp.Name + "-" + generator.Name)
+	resultSecret.SetNamespace(tcp.Namespace)
+
+	objectKey := client.ObjectKeyFromObject(&resultSecret)
+
+	if err := r.Client.Get(ctx, objectKey, &resultSecret); err != nil {
+		if !apierrors.IsNotFound(err) {
+			statusErr.Message = fmt.Sprintf("the secret %q cannot be generated", objectKey.String())
+
+			return &statusErr
+		}
+
+		if generateErr := r.generate(ctx, generator, &resultSecret, kubeconfigTmpl, &tcp, groups, user); generateErr != nil {
+			statusErr.Message = fmt.Sprintf("an error occurred generating the %q Secret: %s", objectKey.String(), generateErr.Error())
+
+			return &statusErr
+		}
+
+		return nil
+	}
+
+	isValid, validateErr := r.isValid(&resultSecret, kubeconfigTmpl, groups, user)
+	switch {
+	case !isValid:
+		if generateErr := r.generate(ctx, generator, &resultSecret, kubeconfigTmpl, &tcp, groups, user); generateErr != nil {
+			statusErr.Message = fmt.Sprintf("an error occurred regenerating the %q Secret: %s", objectKey.String(), generateErr.Error())
+
+			return &statusErr
+		}
+
+		return nil
+	case validateErr != nil:
+		statusErr.Message = fmt.Sprintf("an error occurred checking validation for %q Secret: %s", objectKey.String(), validateErr.Error())
+
+		return &statusErr
+	default:
+		return nil
+	}
+}
+
+func (r *KubeconfigGeneratorReconciler) generate(ctx context.Context, generator *kamajiv1alpha1.KubeconfigGenerator, secret *corev1.Secret, tmpl *clientcmdapiv1.Config, tcp *kamajiv1alpha1.TenantControlPlane, groups sets.Set[string], user string) error {
+	_, config, err := resources.GetKubeadmManifestDeps(ctx, r.Client, tcp)
+	if err != nil {
+		return err
+	}
+
+	clientCertConfig := pkiutil.CertConfig{
+		Config: certutil.Config{
+			CommonName:   user,
+			Organization: groups.UnsortedList(),
+			Usages:       []x509.ExtKeyUsage{x509.ExtKeyUsageClientAuth},
+		},
+		NotAfter:            util.StartTimeUTC().Add(kubeadmconstants.CertificateValidityPeriod),
+		EncryptionAlgorithm: config.InitConfiguration.ClusterConfiguration.EncryptionAlgorithmType(),
+	}
+
+	var caSecret corev1.Secret
+	if caErr := r.Client.Get(ctx, types.NamespacedName{Namespace: tcp.Namespace, Name: tcp.Status.Certificates.CA.SecretName}, &caSecret); caErr != nil {
+		return fmt.Errorf("cannot retrieve Certificate Authority: %w", caErr)
+	}
+
+	caCert, crtErr := crypto.ParseCertificateBytes(caSecret.Data[kubeadmconstants.CACertName])
+	if crtErr != nil {
+		return fmt.Errorf("cannot parse Certificate Authority certificate: %w", crtErr)
+	}
+
+	caKey, keyErr := crypto.ParsePrivateKeyBytes(caSecret.Data[kubeadmconstants.CAKeyName])
+	if keyErr != nil {
+		return fmt.Errorf("cannot parse Certificate Authority key: %w", keyErr)
+	}
+
+	clientCert, clientKey, err := pkiutil.NewCertAndKey(caCert, caKey, &clientCertConfig)
+
+	contextUserName := generator.Name
+
+	for name := range tmpl.AuthInfos {
+		tmpl.AuthInfos[name].Name = contextUserName
+		tmpl.AuthInfos[name].AuthInfo.ClientCertificateData = pkiutil.EncodeCertPEM(clientCert)
+		tmpl.AuthInfos[name].AuthInfo.ClientKeyData, err = keyutil.MarshalPrivateKeyToPEM(clientKey)
+		if err != nil {
+			return fmt.Errorf("cannot marshal private key to PEM: %w", err)
+		}
+	}
+
+	for name := range tmpl.Contexts {
+		tmpl.Contexts[name].Name = contextUserName
+		tmpl.Contexts[name].Context.AuthInfo = contextUserName
+	}
+
+	tmpl.CurrentContext = contextUserName
+
+	_, err = utilities.CreateOrUpdateWithConflict(ctx, r.Client, secret, func() error {
+		labels := secret.GetLabels()
+		if labels == nil {
+			labels = map[string]string{}
+		}
+
+		labels[kamajiv1alpha1.ManagedByLabel] = generator.Name
+		labels[kamajiv1alpha1.ManagedForLabel] = tcp.Name
+		labels[constants.ControllerLabelResource] = utilities.CertificateKubeconfigLabel
+
+		secret.SetLabels(labels)
+
+		if secret.Data == nil {
+			secret.Data = make(map[string][]byte)
+		}
+
+		secret.Data["value"], err = utilities.EncodeToYaml(tmpl)
+		if err != nil {
+			return fmt.Errorf("cannot encode generated Kubeconfig to YAML: %w", err)
+		}
+
+		if utilities.IsRotationRequested(secret) {
+			utilities.SetLastRotationTimestamp(secret)
+		}
+
+		if orErr := controllerutil.SetOwnerReference(tcp, secret, r.Client.Scheme()); orErr != nil {
+			return orErr
+		}
+
+		return ctrl.SetControllerReference(tcp, secret, r.Client.Scheme())
+	})
+	if err != nil {
+		return fmt.Errorf("cannot create or update generated Kubeconfig: %w", err)
+	}
+
+	return nil
+}
+
+func (r *KubeconfigGeneratorReconciler) isValid(secret *corev1.Secret, tmpl *clientcmdapiv1.Config, groups sets.Set[string], user string) (bool, error) {
+	if utilities.IsRotationRequested(secret) {
+		return false, nil
+	}
+
+	concrete, decodeErr := utilities.DecodeKubeconfig(*secret, "value")
+	if decodeErr != nil {
+		return false, decodeErr
+	}
+	// Checking Certificate Authority validity
+	switch {
+	case len(concrete.Clusters) != len(tmpl.Clusters):
+		return false, nil
+	default:
+		for i := range tmpl.Clusters {
+			if !bytes.Equal(tmpl.Clusters[i].Cluster.CertificateAuthorityData, concrete.Clusters[i].Cluster.CertificateAuthorityData) {
+				return false, nil
+			}
+
+			if tmpl.Clusters[i].Cluster.Server != concrete.Clusters[i].Cluster.Server {
+				return false, nil
+			}
+		}
+	}
+
+	for _, auth := range concrete.AuthInfos {
+		valid, vErr := crypto.IsValidCertificateKeyPairBytes(auth.AuthInfo.ClientCertificateData, auth.AuthInfo.ClientKeyData, r.NotValidThreshold)
+		if vErr != nil {
+			return false, vErr
+		}
+		if !valid {
+			return false, nil
+		}
+
+		crt, crtErr := crypto.ParseCertificateBytes(auth.AuthInfo.ClientCertificateData)
+		if crtErr != nil {
+			return false, crtErr
+		}
+
+		if crt.Subject.CommonName != user {
+			return false, nil
+		}
+
+		if !sets.New[string](crt.Subject.Organization...).Equal(groups) {
+			return false, nil
+		}
+	}
+
+	return true, nil
+}
+
+func (r *KubeconfigGeneratorReconciler) SetupWithManager(mgr manager.Manager) error {
+	return ctrl.NewControllerManagedBy(mgr).
+		For(&kamajiv1alpha1.KubeconfigGenerator{}).
+		WatchesRawSource(source.Channel(r.CertificateChan, handler.Funcs{GenericFunc: func(_ context.Context, genericEvent event.TypedGenericEvent[client.Object], w workqueue.TypedRateLimitingInterface[reconcile.Request]) {
+			w.AddRateLimited(ctrl.Request{
+				NamespacedName: types.NamespacedName{
+					Name: genericEvent.Object.GetName(),
+				},
+			})
+		}})).
+		Watches(&corev1.Secret{}, handler.TypedEnqueueRequestsFromMapFunc(func(ctx context.Context, object client.Object) []ctrl.Request {
+			if object.GetLabels() == nil {
+				return nil
+			}
+
+			v, found := object.GetLabels()[kamajiv1alpha1.ManagedByLabel]
+			if !found {
+				return nil
+			}
+
+			return []ctrl.Request{
+				{
+					NamespacedName: types.NamespacedName{
+						Name: v,
+					},
+				},
+			}
+		})).
+		Complete(r)
+}

controllers/kubeconfiggenerator_watcher.go

@@ -0,0 +1,75 @@
+// Copyright 2022 Clastix Labs
+// SPDX-License-Identifier: Apache-2.0
+
+package controllers
+
+import (
+	"context"
+
+	apierrors "k8s.io/apimachinery/pkg/api/errors"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/labels"
+	ctrl "sigs.k8s.io/controller-runtime"
+	"sigs.k8s.io/controller-runtime/pkg/client"
+	"sigs.k8s.io/controller-runtime/pkg/event"
+	"sigs.k8s.io/controller-runtime/pkg/log"
+	"sigs.k8s.io/controller-runtime/pkg/manager"
+
+	kamajiv1alpha1 "github.com/clastix/kamaji/api/v1alpha1"
+)
+
+type KubeconfigGeneratorWatcher struct {
+	Client        client.Client
+	GeneratorChan chan event.GenericEvent
+}
+
+func (r *KubeconfigGeneratorWatcher) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) {
+	logger := log.FromContext(ctx)
+
+	logger.Info("reconciling resource")
+
+	var tcp kamajiv1alpha1.TenantControlPlane
+	if err := r.Client.Get(ctx, req.NamespacedName, &tcp); err != nil {
+		if apierrors.IsNotFound(err) {
+			logger.Info("resource may have been deleted, skipping")
+
+			return ctrl.Result{}, nil
+		}
+
+		logger.Error(err, "cannot retrieve the required resource")
+
+		return ctrl.Result{}, err
+	}
+
+	var generators kamajiv1alpha1.KubeconfigGeneratorList
+	if err := r.Client.List(ctx, &generators); err != nil {
+		logger.Error(err, "cannot list generators")
+
+		return ctrl.Result{}, err
+	}
+
+	for _, generator := range generators.Items {
+		sel, err := metav1.LabelSelectorAsSelector(&generator.Spec.TenantControlPlaneSelector)
+		if err != nil {
+			logger.Error(err, "cannot validate Selector", "generator", generator.Name)
+
+			return ctrl.Result{}, err
+		}
+
+		if sel.Matches(labels.Set(tcp.Labels)) {
+			logger.Info("pushing Generator", "generator", generator.Name)
+
+			r.GeneratorChan <- event.GenericEvent{
+				Object: &generator,
+			}
+		}
+	}
+
+	return ctrl.Result{}, nil
+}
+
+func (r *KubeconfigGeneratorWatcher) SetupWithManager(mgr manager.Manager) error {
+	return ctrl.NewControllerManagedBy(mgr).
+		For(&kamajiv1alpha1.TenantControlPlane{}).
+		Complete(r)
+}

controllers/resources.go

@@ -4,11 +4,14 @@
 package controllers
 
 import (
+	"context"
 	"fmt"
+	"time"
 
 	"github.com/go-logr/logr"
 	"github.com/google/uuid"
 	k8stypes "k8s.io/apimachinery/pkg/types"
+	"k8s.io/client-go/discovery"
 	"sigs.k8s.io/controller-runtime/pkg/client"
 	"sigs.k8s.io/controller-runtime/pkg/controller/controllerutil"
 
@@ -19,19 +22,24 @@ import (
 	"github.com/clastix/kamaji/internal/resources"
 	ds "github.com/clastix/kamaji/internal/resources/datastore"
 	"github.com/clastix/kamaji/internal/resources/konnectivity"
+	"github.com/clastix/kamaji/internal/utilities"
 )
 
 type GroupResourceBuilderConfiguration struct {
-	client               client.Client
-	log                  logr.Logger
-	tcpReconcilerConfig  TenantControlPlaneReconcilerConfig
-	tenantControlPlane   kamajiv1alpha1.TenantControlPlane
-	Connection           datastore.Connection
-	DataStore            kamajiv1alpha1.DataStore
-	KamajiNamespace      string
-	KamajiServiceAccount string
-	KamajiService        string
-	KamajiMigrateImage   string
+	client                        client.Client
+	log                           logr.Logger
+	tcpReconcilerConfig           TenantControlPlaneReconcilerConfig
+	tenantControlPlane            kamajiv1alpha1.TenantControlPlane
+	ExpirationThreshold           time.Duration
+	Connection                    datastore.Connection
+	DataStore                     kamajiv1alpha1.DataStore
+	DataStoreOverrides            []builder.DataStoreOverrides
+	DataStoreOverriedsConnections map[string]datastore.Connection
+	KamajiNamespace               string
+	KamajiServiceAccount          string
+	KamajiService                 string
+	KamajiMigrateImage            string
+	DiscoveryClient               discovery.DiscoveryInterface
 }
 
 type GroupDeletableResourceBuilderConfiguration struct {
@@ -46,8 +54,30 @@ type GroupDeletableResourceBuilderConfiguration struct {
 // GetResources returns a list of resources that will be used to provide tenant control planes
 // Currently there is only a default approach
 // TODO: the idea of this function is to become a factory to return the group of resources according to the given configuration.
-func GetResources(config GroupResourceBuilderConfiguration) []resources.Resource {
-	return getDefaultResources(config)
+func GetResources(ctx context.Context, config GroupResourceBuilderConfiguration) []resources.Resource {
+	resources := []resources.Resource{}
+
+	resources = append(resources, getDataStoreMigratingResources(config.client, config.KamajiNamespace, config.KamajiMigrateImage, config.KamajiServiceAccount, config.KamajiService)...)
+	resources = append(resources, getUpgradeResources(config.client)...)
+	resources = append(resources, getKubernetesServiceResources(config.client)...)
+	resources = append(resources, getKubeadmConfigResources(config.client, getTmpDirectory(config.tcpReconcilerConfig.TmpBaseDirectory, config.tenantControlPlane), config.DataStore)...)
+	resources = append(resources, getKubernetesCertificatesResources(config.client, config.tcpReconcilerConfig, config.tenantControlPlane)...)
+	resources = append(resources, getKubeconfigResources(config.client, config.tcpReconcilerConfig, config.tenantControlPlane)...)
+	resources = append(resources, getKubernetesStorageResources(config.client, config.Connection, config.DataStore, config.ExpirationThreshold)...)
+	resources = append(resources, getKubernetesAdditionalStorageResources(config.client, config.DataStoreOverriedsConnections, config.DataStoreOverrides, config.ExpirationThreshold)...)
+	resources = append(resources, getKonnectivityServerRequirementsResources(config.client, config.ExpirationThreshold)...)
+	resources = append(resources, getKubernetesDeploymentResources(config.client, config.tcpReconcilerConfig, config.DataStore, config.DataStoreOverrides)...)
+	resources = append(resources, getKonnectivityServerPatchResources(config.client)...)
+	resources = append(resources, getDataStoreMigratingCleanup(config.client, config.KamajiNamespace)...)
+	resources = append(resources, getKubernetesIngressResources(config.client)...)
+
+	// Conditionally add Gateway resources
+	if utilities.AreGatewayResourcesAvailable(ctx, config.client, config.DiscoveryClient) {
+		resources = append(resources, getKubernetesGatewayResources(config.client)...)
+		resources = append(resources, getKonnectivityGatewayResources(config.client)...)
+	}
+
+	return resources
 }
 
 // GetDeletableResources returns a list of resources that have to be deleted when tenant control planes are deleted
@@ -71,23 +101,6 @@ func GetDeletableResources(tcp *kamajiv1alpha1.TenantControlPlane, config GroupD
 	return res
 }
 
-func getDefaultResources(config GroupResourceBuilderConfiguration) []resources.Resource {
-	resources := getDataStoreMigratingResources(config.client, config.KamajiNamespace, config.KamajiMigrateImage, config.KamajiServiceAccount, config.KamajiService)
-	resources = append(resources, getUpgradeResources(config.client)...)
-	resources = append(resources, getKubernetesServiceResources(config.client)...)
-	resources = append(resources, getKubeadmConfigResources(config.client, getTmpDirectory(config.tcpReconcilerConfig.TmpBaseDirectory, config.tenantControlPlane), config.DataStore)...)
-	resources = append(resources, getKubernetesCertificatesResources(config.client, config.tcpReconcilerConfig, config.tenantControlPlane)...)
-	resources = append(resources, getKubeconfigResources(config.client, config.tcpReconcilerConfig, config.tenantControlPlane)...)
-	resources = append(resources, getKubernetesStorageResources(config.client, config.Connection, config.DataStore)...)
-	resources = append(resources, getKonnectivityServerRequirementsResources(config.client)...)
-	resources = append(resources, getKubernetesDeploymentResources(config.client, config.tcpReconcilerConfig, config.DataStore)...)
-	resources = append(resources, getKonnectivityServerPatchResources(config.client)...)
-	resources = append(resources, getDataStoreMigratingCleanup(config.client, config.KamajiNamespace)...)
-	resources = append(resources, getKubernetesIngressResources(config.client)...)
-
-	return resources
-}
-
 func getDataStoreMigratingCleanup(c client.Client, kamajiNamespace string) []resources.Resource {
 	return []resources.Resource{
 		&ds.Migrate{
@@ -126,6 +139,22 @@ func getKubernetesServiceResources(c client.Client) []resources.Resource {
 	}
 }
 
+func getKubernetesGatewayResources(c client.Client) []resources.Resource {
+	return []resources.Resource{
+		&resources.KubernetesGatewayResource{
+			Client: c,
+		},
+	}
+}
+
+func getKonnectivityGatewayResources(c client.Client) []resources.Resource {
+	return []resources.Resource{
+		&konnectivity.KubernetesKonnectivityGatewayResource{
+			Client: c,
+		},
+	}
+}
+
 func getKubeadmConfigResources(c client.Client, tmpDirectory string, dataStore kamajiv1alpha1.DataStore) []resources.Resource {
 	var endpoints []string
 
@@ -148,28 +177,33 @@ func getKubeadmConfigResources(c client.Client, tmpDirectory string, dataStore k
 func getKubernetesCertificatesResources(c client.Client, tcpReconcilerConfig TenantControlPlaneReconcilerConfig, tenantControlPlane kamajiv1alpha1.TenantControlPlane) []resources.Resource {
 	return []resources.Resource{
 		&resources.CACertificate{
-			Client:       c,
-			TmpDirectory: getTmpDirectory(tcpReconcilerConfig.TmpBaseDirectory, tenantControlPlane),
+			Client:                  c,
+			TmpDirectory:            getTmpDirectory(tcpReconcilerConfig.TmpBaseDirectory, tenantControlPlane),
+			CertExpirationThreshold: tcpReconcilerConfig.CertExpirationThreshold,
 		},
 		&resources.FrontProxyCACertificate{
-			Client:       c,
-			TmpDirectory: getTmpDirectory(tcpReconcilerConfig.TmpBaseDirectory, tenantControlPlane),
+			Client:                  c,
+			TmpDirectory:            getTmpDirectory(tcpReconcilerConfig.TmpBaseDirectory, tenantControlPlane),
+			CertExpirationThreshold: tcpReconcilerConfig.CertExpirationThreshold,
 		},
 		&resources.SACertificate{
 			Client:       c,
 			TmpDirectory: getTmpDirectory(tcpReconcilerConfig.TmpBaseDirectory, tenantControlPlane),
 		},
 		&resources.APIServerCertificate{
-			Client:       c,
-			TmpDirectory: getTmpDirectory(tcpReconcilerConfig.TmpBaseDirectory, tenantControlPlane),
+			Client:                  c,
+			TmpDirectory:            getTmpDirectory(tcpReconcilerConfig.TmpBaseDirectory, tenantControlPlane),
+			CertExpirationThreshold: tcpReconcilerConfig.CertExpirationThreshold,
 		},
 		&resources.APIServerKubeletClientCertificate{
-			Client:       c,
-			TmpDirectory: getTmpDirectory(tcpReconcilerConfig.TmpBaseDirectory, tenantControlPlane),
+			Client:                  c,
+			TmpDirectory:            getTmpDirectory(tcpReconcilerConfig.TmpBaseDirectory, tenantControlPlane),
+			CertExpirationThreshold: tcpReconcilerConfig.CertExpirationThreshold,
 		},
 		&resources.FrontProxyClientCertificate{
-			Client:       c,
-			TmpDirectory: getTmpDirectory(tcpReconcilerConfig.TmpBaseDirectory, tenantControlPlane),
+			Client:                  c,
+			TmpDirectory:            getTmpDirectory(tcpReconcilerConfig.TmpBaseDirectory, tenantControlPlane),
+			CertExpirationThreshold: tcpReconcilerConfig.CertExpirationThreshold,
 		},
 	}
 }
@@ -177,33 +211,37 @@ func getKubernetesCertificatesResources(c client.Client, tcpReconcilerConfig Ten
 func getKubeconfigResources(c client.Client, tcpReconcilerConfig TenantControlPlaneReconcilerConfig, tenantControlPlane kamajiv1alpha1.TenantControlPlane) []resources.Resource {
 	return []resources.Resource{
 		&resources.KubeconfigResource{
-			Name:               "admin-kubeconfig",
-			Client:             c,
-			KubeConfigFileName: resources.AdminKubeConfigFileName,
-			TmpDirectory:       getTmpDirectory(tcpReconcilerConfig.TmpBaseDirectory, tenantControlPlane),
+			Client:                  c,
+			Name:                    "admin-kubeconfig",
+			KubeConfigFileName:      resources.AdminKubeConfigFileName,
+			TmpDirectory:            getTmpDirectory(tcpReconcilerConfig.TmpBaseDirectory, tenantControlPlane),
+			CertExpirationThreshold: tcpReconcilerConfig.CertExpirationThreshold,
 		},
 		&resources.KubeconfigResource{
-			Name:               "admin-kubeconfig",
-			Client:             c,
-			KubeConfigFileName: resources.SuperAdminKubeConfigFileName,
-			TmpDirectory:       getTmpDirectory(tcpReconcilerConfig.TmpBaseDirectory, tenantControlPlane),
+			Client:                  c,
+			Name:                    "admin-kubeconfig",
+			KubeConfigFileName:      resources.SuperAdminKubeConfigFileName,
+			TmpDirectory:            getTmpDirectory(tcpReconcilerConfig.TmpBaseDirectory, tenantControlPlane),
+			CertExpirationThreshold: tcpReconcilerConfig.CertExpirationThreshold,
 		},
 		&resources.KubeconfigResource{
-			Name:               "controller-manager-kubeconfig",
-			Client:             c,
-			KubeConfigFileName: resources.ControllerManagerKubeConfigFileName,
-			TmpDirectory:       getTmpDirectory(tcpReconcilerConfig.TmpBaseDirectory, tenantControlPlane),
+			Client:                  c,
+			Name:                    "controller-manager-kubeconfig",
+			KubeConfigFileName:      resources.ControllerManagerKubeConfigFileName,
+			TmpDirectory:            getTmpDirectory(tcpReconcilerConfig.TmpBaseDirectory, tenantControlPlane),
+			CertExpirationThreshold: tcpReconcilerConfig.CertExpirationThreshold,
 		},
 		&resources.KubeconfigResource{
-			Name:               "scheduler-kubeconfig",
-			Client:             c,
-			KubeConfigFileName: resources.SchedulerKubeConfigFileName,
-			TmpDirectory:       getTmpDirectory(tcpReconcilerConfig.TmpBaseDirectory, tenantControlPlane),
+			Client:                  c,
+			Name:                    "scheduler-kubeconfig",
+			KubeConfigFileName:      resources.SchedulerKubeConfigFileName,
+			TmpDirectory:            getTmpDirectory(tcpReconcilerConfig.TmpBaseDirectory, tenantControlPlane),
+			CertExpirationThreshold: tcpReconcilerConfig.CertExpirationThreshold,
 		},
 	}
 }
 
-func getKubernetesStorageResources(c client.Client, dbConnection datastore.Connection, datastore kamajiv1alpha1.DataStore) []resources.Resource {
+func getKubernetesStorageResources(c client.Client, dbConnection datastore.Connection, datastore kamajiv1alpha1.DataStore, threshold time.Duration) []resources.Resource {
 	return []resources.Resource{
 		&ds.MultiTenancy{
 			DataStore: datastore,
@@ -219,18 +257,49 @@ func getKubernetesStorageResources(c client.Client, dbConnection datastore.Conne
 			DataStore:  datastore,
 		},
 		&ds.Certificate{
-			Client:    c,
-			DataStore: datastore,
+			Client:                  c,
+			DataStore:               datastore,
+			CertExpirationThreshold: threshold,
 		},
 	}
 }
 
-func getKubernetesDeploymentResources(c client.Client, tcpReconcilerConfig TenantControlPlaneReconcilerConfig, dataStore kamajiv1alpha1.DataStore) []resources.Resource {
+func getKubernetesAdditionalStorageResources(c client.Client, dbConnections map[string]datastore.Connection, dataStoreOverrides []builder.DataStoreOverrides, threshold time.Duration) []resources.Resource {
+	res := make([]resources.Resource, 0, len(dataStoreOverrides))
+	for _, dso := range dataStoreOverrides {
+		datastore := dso.DataStore
+		res = append(res,
+			&ds.MultiTenancy{
+				DataStore: datastore,
+			},
+			&ds.Config{
+				Client:     c,
+				ConnString: dbConnections[dso.Resource].GetConnectionString(),
+				DataStore:  datastore,
+				IsOverride: true,
+			},
+			&ds.Setup{
+				Client:     c,
+				Connection: dbConnections[dso.Resource],
+				DataStore:  datastore,
+			},
+			&ds.Certificate{
+				Client:                  c,
+				DataStore:               datastore,
+				CertExpirationThreshold: threshold,
+			})
+	}
+
+	return res
+}
+
+func getKubernetesDeploymentResources(c client.Client, tcpReconcilerConfig TenantControlPlaneReconcilerConfig, dataStore kamajiv1alpha1.DataStore, dataStoreOverrides []builder.DataStoreOverrides) []resources.Resource {
 	return []resources.Resource{
 		&resources.KubernetesDeploymentResource{
 			Client:             c,
 			DataStore:          dataStore,
 			KineContainerImage: tcpReconcilerConfig.KineContainerImage,
+			DataStoreOverrides: dataStoreOverrides,
 		},
 	}
 }
@@ -251,10 +320,10 @@ func GetExternalKonnectivityResources(c client.Client) []resources.Resource {
 	}
 }
 
