feat!: write permissions (#937)

* fix: decoding object only if requested

Signed-off-by: Dario Tranchitella <dario@tranchitella.eu>

* feat(api): limiting write permissions

Signed-off-by: Dario Tranchitella <dario@tranchitella.eu>

* feat: write permissions handlers, routes, and controller

Signed-off-by: Dario Tranchitella <dario@tranchitella.eu>

* docs: write permissions

Signed-off-by: Dario Tranchitella <dario@tranchitella.eu>

---------

Signed-off-by: Dario Tranchitella <dario@tranchitella.eu>

.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@v5
+      - 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@v5
+      - 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@v5
         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/**'
@@ -35,13 +35,12 @@ jobs:
     name: Kubernetes
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         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
       - run: |
           sudo apt-get update
           sudo apt-get install -y golang-cfssl

.github/workflows/helm.yaml

@@ -11,16 +11,19 @@ jobs:
     name: diff
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         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@v5
       - 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@v5
       - 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@v5
         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@v5
+        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

@@ -8,8 +8,9 @@ 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. |
 | 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). |

Makefile

@@ -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.
 
@@ -242,6 +251,7 @@ env: kind
 
 .PHONY: e2e
 e2e: env build load helm ginkgo cert-manager ## 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/kubeconfiggenerator_types.go

@@ -0,0 +1,91 @@
+// 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 {
+	// 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

@@ -8,6 +8,7 @@ import (
 	"fmt"
 	"net"
 	"strconv"
+	"strings"
 
 	"github.com/pkg/errors"
 	corev1 "k8s.io/api/core/v1"
@@ -95,3 +96,17 @@ 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_status.go

@@ -189,12 +189,14 @@ type KubernetesStatus struct {
 	Ingress    *KubernetesIngressStatus   `json:"ingress,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"

api/v1alpha1/tenantcontrolplane_types.go

@@ -226,7 +226,9 @@ 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
@@ -250,13 +252,21 @@ type KonnectivityAgentSpec struct {
 	//+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
@@ -269,9 +279,9 @@ type KonnectivityAgentSpec struct {
 
 // 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 +297,36 @@ 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
+}
+
 // 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 +339,14 @@ 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"`
+	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

@@ -289,6 +289,21 @@ 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
@@ -951,6 +966,123 @@ 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
@@ -1153,6 +1285,21 @@ 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
@@ -1317,6 +1464,7 @@ 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
 	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 +1,37 @@
+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+edge
+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: added
+      description: First commit

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+edge](https://img.shields.io/badge/Version-0.0.0+edge-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 +1,288 @@
+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:
+              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 +1,214 @@
+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
+              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 +1,11 @@
+- apiGroups:
+    - ""
+  resources:
+    - namespaces
+  verbs:
+    - get
+    - list
+    - watch
 - apiGroups:
     - apps
   resources:
@@ -51,6 +59,7 @@
     - kamaji.clastix.io
   resources:
     - datastores/status
+    - kubeconfiggenerators/status
     - tenantcontrolplanes/status
   verbs:
     - get
@@ -59,6 +68,18 @@
 - 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_kubeconfiggenerators.yaml

@@ -0,0 +1,222 @@
+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: v0.16.1
+  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
+                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/kamaji.clastix.io_tenantcontrolplanes.yaml

@@ -97,7 +97,6 @@ spec:
                           default:
                             image: registry.k8s.io/kas-network-proxy/proxy-agent
                             mode: DaemonSet
-                            version: v0.28.6
                           properties:
                             extraArgs:
                               description: |-
@@ -108,6 +107,14 @@ spec:
                               items:
                                 type: string
                               type: array
+                            hostNetwork:
+                              default: false
+                              description: |-
+                                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.
+                              type: boolean
                             image:
                               default: registry.k8s.io/kas-network-proxy/proxy-agent
                               description: AgentImage defines the container image for Konnectivity's agent.
@@ -170,8 +177,11 @@ spec:
                                 type: object
                               type: array
                             version:
-                              default: v0.28.6
-                              description: Version for Konnectivity agent.
+                              description: |-
+                                Version for Konnectivity agent.
+                                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.
                               type: string
                           type: object
                           x-kubernetes-validations:
@@ -181,7 +191,6 @@ spec:
                           default:
                             image: registry.k8s.io/kas-network-proxy/proxy-server
                             port: 8132
-                            version: v0.28.6
                           properties:
                             extraArgs:
                               description: |-
@@ -208,7 +217,7 @@ spec:
                                     Claims lists the names of resources, defined in spec.resourceClaims,
                                     that are used by this container.
 
-                                    This is an alpha field and requires enabling the
+                                    This field depends on the
                                     DynamicResourceAllocation feature gate.
 
                                     This field is immutable. It can only be set for containers.
@@ -260,8 +269,11 @@ spec:
                                   type: object
                               type: object
                             version:
-                              default: v0.28.6
-                              description: Container image version of the Konnectivity server.
+                              description: |-
+                                Container image version of the Konnectivity server.
+                                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.
                               type: string
                           required:
                             - port
@@ -333,7 +345,9 @@ spec:
                                   description: EnvVar represents an environment variable present in a Container.
                                   properties:
                                     name:
-                                      description: Name of the environment variable. Must be a C_IDENTIFIER.
+                                      description: |-
+                                        Name of the environment variable.
+                                        May consist of any printable ASCII characters except '='.
                                       type: string
                                     value:
                                       description: |-
@@ -387,6 +401,42 @@ spec:
                                             - fieldPath
                                           type: object
                                           x-kubernetes-map-type: atomic
+                                        fileKeyRef:
+                                          description: |-
+                                            FileKeyRef selects a key of the env file.
+                                            Requires the EnvFiles feature gate to be enabled.
+                                          properties:
+                                            key:
+                                              description: |-
+                                                The key within the env file. An invalid key will prevent the pod from starting.
+                                                The keys defined within a source may consist of any printable ASCII characters except '='.
+                                                During Alpha stage of the EnvFiles feature gate, the key size is limited to 128 characters.
+                                              type: string
+                                            optional:
+                                              default: false
+                                              description: |-
+                                                Specify whether the file or its key must be defined. If the file or key
+                                                does not exist, then the env var is not published.
+                                                If optional is set to true and the specified key does not exist,
+                                                the environment variable will not be set in the Pod's containers.
+
+                                                If optional is set to false and the specified key does not exist,
+                                                an error will be returned during Pod creation.
+                                              type: boolean
+                                            path:
+                                              description: |-
+                                                The path within the volume from which to select the file.
+                                                Must be relative and may not contain the '..' path or start with '..'.
+                                              type: string
+                                            volumeName:
+                                              description: The name of the volume mount containing the env file.
+                                              type: string
+                                          required:
+                                            - key
+                                            - path
+                                            - volumeName
+                                          type: object
+                                          x-kubernetes-map-type: atomic
                                         resourceFieldRef:
                                           description: |-
                                             Selects a resource of the container: only resources limits and requests
@@ -442,8 +492,8 @@ spec:
                               envFrom:
                                 description: |-
                                   List of sources to populate environment variables in the container.
-                                  The keys defined within a source must be a C_IDENTIFIER. All invalid keys
-                                  will be reported as an event when the container is starting. When a key exists in multiple
+                                  The keys defined within a source may consist of any printable ASCII characters except '='.
+                                  When a key exists in multiple
                                   sources, the value associated with the last source will take precedence.
                                   Values defined by an Env with a duplicate key will take precedence.
                                   Cannot be updated.
@@ -468,7 +518,9 @@ spec:
                                       type: object
                                       x-kubernetes-map-type: atomic
                                     prefix:
-                                      description: Optional text to prepend to the name of each environment variable. Must be a C_IDENTIFIER.
+                                      description: |-
+                                        Optional text to prepend to the name of each environment variable.
+                                        May consist of any printable ASCII characters except '='.
                                       type: string
                                     secretRef:
                                       description: The Secret to select from
@@ -1113,7 +1165,7 @@ spec:
                                       Claims lists the names of resources, defined in spec.resourceClaims,
                                       that are used by this container.
 
-                                      This is an alpha field and requires enabling the
+                                      This field depends on the
                                       DynamicResourceAllocation feature gate.
 