-func getKonnectivityServerRequirementsResources(c client.Client) []resources.Resource {
+func getKonnectivityServerRequirementsResources(c client.Client, threshold time.Duration) []resources.Resource {
 	return []resources.Resource{
 		&konnectivity.EgressSelectorConfigurationResource{Client: c},
-		&konnectivity.CertificateResource{Client: c},
+		&konnectivity.CertificateResource{Client: c, CertExpirationThreshold: threshold},
 		&konnectivity.KubeconfigResource{Client: c},
 	}
 }

controllers/soot/controllers/coredns.go

@@ -5,9 +5,9 @@ package controllers
 
 import (
 	"context"
+	"errors"
 
 	"github.com/go-logr/logr"
-	"github.com/pkg/errors"
 	appsv1 "k8s.io/api/apps/v1"
 	corev1 "k8s.io/api/core/v1"
 	rbacv1 "k8s.io/api/rbac/v1"
@@ -36,6 +36,7 @@ type CoreDNS struct {
 	AdminClient               client.Client
 	GetTenantControlPlaneFunc utils.TenantControlPlaneRetrievalFn
 	TriggerChannel            chan event.GenericEvent
+	ControllerName            string
 }
 
 func (c *CoreDNS) Reconcile(ctx context.Context, _ reconcile.Request) (reconcile.Result, error) {
@@ -80,6 +81,7 @@ func (c *CoreDNS) Reconcile(ctx context.Context, _ reconcile.Request) (reconcile
 
 func (c *CoreDNS) SetupWithManager(mgr manager.Manager) error {
 	return controllerruntime.NewControllerManagedBy(mgr).
+		Named(c.ControllerName).
 		WithOptions(controller.TypedOptions[reconcile.Request]{SkipNameValidation: ptr.To(true)}).
 		For(&rbacv1.ClusterRoleBinding{}, builder.WithPredicates(predicate.NewPredicateFuncs(func(object client.Object) bool {
 			return object.GetName() == kubeadm.CoreDNSClusterRoleBindingName

controllers/soot/controllers/errors/paused_reconciliation.go

@@ -3,8 +3,6 @@
 
 package errors
 
-import (
-	"github.com/pkg/errors"
-)
+import "errors"
 
 var ErrPausedReconciliation = errors.New("paused reconciliation, no further actions")

controllers/soot/controllers/konnectivity.go

@@ -5,9 +5,9 @@ package controllers
 
 import (
 	"context"
+	"errors"
 
 	"github.com/go-logr/logr"
-	"github.com/pkg/errors"
 	appsv1 "k8s.io/api/apps/v1"
 	corev1 "k8s.io/api/core/v1"
 	v1 "k8s.io/api/rbac/v1"
@@ -37,6 +37,7 @@ type KonnectivityAgent struct {
 	AdminClient               client.Client
 	GetTenantControlPlaneFunc utils.TenantControlPlaneRetrievalFn
 	TriggerChannel            chan event.GenericEvent
+	ControllerName            string
 }
 
 func (k *KonnectivityAgent) Reconcile(ctx context.Context, _ reconcile.Request) (reconcile.Result, error) {
@@ -53,6 +54,10 @@ func (k *KonnectivityAgent) Reconcile(ctx context.Context, _ reconcile.Request)
 		return reconcile.Result{}, err
 	}
 
+	if tcp.Spec.Addons.Konnectivity == nil {
+		return reconcile.Result{}, nil
+	}
+
 	for _, resource := range controllers.GetExternalKonnectivityResources(k.AdminClient) {
 		k.Logger.Info("start processing", "resource", resource.GetName())
 
@@ -83,6 +88,7 @@ func (k *KonnectivityAgent) Reconcile(ctx context.Context, _ reconcile.Request)
 
 func (k *KonnectivityAgent) SetupWithManager(mgr manager.Manager) error {
 	return controllerruntime.NewControllerManagedBy(mgr).
+		Named(k.ControllerName).
 		WithOptions(controller.TypedOptions[reconcile.Request]{SkipNameValidation: ptr.To(true)}).
 		For(&appsv1.DaemonSet{}, builder.WithPredicates(predicate.NewPredicateFuncs(func(object client.Object) bool {
 			return object.GetName() == konnectivity.AgentName && object.GetNamespace() == konnectivity.AgentNamespace

controllers/soot/controllers/kubeadm_phase.go

@@ -5,9 +5,9 @@ package controllers
 
 import (
 	"context"
+	"errors"
 
 	"github.com/go-logr/logr"
-	"github.com/pkg/errors"
 	"k8s.io/utils/ptr"
 	controllerruntime "sigs.k8s.io/controller-runtime"
 	"sigs.k8s.io/controller-runtime/pkg/builder"
@@ -29,6 +29,7 @@ type KubeadmPhase struct {
 	GetTenantControlPlaneFunc utils.TenantControlPlaneRetrievalFn
 	TriggerChannel            chan event.GenericEvent
 	Phase                     resources.KubeadmPhaseResource
+	ControllerName            string
 
 	logger logr.Logger
 }
@@ -75,6 +76,7 @@ func (k *KubeadmPhase) SetupWithManager(mgr manager.Manager) error {
 	k.logger = mgr.GetLogger().WithName(k.Phase.GetName())
 
 	return controllerruntime.NewControllerManagedBy(mgr).
+		Named(k.ControllerName).
 		WithOptions(controller.TypedOptions[reconcile.Request]{SkipNameValidation: ptr.To(true)}).
 		For(k.Phase.GetWatchedObject(), builder.WithPredicates(predicate.NewPredicateFuncs(k.Phase.GetPredicateFunc()))).
 		WatchesRawSource(source.Channel(k.TriggerChannel, &handler.EnqueueRequestForObject{})).

controllers/soot/controllers/kubeproxy.go

@@ -5,9 +5,9 @@ package controllers
 
 import (
 	"context"
+	"errors"
 
 	"github.com/go-logr/logr"
-	"github.com/pkg/errors"
 	appsv1 "k8s.io/api/apps/v1"
 	corev1 "k8s.io/api/core/v1"
 	rbacv1 "k8s.io/api/rbac/v1"
@@ -36,6 +36,7 @@ type KubeProxy struct {
 	AdminClient               client.Client
 	GetTenantControlPlaneFunc utils.TenantControlPlaneRetrievalFn
 	TriggerChannel            chan event.GenericEvent
+	ControllerName            string
 }
 
 func (k *KubeProxy) Reconcile(ctx context.Context, _ reconcile.Request) (reconcile.Result, error) {
@@ -82,6 +83,7 @@ func (k *KubeProxy) Reconcile(ctx context.Context, _ reconcile.Request) (reconci
 
 func (k *KubeProxy) SetupWithManager(mgr manager.Manager) error {
 	return controllerruntime.NewControllerManagedBy(mgr).
+		Named(k.ControllerName).
 		WithOptions(controller.TypedOptions[reconcile.Request]{SkipNameValidation: ptr.To(true)}).
 		For(&rbacv1.ClusterRoleBinding{}, builder.WithPredicates(predicate.NewPredicateFuncs(func(object client.Object) bool {
 			return object.GetName() == kubeadm.KubeProxyClusterRoleBindingName

controllers/soot/controllers/migrate.go

@@ -5,11 +5,11 @@ package controllers
 
 import (
 	"context"
+	"errors"
 	"fmt"
 	"time"
 
 	"github.com/go-logr/logr"
-	"github.com/pkg/errors"
 	admissionregistrationv1 "k8s.io/api/admissionregistration/v1"
 	apierrors "k8s.io/apimachinery/pkg/api/errors"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
@@ -39,6 +39,7 @@ type Migrate struct {
 	WebhookServiceName        string
 	WebhookCABundle           []byte
 	TriggerChannel            chan event.GenericEvent
+	ControllerName            string
 }
 
 func (m *Migrate) Reconcile(ctx context.Context, _ reconcile.Request) (reconcile.Result, error) {
@@ -189,6 +190,7 @@ func (m *Migrate) SetupWithManager(mgr manager.Manager) error {
 	m.TriggerChannel = make(chan event.GenericEvent)
 
 	return controllerruntime.NewControllerManagedBy(mgr).
+		Named(m.ControllerName).
 		WithOptions(controller.TypedOptions[reconcile.Request]{SkipNameValidation: pointer.To(true)}).
 		For(&admissionregistrationv1.ValidatingWebhookConfiguration{}, builder.WithPredicates(predicate.NewPredicateFuncs(func(object client.Object) bool {
 			vwc := m.object()

controllers/soot/controllers/write_permissions.go

@@ -0,0 +1,209 @@
+// Copyright 2022 Clastix Labs
+// SPDX-License-Identifier: Apache-2.0
+
+package controllers
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	"github.com/go-logr/logr"
+	admissionregistrationv1 "k8s.io/api/admissionregistration/v1"
+	apierrors "k8s.io/apimachinery/pkg/api/errors"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/kubernetes/cmd/kubeadm/app/util/errors"
+	"k8s.io/utils/ptr"
+	controllerruntime "sigs.k8s.io/controller-runtime"
+	"sigs.k8s.io/controller-runtime/pkg/builder"
+	"sigs.k8s.io/controller-runtime/pkg/client"
+	"sigs.k8s.io/controller-runtime/pkg/controller"
+	"sigs.k8s.io/controller-runtime/pkg/event"
+	"sigs.k8s.io/controller-runtime/pkg/handler"
+	"sigs.k8s.io/controller-runtime/pkg/manager"
+	"sigs.k8s.io/controller-runtime/pkg/predicate"
+	"sigs.k8s.io/controller-runtime/pkg/reconcile"
+	"sigs.k8s.io/controller-runtime/pkg/source"
+
+	kamajiv1alpha1 "github.com/clastix/kamaji/api/v1alpha1"
+	sooterrors "github.com/clastix/kamaji/controllers/soot/controllers/errors"
+	"github.com/clastix/kamaji/controllers/utils"
+	"github.com/clastix/kamaji/internal/utilities"
+)
+
+type WritePermissions struct {
+	Logger                    logr.Logger
+	Client                    client.Client
+	GetTenantControlPlaneFunc utils.TenantControlPlaneRetrievalFn
+	WebhookNamespace          string
+	WebhookServiceName        string
+	WebhookCABundle           []byte
+	TriggerChannel            chan event.GenericEvent
+	ControllerName            string
+}
+
+func (r *WritePermissions) Reconcile(ctx context.Context, _ reconcile.Request) (reconcile.Result, error) {
+	tcp, err := r.GetTenantControlPlaneFunc()
+	if err != nil {
+		if errors.Is(err, sooterrors.ErrPausedReconciliation) {
+			r.Logger.Info(err.Error())
+
+			return reconcile.Result{}, nil
+		}
+
+		return reconcile.Result{}, err
+	}
+	// Cannot detect the status of the TenantControlPlane, enqueuing back
+	if tcp.Status.Kubernetes.Version.Status == nil {
+		return reconcile.Result{RequeueAfter: time.Second}, nil
+	}
+
+	switch {
+	case ptr.Deref(tcp.Status.Kubernetes.Version.Status, kamajiv1alpha1.VersionUnknown) == kamajiv1alpha1.VersionWriteLimited &&
+		tcp.Spec.WritePermissions.HasAnyLimitation():
+		err = r.createOrUpdate(ctx, tcp.Spec.WritePermissions)
+	default:
+		err = r.cleanup(ctx)
+	}
+
+	if err != nil {
+		r.Logger.Error(err, "reconciliation failed")
+
+		return reconcile.Result{}, err
+	}
+
+	return reconcile.Result{}, nil
+}
+
+func (r *WritePermissions) createOrUpdate(ctx context.Context, writePermissions kamajiv1alpha1.Permissions) error {
+	obj := r.object().DeepCopy()
+
+	_, err := utilities.CreateOrUpdateWithConflict(ctx, r.Client, obj, func() error {
+		obj.Webhooks = []admissionregistrationv1.ValidatingWebhook{
+			{
+				Name: "leases.write-permissions.kamaji.clastix.io",
+				ClientConfig: admissionregistrationv1.WebhookClientConfig{
+					URL:      ptr.To(fmt.Sprintf("https://%s.%s.svc:443/write-permission", r.WebhookServiceName, r.WebhookNamespace)),
+					CABundle: r.WebhookCABundle,
+				},
+				Rules: []admissionregistrationv1.RuleWithOperations{
+					{
+						Operations: []admissionregistrationv1.OperationType{
+							admissionregistrationv1.Create,
+							admissionregistrationv1.Delete,
+						},
+						Rule: admissionregistrationv1.Rule{
+							APIGroups:   []string{"*"},
+							APIVersions: []string{"*"},
+							Resources:   []string{"*"},
+							Scope:       ptr.To(admissionregistrationv1.NamespacedScope),
+						},
+					},
+				},
+				FailurePolicy: ptr.To(admissionregistrationv1.Fail),
+				MatchPolicy:   ptr.To(admissionregistrationv1.Equivalent),
+				NamespaceSelector: &metav1.LabelSelector{
+					MatchExpressions: []metav1.LabelSelectorRequirement{
+						{
+							Key:      "kubernetes.io/metadata.name",
+							Operator: metav1.LabelSelectorOpIn,
+							Values: []string{
+								"kube-node-lease",
+							},
+						},
+					},
+				},
+				SideEffects:             ptr.To(admissionregistrationv1.SideEffectClassNoneOnDryRun),
+				AdmissionReviewVersions: []string{"v1"},
+			},
+			{
+				Name: "catchall.write-permissions.kamaji.clastix.io",
+				ClientConfig: admissionregistrationv1.WebhookClientConfig{
+					URL:      ptr.To(fmt.Sprintf("https://%s.%s.svc:443/write-permission", r.WebhookServiceName, r.WebhookNamespace)),
+					CABundle: r.WebhookCABundle,
+				},
+				Rules: []admissionregistrationv1.RuleWithOperations{
+					{
+						Operations: func() []admissionregistrationv1.OperationType {
+							var ops []admissionregistrationv1.OperationType
+
+							if writePermissions.BlockCreate {
+								ops = append(ops, admissionregistrationv1.Create)
+							}
+
+							if writePermissions.BlockUpdate {
+								ops = append(ops, admissionregistrationv1.Update)
+							}
+
+							if writePermissions.BlockDelete {
+								ops = append(ops, admissionregistrationv1.Delete)
+							}
+
+							return ops
+						}(),
+						Rule: admissionregistrationv1.Rule{
+							APIGroups:   []string{"*"},
+							APIVersions: []string{"*"},
+							Resources:   []string{"*"},
+							Scope:       ptr.To(admissionregistrationv1.AllScopes),
+						},
+					},
+				},
+				FailurePolicy: ptr.To(admissionregistrationv1.Fail),
+				MatchPolicy:   ptr.To(admissionregistrationv1.Equivalent),
+				NamespaceSelector: &metav1.LabelSelector{
+					MatchExpressions: []metav1.LabelSelectorRequirement{
+						{
+							Key:      "kubernetes.io/metadata.name",
+							Operator: metav1.LabelSelectorOpNotIn,
+							Values: []string{
+								"kube-system",
+								"kube-node-lease",
+							},
+						},
+					},
+				},
+				SideEffects:             ptr.To(admissionregistrationv1.SideEffectClassNoneOnDryRun),
+				TimeoutSeconds:          nil,
+				AdmissionReviewVersions: []string{"v1"},
+			},
+		}
+
+		return nil
+	})
+
+	return err
+}
+
+func (r *WritePermissions) cleanup(ctx context.Context) error {
+	if err := r.Client.Delete(ctx, r.object()); err != nil {
+		if apierrors.IsNotFound(err) {
+			return nil
+		}
+
+		return fmt.Errorf("unable to clean-up ValidationWebhook required for write permissions: %w", err)
+	}
+
+	return nil
+}
+
+func (r *WritePermissions) SetupWithManager(mgr manager.Manager) error {
+	r.TriggerChannel = make(chan event.GenericEvent)
+
+	return controllerruntime.NewControllerManagedBy(mgr).
+		Named(r.ControllerName).
+		WithOptions(controller.TypedOptions[reconcile.Request]{SkipNameValidation: ptr.To(true)}).
+		For(&admissionregistrationv1.ValidatingWebhookConfiguration{}, builder.WithPredicates(predicate.NewPredicateFuncs(func(object client.Object) bool {
+			return object.GetName() == r.object().GetName()
+		}))).
+		WatchesRawSource(source.Channel(r.TriggerChannel, &handler.EnqueueRequestForObject{})).
+		Complete(r)
+}
+
+func (r *WritePermissions) object() *admissionregistrationv1.ValidatingWebhookConfiguration {
+	return &admissionregistrationv1.ValidatingWebhookConfiguration{
+		ObjectMeta: metav1.ObjectMeta{
+			Name: "kamaji-write-permissions",
+		},
+	}
+}

controllers/soot/manager.go

@@ -193,7 +193,7 @@ func (m *Manager) Reconcile(ctx context.Context, request reconcile.Request) (res
 			for _, trigger := range v.triggers {
 				var shrunkTCP kamajiv1alpha1.TenantControlPlane
 
-				shrunkTCP.Name = tcp.Namespace
+				shrunkTCP.Name = tcp.Name
 				shrunkTCP.Namespace = tcp.Namespace
 
 				go utils.TriggerChannel(ctx, trigger, shrunkTCP)
@@ -253,6 +253,23 @@ func (m *Manager) Reconcile(ctx context.Context, request reconcile.Request) (res
 	//
 	// Register all the controllers of the soot here:
 	//
+	// Generate unique controller name prefix from TenantControlPlane to avoid metric conflicts
+	controllerNamePrefix := fmt.Sprintf("%s-%s", tcp.GetNamespace(), tcp.GetName())
+
+	writePermissions := &controllers.WritePermissions{
+		Logger:                    mgr.GetLogger().WithName("writePermissions"),
+		Client:                    mgr.GetClient(),
+		GetTenantControlPlaneFunc: m.retrieveTenantControlPlane(tcpCtx, request),
+		WebhookNamespace:          m.MigrateServiceNamespace,
+		WebhookServiceName:        m.MigrateServiceName,
+		WebhookCABundle:           m.MigrateCABundle,
+		TriggerChannel:            nil,
+		ControllerName:            fmt.Sprintf("%s-writepermissions", controllerNamePrefix),
+	}
+	if err = writePermissions.SetupWithManager(mgr); err != nil {
+		return reconcile.Result{}, err
+	}
+
 	migrate := &controllers.Migrate{
 		WebhookNamespace:          m.MigrateServiceNamespace,
 		WebhookServiceName:        m.MigrateServiceName,
@@ -260,6 +277,7 @@ func (m *Manager) Reconcile(ctx context.Context, request reconcile.Request) (res
 		GetTenantControlPlaneFunc: m.retrieveTenantControlPlane(tcpCtx, request),
 		Client:                    mgr.GetClient(),
 		Logger:                    mgr.GetLogger().WithName("migrate"),
+		ControllerName:            fmt.Sprintf("%s-migrate", controllerNamePrefix),
 	}
 	if err = migrate.SetupWithManager(mgr); err != nil {
 		return reconcile.Result{}, err
@@ -270,6 +288,7 @@ func (m *Manager) Reconcile(ctx context.Context, request reconcile.Request) (res
 		GetTenantControlPlaneFunc: m.retrieveTenantControlPlane(tcpCtx, request),
 		Logger:                    mgr.GetLogger().WithName("konnectivity_agent"),
 		TriggerChannel:            make(chan event.GenericEvent),
+		ControllerName:            fmt.Sprintf("%s-konnectivity", controllerNamePrefix),
 	}
 	if err = konnectivityAgent.SetupWithManager(mgr); err != nil {
 		return reconcile.Result{}, err
@@ -280,6 +299,7 @@ func (m *Manager) Reconcile(ctx context.Context, request reconcile.Request) (res
 		GetTenantControlPlaneFunc: m.retrieveTenantControlPlane(tcpCtx, request),
 		Logger:                    mgr.GetLogger().WithName("kube_proxy"),
 		TriggerChannel:            make(chan event.GenericEvent),
+		ControllerName:            fmt.Sprintf("%s-kubeproxy", controllerNamePrefix),
 	}
 	if err = kubeProxy.SetupWithManager(mgr); err != nil {
 		return reconcile.Result{}, err
@@ -290,6 +310,7 @@ func (m *Manager) Reconcile(ctx context.Context, request reconcile.Request) (res
 		GetTenantControlPlaneFunc: m.retrieveTenantControlPlane(tcpCtx, request),
 		Logger:                    mgr.GetLogger().WithName("coredns"),
 		TriggerChannel:            make(chan event.GenericEvent),
+		ControllerName:            fmt.Sprintf("%s-coredns", controllerNamePrefix),
 	}
 	if err = coreDNS.SetupWithManager(mgr); err != nil {
 		return reconcile.Result{}, err
@@ -302,6 +323,7 @@ func (m *Manager) Reconcile(ctx context.Context, request reconcile.Request) (res
 			Phase:  resources.PhaseUploadConfigKubeadm,
 		},
 		TriggerChannel: make(chan event.GenericEvent),
+		ControllerName: fmt.Sprintf("%s-kubeadmconfig", controllerNamePrefix),
 	}
 	if err = uploadKubeadmConfig.SetupWithManager(mgr); err != nil {
 		return reconcile.Result{}, err
@@ -314,6 +336,7 @@ func (m *Manager) Reconcile(ctx context.Context, request reconcile.Request) (res
 			Phase:  resources.PhaseUploadConfigKubelet,
 		},
 		TriggerChannel: make(chan event.GenericEvent),
+		ControllerName: fmt.Sprintf("%s-kubeletconfig", controllerNamePrefix),
 	}
 	if err = uploadKubeletConfig.SetupWithManager(mgr); err != nil {
 		return reconcile.Result{}, err
@@ -326,6 +349,7 @@ func (m *Manager) Reconcile(ctx context.Context, request reconcile.Request) (res
 			Phase:  resources.PhaseBootstrapToken,
 		},
 		TriggerChannel: make(chan event.GenericEvent),
+		ControllerName: fmt.Sprintf("%s-bootstraptoken", controllerNamePrefix),
 	}
 	if err = bootstrapToken.SetupWithManager(mgr); err != nil {
 		return reconcile.Result{}, err
@@ -338,6 +362,7 @@ func (m *Manager) Reconcile(ctx context.Context, request reconcile.Request) (res
 			Phase:  resources.PhaseClusterAdminRBAC,
 		},
 		TriggerChannel: make(chan event.GenericEvent),
+		ControllerName: fmt.Sprintf("%s-kubeadmrbac", controllerNamePrefix),
 	}
 	if err = kubeadmRbac.SetupWithManager(mgr); err != nil {
 		return reconcile.Result{}, err
@@ -370,6 +395,7 @@ func (m *Manager) Reconcile(ctx context.Context, request reconcile.Request) (res
 
 	m.sootMap[request.NamespacedName.String()] = sootItem{
 		triggers: []chan event.GenericEvent{
+			writePermissions.TriggerChannel,
 			migrate.TriggerChannel,
 			konnectivityAgent.TriggerChannel,
 			kubeProxy.TriggerChannel,

controllers/telemetry_controller.go

@@ -5,11 +5,11 @@ package controllers
 
 import (
 	"context"
+	"fmt"
 	"time"
 
 	"github.com/clastix/kamaji-telemetry/api"
 	telemetry "github.com/clastix/kamaji-telemetry/pkg/client"
-	"github.com/pkg/errors"
 	corev1 "k8s.io/api/core/v1"
 	"k8s.io/apimachinery/pkg/types"
 	"k8s.io/utils/ptr"
@@ -31,7 +31,7 @@ type TelemetryController struct {
 func (m *TelemetryController) retrieveControllerUID(ctx context.Context) (string, error) {
 	var defaultSvc corev1.Service
 	if err := m.Client.Get(ctx, types.NamespacedName{Name: "kubernetes", Namespace: "default"}, &defaultSvc); err != nil {
-		return "", errors.Wrap(err, "cannot start the telemetry controller")
+		return "", fmt.Errorf("cannot start the telemetry controller: %w", err)
 	}
 
 	return string(defaultSvc.UID), nil

controllers/tenantcontrolplane_controller.go

@@ -5,18 +5,20 @@ package controllers
 
 import (
 	"context"
+	"errors"
 	"fmt"
 	"strings"
 	"time"
 
 	"github.com/juju/mutex/v2"
-	"github.com/pkg/errors"
 	appsv1 "k8s.io/api/apps/v1"
 	batchv1 "k8s.io/api/batch/v1"
 	corev1 "k8s.io/api/core/v1"
 	networkingv1 "k8s.io/api/networking/v1"
 	k8serrors "k8s.io/apimachinery/pkg/api/errors"
 	k8stypes "k8s.io/apimachinery/pkg/types"
+	"k8s.io/client-go/discovery"
+	"k8s.io/client-go/util/retry"
 	"k8s.io/client-go/util/workqueue"
 	"k8s.io/utils/clock"
 	ctrl "sigs.k8s.io/controller-runtime"
@@ -30,13 +32,17 @@ import (
 	"sigs.k8s.io/controller-runtime/pkg/predicate"
 	"sigs.k8s.io/controller-runtime/pkg/reconcile"
 	"sigs.k8s.io/controller-runtime/pkg/source"
+	gatewayv1 "sigs.k8s.io/gateway-api/apis/v1"
+	gatewayv1alpha2 "sigs.k8s.io/gateway-api/apis/v1alpha2"
 
 	kamajiv1alpha1 "github.com/clastix/kamaji/api/v1alpha1"
 	"github.com/clastix/kamaji/controllers/finalizers"
 	"github.com/clastix/kamaji/controllers/utils"
+	controlplanebuilder "github.com/clastix/kamaji/internal/builders/controlplane"
 	"github.com/clastix/kamaji/internal/datastore"
 	kamajierrors "github.com/clastix/kamaji/internal/errors"
 	"github.com/clastix/kamaji/internal/resources"
+	"github.com/clastix/kamaji/internal/utilities"
 )
 
 // TenantControlPlaneReconciler reconciles a TenantControlPlane object.
@@ -50,6 +56,8 @@ type TenantControlPlaneReconciler struct {
 	KamajiService           string
 	KamajiMigrateImage      string
 	MaxConcurrentReconciles int
+	ReconcileTimeout        time.Duration
+	DiscoveryClient         discovery.DiscoveryInterface
 	// CertificateChan is the channel used by the CertificateLifecycleController that is checking for
 	// certificates and kubeconfig user certs validity: a generic event for the given TCP will be triggered
 	// once the validity threshold for the given certificate is reached.
@@ -60,10 +68,10 @@ type TenantControlPlaneReconciler struct {
 
 // TenantControlPlaneReconcilerConfig gives the necessary configuration for TenantControlPlaneReconciler.
 type TenantControlPlaneReconcilerConfig struct {
-	ReconcileTimeout     time.Duration
-	DefaultDataStoreName string
-	KineContainerImage   string
-	TmpBaseDirectory     string
+	DefaultDataStoreName    string
+	KineContainerImage      string
+	TmpBaseDirectory        string
+	CertExpirationThreshold time.Duration
 }
 
 //+kubebuilder:rbac:groups=kamaji.clastix.io,resources=tenantcontrolplanes,verbs=get;list;watch;create;update;patch;delete
@@ -75,12 +83,16 @@ type TenantControlPlaneReconcilerConfig struct {
 //+kubebuilder:rbac:groups=apps,resources=deployments,verbs=get;list;watch;create;update;patch;delete
 //+kubebuilder:rbac:groups=networking.k8s.io,resources=ingresses,verbs=get;list;watch;create;update;patch;delete
 //+kubebuilder:rbac:groups=batch,resources=jobs,verbs=get;list;watch;create;delete
+//+kubebuilder:rbac:groups=gateway.networking.k8s.io,resources=httproutes,verbs=get;list;watch;create;update;patch;delete
+//+kubebuilder:rbac:groups=gateway.networking.k8s.io,resources=grpcroutes,verbs=get;list;watch;create;update;patch;delete
+//+kubebuilder:rbac:groups=gateway.networking.k8s.io,resources=tlsroutes,verbs=get;list;watch;create;update;patch;delete
+//+kubebuilder:rbac:groups=gateway.networking.k8s.io,resources=gateways,verbs=get;list;watch
 
 func (r *TenantControlPlaneReconciler) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) {
 	log := log.FromContext(ctx)
 
 	var cancelFn context.CancelFunc
-	ctx, cancelFn = context.WithTimeout(ctx, r.Config.ReconcileTimeout)
+	ctx, cancelFn = context.WithTimeout(ctx, r.ReconcileTimeout)
 	defer cancelFn()
 
 	tenantControlPlane, err := r.getTenantControlPlane(ctx, req.NamespacedName)()
@@ -104,11 +116,11 @@ func (r *TenantControlPlaneReconciler) Reconcile(ctx context.Context, req ctrl.R
 	releaser, err := mutex.Acquire(r.mutexSpec(tenantControlPlane))
 	if err != nil {
 		switch {
-		case errors.As(err, &mutex.ErrTimeout):
+		case errors.Is(err, mutex.ErrTimeout):
 			log.Info("acquire timed out, current process is blocked by another reconciliation")
 
 			return ctrl.Result{RequeueAfter: time.Second}, nil
-		case errors.As(err, &mutex.ErrCancelled):
+		case errors.Is(err, mutex.ErrCancelled):
 			log.Info("acquire cancelled")
 
 			return ctrl.Result{RequeueAfter: time.Second}, nil
@@ -147,6 +159,25 @@ func (r *TenantControlPlaneReconciler) Reconcile(ctx context.Context, req ctrl.R
 	}
 	defer dsConnection.Close()
 
+	dso, err := r.dataStoreOverride(ctx, tenantControlPlane)
+	if err != nil {
+		log.Error(err, "cannot retrieve the DataStoreOverrides for the given instance")
+
+		return ctrl.Result{}, err
+	}
+	dsoConnections := make(map[string]datastore.Connection, len(dso))
+	for _, ds := range dso {
+		dsoConnection, err := datastore.NewStorageConnection(ctx, r.Client, ds.DataStore)
+		if err != nil {
+			log.Error(err, "cannot generate the DataStoreOverride connection for the given instance")
+
+			return ctrl.Result{}, err
+		}
+		defer dsoConnection.Close()
+
+		dsoConnections[ds.Resource] = dsoConnection
+	}
+
 	if markedToBeDeleted && controllerutil.ContainsFinalizer(tenantControlPlane, finalizers.DatastoreFinalizer) {
 		log.Info("marked for deletion, performing clean-up")
 
@@ -173,18 +204,21 @@ func (r *TenantControlPlaneReconciler) Reconcile(ctx context.Context, req ctrl.R
 	}
 
 	groupResourceBuilderConfiguration := GroupResourceBuilderConfiguration{
-		client:               r.Client,
-		log:                  log,
-		tcpReconcilerConfig:  r.Config,
-		tenantControlPlane:   *tenantControlPlane,
-		Connection:           dsConnection,
-		DataStore:            *ds,
-		KamajiNamespace:      r.KamajiNamespace,
-		KamajiServiceAccount: r.KamajiServiceAccount,
-		KamajiService:        r.KamajiService,
-		KamajiMigrateImage:   r.KamajiMigrateImage,
+		client:                        r.Client,
+		log:                           log,
+		tcpReconcilerConfig:           r.Config,
+		tenantControlPlane:            *tenantControlPlane,
+		Connection:                    dsConnection,
+		DataStore:                     *ds,
+		DataStoreOverrides:            dso,
+		DataStoreOverriedsConnections: dsoConnections,
+		KamajiNamespace:               r.KamajiNamespace,
+		KamajiServiceAccount:          r.KamajiServiceAccount,
+		KamajiService:                 r.KamajiService,
+		KamajiMigrateImage:            r.KamajiMigrateImage,
+		DiscoveryClient:               r.DiscoveryClient,
 	}
-	registeredResources := GetResources(groupResourceBuilderConfiguration)
+	registeredResources := GetResources(ctx, groupResourceBuilderConfiguration)
 
 	for _, resource := range registeredResources {
 		result, err := resources.Handle(ctx, resource, tenantControlPlane)
@@ -227,6 +261,23 @@ func (r *TenantControlPlaneReconciler) Reconcile(ctx context.Context, req ctrl.R
 
 	log.Info(fmt.Sprintf("%s has been reconciled", tenantControlPlane.GetName()))
 
+	// Set ObservedGeneration only on successful reconciliation completion.
+	// This follows Cluster API conventions where ObservedGeneration indicates
+	// the controller has fully processed the given generation.
+	if err := retry.RetryOnConflict(retry.DefaultRetry, func() error {
+		if getErr := r.Client.Get(ctx, req.NamespacedName, tenantControlPlane); getErr != nil {
+			return getErr
+		}
+
+		tenantControlPlane.Status.ObservedGeneration = tenantControlPlane.Generation
+
+		return r.Client.Status().Update(ctx, tenantControlPlane)
+	}); err != nil {
+		log.Error(err, "failed to update ObservedGeneration")
+
+		return ctrl.Result{}, err
+	}
+
 	return ctrl.Result{}, nil
 }
 
@@ -241,10 +292,10 @@ func (r *TenantControlPlaneReconciler) mutexSpec(obj client.Object) mutex.Spec {
 }
 
 // SetupWithManager sets up the controller with the Manager.
-func (r *TenantControlPlaneReconciler) SetupWithManager(mgr ctrl.Manager) error {
+func (r *TenantControlPlaneReconciler) SetupWithManager(ctx context.Context, mgr ctrl.Manager) error {
 	r.clock = clock.RealClock{}
 
-	return ctrl.NewControllerManagedBy(mgr).
+	controllerBuilder := ctrl.NewControllerManagedBy(mgr).
 		WatchesRawSource(source.Channel(r.CertificateChan, handler.Funcs{GenericFunc: func(_ context.Context, genericEvent event.TypedGenericEvent[client.Object], w workqueue.TypedRateLimitingInterface[reconcile.Request]) {
 			w.AddRateLimited(ctrl.Request{
 				NamespacedName: k8stypes.NamespacedName{
@@ -294,7 +345,20 @@ func (r *TenantControlPlaneReconciler) SetupWithManager(mgr ctrl.Manager) error
 			v, ok := labels["kamaji.clastix.io/component"]
 
 			return ok && v == "migrate"
-		}))).
+		})))
+
+	// Conditionally add Gateway API ownership if available
+	if utilities.AreGatewayResourcesAvailable(ctx, r.Client, r.DiscoveryClient) {
+		controllerBuilder = controllerBuilder.
+			Owns(&gatewayv1.HTTPRoute{}).
+			Owns(&gatewayv1.GRPCRoute{}).
+			Owns(&gatewayv1alpha2.TLSRoute{}).
+			Watches(&gatewayv1.Gateway{}, handler.EnqueueRequestsFromMapFunc(func(_ context.Context, object client.Object) []reconcile.Request {
+				return nil
+			}))
+	}
+
+	return controllerBuilder.
 		WithOptions(controller.Options{
 			MaxConcurrentReconciles: r.MaxConcurrentReconciles,
 		}).
@@ -333,8 +397,26 @@ func (r *TenantControlPlaneReconciler) dataStore(ctx context.Context, tenantCont
 
 	var ds kamajiv1alpha1.DataStore
 	if err := r.Client.Get(ctx, k8stypes.NamespacedName{Name: tenantControlPlane.Spec.DataStore}, &ds); err != nil {
-		return nil, errors.Wrap(err, "cannot retrieve *kamajiv1alpha.DataStore object")
+		return nil, fmt.Errorf("cannot retrieve *kamajiv1alpha.DataStore object: %w", err)
 	}
 
 	return &ds, nil
 }
+
+func (r *TenantControlPlaneReconciler) dataStoreOverride(ctx context.Context, tenantControlPlane *kamajiv1alpha1.TenantControlPlane) ([]controlplanebuilder.DataStoreOverrides, error) {
+	datastores := make([]controlplanebuilder.DataStoreOverrides, 0, len(tenantControlPlane.Spec.DataStoreOverrides))
+
+	for _, dso := range tenantControlPlane.Spec.DataStoreOverrides {
+		var ds kamajiv1alpha1.DataStore
+		if err := r.Client.Get(ctx, k8stypes.NamespacedName{Name: dso.DataStore}, &ds); err != nil {
+			return nil, fmt.Errorf("cannot retrieve *kamajiv1alpha.DataStore object: %w", err)
+		}
+		if ds.Spec.Driver != kamajiv1alpha1.EtcdDriver {
+			return nil, errors.New("DataStoreOverrides can only use ETCD driver")
+		}
+
+		datastores = append(datastores, controlplanebuilder.DataStoreOverrides{Resource: dso.Resource, DataStore: ds})
+	}
+
+	return datastores, nil
+}

docs/content/cluster-api/cluster-autoscaler.md

@@ -1,24 +1,24 @@
 # Cluster Autoscaler
 
-The [Cluster Autoscaler](https://github.com/kubernetes/autoscaler) is a tool that automatically adjusts the size of a Kubernetes cluster so that all pods have a place to run and there are no unneeded nodes.
+The [Cluster Autoscaler](https://github.com/kubernetes/autoscaler) is a tool that automatically adjusts the size of a Kubernetes cluster so that all pods have a place to run and no unneeded nodes remain.
 
-When pods are unschedulable because there are not enough resources, Cluster Autoscaler scales up the cluster. When nodes are underutilized, Cluster Autoscaler scales down the cluster.
+When pods are unschedulable because there are not enough resources, the Cluster Autoscaler scales up the cluster. When nodes are underutilized, the Cluster Autoscaler scales the cluster down.
 
 Cluster API supports the Cluster Autoscaler. See the [Cluster Autoscaler on Cluster API](https://cluster-api.sigs.k8s.io/tasks/automated-machine-management/autoscaling) for more information.
 
 ## Getting started with the Cluster Autoscaler on Kamaji
 
-Kamaji supports the Cluster Autoscaler through Cluster API. There are several way to run the Cluster autoscaler with Cluster API. In this guide, we're leveraging the unique features of Kamaji to run the Cluster Autoscaler as part of Hosted Control Plane.
+Kamaji supports the Cluster Autoscaler through Cluster API. There are several ways to run the Cluster Autoscaler with Cluster API. In this guide, we leverage the unique features of Kamaji to run the Cluster Autoscaler as part of the Hosted Control Plane.
 
-In other words, the Cluster Autoscaler is running as a pod in the Kamaji Management Cluster, side by side with the Tenant Control Plane pods, and connecting directly to the apiserver of the workload cluster, hiding sensitive data and information from the tenant: this can be done by mounting the kubeconfig of the tenant cluster in the Cluster Autoscaler pod.
+In other words, the Cluster Autoscaler runs as a pod in the Kamaji Management Cluster, alongside the Tenant Control Plane pods, and connects directly to the API server of the workload cluster. This approach hides sensitive data from the tenant. It works by mounting the kubeconfig of the tenant cluster into the Cluster Autoscaler pod.
 
 ### Create the workload cluster
 
-Create a workload cluster using the Kamaji Control Plane Provider and the Infrastructure Provider of choice. The following example creates a workload cluster using the vSphere Infrastructure Provider:
+Create a workload cluster using the Kamaji Control Plane Provider and the Infrastructure Provider of your choice. The following example creates a workload cluster using the vSphere Infrastructure Provider.
 
-The template file [`capi-kamaji-vsphere-autoscaler-template.yaml`](https://raw.githubusercontent.com/clastix/cluster-api-control-plane-provider-kamaji/master/templates/vsphere/capi-kamaji-vsphere-autoscaler-template.yaml) provides a full example of a cluster with autoscaler enabled. You can generate the cluster manifest using `clusterctl`.
+The template file [`capi-kamaji-vsphere-autoscaler-template.yaml`](https://raw.githubusercontent.com/clastix/cluster-api-control-plane-provider-kamaji/master/templates/vsphere/capi-kamaji-vsphere-autoscaler-template.yaml) provides a full example of a cluster with the autoscaler enabled. You can generate the cluster manifest using `clusterctl`.
 
-Before you need to list all the variables in the template file:
+Before doing so, list all the variables in the template file:
 
 ```bash
 cat capi-kamaji-vsphere-autoscaler-template.yaml | clusterctl generate yaml --list-variables
@@ -40,10 +40,10 @@ kubectl apply -f capi-kamaji-vsphere-cluster.yaml
 
 ### Install the Cluster Autoscaler
 
-Install the Cluster Autoscaler via Helm in the Management Cluster, in the same namespace where workload cluster is deployed.
+Install the Cluster Autoscaler via Helm in the Management Cluster, in the same namespace where the workload cluster is deployed.
 
-!!! info "Options for install Cluster Autoscaler"
-    Cluster Autoscaler works on a single cluster: it means every cluster must have its own Cluster Autoscaler instance. This could be solved by leveraging on Project Sveltos automations, by deploying a Cluster Autoscaler instance for each Kamaji Cluster API instance.
+!!! info "Options for installing the Cluster Autoscaler"
+    The Cluster Autoscaler works on a single cluster, meaning every cluster must have its own Cluster Autoscaler instance. This can be addressed by leveraging Project Sveltos automations to deploy a Cluster Autoscaler instance for each Kamaji Cluster API instance.
 
 ```bash
 helm repo add autoscaler https://kubernetes.github.io/autoscaler
@@ -56,9 +56,9 @@ helm upgrade --install ${CLUSTER_NAME}-autoscaler autoscaler/cluster-autoscaler
     --set clusterAPIMode=kubeconfig-incluster
 ```
 
-The `autoDiscovery.labels` values are used to pick dynamically clusters to autoscale.
+The `autoDiscovery.labels` values are used to dynamically select clusters to autoscale.
 
-Such labels must be set on the workload cluster, in the `Cluster` and `MachineDeployment` resources.
+These labels must be set on the workload cluster, specifically in the `Cluster` and `MachineDeployment` resources.
 
 ```yaml
 apiVersion: cluster.x-k8s.io/v1beta1
@@ -79,6 +79,9 @@ metadata:
     # Cluster Autoscaler annotations
     cluster.x-k8s.io/cluster-api-autoscaler-node-group-min-size: "0"
     cluster.x-k8s.io/cluster-api-autoscaler-node-group-max-size: "6"
+    capacity.cluster-autoscaler.kubernetes.io/cpu: "2"  # YMMV
+    capacity.cluster-autoscaler.kubernetes.io/memory: 4Gi  # YMMV
+    capacity.cluster-autoscaler.kubernetes.io/maxPods: "110"  # YMMV
   labels:
     cluster.x-k8s.io/cluster-name: sample
     # Cluster Autoscaler labels
@@ -90,10 +93,9 @@ metadata:
 # other Cluster API resources omitted for brevity
 ```
 
-
 ### Verify the Cluster Autoscaler
 
-To verify the Cluster Autoscaler is working as expected, you can deploy a workload in the Tenant cluster with some CPU requirements in order to simulate workload requiring resources.
+To verify that the Cluster Autoscaler is working as expected, deploy a workload in the Tenant cluster with specific CPU requirements to simulate resource demand.
 
 ```yaml
 apiVersion: apps/v1
@@ -122,7 +124,51 @@ spec:
             cpu: 500m
 ```
 
-Apply the workload to the Tenant cluster and simulate the load spike by increasing the replicas. The Cluster Autoscaler should scale up the cluster to accommodate the workload. Cooldown time must be configured properly on a cluster basis. 
+Apply the workload to the Tenant cluster and simulate a load spike by increasing the number of replicas. The Cluster Autoscaler should scale up the cluster to accommodate the workload. Cooldown times must be configured correctly on a per-cluster basis.
 
-!!! warning "Possible Resource Wasting"
-    With Cluster Autoscaler, new machines are automatically created in a very short time, ending up with some up-provisioning and potentially wasting resources. The official Cluster Autosclaler documentation must be understood to provide correct values according to the infrastructure and provisioning times.
+!!! warning "Possible Resource Wastage"
+    With the Cluster Autoscaler, new machines may be created very quickly, which can lead to over-provisioning and potentially wasted resources. The official Cluster Autoscaler documentation should be consulted to configure appropriate values based on your infrastructure and provisioning times.
+
+##  `ProvisioningRequest` support
+
+The [ProvisioningRequest](https://github.com/kubernetes/autoscaler/blob/cluster-autoscaler-1.34.1/cluster-autoscaler/proposals/provisioning-request.md) introduces a Kubernetes-native way for Cluster Autoscaler to request new capacity without talking directly to cloud provider APIs.
+Instead of embedding provider-specific logic, the autoscaler simply describes the capacity it needs, and an external provisioner decides how to create the required nodes.
+This makes scaling portable across clouds, on-prem platforms, and custom provisioning systems, while greatly reducing complexity inside the autoscaler.
+
+Once the cluster has been provisioned, install the `ProvisioningRequest` definition.
+
+```
+kubectl kamaji kubeconfig get capi-quickstart-kubevirt > /tmp/capi-quickstart-kubevirt
+KUBECONFIG=/tmp/capi-quickstart-kubevirt kubectl apply -f https://raw.githubusercontent.com/kubernetes/autoscaler/refs/tags/cluster-autoscaler-1.34.1/cluster-autoscaler/apis/config/crd/autoscaling.x-k8s.io_provisioningrequests.yaml
+```
+
+Proceed with the installation of Cluster Autoscaler by enabling some additional parameters: YMMV.
+
+```yaml
+cloudProvider: clusterapi
+autoDiscovery:
+  namespace: default
+  labels:
+  - autoscaling.x-k8s.io: enabled
+
+clusterAPIKubeconfigSecret: capi-quickstart-kubeconfig
+clusterAPIMode: kubeconfig-incluster
+
+extraArgs:
+  enable-provisioning-requests: true
+  kube-api-content-type: "application/json"
+  cloud-config: /etc/kubernetes/management/kubeconfig
+
+extraVolumeSecrets:
+  # Mount the management kubeconfig to talk with the management cluster:
+  # the in-rest configuration doesn't work
+  management-kubeconfig:
+    name: management-kubeconfig
+    mountPath: /etc/kubernetes/management
+    items:
+    - key: kubeconfig
+      path: kubeconfig
+```
+
+The Cluster Autoscaler should be up and running, enabled to connect to the management and tenant cluster API Server:
+follow the [official example](https://github.com/kubernetes/autoscaler/blob/cluster-autoscaler-1.34.1/cluster-autoscaler/FAQ.md#example-usage) from the repository to assess the `ProvisioningRequest` feature.

docs/content/cluster-api/cluster-class.md

@@ -1,104 +1,642 @@
-# Cluster Class
+# Cluster Class with Kamaji
 
-Kamaji supports **ClusterClass**, a simple way to create many clusters of a similar shape. This is useful for creating many clusters with the same configuration, such as a development cluster, a staging cluster, and a production cluster.
+`ClusterClass` is a Cluster API feature that enables template-based cluster creation. When combined with Kamaji's hosted control plane architecture, `ClusterClass` provides a powerful pattern for standardizing Kubernetes cluster deployments across multiple infrastructure providers while maintaining consistent control plane configurations.
 
 !!! warning "Experimental Feature"
-    ClusterClass is an experimental feature of Cluster API. As with any experimental features it should be used with caution as it may be unreliable. All experimental features are not subject to any compatibility or deprecation policy and are not yet recommended for production use.
+    ClusterClass is still an experimental feature of Cluster API. As with any experimental features it should be used with caution. Read more about ClusterClass in the [Cluster API documentation](https://cluster-api.sigs.k8s.io/tasks/experimental-features/cluster-class/).
 
-You can read more about ClusterClass in the [Cluster API documentation](https://cluster-api.sigs.k8s.io/tasks/experimental-features/cluster-class/).
+## Understanding Cluster Class
 
-## Enabling ClusterClass
+`ClusterClass` reduces configuration boilerplate by defining reusable cluster templates. Instead of creating individual resources for each cluster, you define a `ClusterClass` once and create multiple clusters from it with minimal configuration.
 
-To enable ClusterClass, you need to set `CLUSTER_TOPOLOGY` before running `clusterctl init`. This will enable the Cluster API feature gate for ClusterClass.
+With Kamaji, this pattern becomes even more powerful:
+- **Shared Control Plane Templates**: The same KamajiControlPlaneTemplate works across all infrastructure providers
+- **Infrastructure Flexibility**: Deploy worker nodes on vSphere, AWS, Azure, or any supported provider while maintaining consistent control planes
+- **Simplified Management**: Hosted control planes reduce the complexity of `ClusterClass` templates
+
+## Enabling Cluster Class
+
+To use `ClusterClass` with Kamaji, you need to enable the cluster topology feature gate before initializing the management cluster:
 
 ```bash
 export CLUSTER_TOPOLOGY=true
-clusterctl init --infrastructure vsphere --control-plane kamaji
+clusterctl init --control-plane kamaji --infrastructure vsphere
 ```
 
-## Creating a ClusterClass
+This will install:
+- Cluster API core components with `ClusterClass` support
+- Kamaji Control Plane Provider
+- Your chosen infrastructure provider (vSphere in this example)
 
-To create a ClusterClass, you need to create a `ClusterClass` custom resource. Here is an example of a `ClusterClass` that will create a cluster running control plane on the Kamaji Management Cluster and worker nodes on vSphere:
+Verify the installation:
+
+```bash
+kubectl get deployments -A | grep -E "capi|kamaji"
+```
+
+## Template Architecture with Kamaji
+
+A `ClusterClass` with Kamaji consists of four main components:
+
+1. Control Plane Template (KamajiControlPlaneTemplate): Defines the hosted control plane configuration that remains consistent across infrastructure providers.
+
+2. Infrastructure Template (VSphereClusterTemplate): Provider-specific infrastructure configuration for the cluster.
+
+3. Bootstrap Template (KubeadmConfigTemplate): Node initialization configuration that works across providers.
+
+4. Machine Template (VSphereMachineTemplate): Provider-specific machine configuration for worker nodes.
+
+Here's how these components relate in a `ClusterClass`:
 
 ```yaml
 apiVersion: cluster.x-k8s.io/v1beta1
 kind: ClusterClass
 metadata:
-  name: kamaji-clusterclass
+  name: kamaji-vsphere-class
 spec:
-  controlPlane:
-    ref:
-      apiVersion: controlplane.cluster.x-k8s.io/v1alpha1
-      kind: KamajiControlPlaneTemplate
-      name: kamaji-clusterclass-kamaji-control-plane-template
+  # Infrastructure provider template
   infrastructure:
     ref:
       apiVersion: infrastructure.cluster.x-k8s.io/v1beta1
       kind: VSphereClusterTemplate
-      name: kamaji-clusterclass-vsphere-cluster-template
+      name: vsphere-cluster-template
+  
+  # Kamaji control plane template - reusable across providers
+  controlPlane:
+    ref:
+      apiVersion: controlplane.cluster.x-k8s.io/v1alpha1
+      kind: KamajiControlPlaneTemplate
+      name: kamaji-control-plane-template
+    
+  # Worker configuration
   workers:
     machineDeployments:
-    - class: kamaji-clusterclass
+    - class: default-worker
       template:
         bootstrap:
           ref:
             apiVersion: bootstrap.cluster.x-k8s.io/v1beta1
             kind: KubeadmConfigTemplate
-            name: kamaji-clusterclass-kubeadm-config-template
+            name: worker-bootstrap-template
         infrastructure:
           ref:
             apiVersion: infrastructure.cluster.x-k8s.io/v1beta1
             kind: VSphereMachineTemplate
-            name: kamaji-clusterclass-vsphere-machine-template
-
-# other resources omitted for brevity ...
+            name: vsphere-worker-template
 ```
 
-The template file [`capi-kamaji-vsphere-class-template.yaml`](https://raw.githubusercontent.com/clastix/cluster-api-control-plane-provider-kamaji/master/templates/vsphere/capi-kamaji-vsphere-class-template.yaml) provides a full example of a ClusterClass for vSphere. You can generate a ClusterClass manifest using `clusterctl`.
+The key advantage: the KamajiControlPlaneTemplate and KubeadmConfigTemplate can be shared across different infrastructure providers, while only the infrastructure-specific templates need to change.
 
-Before you need to list all the variables in the template file:
+## Creating a Cluster Class
 
-```bash
-cat capi-kamaji-vsphere-class-template.yaml | clusterctl generate yaml --list-variables
+Let's create a `ClusterClass` for vSphere with Kamaji. First, define the shared templates:
+
+### KamajiControlPlaneTemplate
+
+This template defines the hosted control plane configuration:
+
+```yaml
+apiVersion: controlplane.cluster.x-k8s.io/v1alpha1
+kind: KamajiControlPlaneTemplate
+metadata:
+  name: kamaji-controlplane
+  namespace: capi-templates-vsphere
+spec:
+  template:
+    spec:
+      dataStoreName: "default"  # Default datastore for etcd
+      
+      network:
+        serviceType: LoadBalancer
+        serviceAddress: ""
+        certSANs: []
+        
+      addons:
+        coreDNS: {}
+        kubeProxy: {}
+        konnectivity: {}
+
+      apiServer:
+        extraArgs: []
+        resources:
+          requests: {}
+      controllerManager:
+        extraArgs: []
+        resources:
+          requests: {}
+      scheduler:
+        extraArgs: []
+        resources:
+          requests: {}
+            
+      kubelet:
+        cgroupfs: systemd
+        preferredAddressTypes:
+        - InternalIP
+        
+      registry: "registry.k8s.io"
 ```
 