                                       This field is immutable. It can only be set for containers.
@@ -1167,10 +1219,10 @@ spec:
                               restartPolicy:
                                 description: |-
                                   RestartPolicy defines the restart behavior of individual containers in a pod.
-                                  This field may only be set for init containers, and the only allowed value is "Always".
-                                  For non-init containers or when this field is not specified,
+                                  This overrides the pod-level restart policy. When this field is not specified,
                                   the restart behavior is defined by the Pod's restart policy and the container type.
-                                  Setting the RestartPolicy as "Always" for the init container will have the following effect:
+                                  Additionally, setting the RestartPolicy as "Always" for the init container will
+                                  have the following effect:
                                   this init container will be continually restarted on
                                   exit until all regular containers have terminated. Once all regular
                                   containers have completed, all init containers with restartPolicy "Always"
@@ -1182,6 +1234,57 @@ spec:
                                   init container is started, or after any startupProbe has successfully
                                   completed.
                                 type: string
+                              restartPolicyRules:
+                                description: |-
+                                  Represents a list of rules to be checked to determine if the
+                                  container should be restarted on exit. The rules are evaluated in
+                                  order. Once a rule matches a container exit condition, the remaining
+                                  rules are ignored. If no rule matches the container exit condition,
+                                  the Container-level restart policy determines the whether the container
+                                  is restarted or not. Constraints on the rules:
+                                  - At most 20 rules are allowed.
+                                  - Rules can have the same action.
+                                  - Identical rules are not forbidden in validations.
+                                  When rules are specified, container MUST set RestartPolicy explicitly
+                                  even it if matches the Pod's RestartPolicy.
+                                items:
+                                  description: ContainerRestartRule describes how a container exit is handled.
+                                  properties:
+                                    action:
+                                      description: |-
+                                        Specifies the action taken on a container exit if the requirements
+                                        are satisfied. The only possible value is "Restart" to restart the
+                                        container.
+                                      type: string
+                                    exitCodes:
+                                      description: Represents the exit codes to check on container exits.
+                                      properties:
+                                        operator:
+                                          description: |-
+                                            Represents the relationship between the container exit code(s) and the
+                                            specified values. Possible values are:
+                                            - In: the requirement is satisfied if the container exit code is in the
+                                              set of specified values.
+                                            - NotIn: the requirement is satisfied if the container exit code is
+                                              not in the set of specified values.
+                                          type: string
+                                        values:
+                                          description: |-
+                                            Specifies the set of values to check for container exit codes.
+                                            At most 255 elements are allowed.
+                                          items:
+                                            format: int32
+                                            type: integer
+                                          type: array
+                                          x-kubernetes-list-type: set
+                                      required:
+                                        - operator
+                                      type: object
+                                  required:
+                                    - action
+                                  type: object
+                                type: array
+                                x-kubernetes-list-type: atomic
                               securityContext:
                                 description: |-
                                   SecurityContext defines the security options the container should be run with.
@@ -1704,7 +1807,9 @@ spec:
                                   description: EnvVar represents an environment variable present in a Container.
                                   properties:
                                     name:
-                                      description: Name of the environment variable. Must be a C_IDENTIFIER.
+                                      description: |-
+                                        Name of the environment variable.
+                                        May consist of any printable ASCII characters except '='.
                                       type: string
                                     value:
                                       description: |-
@@ -1758,6 +1863,42 @@ spec:
                                             - fieldPath
                                           type: object
                                           x-kubernetes-map-type: atomic
+                                        fileKeyRef:
+                                          description: |-
+                                            FileKeyRef selects a key of the env file.
+                                            Requires the EnvFiles feature gate to be enabled.
+                                          properties:
+                                            key:
+                                              description: |-
+                                                The key within the env file. An invalid key will prevent the pod from starting.
+                                                The keys defined within a source may consist of any printable ASCII characters except '='.
+                                                During Alpha stage of the EnvFiles feature gate, the key size is limited to 128 characters.
+                                              type: string
+                                            optional:
+                                              default: false
+                                              description: |-
+                                                Specify whether the file or its key must be defined. If the file or key
+                                                does not exist, then the env var is not published.
+                                                If optional is set to true and the specified key does not exist,
+                                                the environment variable will not be set in the Pod's containers.
+
+                                                If optional is set to false and the specified key does not exist,
+                                                an error will be returned during Pod creation.
+                                              type: boolean
+                                            path:
+                                              description: |-
+                                                The path within the volume from which to select the file.
+                                                Must be relative and may not contain the '..' path or start with '..'.
+                                              type: string
+                                            volumeName:
+                                              description: The name of the volume mount containing the env file.
+                                              type: string
+                                          required:
+                                            - key
+                                            - path
+                                            - volumeName
+                                          type: object
+                                          x-kubernetes-map-type: atomic
                                         resourceFieldRef:
                                           description: |-
                                             Selects a resource of the container: only resources limits and requests
@@ -1813,8 +1954,8 @@ spec:
                               envFrom:
                                 description: |-
                                   List of sources to populate environment variables in the container.
-                                  The keys defined within a source must be a C_IDENTIFIER. All invalid keys
-                                  will be reported as an event when the container is starting. When a key exists in multiple
+                                  The keys defined within a source may consist of any printable ASCII characters except '='.
+                                  When a key exists in multiple
                                   sources, the value associated with the last source will take precedence.
                                   Values defined by an Env with a duplicate key will take precedence.
                                   Cannot be updated.
@@ -1839,7 +1980,9 @@ spec:
                                       type: object
                                       x-kubernetes-map-type: atomic
                                     prefix:
-                                      description: Optional text to prepend to the name of each environment variable. Must be a C_IDENTIFIER.
+                                      description: |-
+                                        Optional text to prepend to the name of each environment variable.
+                                        May consist of any printable ASCII characters except '='.
                                       type: string
                                     secretRef:
                                       description: The Secret to select from
@@ -2484,7 +2627,7 @@ spec:
                                       Claims lists the names of resources, defined in spec.resourceClaims,
                                       that are used by this container.
 
-                                      This is an alpha field and requires enabling the
+                                      This field depends on the
                                       DynamicResourceAllocation feature gate.
 