-Fill them with the desired values and generate the manifest:
+### KubeadmConfigTemplate
 
-```bash
-clusterctl generate yaml \
-    --from capi-kamaji-vsphere-class-template.yaml \
-    > capi-kamaji-vsphere-class.yaml
+This bootstrap template configures worker nodes:
+
+```yaml
+apiVersion: bootstrap.cluster.x-k8s.io/v1beta1
+kind: KubeadmConfigTemplate
+metadata:
+  name: worker-bootstrap-template
+spec:
+  template:
+    spec:
+    
+      # Configuration for kubeadm join
+      joinConfiguration:
+        discovery: {}
+        nodeRegistration:
+          criSocket: /var/run/containerd/containerd.sock
+          imagePullPolicy: IfNotPresent
+          name: '{{ local_hostname }}'
+          kubeletExtraArgs:
+            cloud-provider: external
+            node-ip: "{{ ds.meta_data.local_ipv4 }}"       
+
+      # Commands to run before kubeadm join
+      preKubeadmCommands:
+      - hostnamectl set-hostname "{{ ds.meta_data.hostname }}"
+      - echo "127.0.0.1 {{ ds.meta_data.hostname }}" >> /etc/hosts
+      
+      # Commands to run after kubeadm join
+      postKubeadmCommands: []
+
+      # Users to create on worker nodes
+      users: []
 ```
 
-Apply the generated manifest to create the ClusterClass:
+### VSphereClusterTemplate
 
-```bash
-kubectl apply -f capi-kamaji-vsphere-class.yaml
+Infrastructure-specific template for vSphere:
+
+```yaml
+apiVersion: infrastructure.cluster.x-k8s.io/v1beta1
+kind: VSphereClusterTemplate
+metadata:
+  name: vsphere
+  namespace: capi-templates-vsphere
+spec:
+  template:
+    spec:
+      server: "vcenter.sample.com"  # vCenter server address
+      thumbprint: ""                # vCenter certificate thumbprint
+      
+      identityRef:
+        kind: VSphereClusterIdentity  
+        name: "vsphere-cluster-identity"
+      
+      failureDomainSelector: {} 
+      clusterModules: []
 ```
 
-## Creating a Cluster from a ClusterClass
+### VSphereMachineTemplate
 
-Once a ClusterClass is created, you can create a Cluster using the ClusterClass. Here is an example of a Cluster that uses the `kamaji-clusterclass`:
+Machine template for vSphere workers:
+
+```yaml
+apiVersion: infrastructure.cluster.x-k8s.io/v1beta1
+kind: VSphereMachineTemplate
+metadata:
+  name: vsphere-vm-base
+  namespace: capi-templates-vsphere
+spec:
+  template:
+    spec:
+      # Resources will be patched by ClusterClass based on variables
+      # numCPUs, memoryMiB, diskGiB are dynamically set
+      
+      # Infrastructure defaults - will be patched by ClusterClass
+      server: "vcenter.sample.com"
+      datacenter: "datacenter"
+      datastore: "datastore"
+      resourcePool: "Resources"
+      folder: "vm-folder"
+      template: "ubuntu-2404-kube-v1.32.0"
+      storagePolicyName: ""
+      thumbprint: ""
+      
+      # Network configuration (IPAM by default)
+      network:
+        devices:
+        - networkName: "k8s-network"
+          dhcp4: false
+          addressesFromPools:
+          - apiGroup: ipam.cluster.x-k8s.io
+            kind: InClusterIPPool
+            name: "{{ .builtin.cluster.name }}"  # Uses cluster name
+```
+
+### Variables and Patching in Cluster Class
+
+`ClusterClass` becomes powerful through its variable system and JSON patching capabilities. This allows the same templates to be customized for different use cases without duplicating YAML.
+
+#### Variable System
+
+Variables in `ClusterClass` define the parameters users can customize when creating clusters. Each variable has:
+
+- **Schema Definition**: OpenAPI v3 schema that validates input
+- **Required/Optional**: Whether the variable must be provided
+- **Default Values**: Fallback values when not specified
+- **Type Constraints**: Data types, ranges, and enum values
+
+Here's how variables work in practice:
+
+**Control Plane Variables:**
+```yaml
+variables:
+- name: kamajiControlPlane
+  required: true
+  schema:
+    openAPIV3Schema:
+      type: object
+      properties:
+        dataStoreName:
+          type: string
+          description: "Datastore name for etcd"
+          default: "default"
+        network:
+          type: object
+          properties:
+            serviceType:
+              type: string
+              enum: ["ClusterIP", "NodePort", "LoadBalancer"]
+              default: "LoadBalancer"
+            serviceAddress:
+              type: string
+              description: "Pre-assigned VIP address"
+```
+
+**Machine Resource Variables:**
+```yaml
+- name: machineSpecs
+  required: true
+  schema:
+    openAPIV3Schema:
+      type: object
+      properties:
+        numCPUs:
+          type: integer
+          minimum: 2
+          maximum: 64
+          default: 4
+        memoryMiB:
+          type: integer
+          minimum: 4096
+          maximum: 131072
+          default: 8192
+        diskGiB:
+          type: integer
+          minimum: 40
+          maximum: 2048
+          default: 100
+```
+
+#### JSON Patching System
+
+Patches apply variable values to the base templates at cluster creation time. This enables the same template to serve different configurations.
+
+**Control Plane Patching:**
+```yaml
+patches:
+- name: controlPlaneConfig
+  definitions:
+  - selector:
+      apiVersion: controlplane.cluster.x-k8s.io/v1alpha1
+      kind: KamajiControlPlaneTemplate
+      matchResources:
+        controlPlane: true
+    jsonPatches:
+    - op: replace
+      path: /spec/template/spec/dataStoreName
+      valueFrom:
+        variable: kamajiControlPlane.dataStoreName
+    - op: replace
+      path: /spec/template/spec/network/serviceType
+      valueFrom:
+        variable: kamajiControlPlane.network.serviceType
+```
+
+**Machine Resource Patching:**
+```yaml
+- name: machineResources
+  definitions:
+  - selector:
+      apiVersion: infrastructure.cluster.x-k8s.io/v1beta1
+      kind: VSphereMachineTemplate
+      matchResources:
+        machineDeploymentClass:
+          names: ["default-worker"]
+    jsonPatches:
+    - op: add  # Resources are not in base template
+      path: /spec/template/spec/numCPUs
+      valueFrom:
+        variable: machineSpecs.numCPUs
+    - op: add
+      path: /spec/template/spec/memoryMiB
+      valueFrom:
+        variable: machineSpecs.memoryMiB
+```
+
+#### Advanced Patching Patterns
+
+**Conditional Patching:**
+```yaml
+- name: optionalVIP
+  definitions:
+  - selector:
+      apiVersion: controlplane.cluster.x-k8s.io/v1alpha1
+      kind: KamajiControlPlaneTemplate
+    jsonPatches:
+    - op: replace
+      path: /spec/template/spec/network/serviceAddress
+      valueFrom:
+        variable: kamajiControlPlane.network.serviceAddress
+      # Only applies if serviceAddress is not empty
+      enabledIf: "{{ ne .kamajiControlPlane.network.serviceAddress \"\" }}"
+```
+
+**Infrastructure Patching:**
+```yaml
+- name: infrastructureConfig
+  definitions:
+  - selector:
+      apiVersion: infrastructure.cluster.x-k8s.io/v1beta1
+      kind: VSphereMachineTemplate
+    jsonPatches:
+    - op: replace
+      path: /spec/template/spec/datacenter
+      valueFrom:
+        variable: infrastructure.datacenter
+    - op: replace
+      path: /spec/template/spec/datastore
+      valueFrom:
+        variable: infrastructure.datastore
+    - op: replace
+      path: /spec/template/spec/template
+      valueFrom:
+        variable: infrastructure.vmTemplate
+```
+
+### Complete Cluster Class with Variables
+
+For a comprehensive example with all variables and patches configured, see the [vsphere-kamaji-clusterclass.yaml](https://raw.githubusercontent.com/clastix/cluster-api-control-plane-provider-kamaji/master/templates/vsphere/capi-kamaji-vsphere-class-template.yaml) template.
+
+## Creating a Cluster from Cluster Class
+
+With the `ClusterClass` defined, creating a cluster becomes remarkably simple:
 
 ```yaml
 apiVersion: cluster.x-k8s.io/v1beta1
 kind: Cluster
 metadata:
-  name: sample
+  name: my-cluster
+  namespace: default
 spec:
+  # Network configuration defined at cluster level
+  clusterNetwork:
+    pods:
+      cidrBlocks: ["10.244.0.0/16"]
+    services:
+      cidrBlocks: ["10.96.0.0/12"]
+    serviceDomain: "cluster.local"
+  
   topology:
-    class: kamaji-clusterclass
-    classNamespace: capi-clusterclass
-    version: v1.31.0
+    class: vsphere-standard
+    classNamespace: capi-templates-vsphere
+    version: v1.32.0
+    
     controlPlane:
       replicas: 2
+    
     workers:
       machineDeployments:
-      - class: kamaji-clusterclass
-        name: md-sample
+      - class: default-worker
+        name: worker-nodes
         replicas: 3
-
-# other resources omitted for brevity ...
+    
+    variables:
+    - name: kamajiControlPlane
+      value:
+        dataStoreName: "etcd"
+        network:
+          serviceType: "LoadBalancer"
+          serviceAddress: ""  # Auto-assigned if empty
+    
+    - name: machineSpecs
+      value:
+        numCPUs: 8
+        memoryMiB: 16384
+        diskGiB: 60
+    
+    - name: infrastructure
+      value:
+        vmTemplate: "ubuntu-2404-kube-v1.32.0"
+        datacenter: "K8s-TI-dtc"
+        datastore: "K8s-N01td-01"
+        resourcePool: "rp-kamaji-dev"
+        folder: "my-cluster-vms"
+    
+    - name: networking
+      value:
+        networkName: "VM-K8s-TI-cpmgmt"
+        nameservers: ["8.8.8.8", "1.1.1.1"]
+        dhcp4: false  # Using IPAM
 ```
 
-Always refer to the [Cluster API documentation](https://cluster-api.sigs.k8s.io/tasks/experimental-features/cluster-class/) for the most up-to-date information on ClusterClass.
+Create the cluster:
+
+```bash
+kubectl apply -f my-cluster.yaml
+```
+
+Monitor cluster creation:
+
+```bash
+clusterctl describe cluster my-cluster
+kubectl get cluster,kamajicontrolplane,machinedeployment -n default
+```
+
+With this approach, the same `KamajiControlPlaneTemplate` and `KubeadmConfigTemplate` can be reused when creating `ClusterClasses` for AWS, Azure, or any other provider. Only the infrastructure-specific templates need to change.
+
+## Cross-Provider Template Reuse
+
+One of Kamaji's key advantages with `ClusterClass` is template modularity across providers. Here's how to leverage this:
+
+### Shared Templates Repository
+
+Create a namespace for shared templates:
+
+```bash
+kubectl create namespace cluster-templates
+```
+
+Deploy shared Kamaji and bootstrap templates once:
+
+```bash
+kubectl apply -n cluster-templates -f kamaji-controlplane-template.yaml
+kubectl apply -n cluster-templates -f kubeadm-config-template.yaml
+```
+
+### Provider-Specific Cluster Classes
+
+For each infrastructure provider, create a `ClusterClass` that references the shared templates:
+
+#### AWS Cluster Class
+
+```yaml
+apiVersion: cluster.x-k8s.io/v1beta1
+kind: ClusterClass
+metadata:
+  name: kamaji-aws-class
+spec:
+  controlPlane:
+    ref:
+      apiVersion: controlplane.cluster.x-k8s.io/v1alpha1
+      kind: KamajiControlPlaneTemplate
+      name: kamaji-controlplane
+      namespace: cluster-templates  # Shared template
+  
+  infrastructure:
+    ref:
+      apiVersion: infrastructure.cluster.x-k8s.io/v1beta2
+      kind: AWSClusterTemplate
+      name: aws-cluster-template  # AWS-specific
+  
+  workers:
+    machineDeployments:
+    - class: default-worker
+      template:
+        bootstrap:
+          ref:
+            apiVersion: bootstrap.cluster.x-k8s.io/v1beta1
+            kind: KubeadmConfigTemplate
+            name: kubeadm
+            namespace: cluster-templates  # Shared template
+        infrastructure:
+          ref:
+            apiVersion: infrastructure.cluster.x-k8s.io/v1beta2
+            kind: AWSMachineTemplate
+            name: aws-worker-template  # AWS-specific
+```
+
+### Azure Cluster Class
+
+```yaml
+apiVersion: cluster.x-k8s.io/v1beta1
+kind: ClusterClass
+metadata:
+  name: kamaji-azure-class
+spec:
+  controlPlane:
+    ref:
+      apiVersion: controlplane.cluster.x-k8s.io/v1alpha1
+      kind: KamajiControlPlaneTemplate
+      name: kamaji-control-plane-template
+      namespace: cluster-templates  # Same shared template
+  
+  infrastructure:
+    ref:
+      apiVersion: infrastructure.cluster.x-k8s.io/v1beta1
+      kind: AzureClusterTemplate
+      name: azure-cluster-template  # Azure-specific
+  
+  workers:
+    machineDeployments:
+    - class: default-worker
+      template:
+        bootstrap:
+          ref:
+            apiVersion: bootstrap.cluster.x-k8s.io/v1beta1
+            kind: KubeadmConfigTemplate
+            name: worker-bootstrap-template
+            namespace: cluster-templates  # Same shared template
+        infrastructure:
+          ref:
+            apiVersion: infrastructure.cluster.x-k8s.io/v1beta1
+            kind: AzureMachineTemplate
+            name: azure-worker-template  # Azure-specific
+```
+
+## Managing Cluster Class Lifecycle
+
+### Listing Available Cluster Classes
+
+```bash
+kubectl get clusterclasses -A
+```
+
+### Viewing Cluster Class Details
+
+```bash
+kubectl describe clusterclass vsphere-standard -n capi-templates-vsphere
+```
+
+### Updating a Cluster Class
+
+A `ClusterClass` update affects only new clusters. Existing clusters continue using their original configuration:
+
+```bash
+kubectl edit clusterclass vsphere-standard -n capi-templates-vsphere
+```
+
+### Deleting Clusters Created from Cluster Class
+
+Always delete clusters before removing the `ClusterClass`:
+
+```bash
+# Delete the cluster
+kubectl delete cluster my-cluster
+
+# Wait for cleanup
+kubectl wait --for=delete cluster/my-cluster --timeout=10m
+
+# Then safe to delete ClusterClass if no longer needed
+kubectl delete clusterclass vsphere-standard -n capi-templates-vsphere
+```
+
+## Template Versioning Strategies
+
+When managing `ClusterClasses` across environments, consider these versioning approaches:
+
+### Semantic Versioning in Names
+
+```yaml
+metadata:
+  name: vsphere-standard-v1-2-0
+  namespace: capi-templates-vsphere
+```
+
+### Using Labels for Version Tracking
+
+```yaml
+metadata:
+  name: vsphere-standard
+  namespace: capi-templates-vsphere
+  labels:
+    version: "1.2.0"
+    stability: "stable"
+    tier: "standard"
+```
+
+### Namespace Separation
+
+```bash
+kubectl create namespace clusterclass-v1
+kubectl create namespace clusterclass-v2
+```
+
+This enables gradual migration between `ClusterClass` versions while maintaining compatibility.
+
+## Further Reading
+
+  - [Cluster API ClusterClass Documentation](https://cluster-api.sigs.k8s.io/tasks/experimental-features/cluster-class/)
+  - [Kamaji Control Plane Provider Reference](https://doc.crds.dev/github.com/clastix/cluster-api-control-plane-provider-kamaji)
+  - [CAPI Provider Integration](https://github.com/clastix/cluster-api-control-plane-provider-kamaji)

docs/content/cluster-api/proxmox-infra-provider.md

@@ -14,15 +14,18 @@ To use the Proxmox Cluster API provider, you must connect and authenticate to a
 
 ```bash
 # The Proxmox VE host
-export PROXMOX_URL: "https://pve.example:8006"
+export PROXMOX_URL="https://pve.example:8006"
 
 # The Proxmox VE TokenID for authentication
-export PROXMOX_TOKEN: "clastix@pam!capi"
+export PROXMOX_TOKEN='clastix@pam!capi'
 
 # The secret associated with the TokenID
-export PROXMOX_SECRET: "REDACTED"
+export PROXMOX_SECRET="REDACTED"
 ```
 
+!!! warning "Env escaping "
+    Pay attention to escape special characters, such as `\` and `!`
+
 Install the Infrastructure Provider:
 
 ```bash
@@ -72,6 +75,14 @@ Set the following environment variables to configure the workload machines:
 # Node Configuration
 export SSH_USER="clastix"
 export SSH_AUTHORIZED_KEY="ssh-rsa AAAAB3Nz ..."
+export NODE_LABELS="datacenter=us-west,instance-type=large"
+export NODE_TAINTS="environment=production:PreferNoSchedule"
+
+# You can add additional cloud-init configuration to further customize
+# the worker nodes by setting the CLOUD_INIT_CONFIG environment variable:
+export CLOUD_INIT_CONFIG="#cloud-config package_update: true packages: - net-tools"
+
+# Number of worker nodes
 export NODE_REPLICAS=2
 
 # Resource Configuration
@@ -85,6 +96,7 @@ export BOOT_VOLUME_DEVICE="scsi0"
 export BOOT_VOLUME_SIZE=20
 export FILE_STORAGE_FORMAT="qcow2"
 export STORAGE_NODE="local"
+export POOL_NAME="sample-pool"
 ```
 
 Use the following command to generate a cluster manifest based on the [`capi-kamaji-proxmox-template.yaml`](https://raw.githubusercontent.com/clastix/cluster-api-control-plane-provider-kamaji/master/templates/proxmox/capi-kamaji-proxmox-template.yaml) template file:
@@ -95,38 +107,8 @@ clusterctl generate cluster $CLUSTER_NAME \
     > capi-kamaji-proxmox-cluster.yaml
 ```
 
-### Additional cloud-init configuration
-
-Cluster API requires machine templates based on `cloud-init`. You can add additional `cloud-init` configuration to further customize the worker nodes by including an additional `cloud-init` file in the `KubeadmConfigTemplate`:
-
-```yaml
-kind: KubeadmConfigTemplate
-apiVersion: bootstrap.cluster.x-k8s.io/v1beta1
-metadata:
-  name: ${CLUSTER_NAME}-md-0
-spec:
-  template:
-    spec:
-      files:
-      - path: "/etc/cloud/cloud.cfg.d/99-custom.cfg"
-        content: "${CLOUD_INIT_CONFIG:-}"
-        owner: "root:root"
-        permissions: "0644"
-```
-
-You can then set the `CLOUD_INIT_CONFIG` environment variable to include the additional configuration:
-
-```bash
-export CLOUD_INIT_CONFIG="#cloud-config package_update: true packages: - net-tools"
-```
-
-and include it in the `clusterctl generate cluster` command:
-
-```bash
-clusterctl generate cluster $CLUSTER_NAME \
-    --from capi-kamaji-proxmox-template.yaml \
-    > capi-kamaji-proxmox-cluster.yaml
-```
+!!! warning "Customize the Template"
+    Before to generate cluster manifest, review and edit the template `capi-kamaji-proxmox-template.yaml` to customize.
 
 ### Apply the Cluster Manifest
 

docs/content/concepts/index.md

@@ -27,7 +27,7 @@ Kamaji is an open source Kubernetes Operator that transforms any Kubernetes clus
   Kamaji leverages Kubernetes Custom Resource Definitions (CRDs) to provide a fully declarative approach to managing control planes, datastores, and other resources.
 
 - **CNCF Compliance:**  
-  Kamaji uses upstream, unmodified Kubernetes components and kubeadm for control plane setup, ensuring that all Tenant Clusters are [CNCF Certified Kubernetes](https://www.cncf.io/certification/software-conformance/) and compatible with standard Kubernetes tooling.
+  Kamaji uses upstream, unmodified Kubernetes components and kubeadm for control plane setup, ensuring that all Tenant Clusters follow [CNCF Certified Kubernetes Software Conformance](https://www.cncf.io/certification/software-conformance/) and are compatible with standard Kubernetes tooling.
 
 ## Extensibility and Integrations
 
@@ -54,4 +54,4 @@ Explore the following concepts to understand how Kamaji works under the hood:
 - [Tenant Worker Nodes](tenant-worker-nodes.md)
 - [Konnectivity](konnectivity.md)
 
-Kamaji’s architecture is designed for flexibility, scalability, and operational simplicity, making it an ideal solution for organizations managing multiple Kubernetes clusters at scale.
+Kamaji’s architecture is designed for flexibility, scalability, and operational simplicity, making it an ideal solution for organizations managing multiple Kubernetes clusters at scale.

docs/content/concepts/konnectivity.md

@@ -1,14 +1,15 @@
 # Konnectivity
 
-In traditional Kubernetes deployments, the control plane components need to communicate directly with worker nodes for various operations
-like executing commands in pods, retrieving logs, or managing port forwards.
+In traditional Kubernetes deployments, the control plane components need to communicate directly with worker nodes for various operations like:
+executing commands in pods, retrieving logs, or managing port forwards.
+
 However, in many real-world environments, especially those spanning multiple networks or cloud providers,
 direct communication isn't always possible or desirable. This is where Konnectivity comes in.
 
 ## Understanding Konnectivity in Kamaji
 
 Kamaji integrates [Konnectivity](https://kubernetes.io/docs/concepts/architecture/control-plane-node-communication/) as a core component of its architecture.
-Each Tenant Control Plane pod includes a konnectivity-server running as a sidecar container,
+Each Tenant Control Plane pod includes a `konnectivity-server` running as a sidecar container,
 which establishes and maintains secure tunnels with agents running on the worker nodes.
 
 This design ensures reliable communication even in complex network environments.
@@ -86,3 +87,68 @@ Available strategies are the following:
 
 By integrating Konnectivity as a core feature, Kamaji ensures that your Tenant Clusters can operate reliably and securely across any network topology,
 making it easier to build and manage distributed Kubernetes environments at scale.
+
+## Version compatibility between API Server and Konnectivity
+
+In recent Kubernetes releases, Konnectivity has aligned its versioning with the Kubernetes API Server.
+
+This means that for example:
+- Kubernetes v1.34.0 pairs with Konnectivity v0.34.0
+- Kubernetes v1.33.0 pairs with Konnectivity v0.33.0
+
+Within Kamaji, this version matching happens automatically.
+
+The field `TenantControlPlane.spec.addons.konnectivity` determines the proper Konnectivity version for both the server and the agent,
+ensuring compatibility with the tenant control plane's API Server version.
+
+!!! warning "Konnectivity images could not be available!"
+    For the most recent Kubernetes releases, the corresponding Konnectivity image artifacts _may not yet be built and published_ by the upstream community.
+    In these cases, you may need to override the automatic pairing and configure a previous Konnectivity version that is available.
+
+You can still have a version skew between the Kubernetes API Server for the given Tenant Control Plane, and the Konnectivity components.
+
+```yaml
+apiVersion: kamaji.clastix.io/v1alpha1
+kind: TenantControlPlane
+metadata:
+  name: konnectivity
+  namespace: default
+spec:
+  addons:
+    coreDNS: {}
+    konnectivity:
+      agent:
+        hostNetwork: false
+        image: registry.k8s.io/kas-network-proxy/proxy-agent
+        mode: DaemonSet
+        tolerations:
+        - key: CriticalAddonsOnly
+          operator: Exists
+        version: v0.33.0
+      server:
+        image: registry.k8s.io/kas-network-proxy/proxy-server
+        port: 8132
+        version: v0.33.0
+    kubeProxy: {}
+  controlPlane:
+    deployment:
+      replicas: 2
+    service:
+      serviceType: LoadBalancer
+  dataStore: etcd-kamaji-etcd
+  kubernetes:
+    kubelet:
+      cgroupfs: systemd
+      preferredAddressTypes:
+      - InternalIP
+      - ExternalIP
+      - Hostname
+    version: v1.34.0
+  networkProfile:
+    clusterDomain: cluster.local
+    dnsServiceIPs:
+    - 10.96.0.10
+    podCidr: 10.244.0.0/16
+    port: 6443
+    serviceCidr: 10.96.0.0/16
+```

docs/content/getting-started/kamaji-aws.md

@@ -166,6 +166,17 @@ helm repo update
 helm install kamaji clastix/kamaji -n kamaji-system --create-namespace --version 0.0.0+latest
 ```
 
+!!! note "Alternative: Two-Step Installation"
+    The kamaji chart includes CRDs. For separate CRD management (GitOps, policy requirements), install CRDs first:
+
+```bash
+# Step 1: Install CRDs
+helm install kamaji-crds clastix/kamaji-crds -n kamaji-system --create-namespace --version 0.0.0+latest
+
+# Step 2: Install Kamaji operator
+helm install kamaji clastix/kamaji -n kamaji-system --version 0.0.0+latest
+```
+
 ## Create Tenant Cluster
 
 Now that our management cluster is up and running, we can create a Tenant Cluster. A Tenant Cluster is a Kubernetes cluster that is managed by Kamaji.
@@ -359,7 +370,7 @@ cat <<EOF >> worker-user-data.sh
 $JOIN_CMD
 EOF
 
-aws ec2 run-instances --image-id $WORKER_AMI --instance-type "t2.medium" --user-data $(cat worker-user-data.sh | base64 -w0) --network-interfaces '{"SubnetId":'"'${KAMAJI_PRIVATE_SUBNET_ID}'"',"AssociatePublicIpAddress":false,"DeviceIndex":0,"Groups":["<REPLACE_WITH_SG>"]}' --count "1" 
+aws ec2 run-instances --image-id $WORKER_AMI --instance-type "t2.medium" --user-data $(cat worker-user-data.sh | base64 -w0) --network-interfaces '[{"SubnetId":'"'${KAMAJI_PRIVATE_SUBNET_ID}'"',"AssociatePublicIpAddress":false,"DeviceIndex":0,"Groups":["<REPLACE_WITH_SG>"]}]' --count "1"
 ```
 
 We have used user data to run the `kubeadm join` command on the instance boot. This will make sure that the worker node will join the cluster automatically.

docs/content/getting-started/kamaji-generic.md

@@ -86,6 +86,17 @@ helm install kamaji clastix/kamaji \
     --set image.tag=latest
 ```
 
+!!! note "Alternative: Two-Step Installation"
+    The kamaji chart includes CRDs. For separate CRD management (GitOps, policy requirements), install CRDs first
+
+```bash
+# Step 1: Install CRDs
+helm install kamaji-crds clastix/kamaji-crds -n kamaji-system --create-namespace --version 0.0.0+latest
+
+# Step 2: Install Kamaji operator
+helm install kamaji clastix/kamaji -n kamaji-system --version 0.0.0+latest
+```
+
 After installation, verify that Kamaji and its components are running:
 
 ```bash
@@ -160,9 +171,6 @@ spec:
     konnectivity:
       server:
         port: ${TENANT_PROXY_PORT}
-        resources: {}
-      client:
-        resources: {}
 EOF
 
 kubectl -n ${TENANT_NAMESPACE} apply -f ${TENANT_NAMESPACE}-${TENANT_NAME}-tcp.yaml

docs/content/getting-started/kamaji-kind.md

@@ -32,16 +32,18 @@ Kamaji has a dependency on Cert Manager, as it uses dynamic admission control, v
 Add the Bitnami Repo to the Helm Manager.
 