                                       This field is immutable. It can only be set for containers.
@@ -2538,10 +2681,10 @@ spec:
                               restartPolicy:
                                 description: |-
                                   RestartPolicy defines the restart behavior of individual containers in a pod.
-                                  This field may only be set for init containers, and the only allowed value is "Always".
-                                  For non-init containers or when this field is not specified,
+                                  This overrides the pod-level restart policy. When this field is not specified,
                                   the restart behavior is defined by the Pod's restart policy and the container type.
-                                  Setting the RestartPolicy as "Always" for the init container will have the following effect:
+                                  Additionally, setting the RestartPolicy as "Always" for the init container will
+                                  have the following effect:
                                   this init container will be continually restarted on
                                   exit until all regular containers have terminated. Once all regular
                                   containers have completed, all init containers with restartPolicy "Always"
@@ -2553,6 +2696,57 @@ spec:
                                   init container is started, or after any startupProbe has successfully
                                   completed.
                                 type: string
+                              restartPolicyRules:
+                                description: |-
+                                  Represents a list of rules to be checked to determine if the
+                                  container should be restarted on exit. The rules are evaluated in
+                                  order. Once a rule matches a container exit condition, the remaining
+                                  rules are ignored. If no rule matches the container exit condition,
+                                  the Container-level restart policy determines the whether the container
+                                  is restarted or not. Constraints on the rules:
+                                  - At most 20 rules are allowed.
+                                  - Rules can have the same action.
+                                  - Identical rules are not forbidden in validations.
+                                  When rules are specified, container MUST set RestartPolicy explicitly
+                                  even it if matches the Pod's RestartPolicy.
+                                items:
+                                  description: ContainerRestartRule describes how a container exit is handled.
+                                  properties:
+                                    action:
+                                      description: |-
+                                        Specifies the action taken on a container exit if the requirements
+                                        are satisfied. The only possible value is "Restart" to restart the
+                                        container.
+                                      type: string
+                                    exitCodes:
+                                      description: Represents the exit codes to check on container exits.
+                                      properties:
+                                        operator:
+                                          description: |-
+                                            Represents the relationship between the container exit code(s) and the
+                                            specified values. Possible values are:
+                                            - In: the requirement is satisfied if the container exit code is in the
+                                              set of specified values.
+                                            - NotIn: the requirement is satisfied if the container exit code is
+                                              not in the set of specified values.
+                                          type: string
+                                        values:
+                                          description: |-
+                                            Specifies the set of values to check for container exit codes.
+                                            At most 255 elements are allowed.
+                                          items:
+                                            format: int32
+                                            type: integer
+                                          type: array
+                                          x-kubernetes-list-type: set
+                                      required:
+                                        - operator
+                                      type: object
+                                  required:
+                                    - action
+                                  type: object
+                                type: array
+                                x-kubernetes-list-type: atomic
                               securityContext:
                                 description: |-
                                   SecurityContext defines the security options the container should be run with.
@@ -3879,15 +4073,13 @@ spec:
                                               volumeAttributesClassName may be used to set the VolumeAttributesClass used by this claim.
                                               If specified, the CSI driver will create or update the volume with the attributes defined
                                               in the corresponding VolumeAttributesClass. This has a different purpose than storageClassName,
-                                              it can be changed after the claim is created. An empty string value means that no VolumeAttributesClass
-                                              will be applied to the claim but it's not allowed to reset this field to empty string once it is set.
-                                              If unspecified and the PersistentVolumeClaim is unbound, the default VolumeAttributesClass
-                                              will be set by the persistentvolume controller if it exists.
+                                              it can be changed after the claim is created. An empty string or nil value indicates that no
+                                              VolumeAttributesClass will be applied to the claim. If the claim enters an Infeasible error state,
+                                              this field can be reset to its previous value (including nil) to cancel the modification.
                                               If the resource referred to by volumeAttributesClass does not exist, this PersistentVolumeClaim will be
                                               set to a Pending state, as reflected by the modifyVolumeStatus field, until such as a resource
                                               exists.
                                               More info: https://kubernetes.io/docs/concepts/storage/volume-attributes-classes/
-                                              (Beta) Using this field requires the VolumeAttributesClass feature gate to be enabled (off by default).
                                             type: string
                                           volumeMode:
                                             description: |-
@@ -4061,12 +4253,9 @@ spec:
                                 description: |-
                                   glusterfs represents a Glusterfs mount on the host that shares a pod's lifetime.
                                   Deprecated: Glusterfs is deprecated and the in-tree glusterfs type is no longer supported.
-                                  More info: https://examples.k8s.io/volumes/glusterfs/README.md
                                 properties:
                                   endpoints:
-                                    description: |-
-                                      endpoints is the endpoint name that details Glusterfs topology.
-                                      More info: https://examples.k8s.io/volumes/glusterfs/README.md#create-a-pod
+                                    description: endpoints is the endpoint name that details Glusterfs topology.
                                     type: string
                                   path:
                                     description: |-
@@ -4145,7 +4334,7 @@ spec:
                                 description: |-
                                   iscsi represents an ISCSI Disk resource that is attached to a
                                   kubelet's host machine and then exposed to the pod.
-                                  More info: https://examples.k8s.io/volumes/iscsi/README.md
+                                  More info: https://kubernetes.io/docs/concepts/storage/volumes/#iscsi
                                 properties:
                                   chapAuthDiscovery:
                                     description: chapAuthDiscovery defines whether support iSCSI Discovery CHAP authentication
@@ -4535,6 +4724,110 @@ spec:
                                               type: array
                                               x-kubernetes-list-type: atomic
                                           type: object
+                                        podCertificate:
+                                          description: |-
+                                            Projects an auto-rotating credential bundle (private key and certificate
+                                            chain) that the pod can use either as a TLS client or server.
+
+                                            Kubelet generates a private key and uses it to send a
+                                            PodCertificateRequest to the named signer.  Once the signer approves the
+                                            request and issues a certificate chain, Kubelet writes the key and
+                                            certificate chain to the pod filesystem.  The pod does not start until
+                                            certificates have been issued for each podCertificate projected volume
+                                            source in its spec.
+
+                                            Kubelet will begin trying to rotate the certificate at the time indicated
+                                            by the signer using the PodCertificateRequest.Status.BeginRefreshAt
+                                            timestamp.
+
+                                            Kubelet can write a single file, indicated by the credentialBundlePath
+                                            field, or separate files, indicated by the keyPath and
+                                            certificateChainPath fields.
+
+                                            The credential bundle is a single file in PEM format.  The first PEM
+                                            entry is the private key (in PKCS#8 format), and the remaining PEM
+                                            entries are the certificate chain issued by the signer (typically,
+                                            signers will return their certificate chain in leaf-to-root order).
+
+                                            Prefer using the credential bundle format, since your application code
+                                            can read it atomically.  If you use keyPath and certificateChainPath,
+                                            your application must make two separate file reads. If these coincide
+                                            with a certificate rotation, it is possible that the private key and leaf
+                                            certificate you read may not correspond to each other.  Your application
+                                            will need to check for this condition, and re-read until they are
+                                            consistent.
+
+                                            The named signer controls chooses the format of the certificate it
+                                            issues; consult the signer implementation's documentation to learn how to
+                                            use the certificates it issues.
+                                          properties:
+                                            certificateChainPath:
+                                              description: |-
+                                                Write the certificate chain at this path in the projected volume.
+
+                                                Most applications should use credentialBundlePath.  When using keyPath
+                                                and certificateChainPath, your application needs to check that the key
+                                                and leaf certificate are consistent, because it is possible to read the
+                                                files mid-rotation.
+                                              type: string
+                                            credentialBundlePath:
+                                              description: |-
+                                                Write the credential bundle at this path in the projected volume.
+
+                                                The credential bundle is a single file that contains multiple PEM blocks.
+                                                The first PEM block is a PRIVATE KEY block, containing a PKCS#8 private
+                                                key.
+
+                                                The remaining blocks are CERTIFICATE blocks, containing the issued
+                                                certificate chain from the signer (leaf and any intermediates).
+
+                                                Using credentialBundlePath lets your Pod's application code make a single
+                                                atomic read that retrieves a consistent key and certificate chain.  If you
+                                                project them to separate files, your application code will need to
+                                                additionally check that the leaf certificate was issued to the key.
+                                              type: string
+                                            keyPath:
+                                              description: |-
+                                                Write the key at this path in the projected volume.
+
+                                                Most applications should use credentialBundlePath.  When using keyPath
+                                                and certificateChainPath, your application needs to check that the key
+                                                and leaf certificate are consistent, because it is possible to read the
+                                                files mid-rotation.
+                                              type: string
+                                            keyType:
+                                              description: |-
+                                                The type of keypair Kubelet will generate for the pod.
+
+                                                Valid values are "RSA3072", "RSA4096", "ECDSAP256", "ECDSAP384",
+                                                "ECDSAP521", and "ED25519".
+                                              type: string
+                                            maxExpirationSeconds:
+                                              description: |-
+                                                maxExpirationSeconds is the maximum lifetime permitted for the
+                                                certificate.
+
+                                                Kubelet copies this value verbatim into the PodCertificateRequests it
+                                                generates for this projection.
+
+                                                If omitted, kube-apiserver will set it to 86400(24 hours). kube-apiserver
+                                                will reject values shorter than 3600 (1 hour).  The maximum allowable
+                                                value is 7862400 (91 days).
+
+                                                The signer implementation is then free to issue a certificate with any
+                                                lifetime *shorter* than MaxExpirationSeconds, but no shorter than 3600
+                                                seconds (1 hour).  This constraint is enforced by kube-apiserver.
+                                                `kubernetes.io` signers will never issue certificates with a lifetime
+                                                longer than 24 hours.
+                                              format: int32
+                                              type: integer
+                                            signerName:
+                                              description: Kubelet's generated CSRs will be addressed to this signer.
+                                              type: string
+                                          required:
+                                            - keyType
+                                            - signerName
+                                          type: object
                                         secret:
                                           description: secret information about the secret data to project
                                           properties:
@@ -4664,7 +4957,6 @@ spec:
                                 description: |-
                                   rbd represents a Rados Block Device mount on the host that shares a pod's lifetime.
                                   Deprecated: RBD is deprecated and the in-tree rbd type is no longer supported.
-                                  More info: https://examples.k8s.io/volumes/rbd/README.md
                                 properties:
                                   fsType:
                                     description: |-
@@ -5482,8 +5774,8 @@ spec:
                                     most preferred is the one with the greatest sum of weights, i.e.
                                     for each node that meets all of the scheduling requirements (resource
                                     request, requiredDuringScheduling anti-affinity expressions, etc.),
-                                    compute a sum by iterating through the elements of this field and adding
-                                    "weight" to the sum if the node has pods which matches the corresponding podAffinityTerm; the
+                                    compute a sum by iterating through the elements of this field and subtracting
+                                    "weight" from the sum if the node has pods which matches the corresponding podAffinityTerm; the
                                     node(s) with the highest sum are the most preferred.
                                   items:
                                     description: The weights of all of the matched WeightedPodAffinityTerm fields are added per-node to find the most preferred node(s)
@@ -5903,7 +6195,7 @@ spec:
                                     Claims lists the names of resources, defined in spec.resourceClaims,
                                     that are used by this container.
 
-                                    This is an alpha field and requires enabling the
+                                    This field depends on the
                                     DynamicResourceAllocation feature gate.
 
                                     This field is immutable. It can only be set for containers.
@@ -5962,7 +6254,7 @@ spec:
                                     Claims lists the names of resources, defined in spec.resourceClaims,
                                     that are used by this container.
 
-                                    This is an alpha field and requires enabling the
+                                    This field depends on the
                                     DynamicResourceAllocation feature gate.
 
                                     This field is immutable. It can only be set for containers.
@@ -6023,7 +6315,7 @@ spec:
                                     Claims lists the names of resources, defined in spec.resourceClaims,
                                     that are used by this container.
 
-                                    This is an alpha field and requires enabling the
+                                    This field depends on the
                                     DynamicResourceAllocation feature gate.
 
                                     This field is immutable. It can only be set for containers.
@@ -6082,7 +6374,7 @@ spec:
                                     Claims lists the names of resources, defined in spec.resourceClaims,
                                     that are used by this container.
 
-                                    This is an alpha field and requires enabling the
+                                    This field depends on the
                                     DynamicResourceAllocation feature gate.
 
                                     This field is immutable. It can only be set for containers.
@@ -6486,6 +6778,16 @@ spec:
                   x-kubernetes-validations:
                     - message: changing the dataStoreSchema is not supported
                       rule: self == oldSelf
+                dataStoreUsername:
+                  description: |-
+                    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.
+                  type: string
+                  x-kubernetes-validations:
+                    - message: changing the dataStoreUsername is not supported
+                      rule: self == oldSelf
                 kubernetes:
                   description: Kubernetes specification for tenant control plane
                   properties:
@@ -6661,6 +6963,22 @@ spec:
                       description: 'CIDR for Kubernetes Services: if empty, defaulted to 10.96.0.0/16.'
                       type: string
                   type: object
+                writePermissions:
+                  description: |-
+                    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).
+                  properties:
+                    blockCreation:
+                      type: boolean
+                    blockDeletion:
+                      type: boolean
+                    blockUpdate:
+                      type: boolean
+                  type: object
               required:
                 - controlPlane
                 - kubernetes
@@ -6670,6 +6988,8 @@ spec:
                   rule: '!has(oldSelf.dataStore) || has(self.dataStore)'
                 - message: unsetting the dataStoreSchema is not supported
                   rule: '!has(oldSelf.dataStoreSchema) || has(self.dataStoreSchema)'
+                - message: unsetting the dataStoreUsername is not supported
+                  rule: '!has(oldSelf.dataStoreUsername) || has(self.dataStoreUsername)'
                 - message: LoadBalancer source ranges are supported only with LoadBalancer service type
                   rule: '!has(self.networkProfile.loadBalancerSourceRanges) || (size(self.networkProfile.loadBalancerSourceRanges) == 0 || self.controlPlane.service.serviceType == ''LoadBalancer'')'
                 - message: LoadBalancerClass is supported only with LoadBalancer service type
@@ -7407,6 +7727,7 @@ spec:
                           default: Provisioning
                           description: Status returns the current status of the Kubernetes version, such as its provisioning state, or completed upgrade.
                           enum:
+                            - Unknown
                             - Provisioning
                             - CertificateAuthorityRotating
                             - Upgrading
@@ -7414,6 +7735,7 @@ spec:
                             - Ready
                             - NotReady
                             - Sleeping
+                            - WriteLimited
                           type: string
                         version:
                           description: Version is the running Kubernetes version of the Tenant Control Plane.

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"
@@ -62,8 +63,6 @@ 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 +85,7 @@ 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 +96,8 @@ 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))
@@ -149,11 +150,12 @@ func NewCmd(scheme *runtime.Scheme) *cobra.Command {
 				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,
@@ -192,7 +194,10 @@ 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
@@ -214,6 +219,9 @@ func NewCmd(scheme *runtime.Scheme) *cobra.Command {
 				routes.TenantControlPlaneMigrate{}: {
 					handlers.Freeze{},
 				},
+				routes.TenantControlPlaneWritePermission{}: {
+					handlers.WritePermission{},
+				},
 				routes.TenantControlPlaneDefaults{}: {
 					handlers.TenantControlPlaneDefaults{
 						DefaultDatastore: datastore,

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_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

@@ -31,8 +31,9 @@ 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 +92,7 @@ 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 +106,35 @@ 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

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"
+
+	"github.com/pkg/errors"
+	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
+
+	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{}, errors.Wrap(nsErr, "NamespaceSelector contains an error")
+	}
+
+	var namespaceList corev1.NamespaceList
+	if err := r.Client.List(ctx, &namespaceList, &client.ListOptions{LabelSelector: nsSelector}); err != nil {
+		return kamajiv1alpha1.KubeconfigGeneratorStatus{}, errors.Wrap(err, "cannot filter Namespace objects using provided selector")
+	}
+
+	var targets []kamajiv1alpha1.TenantControlPlane
+
+	for _, ns := range namespaceList.Items {
+		tcpSelector, tcpErr := metav1.LabelSelectorAsSelector(&generator.Spec.TenantControlPlaneSelector)
+		if tcpErr != nil {
+			return kamajiv1alpha1.KubeconfigGeneratorStatus{}, errors.Wrap(tcpErr, "TenantControlPlaneSelector contains an error")
+		}
+
+		var tcpList kamajiv1alpha1.TenantControlPlaneList
+		if err := r.Client.List(ctx, &tcpList, &client.ListOptions{Namespace: ns.GetName(), LabelSelector: tcpSelector}); err != nil {
+			return kamajiv1alpha1.KubeconfigGeneratorStatus{}, errors.Wrap(err, "cannot filter TenantControlPlane objects using provided selector")
+		}
+
+		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 errors.Wrap(caErr, "cannot retrieve Certificate Authority")
+	}
+
+	caCert, crtErr := crypto.ParseCertificateBytes(caSecret.Data[kubeadmconstants.CACertName])
+	if crtErr != nil {
+		return errors.Wrap(crtErr, "cannot parse Certificate Authority certificate")
+	}
+
+	caKey, keyErr := crypto.ParsePrivateKeyBytes(caSecret.Data[kubeadmconstants.CAKeyName])
+	if keyErr != nil {
+		return errors.Wrap(keyErr, "cannot parse Certificate Authority key")
+	}
+
+	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 errors.Wrap(err, "cannot marshal private key to PEM")
+		}
+	}
+
+	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 errors.Wrap(err, "cannot encode generated Kubeconfig to YAML")
+		}
+
+		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 errors.Wrap(err, "cannot create or update generated Kubeconfig")
+	}
+
+	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

@@ -5,6 +5,7 @@ package controllers
 
 import (
 	"fmt"
+	"time"
 
 	"github.com/go-logr/logr"
 	"github.com/google/uuid"
@@ -26,6 +27,7 @@ type GroupResourceBuilderConfiguration struct {
 	log                  logr.Logger
 	tcpReconcilerConfig  TenantControlPlaneReconcilerConfig
 	tenantControlPlane   kamajiv1alpha1.TenantControlPlane
+	ExpirationThreshold  time.Duration
 	Connection           datastore.Connection
 	DataStore            kamajiv1alpha1.DataStore
 	KamajiNamespace      string
@@ -78,8 +80,8 @@ func getDefaultResources(config GroupResourceBuilderConfiguration) []resources.R
 	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, getKubernetesStorageResources(config.client, config.Connection, config.DataStore, config.ExpirationThreshold)...)
+	resources = append(resources, getKonnectivityServerRequirementsResources(config.client, config.ExpirationThreshold)...)
 	resources = append(resources, getKubernetesDeploymentResources(config.client, config.tcpReconcilerConfig, config.DataStore)...)
 	resources = append(resources, getKonnectivityServerPatchResources(config.client)...)
 	resources = append(resources, getDataStoreMigratingCleanup(config.client, config.KamajiNamespace)...)
@@ -148,28 +150,33 @@ 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 +184,37 @@ 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,
@@ -219,8 +230,9 @@ func getKubernetesStorageResources(c client.Client, dbConnection datastore.Conne
 			DataStore:  datastore,
 		},
 		&ds.Certificate{
-			Client:    c,
-			DataStore: datastore,
+			Client:                  c,
+			DataStore:               datastore,
+			CertExpirationThreshold: threshold,
 		},
 	}
 }
@@ -251,10 +263,10 @@ 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/konnectivity.go

@@ -53,6 +53,10 @@ 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())
 

controllers/soot/controllers/write_permissions.go

@@ -0,0 +1,207 @@
+// 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
+}
+
+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).
+		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

@@ -253,6 +253,19 @@ func (m *Manager) Reconcile(ctx context.Context, request reconcile.Request) (res
 	//
 	// Register all the controllers of the soot here:
 	//
+	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,
+	}
+	if err = writePermissions.SetupWithManager(mgr); err != nil {
+		return reconcile.Result{}, err
+	}
+
 	migrate := &controllers.Migrate{
 		WebhookNamespace:          m.MigrateServiceNamespace,
 		WebhookServiceName:        m.MigrateServiceName,
@@ -370,6 +383,7 @@ 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/tenantcontrolplane_controller.go

@@ -50,6 +50,7 @@ type TenantControlPlaneReconciler struct {
 	KamajiService           string
 	KamajiMigrateImage      string
 	MaxConcurrentReconciles int
+	ReconcileTimeout        time.Duration
 	// 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 +61,10 @@ 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
@@ -80,7 +81,7 @@ func (r *TenantControlPlaneReconciler) Reconcile(ctx context.Context, req ctrl.R
 	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)()

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/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

@@ -359,7 +359,7 @@ 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

@@ -160,9 +160,6 @@ 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/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/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 +63,22 @@ 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/gitops.md
   - guides/console.md
+  - guides/kubeconfig-generator.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>
 

go.mod

@@ -6,45 +6,46 @@ 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 v28.4.0+incompatible
 	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/nats-io/nats.go v1.46.1
+	github.com/onsi/ginkgo/v2 v2.26.0
+	github.com/onsi/gomega v1.38.2
 	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/prometheus/client_golang v1.23.2
+	github.com/spf13/cobra v1.10.1
+	github.com/spf13/pflag v1.0.10
+	github.com/spf13/viper v1.21.0
+	github.com/testcontainers/testcontainers-go v0.39.0
+	go.etcd.io/etcd/api/v3 v3.6.5
+	go.etcd.io/etcd/client/v3 v3.6.5
 	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 v0.34.0
+	k8s.io/apimachinery v0.34.0
+	k8s.io/apiserver v0.34.0
+	k8s.io/client-go v0.34.0
 	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 v1.34.1
+	k8s.io/utils v0.0.0-20250604170112-4c0f3b243397
+	sigs.k8s.io/controller-runtime v0.22.1
 )
 