 ```
-helm repo add bitnami https://charts.bitnami.com/bitnami
+helm repo add jetstack https://charts.jetstack.io
+helm repo update
 ```
 
 Install Cert Manager using Helm
 
 ```
-helm upgrade --install cert-manager bitnami/cert-manager \
-  --namespace certmanager-system \
+helm install \
+  cert-manager jetstack/cert-manager \
+  --namespace cert-manager \
   --create-namespace \
-  --set "installCRDs=true"
+  --set installCRDs=true
 ```
 
 This will install cert-manager to the cluster. You can watch the progress of the installation on the cluster using the command
@@ -55,7 +57,7 @@ kubectl get pods -Aw
 MetalLB is used in order to dynamically assign IP addresses to the components, and also define custom IP Address Pools. Install MetalLb using the `kubectl` command for apply the manifest:
 
 ```
-kubectl apply -f https://raw.githubusercontent.com/metallb/metallb/v0.13.7/config/manifests/metallb-native.yaml
+kubectl apply -f https://raw.githubusercontent.com/metallb/metallb/v0.15.3/config/manifests/metallb-native.yaml
 ```
 
 This will install MetalLb onto the cluster with all the necessary resources.
@@ -65,7 +67,11 @@ This will install MetalLb onto the cluster with all the necessary resources.
 Extract the Gateway IP of the network Kind is running on.
 
 ```
+# docker
 GW_IP=$(docker network inspect -f '{{range .IPAM.Config}}{{.Gateway}}{{end}}' kind)
+
+# podman
+GW_IP=$(podman network inspect kind --format '{{(index .Subnets 1).Gateway}}')
 ```
 
 Modify the IP Address, and create the resource to be added to the cluster to create the IP Address Pool

docs/content/guides/certs-lifecycle.md

@@ -41,7 +41,7 @@ k8s-133-scheduler-kubeconfig                    Opaque              1      3h45m
 ```
 
 Once this operation is performed, Kamaji will trigger a certificate renewal,
-reporting the rotation date time as the annotation `certs.kamaji.clastix.io/rotate` value.
+reporting the rotation date time as the annotation `certs.kamaji.clastix.io/rotate` value in the [RFC3339](https://pkg.go.dev/time#RFC3339) format.
 
 ```
 $: kubectl annotate secret -l kamaji.clastix.io/certificate_lifecycle_controller=x509 certs.kamaji.clastix.io/rotate=""
@@ -52,11 +52,11 @@ secret/k8s-133-front-proxy-client-certificate annotated
 secret/k8s-133-konnectivity-certificate annotated
 
 $: kubectl get secrets -l kamaji.clastix.io/certificate_lifecycle_controller=x509 -ojson | jq -r '.items[] | "\(.metadata.name) rotated at \(.metadata.annotations["certs.kamaji.clastix.io/rotate"])"'
-k8s-133-api-server-certificate rotated at 2025-07-15 15:15:08.842191367 +0200 CEST m=+325.785000014
-k8s-133-api-server-kubelet-client-certificate rotated at 2025-07-15 15:15:10.468139865 +0200 CEST m=+327.410948506
-k8s-133-datastore-certificate rotated at 2025-07-15 15:15:15.454468752 +0200 CEST m=+332.397277417
-k8s-133-front-proxy-client-certificate rotated at 2025-07-15 15:15:13.279920467 +0200 CEST m=+330.222729097
-k8s-133-konnectivity-certificate rotated at 2025-07-15 15:15:17.361431671 +0200 CEST m=+334.304240277
+k8s-133-api-server-certificate rotated at 2025-07-15T15:15:08Z02:00
+k8s-133-api-server-kubelet-client-certificate rotated at 2025-07-15T15:15:10Z0200
+k8s-133-datastore-certificate rotated at 2025-07-15T15:15:15Z0200
+k8s-133-front-proxy-client-certificate rotated at 2025-07-15T15:15:13Z0200
+k8s-133-konnectivity-certificate rotated at 2025-07-15T15:15:17Z0200
 ```
 
 You can notice the secrets have been automatically created back, as well as a TenantControlPlane rollout with the updated certificates.

docs/content/guides/datastore-overrides.md

@@ -0,0 +1,78 @@
+# Datastore Overrides
+
+Kamaji offers the possibility of having multiple ETCD clusters backing different resources of the k8s api server by configuring the [`--etcd-servers-overrides`](https://kubernetes.io/docs/reference/command-line-tools-reference/kube-apiserver/#:~:text=%2D%2Detcd%2Dservers%2Doverrides%20strings) flag. This feature can be useful for massive clusters to store resources with high churn in a dedicated ETCD cluster.
+
+## Install Datastores
+
+Create a self-signed cert-manager `ClusterIssuer`.
+```bash
+echo 'apiVersion: cert-manager.io/v1
+kind: ClusterIssuer
+metadata:
+  name: self-signed
+spec:
+  selfSigned: {}
+' | kubectl apply -f -
+```
+
+Install two Datastores, a primary and a secondary that will be used for `/events` resources.
+```bash
+ helm install etcd-primary clastix/kamaji-etcd -n kamaji-etcd --create-namespace \
+   --set selfSignedCertificates.enabled=false \
+   --set certManager.enabled=true \
+   --set certManager.issuerRef.kind=ClusterIssuer \
+   --set certManager.issuerRef.name=self-signed
+```
+
+For the secondary Datastore, use the cert-manager CA created by the `etcd-primary` helm release.
+```bash
+ helm install etcd-secondary clastix/kamaji-etcd -n kamaji-etcd --create-namespace \
+   --set selfSignedCertificates.enabled=false \
+   --set certManager.enabled=true \
+   --set certManager.ca.create=false \
+   --set certManager.ca.nameOverride=etcd-primary-kamaji-etcd-ca \
+   --set certManager.issuerRef.kind=ClusterIssuer \
+   --set certManager.issuerRef.name=self-signed
+```
+
+## Create a Tenant Control Plane
+
+Using the `spec.dataStoreOverrides` field, Datastores different from the one used in `spec.dataStore` can be used to store specific resources.
+
+```bash
+echo 'apiVersion: kamaji.clastix.io/v1alpha1
+kind: TenantControlPlane
+metadata:
+  name: k8s-133
+  labels:
+    tenant.clastix.io: k8s-133
+spec:
+  controlPlane:
+    deployment:
+      replicas: 2
+    service:
+      serviceType: LoadBalancer
+  kubernetes:
+    version: "v1.33.1"
+    kubelet:
+      cgroupfs: systemd
+  dataStore: etcd-primary-kamaji-etcd
+  dataStoreOverrides:
+    - resource: "/events" # Store events in the secondary ETCD
+      dataStore: etcd-secondary-kamaji-etcd
+  networkProfile:
+    port: 6443
+  addons:
+    coreDNS: {}
+    kubeProxy: {}
+    konnectivity:
+      server:
+        port: 8132
+      agent:
+        mode: DaemonSet
+' | k apply -f -
+```
+
+## Considerations
+
+Only built-in resources can be tagetted by `--etcd-servers-overrides`, it is currently not possible to target Custom Resources.

docs/content/guides/gateway-api.md

@@ -0,0 +1,213 @@
+# Gateway API Support
+
+Kamaji provides built-in support for the [Gateway API](https://gateway-api.sigs.k8s.io/), allowing you to expose Tenant Control Planes using TLSRoute resources with SNI-based routing. This enables hostname-based routing to multiple Tenant Control Planes through a single Gateway resource, reducing the need for dedicated LoadBalancer services.
+
+## Overview
+
+Gateway API support in Kamaji automatically creates and manages TLSRoute resources for your Tenant Control Planes. When you configure a Gateway for a Tenant Control Plane, Kamaji automatically creates TLSRoutes for the Control Plane API Server. If konnectivity is enabled, a separate TLSRoute is created for it. Both TLSRoutes use the same hostname and Gateway resource, but route to different ports(listeners) using port-based routing and semantic `sectionName` values.
+
+Therefore, the target `Gateway` resource must have right listener configurations (see the Gateway [example section](#gateway-resource-setup) below).
+
+
+## How It Works
+
+When you configure `spec.controlPlane.gateway` in a TenantControlPlane resource, Kamaji automatically:
+
+1. **Creates a TLSRoute for the control plane** that routes for port 6443 (or `spec.networkProfile.port`) with sectionName `"kube-apiserver"`
+2. **Creates a TLSRoute for Konnectivity** (if konnectivity addon is enabled) that routes for port 8132 (or `spec.addons.konnectivity.server.port`) with sectionName `"konnectivity-server"`
+
+Both TLSRoutes:
+
+- Use the same hostname from `spec.controlPlane.gateway.hostname`
+- Reference the same parent Gateway resource via `parentRefs`
+- The `port` and `sectionName` fields are set automatically by Kamaji
+- Route to the appropriate Tenant Control Plane service
+
+The Gateway resource must have listeners configured for both ports (6443 and 8132) to support both routes.
+
+## Prerequisites
+
+Before using Gateway API support, ensure:
+
+1. **Gateway API CRDs are installed** in your cluster (Required CRDs: `GatewayClass`, `Gateway`, `TLSRoute`)
+
+2. **A Gateway resource exists** with appropriate listeners configured:
+    - At minimum, listeners for ports 6443 (control plane) and 8132 (Konnectivity)
+    - TLS protocol with Passthrough mode
+    - Hostname pattern matching your Tenant Control Plane hostnames
+
+3. **DNS is configured** to resolve your hostnames to the Gateway's external address
+
+4. **Gateway controller is running** (e.g., Envoy Gateway, Istio Gateway, etc.)
+
+## Configuration
+
+### TenantControlPlane Gateway Configuration
+
+Enable Gateway API mode by setting the `spec.controlPlane.gateway` field in your TenantControlPlane resource:
+
+```yaml
+apiVersion: kamaji.clastix.io/v1alpha1
+kind: TenantControlPlane
+metadata:
+  name: tcp-1
+spec:
+  controlPlane:
+  # ... gateway configuration:
+    gateway:
+      hostname: "tcp1.cluster.dev"
+      parentRefs:
+      - name: gateway
+        namespace: default
+      additionalMetadata:
+        labels:
+          environment: production
+        annotations:
+          example.com/custom: "value"
+  # ... rest of the spec
+    deployment:
+      replicas: 1
+    service:
+      serviceType: ClusterIP
+  dataStore: default
+  kubernetes:
+    version: v1.29.0
+    kubelet:
+      cgroupfs: systemd
+  networkProfile:
+    port: 6443
+    certSANs:
+    - "c11.cluster.dev"  # make sure to set this.
+  addons:
+    coreDNS: {}
+    kubeProxy: {}
+    konnectivity: {}
+
+```
+
+**Required fields:**
+
+- `hostname`: The hostname that will be used for routing (must match Gateway listener hostname pattern)
+- `parentRefs`: Array of Gateway references (name and namespace)
+
+**Optional fields:**
+
+- `additionalMetadata.labels`: Custom labels to add to TLSRoute resources
+- `additionalMetadata.annotations`: Custom annotations to add to TLSRoute resources
+
+!!! warning "Port and sectionName are set automatically"
+    Do not specify `port` or `sectionName` in `parentRefs`. Kamaji automatically sets these fields in TLSRoutes.
+
+### Gateway Resource Setup
+
+Your Gateway resource must have listeners configured for both the control plane and Konnectivity ports. Here's an example Gateway configuration:
+
+```yaml
+apiVersion: gateway.networking.k8s.io/v1
+kind: GatewayClass
+metadata:
+  name: envoy-gw-class
+spec:
+  controllerName: gateway.envoyproxy.io/gatewayclass-controller
+---
+apiVersion: gateway.networking.k8s.io/v1
+kind: Gateway
+metadata:
+  name: gateway
+  namespace: default
+spec:
+  gatewayClassName: envoy-gw-class
+  listeners:
+  - name: kube-apiserver
+    port: 6443
+    protocol: TLS
+    hostname: 'tcp1.cluster.dev'
+    tls:
+      mode: Passthrough
+    allowedRoutes:
+      kinds:
+      - group: gateway.networking.k8s.io
+        kind: TLSRoute
+      namespaces:
+        from: All
+
+    # if konnectivity addon is enabled:
+  - name: konnectivity-server
+    port: 8132
+    protocol: TLS
+    hostname: 'tcp1.cluster.dev'
+    tls:
+      mode: Passthrough
+    allowedRoutes:
+      kinds:
+      - group: gateway.networking.k8s.io
+        kind: TLSRoute
+      namespaces:
+        from: All
+    
+```
+
+
+## Multiple Tenant Control Planes
+
+You can use the same Gateway resource for multiple Tenant Control Planes by using different hostnames:
+
+```yaml
+# Gateway with wildcard hostname
+apiVersion: gateway.networking.k8s.io/v1
+kind: Gateway
+metadata:
+  name: gateway
+spec:
+  listeners:
+  - hostname: '*.cluster.dev'
+    name: kube-apiserver
+    port: 6443
+    # ...
+---
+# Tenant Control Plane 1
+apiVersion: kamaji.clastix.io/v1alpha1
+kind: TenantControlPlane
+metadata:
+  name: tcp-1
+spec:
+  controlPlane:
+    gateway:
+      hostname: "tcp1.cluster.dev"
+      parentRefs:
+      - name: gateway
+        namespace: default
+  # ...
+---
+# Tenant Control Plane 2
+apiVersion: kamaji.clastix.io/v1alpha1
+kind: TenantControlPlane
+metadata:
+  name: tcp-2
+spec:
+  controlPlane:
+    gateway:
+      hostname: "tcp2.cluster.dev"
+      parentRefs:
+      - name: gateway
+        namespace: default
+  # ...
+```
+
+Each Tenant Control Plane will get its own TLSRoutes with the respective hostnames, all routing through the same Gateway resource.
+
+You can check the Gateway status in the TenantControlPlane:
+
+```bash
+kubectl get tenantcontrolplane tcp-1 -o yaml
+```
+
+Look for the `status.kubernetesResources.gateway` and `status.addons.konnectivity.gateway` fields.
+
+
+## Additional Resources
+
+- [Gateway API Documentation](https://gateway-api.sigs.k8s.io/)
+- [Quickstart with Envoy Gateway](https://gateway.envoyproxy.io/docs/tasks/quickstart/)
+
+

docs/content/guides/gitops.md

@@ -4,6 +4,57 @@ This guide describe a declarative way to deploy Kubernetes add-ons across multip
 
 This way the tenant resources can be ensured from a single pane of glass, from the *Management Cluster*.
 
+## Installing Kamaji with GitOps
+
+For GitOps workflows using tools like FluxCD or ArgoCD, the kamaji-crds chart enables separate CRD management:
+
+```yaml
+# Step 1: HelmRelease for CRDs
+apiVersion: helm.toolkit.fluxcd.io/v2beta1
+kind: HelmRelease
+metadata:
+  name: kamaji-crds
+  namespace: kamaji-system
+spec:
+  interval: 10m
+  chart:
+    spec:
+      chart: kamaji-crds
+      version: 0.0.0+latest
+      sourceRef:
+        kind: HelmRepository
+        name: clastix
+        namespace: flux-system
+---
+# Step 2: HelmRelease for operator
+apiVersion: helm.toolkit.fluxcd.io/v2beta1
+kind: HelmRelease
+metadata:
+  name: kamaji
+  namespace: kamaji-system
+spec:
+  interval: 10m
+  dependsOn:
+    - name: kamaji-crds
+  chart:
+    spec:
+      chart: kamaji
+      version: 0.0.0+latest
+      sourceRef:
+        kind: HelmRepository
+        name: clastix
+        namespace: flux-system
+```
+
+!!! note "CRD Management Options"
+    The kamaji chart includes CRDs in its `crds/` directory. Using the separate kamaji-crds chart is optional and beneficial for:
+
+    - GitOps workflows requiring separate CRD lifecycle management
+    - Organizations with policies requiring separate CRD approval
+    - Scenarios where CRD updates must precede operator updates
+
+    For standard installations, using the kamaji chart alone is sufficient.
+
 ## Flux as the GitOps operator
 
 As GitOps ensures a constant reconciliation to a Git-versioned desired state, [Flux](https://fluxcd.io) can satisfy the requirement of those scenarios. In particular, the controllers that reconcile [resources](https://fluxcd.io/flux/concepts/#reconciliation) support communicating to external clusters.

docs/content/guides/kubeconfig-generator.md

@@ -0,0 +1,114 @@
+# Kubeconfig Generator
+
+The **Kubeconfig Generator** is a Kamaji extension that simplifies the distribution of Kubeconfig files for tenant clusters managed through Kamaji.
+
+Instead of manually exporting and editing credentials, the generator automates the creation of kubeconfigs aligned with your organizational policies.
+
+## Motivation
+
+When managing multiple Tenant Control Planes (TCPs), cluster administrators often face two challenges:
+
+1. **Consistency**: ensuring kubeconfigs are generated with the correct user identity, groups, and endpoints
+2. **Scalability**: distributing kubeconfigs to users across potentially dozens of tenant clusters without manual steps
+
+The `KubeconfigGenerator` resource addresses these problems by:
+
+- Selecting which TCPs to target via label selectors.
+- Defining how to build user and group identities in kubeconfigs.
+- Automatically maintaining kubeconfigs as new tenant clusters are created or updated.
+
+This provides a single, declarative way to manage kubeconfig lifecycle across all your tenants,
+especially convenient if those cases where an Identity Provider can't be used to delegate access to Tenant Control Plane clusters.
+
+## How it Works
+
+### Selection
+
+- `namespaceSelector` filters the namespaces from which Tenant Control Planes are discovered.
+- `tenantControlPlaneSelector` further refines which TCPs to include.
+
+### Identity Definition
+
+The `user` and `groups` fields use compound values, which can be either:
+
+- A static string (e.g., `developer`)
+- A dynamic reference resolved from the TCP object (e.g., `metadata.name`)
+
+This allows kubeconfigs to be tailored to the cluster’s context or a fixed organizational pattern.
+
+### Endpoint Resolution
+
+The generator pulls the API server endpoint from the TCP’s `admin` kubeconfig.
+
+By default it uses the `admin.svc` template, but this can be overridden with the `controlPlaneEndpointFrom` field.
+
+### Status and Errors
+
+The resource keeps track of how many kubeconfigs were attempted, how many succeeded,
+and provides detailed error reports for failed generations.
+
+## Typical Use Cases
+
+- **Platform Operators**: automatically distribute kubeconfigs to developers as new tenant clusters are provisioned.
+- **Multi-team Environments**: ensure each team gets kubeconfigs with the correct groups for RBAC authorization.
+- **Least Privilege Principle**: avoid distributing `cluster-admin` credentials with a fine-grained RBAC
+- **Dynamic Access**: use `fromDefinition` references to bind kubeconfig identities directly to tenant metadata
+ (e.g., prefixing users with the TCP's name).
+
+## Example Scenario
+
+A SaaS provider runs multiple Tenant Control Planes, each corresponding to a different customer.
+Instead of manually managing kubeconfigs for every customer environment, the operator defines a single `KubeconfigGenerator`:
+
+```yaml
+apiVersion: kamaji.clastix.io/v1alpha1
+kind: KubeconfigGenerator
+metadata:
+  name: tenant
+spec:
+  # Select only Tenant Control Planes living in namespaces
+  # labeled as production environments
+  namespaceSelector:
+    matchLabels:
+      environment: production
+  # Match all Tenant Control Planes in those namespaces
+  tenantControlPlaneSelector: {}
+  # Assign a static group "customer-admins"
+  groups:
+    - stringValue: "customer-admins"
+  # Derive the user identity dynamically from the TenantControlPlane metadata
+  user:
+    fromDefinition: "metadata.name"
+  # Use the public admin endpoint from the TCP’s kubeconfig
+  controlPlaneEndpointFrom: "admin.conf"
+```
+
+- Matches all TCPs in namespaces labeled `environment=production`.
+- Generates kubeconfigs with group `customer-admins`.
+- Derives the user identity from the TCP’s `metadata.name`.
+
+As new tenants are created, their kubeconfigs are generated automatically and kept up to date.
+
+```
+$: kubectl get secret --all-namespaces -l kamaji.clastix.io/managed-by=tenant
+NAMESPACE       NAME             TYPE     DATA   AGE
+alpha-tnt       env-133-tenant   Opaque   1      12h
+alpha-tnt       env-130-tenant   Opaque   1      2d
+bravo-tnt       prod-tenant      Opaque   1      2h
+charlie-tnt     stable-tenant    Opaque   1      1d
+```
+
+## Observability
+
+The generator exposes its status directly in the CRD:
+- `resources`: total number of TCPs targeted.
+- `availableResources`: successfully generated kubeconfigs.
+- `errors`: list of failed kubeconfig generations, including the affected resource and error message.
+
+This allows quick debugging and operational awareness.
+
+## Deployment
+
+The _Kubeconfig Generator_ is **not** enabled by default since it's still in experimental state.
+
+It can be enabled using the Helm value `kubeconfigGenerator.enabled=true` which is defaulted to `false`.

docs/content/guides/upgrade.md

@@ -1,13 +1,41 @@
 # Tenant Cluster Upgrade
-The process of upgrading a _“Tenant Cluster”_ consists in two steps:
+
+Upgrading a _Tenant Cluster_ consists of two main steps:
 
 1. Upgrade the Tenant Control Plane
-2. Upgrade of Tenant Worker Nodes
+2. Upgrade the Tenant Worker Nodes
+
+---
 
 ## Upgrade of Tenant Control Plane
-You should patch the `TenantControlPlane.spec.kubernetes.version` custom resource with a new compatible value according to the [Version Skew Policy](https://kubernetes.io/releases/version-skew-policy/).
 
-During the upgrade, a new ReplicaSet of Tenant Control Plane pod will be created, so make sure you have enough replicas to avoid service disruption. Also make sure you have the Rolling Update strategy properly configured:
+The version of the Tenant Control Plane is managed by updating the `TenantControlPlane.spec.kubernetes.version` field.  
+You should patch this field with a new compatible value according to the [Kubernetes Version Skew Policy](https://kubernetes.io/releases/version-skew-policy/).
+
+### Default Upgrade Strategy (Blue/Green)
+
+By default, when you upgrade a `TenantControlPlane`, Kamaji applies a **Blue/Green deployment** strategy.
+
+- `maxSurge: 100%`: all new control plane Pods are created at once.
+- `maxUnavailable: 0`: existing Pods remain running until the new Pods are ready.
+
+This ensures that the new ReplicaSet of Tenant Control Plane Pods comes up alongside the existing ones,
+minimising disruption and guaranteeing immediate failover.
+
+This approach provides some pros, such as a fast upgrade, and a minimal downtime, since existing Pods remain until the new ones are healthy.
+
+However, all new Pods start simultaneously, which may _overload communications with the DataStore_,
+and it requires sufficient cluster resources to host double the number of control plane Pods temporarily.
+
+### Alternative: Rolling Upgrade Strategy
+
+In environments with _constrained resources_, or where DataStore connections must be protected from sudden load spikes,
+you should configure a **Rolling Upgrade** strategy.
+
+This approach ensures that only a subset of Pods is replaced at a time,
+gradually rolling out the new version without stressing the infrastructure.
+
+Example configuration:
 
 ```yaml
 apiVersion: kamaji.clastix.io/v1alpha1
@@ -21,11 +49,10 @@ spec:
     deployment:
       replicas: 3
       strategy:
+        type: RollingUpdate
         rollingUpdate:
           maxSurge: 1
           maxUnavailable: 1
-        type: RollingUpdate
-...
 ```
 
 ## Upgrade of Tenant Worker Nodes

docs/content/guides/write-permissions.md

@@ -0,0 +1,115 @@
+# Write Permissions
+
+Using the _Write Permissions_ section, operators can limit write operations for a given Tenant Control Plane,
+where no further write actions can be made by its tenants.
+
+This feature ensures consistency during maintenance, migrations, incident recovery, quote enforcement,
+or when freezing workloads for auditing and compliance purposes.
+
+Write Operations can limit the following actions:
+
+- Create
+- Update
+- Delete
+
+By default, all write operations are allowed.
+
+## Enabling a Read-Only mode
+
+You can enable ReadOnly mode by setting all the boolean fields of `TenantControlPlane.spec.writePermissions` to `true`.
+
+```yaml
+apiVersion: kamaji.clastix.io/v1alpha1
+kind: TenantControlPlane
+metadata:
+  name: my-control-plane
+spec:
+  writePermissions:
+    blockCreate: true
+    blockUpdate: true
+    blockDelete: true
+```
+
+Once applied, the Tenant Control Plane will switch into `WriteLimited` status.
+
+## Enforcing a quota mode
+
+If your Tenant Control Plane has a Datastore quota, this feature allows freezing write and update operations,
+but still allowing its tenants to perform a clean-up by deleting exceeding resources.
+
+```yaml
+apiVersion: kamaji.clastix.io/v1alpha1
+kind: TenantControlPlane
+metadata:
+  name: my-control-plane
+spec:
+  writePermissions:
+    blockCreate: true
+    blockUpdate: true
+    blockDelete: false
+```
+
+!!! note "Datastore quota"
+    Kamaji does **not** enforce storage quota for a given Tenant Control Plane:
+    you have to implement it according to your business logic.
+
+## Monitoring the status
+
+You can verify the status of your Tenant Control Plane with `kubectl get tcp`:
+
+```json
+$: kubectl get tcp k8s-133
+NAME      VERSION   INSTALLED VERSION   STATUS         CONTROL-PLANE ENDPOINT   KUBECONFIG                 DATASTORE   AGE
+k8s-133   v1.33.0   v1.33.0             WriteLimited   172.18.255.100:6443      k8s-133-admin-kubeconfig   default     50d
+```
+
+The `STATUS` field will display `WriteLimited` when write permissions are limited.
+
+## How it works
+
+When a Tenant Control Plane write status is _limited_, Kamaji creates a `ValidatingWebhookConfiguration` in the Tenant Cluster:
+
+```
+$: kubectl get validatingwebhookconfigurations
+NAME                       WEBHOOKS   AGE
+kamaji-write-permissions   2          59m
+```
+
+The webhook intercepts all API requests to the Tenant Control Plane and programmatically denies any attempts to modify resources.
+
+As a result, all changes initiated by tenants (such as `kubectl apply`, `kubectl delete`, or CRD updates) could be blocked.
+
+!!! warning "Operators and Controller"
+    When the write status is limited, all actions are intercepted by the webhook.
+    If a Pod must be rescheduled, the webhook will deny it.
+
+## Behaviour with limited write operations
+
+If a tenant user tries to perform non-allowed write operations, such as:
+
+- creating resources when `TenantControlPlane.spec.writePermissions.blockCreate` is set to `true`
+- updating resources when `TenantControlPlane.spec.writePermissions.blockUpdate` is set to `true`
+- deleting resources when `TenantControlPlane.spec.writePermissions.blockDelete` is set to `true`
+
+the following error is returned:
+
+```
+Error from server (Forbidden): admission webhook "catchall.write-permissions.kamaji.clastix.io" denied the request:
+the current Control Plane has limited write permissions, current changes are blocked:
+removing the webhook may lead to an inconsistent state upon its completion
+```
+
+This guarantees the cluster remains in a frozen, consistent state, preventing partial updates or drift.
+
+## Use Cases
+
+Typical scenarios where ReadOnly mode is useful:
+
+- **Planned Maintenance**: freeze workloads before performing upgrades or infrastructure changes.
+- **Disaster Recovery**: lock the Tenant Control Plane to prevent accidental modifications during incident handling.
+- **Auditing & Compliance**: ensure workloads cannot be altered during a compliance check or certification process.
+- **Quota Enforcement**: preventing Datastore quote over commit in terms of storage size.
+
+!!! info "Migrating the DataStore"
+    In a similar manner, when migrating a Tenant Control Plane to a different store, similar enforcement is put in place.
+    This is managed automatically by Kamaji: there's no need to toggle on and off the ReadOnly mode.

docs/mkdocs.yml

@@ -63,20 +63,24 @@ nav:
 - 'Cluster API':
   - cluster-api/index.md
   - cluster-api/control-plane-provider.md
-  - cluster-api/cluster-class.md
-  - cluster-api/cluster-autoscaler.md
   - cluster-api/vsphere-infra-provider.md
   - cluster-api/proxmox-infra-provider.md
   - cluster-api/other-providers.md
+  - cluster-api/cluster-autoscaler.md
+  - cluster-api/cluster-class.md
 - 'Guides':
   - guides/index.md
   - guides/alternative-datastore.md
   - guides/backup-and-restore.md
   - guides/certs-lifecycle.md
   - guides/pausing.md
+  - guides/write-permissions.md
   - guides/datastore-migration.md
+  - guides/datastore-overrides.md
   - guides/gitops.md
   - guides/console.md
+  - guides/kubeconfig-generator.md
+  - guides/gateway-api.md
   - guides/upgrade.md
   - guides/monitoring.md
   - guides/terraform.md

docs/overrides/assets/stylesheets/home.css

@@ -30,6 +30,10 @@
   grid-template-columns: repeat(3, 1fr);
 }
 
+.tx-grid--1x2 {
+  grid-template-columns: repeat(2, 1fr);
+}
+
 /* Card styles */
 .tx-card {
   padding: var(--spacing-md);
@@ -182,14 +186,16 @@
   }
 
   .tx-grid--3x2,
-  .tx-grid--3x1 {
+  .tx-grid--3x1,
+  .tx-grid--1x2 {
     grid-template-columns: repeat(2, 1fr);
   }
 }
 
 @media screen and (max-width: 600px) {
   .tx-grid--3x2,
-  .tx-grid--3x1 {
+  .tx-grid--3x1,
+  .tx-grid--1x2 {
     grid-template-columns: 1fr;
   }
 

docs/overrides/home.html

@@ -28,11 +28,22 @@
 <section class="tx-section tx-section--alternate">
   <div class="md-grid md-typeset">
     <h2 class="tx-section-title">What Users Say</h2>
-    <blockquote class="user-quote">
-      "Kamaji works exactly as expected: it's simple, efficient, scalable, and I especially appreciate how Clastix has always been available for technical discussions and support throughout these two years of collaboration."
-      <br><br>
-      <span style="font-weight:bold; font-size:1em;">— Jérémie Monsinjon, Head of Containers @OVHCloud</span>
-    </blockquote>
+    <div class="tx-grid tx-grid--1x2">
+      <div class="tx-card">
+        <blockquote class="user-quote">
+          "Kamaji works exactly as expected: it's simple, efficient, scalable, and I especially appreciate how Clastix has always been available for technical discussions and support."
+          <br>
+          <span style="font-weight:bold; font-size:1em;">— Jérémie Monsinjon, Head of Containers @OVHCloud</span>
+        </blockquote>
+      </div>
+      <div class="tx-card">
+        <blockquote class="user-quote">
+          "We are running the open-source project Kamaji within our Rackspace Spot platform today, and the results are impressive."
+          <br>
+          <span style="font-weight:bold; font-size:1em;">— Kevin Carter, Director @Rackspace</span>
+        </blockquote>
+      </div>
+    </div>
   </div>
 </section>
 

e2e/suite_test.go

@@ -4,10 +4,12 @@
 package e2e
 
 import (
+	"context"
 	"testing"
 
 	. "github.com/onsi/ginkgo/v2"
 	. "github.com/onsi/gomega"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/client-go/kubernetes/scheme"
 	"k8s.io/client-go/rest"
 	pointer "k8s.io/utils/ptr"
@@ -15,6 +17,8 @@ import (
 	"sigs.k8s.io/controller-runtime/pkg/envtest"
 	logf "sigs.k8s.io/controller-runtime/pkg/log"
 	"sigs.k8s.io/controller-runtime/pkg/log/zap"
+	gatewayv1 "sigs.k8s.io/gateway-api/apis/v1"
+	gatewayv1alpha2 "sigs.k8s.io/gateway-api/apis/v1alpha2"
 
 	kamajiv1alpha1 "github.com/clastix/kamaji/api/v1alpha1"
 )
@@ -56,13 +60,49 @@ var _ = BeforeSuite(func() {
 	err = kamajiv1alpha1.AddToScheme(scheme.Scheme)
 	Expect(err).NotTo(HaveOccurred())
 
+	err = gatewayv1.Install(scheme.Scheme)
+	Expect(err).NotTo(HaveOccurred())
+
+	err = gatewayv1alpha2.Install(scheme.Scheme)
+	Expect(err).NotTo(HaveOccurred())
+
 	//+kubebuilder:scaffold:scheme
 	k8sClient, err = client.New(cfg, client.Options{Scheme: scheme.Scheme})
 	Expect(err).NotTo(HaveOccurred())
 	Expect(k8sClient).NotTo(BeNil())
+
+	By("creating GatewayClass for Gateway API tests")
+	gatewayClass := &gatewayv1.GatewayClass{
+		ObjectMeta: metav1.ObjectMeta{
+			Name: "envoy-gw-class",
+		},
+		Spec: gatewayv1.GatewayClassSpec{
+			ControllerName: "gateway.envoyproxy.io/gatewayclass-controller",
+		},
+	}
+	Expect(k8sClient.Create(context.Background(), gatewayClass)).NotTo(HaveOccurred())
+
+	By("creating Gateway with kube-apiserver and konnectivity-server listeners")
+	CreateGatewayWithListeners("test-gateway", "default", "envoy-gw-class", "*.example.com")
 })
 
 var _ = AfterSuite(func() {
+	By("deleting Gateway resources")
+	gateway := &gatewayv1.Gateway{
+		ObjectMeta: metav1.ObjectMeta{
+			Name:      "test-gateway",
+			Namespace: "default",
+		},
+	}
+	_ = k8sClient.Delete(context.Background(), gateway)
+
+	gatewayClass := &gatewayv1.GatewayClass{
+		ObjectMeta: metav1.ObjectMeta{
+			Name: "envoy-gw-class",
+		},
+	}
+	_ = k8sClient.Delete(context.Background(), gatewayClass)
+
 	By("tearing down the test environment")
 	err := testEnv.Stop()
 	Expect(err).NotTo(HaveOccurred())

e2e/tcp_datastore_overrides_test.go

@@ -0,0 +1,68 @@
+// Copyright 2022 Clastix Labs
+// SPDX-License-Identifier: Apache-2.0
+
+package e2e
+
+import (
+	"context"
+
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	pointer "k8s.io/utils/ptr"
+
+	kamajiv1alpha1 "github.com/clastix/kamaji/api/v1alpha1"
+)
+
+var _ = Describe("Deploy a TenantControlPlane resource with DataStoreOverrides", func() {
+	// Fill TenantControlPlane object
+	tcp := &kamajiv1alpha1.TenantControlPlane{
+		ObjectMeta: metav1.ObjectMeta{
+			Name:      "tcp-datastore-overrides",
+			Namespace: "default",
+		},
+		Spec: kamajiv1alpha1.TenantControlPlaneSpec{
+			DataStore: "etcd-primary",
+			DataStoreOverrides: []kamajiv1alpha1.DataStoreOverride{{
+				Resource:  "/events",
+				DataStore: "etcd-secondary",
+			}},
+			ControlPlane: kamajiv1alpha1.ControlPlane{
+				Deployment: kamajiv1alpha1.DeploymentSpec{
+					Replicas: pointer.To(int32(1)),
+				},
+				Service: kamajiv1alpha1.ServiceSpec{
+					ServiceType: "ClusterIP",
+				},
+			},
+			NetworkProfile: kamajiv1alpha1.NetworkProfileSpec{
+				Address: "172.18.0.2",
+			},
+			Kubernetes: kamajiv1alpha1.KubernetesSpec{
+				Version: "v1.23.6",
+				Kubelet: kamajiv1alpha1.KubeletSpec{
+					CGroupFS: "cgroupfs",
+				},
+				AdmissionControllers: kamajiv1alpha1.AdmissionControllers{
+					"LimitRanger",
+					"ResourceQuota",
+				},
+			},
+			Addons: kamajiv1alpha1.AddonsSpec{},
+		},
+	}
+
+	// Create a TenantControlPlane resource into the cluster
+	JustBeforeEach(func() {
+		Expect(k8sClient.Create(context.Background(), tcp)).NotTo(HaveOccurred())
+	})
+
+	// Delete the TenantControlPlane resource after test is finished
+	JustAfterEach(func() {
+		Expect(k8sClient.Delete(context.Background(), tcp)).Should(Succeed())
+	})
+	// Check if TenantControlPlane resource has been created
+	It("Should be Ready", func() {
+		StatusMustEqualTo(tcp, kamajiv1alpha1.VersionReady)
+	})
+})

e2e/tcp_gateway_konnectivity_ready_test.go

@@ -0,0 +1,151 @@
+// Copyright 2022 Clastix Labs
+// SPDX-License-Identifier: Apache-2.0
+
+package e2e
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/types"
+	pointer "k8s.io/utils/ptr"
+	gatewayv1 "sigs.k8s.io/gateway-api/apis/v1"
+	gatewayv1alpha2 "sigs.k8s.io/gateway-api/apis/v1alpha2"
+
+	kamajiv1alpha1 "github.com/clastix/kamaji/api/v1alpha1"
+)
+
+var _ = Describe("Deploy a TenantControlPlane with Gateway API and Konnectivity", func() {
+	var tcp *kamajiv1alpha1.TenantControlPlane
+
+	JustBeforeEach(func() {
+		tcp = &kamajiv1alpha1.TenantControlPlane{
+			ObjectMeta: metav1.ObjectMeta{
+				Name:      "tcp-konnectivity-gateway",
+				Namespace: "default",
+			},
+			Spec: kamajiv1alpha1.TenantControlPlaneSpec{
+				ControlPlane: kamajiv1alpha1.ControlPlane{
+					Deployment: kamajiv1alpha1.DeploymentSpec{
+						Replicas: pointer.To(int32(1)),
+					},
+					Service: kamajiv1alpha1.ServiceSpec{
+						ServiceType: "ClusterIP",
+					},
+					Gateway: &kamajiv1alpha1.GatewaySpec{
+						Hostname: gatewayv1.Hostname("tcp-gateway-konnectivity.example.com"),
+						AdditionalMetadata: kamajiv1alpha1.AdditionalMetadata{
+							Labels: map[string]string{
+								"test.kamaji.io/gateway": "true",
+							},
+							Annotations: map[string]string{
+								"test.kamaji.io/created-by": "e2e-test",
+							},
+						},
+						GatewayParentRefs: []gatewayv1.ParentReference{
+							{
+								Name: "test-gateway",
+							},
+						},
+					},
+				},
+				NetworkProfile: kamajiv1alpha1.NetworkProfileSpec{
+					Address: "172.18.0.4",
+				},
+				Kubernetes: kamajiv1alpha1.KubernetesSpec{
+					Version: "v1.28.0",
+					Kubelet: kamajiv1alpha1.KubeletSpec{
+						CGroupFS: "cgroupfs",
+					},
+					AdmissionControllers: kamajiv1alpha1.AdmissionControllers{
+						"LimitRanger",
+						"ResourceQuota",
+					},
+				},
+				Addons: kamajiv1alpha1.AddonsSpec{
+					Konnectivity: &kamajiv1alpha1.KonnectivitySpec{
+						KonnectivityServerSpec: kamajiv1alpha1.KonnectivityServerSpec{
+							Port: 8132,
+						},
+					},
+				},
+			},
+		}
+		Expect(k8sClient.Create(context.Background(), tcp)).NotTo(HaveOccurred())
+	})
+
+	JustAfterEach(func() {
+		Expect(k8sClient.Delete(context.Background(), tcp)).Should(Succeed())
+
+		// Wait for the object to be completely deleted
+		Eventually(func() bool {
+			err := k8sClient.Get(context.Background(), types.NamespacedName{
+				Name:      tcp.Name,
+				Namespace: tcp.Namespace,
+			}, &kamajiv1alpha1.TenantControlPlane{})
+
+			return err != nil // Returns true when object is not found (deleted)
+		}).WithTimeout(time.Minute).Should(BeTrue())
+	})
+
+	It("Should be Ready", func() {
+		StatusMustEqualTo(tcp, kamajiv1alpha1.VersionReady)
+	})
+
+	It("Should create Konnectivity TLSRoute with correct sectionName", func() {
+		Eventually(func() error {
+			route := &gatewayv1alpha2.TLSRoute{}
+			if err := k8sClient.Get(context.Background(), types.NamespacedName{
+				Name:      tcp.Name + "-konnectivity",
+				Namespace: tcp.Namespace,
+			}, route); err != nil {
+				return err
+			}
+			if len(route.Spec.ParentRefs) == 0 {
+				return fmt.Errorf("parentRefs is empty")
+			}
+			if route.Spec.ParentRefs[0].SectionName == nil {
+				return fmt.Errorf("sectionName is nil")
+			}
+			if *route.Spec.ParentRefs[0].SectionName != gatewayv1.SectionName("konnectivity-server") {
+				return fmt.Errorf("expected sectionName 'konnectivity-server', got '%s'", *route.Spec.ParentRefs[0].SectionName)
+			}
+
+			return nil
+		}).WithTimeout(time.Minute).Should(Succeed())
+	})
+
+	It("Should use same hostname for both TLSRoutes", func() {
+		Eventually(func() error {
+			controlPlaneRoute := &gatewayv1alpha2.TLSRoute{}
+			if err := k8sClient.Get(context.Background(), types.NamespacedName{
+				Name:      tcp.Name,
+				Namespace: tcp.Namespace,
+			}, controlPlaneRoute); err != nil {
+				return err
+			}
+
+			konnectivityRoute := &gatewayv1alpha2.TLSRoute{}
+			if err := k8sClient.Get(context.Background(), types.NamespacedName{
+				Name:      tcp.Name + "-konnectivity",
+				Namespace: tcp.Namespace,
+			}, konnectivityRoute); err != nil {
+				return err
+			}
+
+			if len(controlPlaneRoute.Spec.Hostnames) == 0 || len(konnectivityRoute.Spec.Hostnames) == 0 {
+				return fmt.Errorf("hostnames are empty")
+			}
+			if controlPlaneRoute.Spec.Hostnames[0] != konnectivityRoute.Spec.Hostnames[0] {
+				return fmt.Errorf("hostnames do not match: control plane '%s', konnectivity '%s'",
+					controlPlaneRoute.Spec.Hostnames[0], konnectivityRoute.Spec.Hostnames[0])
+			}
+
+			return nil
+		}).WithTimeout(time.Minute).Should(Succeed())
+	})
+})

e2e/tcp_gateway_ready_test.go

@@ -0,0 +1,128 @@
+// Copyright 2022 Clastix Labs
+// SPDX-License-Identifier: Apache-2.0
+
+package e2e
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/types"
+	pointer "k8s.io/utils/ptr"
+	gatewayv1 "sigs.k8s.io/gateway-api/apis/v1"
+	gatewayv1alpha2 "sigs.k8s.io/gateway-api/apis/v1alpha2"
+
+	kamajiv1alpha1 "github.com/clastix/kamaji/api/v1alpha1"
+)
+
+var _ = Describe("Deploy a TenantControlPlane with Gateway API", func() {
+	var tcp *kamajiv1alpha1.TenantControlPlane
+
+	JustBeforeEach(func() {
+		tcp = &kamajiv1alpha1.TenantControlPlane{
+			ObjectMeta: metav1.ObjectMeta{
+				Name:      "tcp-gateway",
+				Namespace: "default",
+			},
+			Spec: kamajiv1alpha1.TenantControlPlaneSpec{
+				ControlPlane: kamajiv1alpha1.ControlPlane{
+					Deployment: kamajiv1alpha1.DeploymentSpec{
+						Replicas: pointer.To(int32(1)),
+					},
+					Service: kamajiv1alpha1.ServiceSpec{
+						ServiceType: "ClusterIP",
+					},
+					Gateway: &kamajiv1alpha1.GatewaySpec{
+						Hostname: gatewayv1.Hostname("tcp-gateway.example.com"),
+						AdditionalMetadata: kamajiv1alpha1.AdditionalMetadata{
+							Labels: map[string]string{
+								"test.kamaji.io/gateway": "true",
+							},
+							Annotations: map[string]string{
+								"test.kamaji.io/created-by": "e2e-test",
+							},
+						},
+						GatewayParentRefs: []gatewayv1.ParentReference{
+							{
+								Name: "test-gateway",
+							},
+						},
+					},
+				},
+				NetworkProfile: kamajiv1alpha1.NetworkProfileSpec{
+					Address: "172.18.0.3",
+				},
+				Kubernetes: kamajiv1alpha1.KubernetesSpec{
+					Version: "v1.23.6",
+					Kubelet: kamajiv1alpha1.KubeletSpec{
+						CGroupFS: "cgroupfs",
+					},
+					AdmissionControllers: kamajiv1alpha1.AdmissionControllers{
+						"LimitRanger",
+						"ResourceQuota",
+					},
+				},
+				Addons: kamajiv1alpha1.AddonsSpec{},
+			},
+		}
+		Expect(k8sClient.Create(context.Background(), tcp)).NotTo(HaveOccurred())
+	})
+
+	JustAfterEach(func() {
+		Expect(k8sClient.Delete(context.Background(), tcp)).Should(Succeed())
+
+		// Wait for the object to be completely deleted
+		Eventually(func() bool {
+			err := k8sClient.Get(context.Background(), types.NamespacedName{
+				Name:      tcp.Name,
+				Namespace: tcp.Namespace,
+			}, &kamajiv1alpha1.TenantControlPlane{})
+
+			return err != nil // Returns true when object is not found (deleted)
+		}).WithTimeout(time.Minute).Should(BeTrue())
+	})
+
+	It("Should be Ready", func() {
+		StatusMustEqualTo(tcp, kamajiv1alpha1.VersionReady)
+	})
+
+	It("Should create control plane TLSRoute with correct sectionName", func() {
+		Eventually(func() error {
+			route := &gatewayv1alpha2.TLSRoute{}
+			// TODO: Check ownership.
+			if err := k8sClient.Get(context.Background(), types.NamespacedName{
+				Name:      tcp.Name,
+				Namespace: tcp.Namespace,
+			}, route); err != nil {
+				return err
+			}
+			if len(route.Spec.ParentRefs) == 0 {
+				return fmt.Errorf("parentRefs is empty")
+			}
+			if route.Spec.ParentRefs[0].SectionName == nil {
+				return fmt.Errorf("sectionName is nil")
+			}
+			if *route.Spec.ParentRefs[0].SectionName != gatewayv1.SectionName("kube-apiserver") {
+				return fmt.Errorf("expected sectionName 'kube-apiserver', got '%s'", *route.Spec.ParentRefs[0].SectionName)
+			}
+
+			return nil
+		}).WithTimeout(time.Minute).Should(Succeed())
+	})
+
+	It("Should not create Konnectivity TLSRoute", func() {
+		// Verify Konnectivity route is not created
+		Consistently(func() error {
+			route := &gatewayv1alpha2.TLSRoute{}
+
+			return k8sClient.Get(context.Background(), types.NamespacedName{
+				Name:      tcp.Name + "-konnectivity",
+				Namespace: tcp.Namespace,
+			}, route)
+		}, 10*time.Second, time.Second).Should(HaveOccurred())
+	})
+})

e2e/tcp_ready_test.go

@@ -5,10 +5,12 @@ package e2e
 
 import (
 	"context"
+	"time"
 
 	. "github.com/onsi/ginkgo/v2"
 	. "github.com/onsi/gomega"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/types"
 	pointer "k8s.io/utils/ptr"
 
 	kamajiv1alpha1 "github.com/clastix/kamaji/api/v1alpha1"
@@ -59,5 +61,15 @@ var _ = Describe("Deploy a TenantControlPlane resource", func() {
 	// Check if TenantControlPlane resource has been created
 	It("Should be Ready", func() {
 		StatusMustEqualTo(tcp, kamajiv1alpha1.VersionReady)
+		// ObservedGeneration is set at the end of successful reconciliation,
+		// after status becomes Ready, so we need to wait for it.
+		Eventually(func() int64 {
+			if err := k8sClient.Get(context.Background(), types.NamespacedName{Name: tcp.GetName(), Namespace: tcp.GetNamespace()}, tcp); err != nil {
+				return -1
+			}
+
+			return tcp.Status.ObservedGeneration
+		}, 30*time.Second, time.Second).Should(Equal(tcp.Generation),
+			"ObservedGeneration should equal Generation after successful reconciliation")
 	})
 })

e2e/tcp_validation_version_unsupport_test.go

@@ -23,14 +23,14 @@ var _ = Describe("using an unsupported TenantControlPlane Kubernetes version", f
 	v, err := semver.Make(upgrade.KubeadmVersion[1:])
 	Expect(err).ToNot(HaveOccurred())
 
-	unsupported, err := semver.Make(fmt.Sprintf("%d.%d.%d", v.Major, v.Minor, v.Patch+1))
+	unsupported, err := semver.Make(fmt.Sprintf("%d.%d.%d", v.Major, v.Minor+1, 0))
 	Expect(err).ToNot(HaveOccurred())
 