 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
@@ -57,21 +58,21 @@ 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 v1.0.26 // 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/emicklei/go-restful/v3 v3.12.2 // indirect
 	github.com/evanphx/json-patch v4.12.0+incompatible // indirect
 	github.com/evanphx/json-patch/v5 v5.9.11 // 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
@@ -81,18 +82,17 @@ require (
 	github.com/go-openapi/swag v0.23.0 // 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 v0.0.0-20250820193118-f64d9cf942d6 // 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
@@ -112,7 +112,7 @@ 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 +120,21 @@ 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/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/client_model v0.6.2 // indirect
+	github.com/prometheus/common v0.66.1 // indirect
+	github.com/prometheus/procfs v0.16.1 // 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 +146,93 @@ 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 v3.6.5 // 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/google.golang.org/grpc/otelgrpc v0.60.0 // 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/exporters/otlp/otlptrace v1.34.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.34.0 // indirect
 	go.opentelemetry.io/otel/metric v1.35.0 // indirect
-	go.opentelemetry.io/otel/sdk v1.33.0 // indirect
+	go.opentelemetry.io/otel/sdk v1.34.0 // indirect
 	go.opentelemetry.io/otel/trace v1.35.0 // indirect
-	go.opentelemetry.io/proto/otlp v1.4.0 // 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 v2.4.2 // indirect
+	go.yaml.in/yaml/v3 v3.0.4 // indirect
+	golang.org/x/crypto v0.41.0 // 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/mod v0.27.0 // indirect
+	golang.org/x/net v0.43.0 // indirect
+	golang.org/x/oauth2 v0.30.0 // indirect
+	golang.org/x/sync v0.16.0 // indirect
+	golang.org/x/sys v0.36.0 // indirect
+	golang.org/x/term v0.34.0 // indirect
+	golang.org/x/text v0.28.0 // 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
+	golang.org/x/tools v0.36.0 // indirect
+	google.golang.org/genproto/googleapis/api v0.0.0-20250303144028-a0af3efb3deb // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20250303144028-a0af3efb3deb // indirect
+	google.golang.org/grpc v1.72.1 // indirect
+	google.golang.org/protobuf v1.36.8 // indirect
 	gopkg.in/evanphx/json-patch.v4 v4.12.0 // 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/apiextensions-apiserver v0.34.0 // 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 v0.34.0 // indirect
+	k8s.io/component-helpers v0.34.0 // indirect
+	k8s.io/controller-manager v0.34.0 // indirect
+	k8s.io/cri-api v0.34.0 // 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 v0.34.0 // indirect
+	k8s.io/kube-openapi v0.0.0-20250710124328-f3f2b991d03b // indirect
 	k8s.io/kube-proxy v0.0.0 // indirect
-	k8s.io/system-validators v1.9.1 // indirect
+	k8s.io/system-validators v1.10.1 // 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 v0.0.0-20241014173422-cfa47c3a1cc8 // 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 v0.34.0
+	k8s.io/apiextensions-apiserver => k8s.io/apiextensions-apiserver v0.34.0
+	k8s.io/apimachinery => k8s.io/apimachinery v0.34.0
+	k8s.io/apiserver => k8s.io/apiserver v0.34.0
+	k8s.io/cli-runtime => k8s.io/cli-runtime v0.34.0
+	k8s.io/client-go => k8s.io/client-go v0.34.0
+	k8s.io/cloud-provider => k8s.io/cloud-provider v0.34.0
+	k8s.io/cluster-bootstrap => k8s.io/cluster-bootstrap v0.34.0
+	k8s.io/code-generator => k8s.io/code-generator v0.34.0
+	k8s.io/component-base => k8s.io/component-base v0.34.0
+	k8s.io/component-helpers => k8s.io/component-helpers v0.34.0
+	k8s.io/controller-manager => k8s.io/controller-manager v0.34.0
+	k8s.io/cri-api => k8s.io/cri-api v0.34.0
+	k8s.io/cri-client => k8s.io/cri-client v0.34.0
+	k8s.io/csi-translation-lib => k8s.io/csi-translation-lib v0.34.0
+	k8s.io/dynamic-resource-allocation => k8s.io/dynamic-resource-allocation v0.34.0
+	k8s.io/endpointslice => k8s.io/endpointslice v0.34.0
+	k8s.io/externaljwt => k8s.io/externaljwt v0.34.0
+	k8s.io/kube-aggregator => k8s.io/kube-aggregator v0.34.0
+	k8s.io/kube-controller-manager => k8s.io/kube-controller-manager v0.34.0
+	k8s.io/kube-proxy => k8s.io/kube-proxy v0.34.0
+	k8s.io/kube-scheduler => k8s.io/kube-scheduler v0.34.0
+	k8s.io/kubectl => k8s.io/kubectl v0.34.0
+	k8s.io/kubelet => k8s.io/kubelet v0.34.0
+	k8s.io/legacy-cloud-providers => k8s.io/legacy-cloud-providers v0.34.0
+	k8s.io/metrics => k8s.io/metrics v0.34.0
+	k8s.io/mount-utils => k8s.io/mount-utils v0.34.0
+	k8s.io/pod-security-admission => k8s.io/pod-security-admission v0.34.0
+	k8s.io/sample-apiserver => k8s.io/sample-apiserver v0.34.0
 )
 