 	It("should be blocked on creation", func() {
 		Consistently(func() error {
 			tcp := kamajiv1alpha1.TenantControlPlane{
 				ObjectMeta: metav1.ObjectMeta{
-					Name:      "non-linear-update",
+					Name:      "unsupported-version",
 					Namespace: "default",
 				},
 				Spec: kamajiv1alpha1.TenantControlPlaneSpec{

e2e/utils_test.go

@@ -19,7 +19,9 @@ import (
 	"k8s.io/apimachinery/pkg/types"
 	"k8s.io/client-go/kubernetes"
 	"k8s.io/client-go/util/retry"
+	pointer "k8s.io/utils/ptr"
 	"sigs.k8s.io/controller-runtime/pkg/client"
+	gatewayv1 "sigs.k8s.io/gateway-api/apis/v1"
 
 	kamajiv1alpha1 "github.com/clastix/kamaji/api/v1alpha1"
 )
@@ -209,3 +211,60 @@ func ScaleTenantControlPlane(tcp *kamajiv1alpha1.TenantControlPlane, replicas in
 	})
 	Expect(err).To(Succeed())
 }
+
+// CreateGatewayWithListeners creates a Gateway with both kube-apiserver and konnectivity-server listeners.
+func CreateGatewayWithListeners(gatewayName, namespace, gatewayClassName, hostname string) {
+	GinkgoHelper()
+	gateway := &gatewayv1.Gateway{
+		ObjectMeta: metav1.ObjectMeta{
+			Name:      gatewayName,
+			Namespace: namespace,
+		},
+		Spec: gatewayv1.GatewaySpec{
+			GatewayClassName: gatewayv1.ObjectName(gatewayClassName),
+			Listeners: []gatewayv1.Listener{
+				{
+					Name:     "kube-apiserver",
+					Port:     6443,
+					Protocol: gatewayv1.TLSProtocolType,
+					Hostname: pointer.To(gatewayv1.Hostname(hostname)),
+					TLS: &gatewayv1.ListenerTLSConfig{
+						Mode: pointer.To(gatewayv1.TLSModeType("Passthrough")),
+					},
+					AllowedRoutes: &gatewayv1.AllowedRoutes{
+						Namespaces: &gatewayv1.RouteNamespaces{
+							From: pointer.To(gatewayv1.NamespacesFromAll),
+						},
+						Kinds: []gatewayv1.RouteGroupKind{
+							{
+								Group: pointer.To(gatewayv1.Group("gateway.networking.k8s.io")),
+								Kind:  "TLSRoute",
+							},
+						},
+					},
+				},
+				{
+					Name:     "konnectivity-server",
+					Port:     8132,
+					Protocol: gatewayv1.TLSProtocolType,
+					Hostname: pointer.To(gatewayv1.Hostname(hostname)),
+					TLS: &gatewayv1.ListenerTLSConfig{
+						Mode: pointer.To(gatewayv1.TLSModeType("Passthrough")),
+					},
+					AllowedRoutes: &gatewayv1.AllowedRoutes{
+						Namespaces: &gatewayv1.RouteNamespaces{
+							From: pointer.To(gatewayv1.NamespacesFromAll),
+						},
+						Kinds: []gatewayv1.RouteGroupKind{
+							{
+								Group: pointer.To(gatewayv1.Group("gateway.networking.k8s.io")),
+								Kind:  "TLSRoute",
+							},
+						},
+					},
+				},
+			},
+		},
+	}
+	Expect(k8sClient.Create(context.Background(), gateway)).NotTo(HaveOccurred())
+}

e2e/worker_kubeadm_join_test.go

@@ -59,7 +59,7 @@ var _ = Describe("starting a kind worker with kubeadm", func() {
 					Port:    31443,
 				},
 				Kubernetes: kamajiv1alpha1.KubernetesSpec{
-					Version: "v1.29.0",
+					Version: "v1.35.0",
 					Kubelet: kamajiv1alpha1.KubeletSpec{
 						CGroupFS: "cgroupfs",
 					},

go.mod

@@ -1,50 +1,53 @@
 module github.com/clastix/kamaji
 
-go 1.24.1
+go 1.25.0
 
 require (
 	github.com/JamesStewy/go-mysqldump v0.2.2
 	github.com/blang/semver v3.5.1+incompatible
 	github.com/clastix/kamaji-telemetry v1.0.0
-	github.com/docker/docker v28.3.2+incompatible
+	github.com/docker/docker v28.5.2+incompatible
+	github.com/evanphx/json-patch/v5 v5.9.11
 	github.com/go-logr/logr v1.4.3
-	github.com/go-pg/pg/v10 v10.14.0
+	github.com/go-pg/pg/v10 v10.15.0
 	github.com/go-sql-driver/mysql v1.9.3
 	github.com/google/go-cmp v0.7.0
 	github.com/google/uuid v1.6.0
 	github.com/json-iterator/go v1.1.12
 	github.com/juju/mutex/v2 v2.0.0
-	github.com/nats-io/nats.go v1.43.0
-	github.com/onsi/ginkgo/v2 v2.23.4
-	github.com/onsi/gomega v1.37.0
-	github.com/pkg/errors v0.9.1
-	github.com/prometheus/client_golang v1.22.0
-	github.com/spf13/cobra v1.9.1
-	github.com/spf13/pflag v1.0.7
-	github.com/spf13/viper v1.20.1
-	github.com/testcontainers/testcontainers-go v0.38.0
-	go.etcd.io/etcd/api/v3 v3.5.21
-	go.etcd.io/etcd/client/v3 v3.5.21
+	github.com/nats-io/nats.go v1.48.0
+	github.com/onsi/ginkgo/v2 v2.28.1
+	github.com/onsi/gomega v1.39.1
+	github.com/prometheus/client_golang v1.23.2
+	github.com/prometheus/client_model v0.6.2
+	github.com/spf13/cobra v1.10.2
+	github.com/spf13/pflag v1.0.10
+	github.com/spf13/viper v1.21.0
+	github.com/testcontainers/testcontainers-go v0.40.0
+	go.etcd.io/etcd/api/v3 v3.6.7
+	go.etcd.io/etcd/client/v3 v3.6.7
 	go.uber.org/automaxprocs v1.6.0
 	gomodules.xyz/jsonpatch/v2 v2.5.0
-	k8s.io/api v0.33.1
-	k8s.io/apimachinery v0.33.1
-	k8s.io/apiserver v0.33.1
-	k8s.io/client-go v0.33.1
+	k8s.io/api v0.35.0
+	k8s.io/apiextensions-apiserver v0.34.1
+	k8s.io/apimachinery v0.35.0
+	k8s.io/client-go v0.35.0
 	k8s.io/cluster-bootstrap v0.0.0
 	k8s.io/klog/v2 v2.130.1
 	k8s.io/kubelet v0.0.0
-	k8s.io/kubernetes v1.33.2
-	k8s.io/utils v0.0.0-20241104100929-3ea5e8cea738
-	sigs.k8s.io/controller-runtime v0.21.0
+	k8s.io/kubernetes v1.35.0
+	k8s.io/utils v0.0.0-20251002143259-bc988d571ff4
+	sigs.k8s.io/controller-runtime v0.22.4
+	sigs.k8s.io/gateway-api v1.4.1
 )
 
 require (
-	cel.dev/expr v0.19.1 // indirect
-	dario.cat/mergo v1.0.1 // indirect
+	cel.dev/expr v0.24.0 // indirect
+	dario.cat/mergo v1.0.2 // indirect
 	filippo.io/edwards25519 v1.1.0 // indirect
 	github.com/Azure/go-ansiterm v0.0.0-20230124172434-306776ec8161 // indirect
 	github.com/DATA-DOG/go-sqlmock v1.5.2 // indirect
+	github.com/Masterminds/semver/v3 v3.4.0 // indirect
 	github.com/Microsoft/go-winio v0.6.2 // indirect
 	github.com/NYTimes/gziphandler v1.1.1 // indirect
 	github.com/antlr4-go/antlr/v4 v4.13.0 // indirect
@@ -57,42 +60,40 @@ require (
 	github.com/containerd/log v0.1.0 // indirect
 	github.com/containerd/platforms v0.2.1 // indirect
 	github.com/coredns/caddy v1.1.1 // indirect
-	github.com/coredns/corefile-migration v1.0.25 // indirect
+	github.com/coredns/corefile-migration v1.0.29 // indirect
 	github.com/coreos/go-semver v0.3.1 // indirect
 	github.com/coreos/go-systemd/v22 v22.5.0 // indirect
 	github.com/cpuguy83/dockercfg v0.3.2 // indirect
 	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
 	github.com/distribution/reference v0.6.0 // indirect
-	github.com/docker/go-connections v0.5.0 // indirect
+	github.com/docker/go-connections v0.6.0 // indirect
 	github.com/docker/go-units v0.5.0 // indirect
 	github.com/ebitengine/purego v0.8.4 // indirect
-	github.com/emicklei/go-restful/v3 v3.11.0 // indirect
-	github.com/evanphx/json-patch v4.12.0+incompatible // indirect
-	github.com/evanphx/json-patch/v5 v5.9.11 // indirect
+	github.com/emicklei/go-restful/v3 v3.13.0 // indirect
+	github.com/evanphx/json-patch v5.7.0+incompatible // indirect
 	github.com/felixge/httpsnoop v1.0.4 // indirect
-	github.com/fsnotify/fsnotify v1.8.0 // indirect
-	github.com/fxamacker/cbor/v2 v2.7.0 // indirect
+	github.com/fsnotify/fsnotify v1.9.0 // indirect
+	github.com/fxamacker/cbor/v2 v2.9.0 // indirect
 	github.com/go-errors/errors v1.4.2 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
 	github.com/go-logr/zapr v1.3.0 // indirect
 	github.com/go-ole/go-ole v1.2.6 // indirect
-	github.com/go-openapi/jsonpointer v0.21.0 // indirect
-	github.com/go-openapi/jsonreference v0.20.2 // indirect
-	github.com/go-openapi/swag v0.23.0 // indirect
+	github.com/go-openapi/jsonpointer v0.21.2 // indirect
+	github.com/go-openapi/jsonreference v0.21.0 // indirect
+	github.com/go-openapi/swag v0.23.1 // indirect
 	github.com/go-pg/zerochecker v0.2.0 // indirect
 	github.com/go-task/slim-sprig/v3 v3.0.0 // indirect
-	github.com/go-viper/mapstructure/v2 v2.2.1 // indirect
+	github.com/go-viper/mapstructure/v2 v2.4.0 // indirect
 	github.com/gogo/protobuf v1.3.2 // indirect
 	github.com/golang/mock v1.6.0 // indirect
 	github.com/golang/protobuf v1.5.4 // indirect
 	github.com/google/btree v1.1.3 // indirect
-	github.com/google/cel-go v0.23.2 // indirect
-	github.com/google/gnostic-models v0.6.9 // indirect
-	github.com/google/pprof v0.0.0-20250403155104-27863c87afa6 // indirect
-	github.com/google/shlex v0.0.0-20191202100458-e7afc7fbc510 // indirect
+	github.com/google/cel-go v0.26.0 // indirect
+	github.com/google/gnostic-models v0.7.0 // indirect
+	github.com/google/pprof v0.0.0-20260115054156-294ebfa9ad83 // indirect
 	github.com/gregjones/httpcache v0.0.0-20190611155906-901d90724c79 // indirect
 	github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0 // indirect
-	github.com/grpc-ecosystem/grpc-gateway/v2 v2.24.0 // indirect
+	github.com/grpc-ecosystem/grpc-gateway/v2 v2.26.3 // indirect
 	github.com/inconshreveable/mousetrap v1.1.0 // indirect
 	github.com/jinzhu/inflection v1.0.0 // indirect
 	github.com/josharian/intern v1.0.0 // indirect
@@ -103,7 +104,7 @@ require (
 	github.com/lithammer/dedent v1.1.0 // indirect
 	github.com/lufia/plan9stats v0.0.0-20211012122336-39d0f177ccd0 // indirect
 	github.com/magiconair/properties v1.8.10 // indirect
-	github.com/mailru/easyjson v0.7.7 // indirect
+	github.com/mailru/easyjson v0.9.0 // indirect
 	github.com/moby/docker-image-spec v1.3.1 // indirect
 	github.com/moby/go-archive v0.1.0 // indirect
 	github.com/moby/patternmatcher v0.6.0 // indirect
@@ -112,7 +113,7 @@ require (
 	github.com/moby/sys/userns v0.1.0 // indirect
 	github.com/moby/term v0.5.0 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
-	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/modern-go/reflect2 v1.0.3-0.20250322232337-35a7c28c31ee // indirect
 	github.com/monochromegane/go-gitignore v0.0.0-20200626010858-205db1a8cc00 // indirect
 	github.com/morikuni/aec v1.0.0 // indirect
 	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
@@ -120,21 +121,22 @@ require (
 	github.com/nats-io/nuid v1.0.1 // indirect
 	github.com/opencontainers/go-digest v1.0.0 // indirect
 	github.com/opencontainers/image-spec v1.1.1 // indirect
-	github.com/pelletier/go-toml/v2 v2.2.3 // indirect
+	github.com/pelletier/go-toml/v2 v2.2.4 // indirect
 	github.com/peterbourgon/diskv v2.0.1+incompatible // indirect
+	github.com/pkg/errors v0.9.1 // indirect
 	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
 	github.com/power-devops/perfstat v0.0.0-20210106213030-5aafc221ea8c // indirect
-	github.com/prometheus/client_model v0.6.1 // indirect
-	github.com/prometheus/common v0.62.0 // indirect
-	github.com/prometheus/procfs v0.15.1 // indirect
-	github.com/sagikazarmark/locafero v0.7.0 // indirect
-	github.com/shirou/gopsutil/v4 v4.25.5 // indirect
+	github.com/prometheus/common v0.66.1 // indirect
+	github.com/prometheus/procfs v0.17.0 // indirect
+	github.com/robfig/cron/v3 v3.0.1 // indirect
+	github.com/sagikazarmark/locafero v0.11.0 // indirect
+	github.com/shirou/gopsutil/v4 v4.25.6 // indirect
 	github.com/sirupsen/logrus v1.9.3 // indirect
-	github.com/sourcegraph/conc v0.3.0 // indirect
-	github.com/spf13/afero v1.12.0 // indirect
-	github.com/spf13/cast v1.7.1 // indirect
+	github.com/sourcegraph/conc v0.3.1-0.20240121214520-5f936abd7ae8 // indirect
+	github.com/spf13/afero v1.15.0 // indirect
+	github.com/spf13/cast v1.10.0 // indirect
 	github.com/stoewer/go-strcase v1.3.0 // indirect
-	github.com/stretchr/testify v1.10.0 // indirect
+	github.com/stretchr/testify v1.11.1 // indirect
 	github.com/subosito/gotenv v1.6.0 // indirect
 	github.com/tklauser/go-sysconf v0.3.12 // indirect
 	github.com/tklauser/numcpus v0.6.1 // indirect
@@ -146,90 +148,93 @@ require (
 	github.com/x448/float16 v0.8.4 // indirect
 	github.com/xlab/treeprint v1.2.0 // indirect
 	github.com/yusufpapurcu/wmi v1.2.4 // indirect
-	go.etcd.io/etcd/client/pkg/v3 v3.5.21 // indirect
+	go.etcd.io/etcd/client/pkg/v3 v3.6.7 // indirect
 	go.opentelemetry.io/auto/sdk v1.1.0 // indirect
-	go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.58.0 // indirect
-	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.58.0 // indirect
-	go.opentelemetry.io/otel v1.35.0 // indirect
-	go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.33.0 // indirect
-	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.33.0 // indirect
-	go.opentelemetry.io/otel/metric v1.35.0 // indirect
-	go.opentelemetry.io/otel/sdk v1.33.0 // indirect
-	go.opentelemetry.io/otel/trace v1.35.0 // indirect
-	go.opentelemetry.io/proto/otlp v1.4.0 // indirect
+	go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.60.0 // indirect
+	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.61.0 // indirect
+	go.opentelemetry.io/otel v1.37.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.34.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.34.0 // indirect
+	go.opentelemetry.io/otel/metric v1.37.0 // indirect
+	go.opentelemetry.io/otel/sdk v1.37.0 // indirect
+	go.opentelemetry.io/otel/trace v1.37.0 // indirect
+	go.opentelemetry.io/proto/otlp v1.5.0 // indirect
 	go.uber.org/multierr v1.11.0 // indirect
 	go.uber.org/zap v1.27.0 // indirect
-	golang.org/x/crypto v0.37.0 // indirect
+	go.yaml.in/yaml/v2 v2.4.3 // indirect
+	go.yaml.in/yaml/v3 v3.0.4 // indirect
+	golang.org/x/crypto v0.47.0 // indirect
 	golang.org/x/exp v0.0.0-20240719175910-8a7402abbf56 // indirect
-	golang.org/x/net v0.38.0 // indirect
-	golang.org/x/oauth2 v0.27.0 // indirect
-	golang.org/x/sync v0.13.0 // indirect
-	golang.org/x/sys v0.32.0 // indirect
-	golang.org/x/term v0.31.0 // indirect
-	golang.org/x/text v0.24.0 // indirect
-	golang.org/x/time v0.9.0 // indirect
-	golang.org/x/tools v0.31.0 // indirect
-	google.golang.org/genproto/googleapis/api v0.0.0-20241209162323-e6fa225c2576 // indirect
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20241223144023-3abc09e42ca8 // indirect
-	google.golang.org/grpc v1.68.1 // indirect
-	google.golang.org/protobuf v1.36.5 // indirect
-	gopkg.in/evanphx/json-patch.v4 v4.12.0 // indirect
+	golang.org/x/mod v0.32.0 // indirect
+	golang.org/x/net v0.49.0 // indirect
+	golang.org/x/oauth2 v0.30.0 // indirect
+	golang.org/x/sync v0.19.0 // indirect
+	golang.org/x/sys v0.40.0 // indirect
+	golang.org/x/term v0.39.0 // indirect
+	golang.org/x/text v0.33.0 // indirect
+	golang.org/x/time v0.12.0 // indirect
+	golang.org/x/tools v0.41.0 // indirect
+	google.golang.org/genproto/googleapis/api v0.0.0-20250707201910-8d1bb00bc6a7 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20250826171959-ef028d996bc1 // indirect
+	google.golang.org/grpc v1.75.1 // indirect
+	google.golang.org/protobuf v1.36.8 // indirect
+	gopkg.in/evanphx/json-patch.v4 v4.13.0 // indirect
 	gopkg.in/go-jose/go-jose.v2 v2.6.3 // indirect
 	gopkg.in/inf.v0 v0.9.1 // indirect
 	gopkg.in/natefinch/lumberjack.v2 v2.2.1 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
-	k8s.io/apiextensions-apiserver v0.33.1 // indirect
+	k8s.io/apiserver v0.35.0 // indirect
 	k8s.io/cli-runtime v0.0.0 // indirect
 	k8s.io/cloud-provider v0.0.0 // indirect
-	k8s.io/component-base v0.33.1 // indirect
-	k8s.io/component-helpers v0.33.1 // indirect
-	k8s.io/controller-manager v0.33.1 // indirect
-	k8s.io/cri-api v0.33.1 // indirect
+	k8s.io/component-base v0.35.0 // indirect
+	k8s.io/component-helpers v0.35.0 // indirect
+	k8s.io/controller-manager v0.35.0 // indirect
+	k8s.io/cri-api v0.35.0 // indirect
 	k8s.io/cri-client v0.0.0 // indirect
-	k8s.io/kms v0.33.1 // indirect
-	k8s.io/kube-openapi v0.0.0-20250318190949-c8a335a9a2ff // indirect
+	k8s.io/kms v0.35.0 // indirect
+	k8s.io/kube-openapi v0.0.0-20250910181357-589584f1c912 // indirect
 	k8s.io/kube-proxy v0.0.0 // indirect
-	k8s.io/system-validators v1.9.1 // indirect
+	k8s.io/system-validators v1.12.1 // indirect
 	mellium.im/sasl v0.3.1 // indirect
 	sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.31.2 // indirect
-	sigs.k8s.io/json v0.0.0-20241010143419-9aa6b5e7a4b3 // indirect
-	sigs.k8s.io/kustomize/api v0.19.0 // indirect
-	sigs.k8s.io/kustomize/kyaml v0.19.0 // indirect
+	sigs.k8s.io/json v0.0.0-20250730193827-2d320260d730 // indirect
+	sigs.k8s.io/kustomize/api v0.20.1 // indirect
+	sigs.k8s.io/kustomize/kyaml v0.20.1 // indirect
 	sigs.k8s.io/randfill v1.0.0 // indirect
-	sigs.k8s.io/structured-merge-diff/v4 v4.6.0 // indirect
-	sigs.k8s.io/yaml v1.4.0 // indirect
+	sigs.k8s.io/structured-merge-diff/v6 v6.3.0 // indirect
+	sigs.k8s.io/yaml v1.6.0 // indirect
 )
 
 replace (
-	k8s.io/api => k8s.io/api v0.33.1
-	k8s.io/apiextensions-apiserver => k8s.io/apiextensions-apiserver v0.33.1
-	k8s.io/apimachinery => k8s.io/apimachinery v0.33.1
-	k8s.io/apiserver => k8s.io/apiserver v0.33.1
-	k8s.io/cli-runtime => k8s.io/cli-runtime v0.33.1
-	k8s.io/client-go => k8s.io/client-go v0.33.1
-	k8s.io/cloud-provider => k8s.io/cloud-provider v0.33.1
-	k8s.io/cluster-bootstrap => k8s.io/cluster-bootstrap v0.33.1
-	k8s.io/code-generator => k8s.io/code-generator v0.33.1
-	k8s.io/component-base => k8s.io/component-base v0.33.1
-	k8s.io/component-helpers => k8s.io/component-helpers v0.33.1
-	k8s.io/controller-manager => k8s.io/controller-manager v0.33.1
-	k8s.io/cri-api => k8s.io/cri-api v0.33.1
-	k8s.io/cri-client => k8s.io/cri-client v0.33.1
-	k8s.io/csi-translation-lib => k8s.io/csi-translation-lib v0.33.1
-	k8s.io/dynamic-resource-allocation => k8s.io/dynamic-resource-allocation v0.33.1
-	k8s.io/endpointslice => k8s.io/endpointslice v0.33.1
-	k8s.io/externaljwt => k8s.io/externaljwt v0.33.1
-	k8s.io/kube-aggregator => k8s.io/kube-aggregator v0.33.1
-	k8s.io/kube-controller-manager => k8s.io/kube-controller-manager v0.33.1
-	k8s.io/kube-proxy => k8s.io/kube-proxy v0.33.1
-	k8s.io/kube-scheduler => k8s.io/kube-scheduler v0.33.1
-	k8s.io/kubectl => k8s.io/kubectl v0.33.1
-	k8s.io/kubelet => k8s.io/kubelet v0.33.1
-	k8s.io/legacy-cloud-providers => k8s.io/legacy-cloud-providers v0.33.1
-	k8s.io/metrics => k8s.io/metrics v0.33.1
-	k8s.io/mount-utils => k8s.io/mount-utils v0.33.1
-	k8s.io/pod-security-admission => k8s.io/pod-security-admission v0.33.1
-	k8s.io/sample-apiserver => k8s.io/sample-apiserver v0.33.1
+	k8s.io/api => k8s.io/api v0.35.0
+	k8s.io/apiextensions-apiserver => k8s.io/apiextensions-apiserver v0.35.0
+	k8s.io/apimachinery => k8s.io/apimachinery v0.35.0
+	k8s.io/apiserver => k8s.io/apiserver v0.35.0
+	k8s.io/cli-runtime => k8s.io/cli-runtime v0.35.0
+	k8s.io/client-go => k8s.io/client-go v0.35.0
+	k8s.io/cloud-provider => k8s.io/cloud-provider v0.35.0
+	k8s.io/cluster-bootstrap => k8s.io/cluster-bootstrap v0.35.0
+	k8s.io/code-generator => k8s.io/code-generator v0.35.0
+	k8s.io/component-base => k8s.io/component-base v0.35.0
+	k8s.io/component-helpers => k8s.io/component-helpers v0.35.0
+	k8s.io/controller-manager => k8s.io/controller-manager v0.35.0
+	k8s.io/cri-api => k8s.io/cri-api v0.35.0
+	k8s.io/cri-client => k8s.io/cri-client v0.35.0
+	k8s.io/csi-translation-lib => k8s.io/csi-translation-lib v0.35.0
+	k8s.io/dynamic-resource-allocation => k8s.io/dynamic-resource-allocation v0.35.0
+	k8s.io/endpointslice => k8s.io/endpointslice v0.35.0
+	k8s.io/externaljwt => k8s.io/externaljwt v0.35.0
+	k8s.io/kube-aggregator => k8s.io/kube-aggregator v0.35.0
+	k8s.io/kube-controller-manager => k8s.io/kube-controller-manager v0.35.0
+	k8s.io/kube-proxy => k8s.io/kube-proxy v0.35.0
+	k8s.io/kube-scheduler => k8s.io/kube-scheduler v0.35.0
+	k8s.io/kubectl => k8s.io/kubectl v0.35.0
+	k8s.io/kubelet => k8s.io/kubelet v0.35.0
+	k8s.io/legacy-cloud-providers => k8s.io/legacy-cloud-providers v0.35.0
+	k8s.io/metrics => k8s.io/metrics v0.35.0
+	k8s.io/mount-utils => k8s.io/mount-utils v0.35.0
+	k8s.io/pod-security-admission => k8s.io/pod-security-admission v0.35.0
+	k8s.io/sample-apiserver => k8s.io/sample-apiserver v0.35.0
 )
 
 replace github.com/JamesStewy/go-mysqldump => github.com/vtoma/go-mysqldump v1.0.0

go.sum

@@ -1,7 +1,7 @@
-cel.dev/expr v0.19.1 h1:NciYrtDRIR0lNCnH1LFJegdjspNx9fI59O7TWcua/W4=
-cel.dev/expr v0.19.1/go.mod h1:MrpN08Q+lEBs+bGYdLxxHkZoUSsCp0nSKTs0nTymJgw=
-dario.cat/mergo v1.0.1 h1:Ra4+bf83h2ztPIQYNP99R6m+Y7KfnARDfID+a+vLl4s=
-dario.cat/mergo v1.0.1/go.mod h1:uNxQE+84aUszobStD9th8a29P2fMDhsBdgRYvZOxGmk=
+cel.dev/expr v0.24.0 h1:56OvJKSH3hDGL0ml5uSxZmz3/3Pq4tJ+fb1unVLAFcY=
+cel.dev/expr v0.24.0/go.mod h1:hLPLo1W4QUmuYdA72RBX06QTs6MXw941piREPl3Yfiw=
+dario.cat/mergo v1.0.2 h1:85+piFYR1tMbRrLcDwR18y4UKJ3aH1Tbzi24VRW1TK8=
+dario.cat/mergo v1.0.2/go.mod h1:E/hbnu0NxMFBjpMIE34DRGLWqDy0g5FuKDhCb31ngxA=
 filippo.io/edwards25519 v1.1.0 h1:FNf4tywRC1HmFuKW5xopWpigGjJKiJSV0Cqo0cJWDaA=
 filippo.io/edwards25519 v1.1.0/go.mod h1:BxyFTGdWcka3PhytdK4V28tE5sGfRvvvRV7EaN4VDT4=
 github.com/AdaLogics/go-fuzz-headers v0.0.0-20240806141605-e8a1dd7889d6 h1:He8afgbRMd7mFxO99hRNu+6tazq8nFF9lIwo9JFroBk=
@@ -10,6 +10,8 @@ github.com/Azure/go-ansiterm v0.0.0-20230124172434-306776ec8161 h1:L/gRVlceqvL25
 github.com/Azure/go-ansiterm v0.0.0-20230124172434-306776ec8161/go.mod h1:xomTg63KZ2rFqZQzSB4Vz2SUXa1BpHTVz9L5PTmPC4E=
 github.com/DATA-DOG/go-sqlmock v1.5.2 h1:OcvFkGmslmlZibjAjaHm3L//6LiuBgolP7OputlJIzU=
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@@ -38,8 +40,8 @@ github.com/containerd/platforms v0.2.1 h1:zvwtM3rz2YHPQsF2CHYM8+KtB5dvhISiXh5ZpS
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@@ -47,7 +49,6 @@ github.com/coreos/go-systemd/v22 v22.5.0/go.mod h1:Y58oyj3AT4RCenI/lSvhwexgC+NSV
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@@ -56,20 +57,20 @@ github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc h1:U9qPSI2PIWSS1
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@@ -77,10 +78,16 @@ github.com/felixge/httpsnoop v1.0.4/go.mod h1:m8KPJKqk1gH5J9DgRY2ASl2lWCfGKXixSw
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@@ -92,50 +99,47 @@ github.com/go-logr/zapr v1.3.0 h1:XGdV8XW8zdwFiwOA2Dryh1gj2KRQyOOoNmBy4EplIcQ=
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@@ -393,31 +413,37 @@ go.uber.org/multierr v1.11.0 h1:blXXJkSxSSfBVBlC76pxqeO+LN3aDfLQo+309xJstO0=
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@@ -430,46 +456,47 @@ golang.org/x/sys v0.0.0-20210616094352-59db8d763f22/go.mod h1:oPkhp1MJrh7nUepCBc
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 gopkg.in/inf.v0 v0.9.1 h1:73M5CoZyi3ZLMOyDlQh031Cx6N9NDJ2Vvfl76EDAgDc=
@@ -486,64 +513,65 @@ gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
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internal/builders/controlplane/deployment.go

@@ -12,7 +12,6 @@ import (
 	"strconv"
 	"strings"
 
-	"github.com/pkg/errors"
 	appsv1 "k8s.io/api/apps/v1"
 	corev1 "k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
@@ -52,9 +51,15 @@ const (
 	kineInitContainerName     = "chmod"
 )
 
+type DataStoreOverrides struct {
+	Resource  string
+	DataStore kamajiv1alpha1.DataStore
+}
+
 type Deployment struct {
 	KineContainerImage string
 	DataStore          kamajiv1alpha1.DataStore
+	DataStoreOverrides []DataStoreOverrides
 	Client             client.Client
 }
 
@@ -136,7 +141,7 @@ func (d Deployment) setStrategy(deployment *appsv1.DeploymentSpec, tcp kamajiv1a
 	if tcp.Spec.ControlPlane.Deployment.Strategy.RollingUpdate == nil {
 		maxSurge := intstr.FromString("100%")
 
-		maxUnavailable := intstr.FromInt(0)
+		maxUnavailable := intstr.FromInt32(0)
 
 		deployment.Strategy.RollingUpdate = &appsv1.RollingUpdateDeployment{
 			MaxUnavailable: &maxUnavailable,
@@ -344,7 +349,7 @@ func (d Deployment) buildScheduler(podSpec *corev1.PodSpec, tenantControlPlane k
 	args["--authorization-kubeconfig"] = kubeconfig
 	args["--bind-address"] = "0.0.0.0"
 	args["--kubeconfig"] = kubeconfig
-	args["--leader-elect"] = "true" //nolint:goconst
+	args["--leader-elect"] = "true"
 
 	podSpec.Containers[index].Name = schedulerContainerName
 	podSpec.Containers[index].Image = tenantControlPlane.Spec.ControlPlane.Deployment.RegistrySettings.KubeSchedulerImage(tenantControlPlane.Spec.Kubernetes.Version)
@@ -354,7 +359,7 @@ func (d Deployment) buildScheduler(podSpec *corev1.PodSpec, tenantControlPlane k
 		ProbeHandler: corev1.ProbeHandler{
 			HTTPGet: &corev1.HTTPGetAction{
 				Path:   "/healthz",
-				Port:   intstr.FromInt(10259),
+				Port:   intstr.FromInt32(10259),
 				Scheme: corev1.URISchemeHTTPS,
 			},
 		},
@@ -368,7 +373,7 @@ func (d Deployment) buildScheduler(podSpec *corev1.PodSpec, tenantControlPlane k
 		ProbeHandler: corev1.ProbeHandler{
 			HTTPGet: &corev1.HTTPGetAction{
 				Path:   "/healthz",
-				Port:   intstr.FromInt(10259),
+				Port:   intstr.FromInt32(10259),
 				Scheme: corev1.URISchemeHTTPS,
 			},
 		},
@@ -411,33 +416,32 @@ func (d Deployment) buildControllerManager(podSpec *corev1.PodSpec, tenantContro
 		index = len(podSpec.Containers)
 		podSpec.Containers = append(podSpec.Containers, corev1.Container{})
 	}
-	// Configuring the arguments of the container,
-	// taking in consideration the extra args from the user-space.
-	args := map[string]string{}
-
-	if tenantControlPlane.Spec.ControlPlane.Deployment.ExtraArgs != nil {
-		args = utilities.ArgsFromSliceToMap(tenantControlPlane.Spec.ControlPlane.Deployment.ExtraArgs.ControllerManager)
-	}
 
 	kubeconfig := "/etc/kubernetes/controller-manager.conf"
 
-	args["--allocate-node-cidrs"] = "true"
-	args["--authentication-kubeconfig"] = kubeconfig
-	args["--authorization-kubeconfig"] = kubeconfig
-	args["--bind-address"] = "0.0.0.0"
-	args["--client-ca-file"] = path.Join(v1beta3.DefaultCertificatesDir, constants.CACertName)
-	args["--cluster-name"] = tenantControlPlane.GetName()
-	args["--cluster-signing-cert-file"] = path.Join(v1beta3.DefaultCertificatesDir, constants.CACertName)
-	args["--cluster-signing-key-file"] = path.Join(v1beta3.DefaultCertificatesDir, constants.CAKeyName)
-	args["--controllers"] = "*,bootstrapsigner,tokencleaner"
-	args["--kubeconfig"] = kubeconfig
-	args["--leader-elect"] = "true"
-	args["--service-cluster-ip-range"] = tenantControlPlane.Spec.NetworkProfile.ServiceCIDR
-	args["--cluster-cidr"] = tenantControlPlane.Spec.NetworkProfile.PodCIDR
-	args["--requestheader-client-ca-file"] = path.Join(v1beta3.DefaultCertificatesDir, constants.FrontProxyCACertName)
-	args["--root-ca-file"] = path.Join(v1beta3.DefaultCertificatesDir, constants.CACertName)
-	args["--service-account-private-key-file"] = path.Join(v1beta3.DefaultCertificatesDir, constants.ServiceAccountPrivateKeyName)
-	args["--use-service-account-credentials"] = "true"
+	args := map[string]string{
+		"--allocate-node-cidrs":              "true",
+		"--authentication-kubeconfig":        kubeconfig,
+		"--authorization-kubeconfig":         kubeconfig,
+		"--bind-address":                     "0.0.0.0",
+		"--client-ca-file":                   path.Join(v1beta3.DefaultCertificatesDir, constants.CACertName),
+		"--cluster-name":                     tenantControlPlane.GetName(),
+		"--cluster-signing-cert-file":        path.Join(v1beta3.DefaultCertificatesDir, constants.CACertName),
+		"--cluster-signing-key-file":         path.Join(v1beta3.DefaultCertificatesDir, constants.CAKeyName),
+		"--controllers":                      "*,bootstrapsigner,tokencleaner",
+		"--kubeconfig":                       kubeconfig,
+		"--leader-elect":                     "true",
+		"--service-cluster-ip-range":         tenantControlPlane.Spec.NetworkProfile.ServiceCIDR,
+		"--cluster-cidr":                     tenantControlPlane.Spec.NetworkProfile.PodCIDR,
+		"--requestheader-client-ca-file":     path.Join(v1beta3.DefaultCertificatesDir, constants.FrontProxyCACertName),
+		"--root-ca-file":                     path.Join(v1beta3.DefaultCertificatesDir, constants.CACertName),
+		"--service-account-private-key-file": path.Join(v1beta3.DefaultCertificatesDir, constants.ServiceAccountPrivateKeyName),
+		"--use-service-account-credentials":  "true",
+	}
+
+	if extraArgs := tenantControlPlane.Spec.ControlPlane.Deployment.ExtraArgs; extraArgs != nil && len(extraArgs.ControllerManager) > 0 {
+		args = utilities.MergeMaps(args, utilities.ArgsFromSliceToMap(extraArgs.ControllerManager))
+	}
 
 	podSpec.Containers[index].Name = "kube-controller-manager"
 	podSpec.Containers[index].Image = tenantControlPlane.Spec.ControlPlane.Deployment.RegistrySettings.KubeControllerManagerImage(tenantControlPlane.Spec.Kubernetes.Version)
@@ -447,7 +451,7 @@ func (d Deployment) buildControllerManager(podSpec *corev1.PodSpec, tenantContro
 		ProbeHandler: corev1.ProbeHandler{
 			HTTPGet: &corev1.HTTPGetAction{
 				Path:   "/healthz",
-				Port:   intstr.FromInt(10257),
+				Port:   intstr.FromInt32(10257),
 				Scheme: corev1.URISchemeHTTPS,
 			},
 		},
@@ -461,7 +465,7 @@ func (d Deployment) buildControllerManager(podSpec *corev1.PodSpec, tenantContro
 		ProbeHandler: corev1.ProbeHandler{
 			HTTPGet: &corev1.HTTPGetAction{
 				Path:   "/healthz",
-				Port:   intstr.FromInt(10257),
+				Port:   intstr.FromInt32(10257),
 				Scheme: corev1.URISchemeHTTPS,
 			},
 		},
@@ -564,7 +568,7 @@ func (d Deployment) buildKubeAPIServer(podSpec *corev1.PodSpec, tenantControlPla
 		ProbeHandler: corev1.ProbeHandler{
 			HTTPGet: &corev1.HTTPGetAction{
 				Path:   "/livez",
-				Port:   intstr.FromInt(int(tenantControlPlane.Spec.NetworkProfile.Port)),
+				Port:   intstr.FromInt32(tenantControlPlane.Spec.NetworkProfile.Port),
 				Scheme: corev1.URISchemeHTTPS,
 			},
 		},
@@ -578,7 +582,7 @@ func (d Deployment) buildKubeAPIServer(podSpec *corev1.PodSpec, tenantControlPla
 		ProbeHandler: corev1.ProbeHandler{
 			HTTPGet: &corev1.HTTPGetAction{
 				Path:   "/readyz",
-				Port:   intstr.FromInt(int(tenantControlPlane.Spec.NetworkProfile.Port)),
+				Port:   intstr.FromInt32(tenantControlPlane.Spec.NetworkProfile.Port),
 				Scheme: corev1.URISchemeHTTPS,
 			},
 		},
@@ -592,7 +596,7 @@ func (d Deployment) buildKubeAPIServer(podSpec *corev1.PodSpec, tenantControlPla
 		ProbeHandler: corev1.ProbeHandler{
 			HTTPGet: &corev1.HTTPGetAction{
 				Path:   "/livez",
-				Port:   intstr.FromInt(int(tenantControlPlane.Spec.NetworkProfile.Port)),
+				Port:   intstr.FromInt32(tenantControlPlane.Spec.NetworkProfile.Port),
 				Scheme: corev1.URISchemeHTTPS,
 			},
 		},
@@ -712,11 +716,29 @@ func (d Deployment) buildKubeAPIServerCommand(tenantControlPlane kamajiv1alpha1.
 		desiredArgs["--etcd-keyfile"] = "/etc/kubernetes/pki/etcd/server.key"
 	}
 
+	if len(d.DataStoreOverrides) != 0 {
+		desiredArgs["--etcd-servers-overrides"] = d.etcdServersOverrides()
+	}
+
 	// Order matters, here: extraArgs could try to overwrite some arguments managed by Kamaji and that would be crucial.
 	// Adding as first element of the array of maps, we're sure that these overrides will be sanitized by our configuration.
 	return utilities.MergeMaps(current, desiredArgs, extraArgs)
 }
 
+func (d Deployment) etcdServersOverrides() string {
+	dataStoreOverridesEndpoints := make([]string, 0, len(d.DataStoreOverrides))
+	for _, dso := range d.DataStoreOverrides {
+		httpsEndpoints := make([]string, 0, len(dso.DataStore.Spec.Endpoints))
+
+		for _, ep := range dso.DataStore.Spec.Endpoints {
+			httpsEndpoints = append(httpsEndpoints, fmt.Sprintf("https://%s", ep))
+		}
+		dataStoreOverridesEndpoints = append(dataStoreOverridesEndpoints, fmt.Sprintf("%s#%s", dso.Resource, strings.Join(httpsEndpoints, ";")))
+	}
+
+	return strings.Join(dataStoreOverridesEndpoints, ",")
+}
+
 func (d Deployment) secretProjection(secretName, certKeyName, keyName string) *corev1.SecretProjection {
 	return &corev1.SecretProjection{
 		LocalObjectReference: corev1.LocalObjectReference{
@@ -999,7 +1021,7 @@ func (d Deployment) templateLabels(ctx context.Context, tenantControlPlane *kama
 func (d Deployment) secretHashValue(ctx context.Context, client client.Client, namespace, name string) (string, error) {
 	secret := &corev1.Secret{}
 	if err := client.Get(ctx, types.NamespacedName{Namespace: namespace, Name: name}, secret); err != nil {
-		return "", errors.Wrap(err, "cannot retrieve *corev1.Secret for resource version retrieval")
+		return "", fmt.Errorf("cannot retrieve *corev1.Secret for resource version retrieval: %w", err)
 	}
 
 	return d.hashValue(*secret), nil

internal/builders/controlplane/deployment_test.go

@@ -0,0 +1,46 @@
+// Copyright 2022 Clastix Labs
+// SPDX-License-Identifier: Apache-2.0
+
+package controlplane
+
+import (
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+
+	kamajiv1alpha1 "github.com/clastix/kamaji/api/v1alpha1"
+)
+
+var _ = Describe("Controlplane Deployment", func() {
+	var d Deployment
+	BeforeEach(func() {
+		d = Deployment{
+			DataStoreOverrides: []DataStoreOverrides{{
+				Resource: "/events",
+				DataStore: kamajiv1alpha1.DataStore{
+					Spec: kamajiv1alpha1.DataStoreSpec{
+						Endpoints: kamajiv1alpha1.Endpoints{"etcd-0", "etcd-1", "etcd-2"},
+					},
+				},
+			}},
+		}
+	})
+
+	Describe("DataStoreOverrides flag generation", func() {
+		It("should generate valid --etcd-servers-overrides value", func() {
+			etcdSerVersOverrides := d.etcdServersOverrides()
+			Expect(etcdSerVersOverrides).To(Equal("/events#https://etcd-0;https://etcd-1;https://etcd-2"))
+		})
+		It("should generate valid --etcd-servers-overrides value with 2 DataStoreOverrides", func() {
+			d.DataStoreOverrides = append(d.DataStoreOverrides, DataStoreOverrides{
+				Resource: "/pods",
+				DataStore: kamajiv1alpha1.DataStore{
+					Spec: kamajiv1alpha1.DataStoreSpec{
+						Endpoints: kamajiv1alpha1.Endpoints{"etcd-3", "etcd-4", "etcd-5"},
+					},
+				},
+			})
+			etcdSerVersOverrides := d.etcdServersOverrides()
+			Expect(etcdSerVersOverrides).To(Equal("/events#https://etcd-0;https://etcd-1;https://etcd-2,/pods#https://etcd-3;https://etcd-4;https://etcd-5"))
+		})
+	})
+})

internal/builders/controlplane/konnectivity_server.go

@@ -6,6 +6,7 @@ package controlplane
 import (
 	"fmt"
 
+	"github.com/blang/semver"
 	appsv1 "k8s.io/api/apps/v1"
 	corev1 "k8s.io/api/core/v1"
 	"k8s.io/apimachinery/pkg/runtime"
@@ -33,7 +34,20 @@ type Konnectivity struct {
 	Scheme runtime.Scheme
 }
 
-func (k Konnectivity) buildKonnectivityContainer(addon *kamajiv1alpha1.KonnectivitySpec, replicas int32, podSpec *corev1.PodSpec) {
+func (k Konnectivity) serverVersion(tcpVersion, addonVersion string) string {
+	if addonVersion != "" {
+		return addonVersion
+	}
+
+	version, parsedErr := semver.ParseTolerant(tcpVersion)
+	if parsedErr != nil {
+		return ""
+	}
+
+	return fmt.Sprintf("v0.%d.0", version.Minor)
+}
+
+func (k Konnectivity) buildKonnectivityContainer(tcpVersion string, addon *kamajiv1alpha1.KonnectivitySpec, replicas int32, podSpec *corev1.PodSpec) {
 	found, index := utilities.HasNamedContainer(podSpec.Containers, konnectivityServerName)
 	if !found {
 		index = len(podSpec.Containers)
@@ -41,7 +55,7 @@ func (k Konnectivity) buildKonnectivityContainer(addon *kamajiv1alpha1.Konnectiv
 	}
 
 	podSpec.Containers[index].Name = konnectivityServerName
-	podSpec.Containers[index].Image = fmt.Sprintf("%s:%s", addon.KonnectivityServerSpec.Image, addon.KonnectivityServerSpec.Version)
+	podSpec.Containers[index].Image = fmt.Sprintf("%s:%s", addon.KonnectivityServerSpec.Image, k.serverVersion(tcpVersion, addon.KonnectivityServerSpec.Version))
 	podSpec.Containers[index].Command = []string{"/proxy-server"}
 
 	args := utilities.ArgsFromSliceToMap(addon.KonnectivityServerSpec.ExtraArgs)
@@ -70,7 +84,7 @@ func (k Konnectivity) buildKonnectivityContainer(addon *kamajiv1alpha1.Konnectiv
 		ProbeHandler: corev1.ProbeHandler{
 			HTTPGet: &corev1.HTTPGetAction{
 				Path:   "/healthz",
-				Port:   intstr.FromInt(8134),
+				Port:   intstr.FromInt32(8134),
 				Scheme: corev1.URISchemeHTTP,
 			},
 		},
@@ -254,7 +268,7 @@ func (k Konnectivity) buildVolumes(status kamajiv1alpha1.KonnectivityStatus, pod
 }
 
 func (k Konnectivity) Build(deployment *appsv1.Deployment, tenantControlPlane kamajiv1alpha1.TenantControlPlane) {
-	k.buildKonnectivityContainer(tenantControlPlane.Spec.Addons.Konnectivity, *tenantControlPlane.Spec.ControlPlane.Deployment.Replicas, &deployment.Spec.Template.Spec)
+	k.buildKonnectivityContainer(tenantControlPlane.Spec.Kubernetes.Version, tenantControlPlane.Spec.Addons.Konnectivity, *tenantControlPlane.Spec.ControlPlane.Deployment.Replicas, &deployment.Spec.Template.Spec)
 	k.buildVolumeMounts(&deployment.Spec.Template.Spec)
 	k.buildVolumes(tenantControlPlane.Status.Addons.Konnectivity, &deployment.Spec.Template.Spec)
 

internal/crypto/crypto.go

@@ -17,12 +17,11 @@ import (
 	"net"
 	"time"
 
-	"github.com/pkg/errors"
 	"k8s.io/apimachinery/pkg/util/sets"
 )
 
 // CheckPublicAndPrivateKeyValidity checks if the given bytes for the private and public keys are valid.
-func CheckPublicAndPrivateKeyValidity(publicKey []byte, privateKey []byte) (bool, error) {
+func CheckPublicAndPrivateKeyValidity(publicKey, privateKey []byte) (bool, error) {
 	if len(publicKey) == 0 || len(privateKey) == 0 {
 		return false, nil
 	}
@@ -74,12 +73,12 @@ func CheckCertificateNamesAndIPs(certificateBytes []byte, entries []string) (boo
 }
 
 // CheckCertificateAndPrivateKeyPairValidity checks if the certificate and private key pair are valid.
-func CheckCertificateAndPrivateKeyPairValidity(certificate []byte, privateKey []byte) (bool, error) {
+func CheckCertificateAndPrivateKeyPairValidity(certificate, privateKey []byte, threshold time.Duration) (bool, error) {
 	switch {
 	case len(certificate) == 0, len(privateKey) == 0:
 		return false, nil
 	default:
-		return IsValidCertificateKeyPairBytes(certificate, privateKey)
+		return IsValidCertificateKeyPairBytes(certificate, privateKey, threshold)
 	}
 }
 
@@ -93,7 +92,7 @@ func GenerateCertificatePrivateKeyPair(template *x509.Certificate, caCertificate
 
 	caPrivKeyBytes, err := ParsePrivateKeyBytes(caPrivateKey)
 	if err != nil {
-		return nil, nil, errors.Wrap(err, "provided CA private key for certificate generation cannot be parsed")
+		return nil, nil, fmt.Errorf("provided CA private key for certificate generation cannot be parsed: %w", err)
 	}
 
 	return generateCertificateKeyPairBytes(template, caCertBytes, caPrivKeyBytes)
@@ -108,7 +107,7 @@ func ParseCertificateBytes(content []byte) (*x509.Certificate, error) {
 
 	crt, err := x509.ParseCertificate(pemContent.Bytes)
 	if err != nil {
-		return nil, errors.Wrap(err, "cannot parse x509 Certificate")
+		return nil, fmt.Errorf("cannot parse x509 Certificate: %w", err)
 	}
 
 	return crt, nil
@@ -124,7 +123,7 @@ func ParsePrivateKeyBytes(content []byte) (crypto.Signer, error) {
 	if pemContent.Type == "EC PRIVATE KEY" {
 		privateKey, err := x509.ParseECPrivateKey(pemContent.Bytes)
 		if err != nil {
-			return nil, errors.Wrap(err, "cannot parse EC Private Key")
+			return nil, fmt.Errorf("cannot parse EC Private Key: %w", err)
 		}
 
 		return privateKey, nil
@@ -132,7 +131,7 @@ func ParsePrivateKeyBytes(content []byte) (crypto.Signer, error) {
 
 	privateKey, err := x509.ParsePKCS1PrivateKey(pemContent.Bytes)
 	if err != nil {
-		return nil, errors.Wrap(err, "cannot parse PKCS1 Private Key")
+		return nil, fmt.Errorf("cannot parse PKCS1 Private Key: %w", err)
 	}
 
 	return privateKey, nil
@@ -159,7 +158,7 @@ func ParsePublicKeyBytes(content []byte) (*rsa.PublicKey, error) {
 }
 
 // IsValidCertificateKeyPairBytes checks if the certificate matches the private key bounded to it.
-func IsValidCertificateKeyPairBytes(certificateBytes []byte, privateKeyBytes []byte) (bool, error) {
+func IsValidCertificateKeyPairBytes(certificateBytes, privateKeyBytes []byte, expirationThreshold time.Duration) (bool, error) {
 	crt, err := ParseCertificateBytes(certificateBytes)
 	if err != nil {
 		return false, err
@@ -171,7 +170,7 @@ func IsValidCertificateKeyPairBytes(certificateBytes []byte, privateKeyBytes []b
 	}
 
 	switch {
-	case !checkCertificateValidity(*crt):
+	case !checkCertificateValidity(*crt, expirationThreshold):
 		return false, nil
 	case !checkPublicKeys(crt.PublicKey, key):
 		return false, nil
@@ -209,12 +208,12 @@ func VerifyCertificate(cert, ca []byte, usages ...x509.ExtKeyUsage) (bool, error
 func generateCertificateKeyPairBytes(template *x509.Certificate, caCert *x509.Certificate, caKey crypto.Signer) (*bytes.Buffer, *bytes.Buffer, error) {
 	certPrivKey, err := rsa.GenerateKey(cryptorand.Reader, 2048)
 	if err != nil {
-		return nil, nil, errors.Wrap(err, "cannot generate an RSA key")
+		return nil, nil, fmt.Errorf("cannot generate an RSA key: %w", err)
 	}
 
 	certBytes, err := x509.CreateCertificate(cryptorand.Reader, template, caCert, &certPrivKey.PublicKey, caKey)
 	if err != nil {
-		return nil, nil, errors.Wrap(err, "cannot create the certificate")
+		return nil, nil, fmt.Errorf("cannot create the certificate: %w", err)
 	}
 
 	certPEM := &bytes.Buffer{}
@@ -223,7 +222,7 @@ func generateCertificateKeyPairBytes(template *x509.Certificate, caCert *x509.Ce
 		Headers: nil,
 		Bytes:   certBytes,
 	}); err != nil {
-		return nil, nil, errors.Wrap(err, "cannot encode the generate certificate bytes")
+		return nil, nil, fmt.Errorf("cannot encode the generate certificate bytes: %w", err)
 	}
 
 	certPrivKeyPEM := &bytes.Buffer{}
@@ -232,15 +231,15 @@ func generateCertificateKeyPairBytes(template *x509.Certificate, caCert *x509.Ce
 		Headers: nil,
 		Bytes:   x509.MarshalPKCS1PrivateKey(certPrivKey),
 	}); err != nil {
-		return nil, nil, errors.Wrap(err, "cannot encode private key")
+		return nil, nil, fmt.Errorf("cannot encode private key: %w", err)
 	}
 
 	return certPEM, certPrivKeyPEM, nil
 }
 
-func checkCertificateValidity(cert x509.Certificate) bool {
+func checkCertificateValidity(cert x509.Certificate, threshold time.Duration) bool {
 	// Avoiding waiting for the exact expiration date by creating a one-day gap
-	notAfter := cert.NotAfter.After(time.Now().AddDate(0, 0, 1))
+	notAfter := cert.NotAfter.After(time.Now().Add(threshold))
 	notBefore := cert.NotBefore.Before(time.Now())
 
 	return notAfter && notBefore