 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=
 github.com/DATA-DOG/go-sqlmock v1.5.2/go.mod h1:88MAG/4G7SMwSE3CeA0ZKzrT5CiOU3OJ+JlNzwDqpNU=
+github.com/Masterminds/semver/v3 v3.4.0 h1:Zog+i5UMtVoCU8oKka5P7i9q9HgrJeGzI9SA1Xbatp0=
+github.com/Masterminds/semver/v3 v3.4.0/go.mod h1:4V+yj/TJE1HU9XfppCwVMZq3I84lprf4nC11bSS5beM=
 github.com/Microsoft/go-winio v0.6.2 h1:F2VQgta7ecxGYO8k3ZZz3RS8fVIXVxONVUPlNERoyfY=
 github.com/Microsoft/go-winio v0.6.2/go.mod h1:yd8OoFMLzJbo9gZq8j5qaps8bJ9aShtEA8Ipt1oGCvU=
 github.com/NYTimes/gziphandler v1.1.1 h1:ZUDjpQae29j0ryrS0u/B8HZfJBtBQHjqw2rQ2cqUQ3I=
@@ -38,8 +40,8 @@ github.com/containerd/platforms v0.2.1 h1:zvwtM3rz2YHPQsF2CHYM8+KtB5dvhISiXh5ZpS
 github.com/containerd/platforms v0.2.1/go.mod h1:XHCb+2/hzowdiut9rkudds9bE5yJ7npe7dG/wG+uFPw=
 github.com/coredns/caddy v1.1.1 h1:2eYKZT7i6yxIfGP3qLJoJ7HAsDJqYB+X68g4NYjSrE0=
 github.com/coredns/caddy v1.1.1/go.mod h1:A6ntJQlAWuQfFlsd9hvigKbo2WS0VUs2l1e2F+BawD4=
-github.com/coredns/corefile-migration v1.0.25 h1:/XexFhM8FFlFLTS/zKNEWgIZ8Gl5GaWrHsMarGj/PRQ=
-github.com/coredns/corefile-migration v1.0.25/go.mod h1:56DPqONc3njpVPsdilEnfijCwNGC3/kTJLl7i7SPavY=
+github.com/coredns/corefile-migration v1.0.26 h1:xiiEkVB1Dwolb24pkeDUDBfygV9/XsOSq79yFCrhptY=
+github.com/coredns/corefile-migration v1.0.26/go.mod h1:56DPqONc3njpVPsdilEnfijCwNGC3/kTJLl7i7SPavY=
 github.com/coreos/go-semver v0.3.1 h1:yi21YpKnrx1gt5R+la8n5WgS0kCrsPp33dmEyHReZr4=
 github.com/coreos/go-semver v0.3.1/go.mod h1:irMmmIw/7yzSRPWryHsK7EYSg09caPQL03VsM8rvUec=
 github.com/coreos/go-systemd/v22 v22.5.0 h1:RrqgGjYQKalulkV8NGVIfkXQf6YYmOyiJKk8iXXhfZs=
@@ -56,18 +58,18 @@ github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc h1:U9qPSI2PIWSS1
 github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/distribution/reference v0.6.0 h1:0IXCQ5g4/QMHHkarYzh5l+u8T3t73zM5QvfrDyIgxBk=
 github.com/distribution/reference v0.6.0/go.mod h1:BbU0aIcezP1/5jX/8MP0YiH4SdvB5Y4f/wlDRiLyi3E=
-github.com/docker/docker v28.3.2+incompatible h1:wn66NJ6pWB1vBZIilP8G3qQPqHy5XymfYn5vsqeA5oA=
-github.com/docker/docker v28.3.2+incompatible/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk=
-github.com/docker/go-connections v0.5.0 h1:USnMq7hx7gwdVZq1L49hLXaFtUdTADjXGp+uj1Br63c=
-github.com/docker/go-connections v0.5.0/go.mod h1:ov60Kzw0kKElRwhNs9UlUHAE/F9Fe6GLaXnqyDdmEXc=
+github.com/docker/docker v28.4.0+incompatible h1:KVC7bz5zJY/4AZe/78BIvCnPsLaC9T/zh72xnlrTTOk=
+github.com/docker/docker v28.4.0+incompatible/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk=
+github.com/docker/go-connections v0.6.0 h1:LlMG9azAe1TqfR7sO+NJttz1gy6KO7VJBh+pMmjSD94=
+github.com/docker/go-connections v0.6.0/go.mod h1:AahvXYshr6JgfUJGdDCs2b5EZG/vmaMAntpSFH5BFKE=
 github.com/docker/go-units v0.5.0 h1:69rxXcBk27SvSaaxTtLh/8llcHD8vYHT7WSdRZ/jvr4=
 github.com/docker/go-units v0.5.0/go.mod h1:fgPhTUdO+D/Jk86RDLlptpiXQzgHJF7gydDDbaIK4Dk=
 github.com/dustin/go-humanize v1.0.1 h1:GzkhY7T5VNhEkwH0PVJgjz+fX1rhBrR7pRT3mDkpeCY=
 github.com/dustin/go-humanize v1.0.1/go.mod h1:Mu1zIs6XwVuF/gI1OepvI0qD18qycQx+mFykh5fBlto=
 github.com/ebitengine/purego v0.8.4 h1:CF7LEKg5FFOsASUj0+QwaXf8Ht6TlFxg09+S9wz0omw=
 github.com/ebitengine/purego v0.8.4/go.mod h1:iIjxzd6CiRiOG0UyXP+V1+jWqUXVjPKLAI0mRfJZTmQ=
-github.com/emicklei/go-restful/v3 v3.11.0 h1:rAQeMHw1c7zTmncogyy8VvRZwtkmkZ4FxERmMY4rD+g=
-github.com/emicklei/go-restful/v3 v3.11.0/go.mod h1:6n3XBCmQQb25CM2LCACGz8ukIrRry+4bhvbpWn3mrbc=
+github.com/emicklei/go-restful/v3 v3.12.2 h1:DhwDP0vY3k8ZzE0RunuJy8GhNpPL6zqLkDf9B/a0/xU=
+github.com/emicklei/go-restful/v3 v3.12.2/go.mod h1:6n3XBCmQQb25CM2LCACGz8ukIrRry+4bhvbpWn3mrbc=
 github.com/evanphx/json-patch v4.12.0+incompatible h1:4onqiflcdA9EOZ4RxV643DvftH5pOlLGNtQ5lPWQu84=
 github.com/evanphx/json-patch v4.12.0+incompatible/go.mod h1:50XU6AFN0ol/bzJsmQLiYLvXMP4fmwYFNcr97nuDLSk=
 github.com/evanphx/json-patch/v5 v5.9.11 h1:/8HVnzMq13/3x9TPvjG08wUGqBTmZBsCWzjTM0wiaDU=
@@ -77,10 +79,16 @@ github.com/felixge/httpsnoop v1.0.4/go.mod h1:m8KPJKqk1gH5J9DgRY2ASl2lWCfGKXixSw
 github.com/flynn/go-shlex v0.0.0-20150515145356-3f9db97f8568/go.mod h1:xEzjJPgXI435gkrCt3MPfRiAkVrwSbHsst4LCFVfpJc=
 github.com/frankban/quicktest v1.14.6 h1:7Xjx+VpznH+oBnejlPUj8oUpdxnVs4f8XU8WnHkI4W8=
 github.com/frankban/quicktest v1.14.6/go.mod h1:4ptaffx2x8+WTWXmUCuVU6aPUX1/Mz7zb5vbUoiM6w0=
-github.com/fsnotify/fsnotify v1.8.0 h1:dAwr6QBTBZIkG8roQaJjGof0pp0EeF+tNV7YBP3F/8M=
-github.com/fsnotify/fsnotify v1.8.0/go.mod h1:8jBTzvmWwFyi3Pb8djgCCO5IBqzKJ/Jwo8TRcHyHii0=
-github.com/fxamacker/cbor/v2 v2.7.0 h1:iM5WgngdRBanHcxugY4JySA0nk1wZorNOpTgCMedv5E=
-github.com/fxamacker/cbor/v2 v2.7.0/go.mod h1:pxXPTn3joSm21Gbwsv0w9OSA2y1HFR9qXEeXQVeNoDQ=
+github.com/fsnotify/fsnotify v1.9.0 h1:2Ml+OJNzbYCTzsxtv8vKSFD9PbJjmhYF14k/jKC7S9k=
+github.com/fsnotify/fsnotify v1.9.0/go.mod h1:8jBTzvmWwFyi3Pb8djgCCO5IBqzKJ/Jwo8TRcHyHii0=
+github.com/fxamacker/cbor/v2 v2.9.0 h1:NpKPmjDBgUfBms6tr6JZkTHtfFGcMKsw3eGcmD/sapM=
+github.com/fxamacker/cbor/v2 v2.9.0/go.mod h1:vM4b+DJCtHn+zz7h3FFp/hDAI9WNWCsZj23V5ytsSxQ=
+github.com/gkampitakis/ciinfo v0.3.2 h1:JcuOPk8ZU7nZQjdUhctuhQofk7BGHuIy0c9Ez8BNhXs=
+github.com/gkampitakis/ciinfo v0.3.2/go.mod h1:1NIwaOcFChN4fa/B0hEBdAb6npDlFL8Bwx4dfRLRqAo=
+github.com/gkampitakis/go-diff v1.3.2 h1:Qyn0J9XJSDTgnsgHRdz9Zp24RaJeKMUHg2+PDZZdC4M=
+github.com/gkampitakis/go-diff v1.3.2/go.mod h1:LLgOrpqleQe26cte8s36HTWcTmMEur6OPYerdAAS9tk=
+github.com/gkampitakis/go-snaps v0.5.14 h1:3fAqdB6BCPKHDMHAKRwtPUwYexKtGrNuw8HX/T/4neo=
+github.com/gkampitakis/go-snaps v0.5.14/go.mod h1:HNpx/9GoKisdhw9AFOBT1N7DBs9DiHo/hGheFGBZ+mc=
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@@ -143,22 +150,24 @@ github.com/gorilla/websocket v1.5.4-0.20250319132907-e064f32e3674 h1:JeSE6pjso5T
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@@ -206,6 +215,10 @@ github.com/magiconair/properties v1.8.10 h1:s31yESBquKXCV9a/ScB3ESkOjUYYv+X0rg8S
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 go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.58.0/go.mod h1:umTcuxiv1n/s/S6/c2AT/g2CQ7u5C59sHDNmfSwgz7Q=
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-go.opentelemetry.io/otel/sdk v1.33.0 h1:iax7M131HuAm9QkZotNHEfstof92xM+N8sr3uHXc2IM=
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-go.opentelemetry.io/proto/otlp v1.4.0 h1:TA9WRvW6zMwP+Ssb6fLoUIuirti1gGbP28GcKG1jgeg=
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@@ -393,31 +415,37 @@ go.uber.org/multierr v1.11.0 h1:blXXJkSxSSfBVBlC76pxqeO+LN3aDfLQo+309xJstO0=
 go.uber.org/multierr v1.11.0/go.mod h1:20+QtiLqy0Nd6FdQB9TLXag12DsQkrbs3htMFfDN80Y=
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@@ -430,15 +458,16 @@ golang.org/x/sys v0.0.0-20210616094352-59db8d763f22/go.mod h1:oPkhp1MJrh7nUepCBc
 golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
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-golang.org/x/sys v0.32.0 h1:s77OFDvIQeibCmezSnk/q6iAfkdiQaJi4VzroCFrN20=
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@@ -446,24 +475,22 @@ golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtn
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internal/builders/controlplane/deployment.go

@@ -136,7 +136,7 @@ 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 +344,7 @@ 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 +354,7 @@ 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 +368,7 @@ 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 +411,32 @@ 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 +446,7 @@ 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 +460,7 @@ 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 +563,7 @@ 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 +577,7 @@ 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 +591,7 @@ 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,
 			},
 		},

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

@@ -22,7 +22,7 @@ import (
 )
 
 // 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 +74,12 @@ 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)
 	}
 }
 
@@ -159,7 +159,7 @@ 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 +171,7 @@ 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
@@ -238,9 +238,9 @@ func generateCertificateKeyPairBytes(template *x509.Certificate, caCert *x509.Ce
 	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

internal/kubeadm/kubeconfig.go

@@ -8,6 +8,7 @@ import (
 	"os"
 	"path"
 	"path/filepath"
+	"time"
 
 	kubeadmconstants "k8s.io/kubernetes/cmd/kubeadm/app/constants"
 	"k8s.io/kubernetes/cmd/kubeadm/app/phases/kubeconfig"
@@ -62,13 +63,13 @@ func IsKubeconfigCAValid(in, caCrt []byte) bool {
 	return true
 }
 
-func IsKubeconfigValid(bytes []byte) bool {
+func IsKubeconfigValid(bytes []byte, expirationThreshold time.Duration) bool {
 	kc, err := utilities.DecodeKubeconfigYAML(bytes)
 	if err != nil {
 		return false
 	}
 
-	ok, _ := crypto.IsValidCertificateKeyPairBytes(kc.AuthInfos[0].AuthInfo.ClientCertificateData, kc.AuthInfos[0].AuthInfo.ClientKeyData)
+	ok, _ := crypto.IsValidCertificateKeyPairBytes(kc.AuthInfos[0].AuthInfo.ClientCertificateData, kc.AuthInfos[0].AuthInfo.ClientKeyData, expirationThreshold)
 
 	return ok
 }

internal/resources/addons/coredns.go

@@ -292,87 +292,25 @@ func (c *CoreDNS) mutateClusterRoleBinding(ctx context.Context, tenantClient cli
 }
 
 func (c *CoreDNS) mutateDeployment(ctx context.Context, tenantClient client.Client) (controllerutil.OperationResult, error) {
-	d := &appsv1.Deployment{}
-	d.SetName(c.deployment.GetName())
-	d.SetNamespace(c.deployment.GetNamespace())
+	var deployment appsv1.Deployment
+	deployment.Name = c.deployment.Name
+	deployment.Namespace = c.deployment.Namespace
 
-	return utilities.CreateOrUpdateWithConflict(ctx, tenantClient, d, func() error {
-		d.SetLabels(utilities.MergeMaps(d.GetLabels(), c.deployment.GetLabels()))
-		d.SetAnnotations(utilities.MergeMaps(d.GetAnnotations(), c.deployment.GetAnnotations()))
-		d.Spec.Replicas = c.deployment.Spec.Replicas
-		d.Spec.Selector = c.deployment.Spec.Selector
-		d.Spec.Template.Labels = c.deployment.Spec.Selector.MatchLabels
-		if len(d.Spec.Template.Spec.Volumes) != 1 {
-			d.Spec.Template.Spec.Volumes = make([]corev1.Volume, 1)
+	if err := tenantClient.Get(ctx, client.ObjectKeyFromObject(&deployment), &deployment); err != nil {
+		if k8serrors.IsNotFound(err) {
+			return utilities.CreateOrUpdateWithConflict(ctx, tenantClient, c.deployment, func() error {
+				return controllerutil.SetControllerReference(c.clusterRoleBinding, c.deployment, tenantClient.Scheme())
+			})
 		}
-		d.Spec.Template.Spec.Volumes[0].Name = c.deployment.Spec.Template.Spec.Volumes[0].Name
-		if d.Spec.Template.Spec.Volumes[0].VolumeSource.ConfigMap == nil {
-			d.Spec.Template.Spec.Volumes[0].VolumeSource.ConfigMap = &corev1.ConfigMapVolumeSource{}
-		}
-		d.Spec.Template.Spec.Volumes[0].VolumeSource.ConfigMap.LocalObjectReference.Name = c.deployment.Spec.Template.Spec.Volumes[0].VolumeSource.ConfigMap.LocalObjectReference.Name
-		if len(d.Spec.Template.Spec.Volumes[0].VolumeSource.ConfigMap.Items) == 0 {
-			d.Spec.Template.Spec.Volumes[0].VolumeSource.ConfigMap.Items = make([]corev1.KeyToPath, 1)
-		}
-		d.Spec.Template.Spec.Volumes[0].VolumeSource.ConfigMap.Items[0].Key = c.deployment.Spec.Template.Spec.Volumes[0].VolumeSource.ConfigMap.Items[0].Key
-		d.Spec.Template.Spec.Volumes[0].VolumeSource.ConfigMap.Items[0].Path = c.deployment.Spec.Template.Spec.Volumes[0].VolumeSource.ConfigMap.Items[0].Path
-		if len(d.Spec.Template.Spec.Containers) == 0 {
-			d.Spec.Template.Spec.Containers = make([]corev1.Container, 1)
-		}
-		d.Spec.Template.Spec.Containers[0].Name = c.deployment.Spec.Template.Spec.Containers[0].Name
-		d.Spec.Template.Spec.Containers[0].Image = c.deployment.Spec.Template.Spec.Containers[0].Image
-		d.Spec.Template.Spec.Containers[0].Args = c.deployment.Spec.Template.Spec.Containers[0].Args
-		if len(d.Spec.Template.Spec.Containers[0].Ports) != 3 {
-			d.Spec.Template.Spec.Containers[0].Ports = make([]corev1.ContainerPort, 3)
-		}
-		d.Spec.Template.Spec.Containers[0].Ports[0].Name = c.deployment.Spec.Template.Spec.Containers[0].Ports[0].Name
-		d.Spec.Template.Spec.Containers[0].Ports[0].ContainerPort = c.deployment.Spec.Template.Spec.Containers[0].Ports[0].ContainerPort
-		d.Spec.Template.Spec.Containers[0].Ports[0].Protocol = c.deployment.Spec.Template.Spec.Containers[0].Ports[0].Protocol
-		d.Spec.Template.Spec.Containers[0].Ports[1].Name = c.deployment.Spec.Template.Spec.Containers[0].Ports[1].Name
-		d.Spec.Template.Spec.Containers[0].Ports[1].ContainerPort = c.deployment.Spec.Template.Spec.Containers[0].Ports[1].ContainerPort
-		d.Spec.Template.Spec.Containers[0].Ports[1].Protocol = c.deployment.Spec.Template.Spec.Containers[0].Ports[1].Protocol
-		d.Spec.Template.Spec.Containers[0].Ports[2].Name = c.deployment.Spec.Template.Spec.Containers[0].Ports[2].Name
-		d.Spec.Template.Spec.Containers[0].Ports[2].ContainerPort = c.deployment.Spec.Template.Spec.Containers[0].Ports[2].ContainerPort
-		d.Spec.Template.Spec.Containers[0].Ports[2].Protocol = c.deployment.Spec.Template.Spec.Containers[0].Ports[2].Protocol
-		d.Spec.Template.Spec.Containers[0].Resources = c.deployment.Spec.Template.Spec.Containers[0].Resources
-		if len(d.Spec.Template.Spec.Containers[0].VolumeMounts) == 0 {
-			d.Spec.Template.Spec.Containers[0].VolumeMounts = make([]corev1.VolumeMount, 1)
-		}
-		d.Spec.Template.Spec.Containers[0].VolumeMounts[0].Name = c.deployment.Spec.Template.Spec.Containers[0].VolumeMounts[0].Name
-		d.Spec.Template.Spec.Containers[0].VolumeMounts[0].ReadOnly = c.deployment.Spec.Template.Spec.Containers[0].VolumeMounts[0].ReadOnly
-		d.Spec.Template.Spec.Containers[0].VolumeMounts[0].MountPath = c.deployment.Spec.Template.Spec.Containers[0].VolumeMounts[0].MountPath
-		if d.Spec.Template.Spec.Containers[0].LivenessProbe == nil {
-			d.Spec.Template.Spec.Containers[0].LivenessProbe = &corev1.Probe{}
-		}
-		d.Spec.Template.Spec.Containers[0].LivenessProbe.HTTPGet = c.deployment.Spec.Template.Spec.Containers[0].LivenessProbe.HTTPGet
-		d.Spec.Template.Spec.Containers[0].LivenessProbe.InitialDelaySeconds = c.deployment.Spec.Template.Spec.Containers[0].LivenessProbe.InitialDelaySeconds
-		d.Spec.Template.Spec.Containers[0].LivenessProbe.TimeoutSeconds = c.deployment.Spec.Template.Spec.Containers[0].LivenessProbe.TimeoutSeconds
-		d.Spec.Template.Spec.Containers[0].LivenessProbe.SuccessThreshold = c.deployment.Spec.Template.Spec.Containers[0].LivenessProbe.SuccessThreshold
-		d.Spec.Template.Spec.Containers[0].LivenessProbe.FailureThreshold = c.deployment.Spec.Template.Spec.Containers[0].LivenessProbe.FailureThreshold
-		if d.Spec.Template.Spec.Containers[0].ReadinessProbe == nil {
-			d.Spec.Template.Spec.Containers[0].ReadinessProbe = &corev1.Probe{}
-		}
-		d.Spec.Template.Spec.Containers[0].ReadinessProbe.HTTPGet = c.deployment.Spec.Template.Spec.Containers[0].ReadinessProbe.HTTPGet
-		if d.Spec.Template.Spec.Containers[0].SecurityContext == nil {
-			d.Spec.Template.Spec.Containers[0].SecurityContext = &corev1.SecurityContext{}
-		}
-		d.Spec.Template.Spec.Containers[0].SecurityContext.Capabilities = c.deployment.Spec.Template.Spec.Containers[0].SecurityContext.Capabilities
-		d.Spec.Template.Spec.Containers[0].SecurityContext.ReadOnlyRootFilesystem = c.deployment.Spec.Template.Spec.Containers[0].SecurityContext.ReadOnlyRootFilesystem
-		d.Spec.Template.Spec.Containers[0].SecurityContext.AllowPrivilegeEscalation = c.deployment.Spec.Template.Spec.Containers[0].SecurityContext.AllowPrivilegeEscalation
-		d.Spec.Template.Spec.DNSPolicy = c.deployment.Spec.Template.Spec.DNSPolicy
-		d.Spec.Template.Spec.NodeSelector = c.deployment.Spec.Template.Spec.NodeSelector
-		d.Spec.Template.Spec.ServiceAccountName = c.deployment.Spec.Template.Spec.ServiceAccountName
-		if d.Spec.Template.Spec.Affinity == nil {
-			d.Spec.Template.Spec.Affinity = &corev1.Affinity{
-				PodAntiAffinity: &corev1.PodAntiAffinity{},
-			}
-		}
-		d.Spec.Template.Spec.Affinity.PodAffinity = c.deployment.Spec.Template.Spec.Affinity.PodAffinity
-		d.Spec.Template.Spec.Tolerations = c.deployment.Spec.Template.Spec.Tolerations
-		d.Spec.Template.Spec.PriorityClassName = c.deployment.Spec.Template.Spec.PriorityClassName
-		d.Spec.Strategy.Type = c.deployment.Spec.Strategy.Type
 
-		return controllerutil.SetControllerReference(c.clusterRoleBinding, d, tenantClient.Scheme())
-	})
+		return controllerutil.OperationResultNone, err
+	}
+
+	if err := controllerutil.SetControllerReference(c.clusterRoleBinding, c.deployment, tenantClient.Scheme()); err != nil {
+		return controllerutil.OperationResultNone, err
+	}
+
+	return controllerutil.OperationResultNone, tenantClient.Patch(ctx, c.deployment, client.Apply, client.FieldOwner("kamaji"), client.ForceOwnership)
 }
 
 func (c *CoreDNS) mutateConfigMap(ctx context.Context, tenantClient client.Client) (controllerutil.OperationResult, error) {
@@ -390,20 +328,25 @@ func (c *CoreDNS) mutateConfigMap(ctx context.Context, tenantClient client.Clien
 }
 
 func (c *CoreDNS) mutateService(ctx context.Context, tenantClient client.Client) (controllerutil.OperationResult, error) {
-	svc := &corev1.Service{}
-	svc.SetName(c.service.GetName())
-	svc.SetNamespace(c.service.GetNamespace())
+	var svc corev1.Service
+	svc.Name = c.service.Name
+	svc.Namespace = c.service.Namespace
 
-	return utilities.CreateOrUpdateWithConflict(ctx, tenantClient, svc, func() error {
-		svc.SetLabels(utilities.MergeMaps(svc.GetLabels(), c.service.GetLabels()))
-		svc.SetAnnotations(utilities.MergeMaps(svc.GetAnnotations(), c.service.GetAnnotations()))
+	if err := tenantClient.Get(ctx, client.ObjectKeyFromObject(&svc), &svc); err != nil {
+		if k8serrors.IsNotFound(err) {
+			return utilities.CreateOrUpdateWithConflict(ctx, tenantClient, c.service, func() error {
+				return controllerutil.SetControllerReference(c.clusterRoleBinding, c.service, tenantClient.Scheme())
+			})
+		}
 
-		svc.Spec.Ports = c.service.Spec.Ports
-		svc.Spec.Selector = c.service.Spec.Selector
-		svc.Spec.ClusterIP = c.service.Spec.ClusterIP
+		return controllerutil.OperationResultNone, err
+	}
 
-		return controllerutil.SetControllerReference(c.clusterRoleBinding, svc, tenantClient.Scheme())
-	})
+	if err := controllerutil.SetControllerReference(c.clusterRoleBinding, c.service, tenantClient.Scheme()); err != nil {
+		return controllerutil.OperationResultNone, err
+	}
+
+	return controllerutil.OperationResultNone, tenantClient.Patch(ctx, c.service, client.Apply, client.FieldOwner("kamaji"), client.ForceOwnership)
 }
 
 func (c *CoreDNS) mutateClusterRole(ctx context.Context, tenantClient client.Client) (controllerutil.OperationResult, error) {

internal/resources/addons/kube_proxy.go

@@ -15,7 +15,6 @@ import (
 	k8serrors "k8s.io/apimachinery/pkg/api/errors"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/types"
-	pointer "k8s.io/utils/ptr"
 	"sigs.k8s.io/controller-runtime/pkg/client"
 	"sigs.k8s.io/controller-runtime/pkg/controller/controllerutil"
 	"sigs.k8s.io/controller-runtime/pkg/log"
@@ -298,81 +297,25 @@ func (k *KubeProxy) mutateConfigMap(ctx context.Context, tenantClient client.Cli
 }
 
 func (k *KubeProxy) mutateDaemonSet(ctx context.Context, tenantClient client.Client) (controllerutil.OperationResult, error) {
-	ds := &appsv1.DaemonSet{}
-	ds.SetName(k.daemonSet.GetName())
-	ds.SetNamespace(k.daemonSet.GetNamespace())
+	var ds appsv1.DaemonSet
+	ds.Name = k.daemonSet.Name
+	ds.Namespace = k.daemonSet.Namespace
 
-	return utilities.CreateOrUpdateWithConflict(ctx, tenantClient, ds, func() error {
-		ds.SetLabels(utilities.MergeMaps(ds.GetLabels(), k.daemonSet.GetLabels()))
-		ds.SetAnnotations(utilities.MergeMaps(ds.GetAnnotations(), k.daemonSet.GetAnnotations()))
-		ds.Spec.Selector = k.daemonSet.Spec.Selector
-		if len(ds.Spec.Template.Spec.Volumes) != 3 {
-			ds.Spec.Template.Spec.Volumes = make([]corev1.Volume, 3)
-		}
-		ds.Spec.Template.ObjectMeta.SetLabels(k.daemonSet.Spec.Template.GetLabels())
-		ds.Spec.Template.Spec.Volumes[0].Name = k.daemonSet.Spec.Template.Spec.Volumes[0].Name
-		ds.Spec.Template.Spec.Volumes[0].VolumeSource.ConfigMap = &corev1.ConfigMapVolumeSource{
-			LocalObjectReference: corev1.LocalObjectReference{Name: k.daemonSet.Spec.Template.Spec.Volumes[0].VolumeSource.ConfigMap.Name},
-			DefaultMode:          pointer.To(int32(420)),
+	if err := tenantClient.Get(ctx, client.ObjectKeyFromObject(&ds), &ds); err != nil {
+		if k8serrors.IsNotFound(err) {
+			return utilities.CreateOrUpdateWithConflict(ctx, tenantClient, k.daemonSet, func() error {
+				return controllerutil.SetControllerReference(k.clusterRoleBinding, k.daemonSet, tenantClient.Scheme())
+			})
 		}
 
-		ds.Spec.Template.Spec.Volumes[1].Name = k.daemonSet.Spec.Template.Spec.Volumes[1].Name
-		ds.Spec.Template.Spec.Volumes[1].VolumeSource.HostPath = &corev1.HostPathVolumeSource{
-			Path: k.daemonSet.Spec.Template.Spec.Volumes[1].VolumeSource.HostPath.Path,
-			Type: func(v corev1.HostPathType) *corev1.HostPathType {
-				return &v
-			}(corev1.HostPathFileOrCreate),
-		}
+		return controllerutil.OperationResultNone, err
+	}
 
-		ds.Spec.Template.Spec.Volumes[2].Name = k.daemonSet.Spec.Template.Spec.Volumes[2].Name
-		ds.Spec.Template.Spec.Volumes[2].VolumeSource.HostPath = &corev1.HostPathVolumeSource{
-			Path: k.daemonSet.Spec.Template.Spec.Volumes[2].VolumeSource.HostPath.Path,
-			Type: func(v corev1.HostPathType) *corev1.HostPathType {
-				return &v
-			}(""),
-		}
+	if err := controllerutil.SetControllerReference(k.clusterRoleBinding, k.daemonSet, tenantClient.Scheme()); err != nil {
+		return controllerutil.OperationResultNone, err
+	}
 
-		if len(ds.Spec.Template.Spec.Containers) == 0 {
-			ds.Spec.Template.Spec.Containers = make([]corev1.Container, 1)
-		}
-		ds.Spec.Template.Spec.Containers[0].Name = k.daemonSet.Spec.Template.Spec.Containers[0].Name
-		ds.Spec.Template.Spec.Containers[0].Image = k.daemonSet.Spec.Template.Spec.Containers[0].Image
-		ds.Spec.Template.Spec.Containers[0].Command = k.daemonSet.Spec.Template.Spec.Containers[0].Command
-		if len(ds.Spec.Template.Spec.Containers[0].Env) == 0 {
-			ds.Spec.Template.Spec.Containers[0].Env = make([]corev1.EnvVar, 1)
-		}
-		ds.Spec.Template.Spec.Containers[0].Env[0].Name = k.daemonSet.Spec.Template.Spec.Containers[0].Env[0].Name
-		if ds.Spec.Template.Spec.Containers[0].Env[0].ValueFrom == nil {
-			ds.Spec.Template.Spec.Containers[0].Env[0].ValueFrom = &corev1.EnvVarSource{
-				FieldRef: &corev1.ObjectFieldSelector{},
-			}
-		}
-		ds.Spec.Template.Spec.Containers[0].Env[0].ValueFrom.FieldRef.FieldPath = k.daemonSet.Spec.Template.Spec.Containers[0].Env[0].ValueFrom.FieldRef.FieldPath
-		if len(ds.Spec.Template.Spec.Containers[0].VolumeMounts) != 3 {
-			ds.Spec.Template.Spec.Containers[0].VolumeMounts = make([]corev1.VolumeMount, 3)
-		}
-		ds.Spec.Template.Spec.Containers[0].VolumeMounts[0].Name = k.daemonSet.Spec.Template.Spec.Containers[0].VolumeMounts[0].Name
-		ds.Spec.Template.Spec.Containers[0].VolumeMounts[0].ReadOnly = k.daemonSet.Spec.Template.Spec.Containers[0].VolumeMounts[0].ReadOnly
-		ds.Spec.Template.Spec.Containers[0].VolumeMounts[0].MountPath = k.daemonSet.Spec.Template.Spec.Containers[0].VolumeMounts[0].MountPath
-		ds.Spec.Template.Spec.Containers[0].VolumeMounts[1].Name = k.daemonSet.Spec.Template.Spec.Containers[0].VolumeMounts[1].Name
-		ds.Spec.Template.Spec.Containers[0].VolumeMounts[1].ReadOnly = k.daemonSet.Spec.Template.Spec.Containers[0].VolumeMounts[1].ReadOnly
-		ds.Spec.Template.Spec.Containers[0].VolumeMounts[1].MountPath = k.daemonSet.Spec.Template.Spec.Containers[0].VolumeMounts[1].MountPath
-		ds.Spec.Template.Spec.Containers[0].VolumeMounts[2].Name = k.daemonSet.Spec.Template.Spec.Containers[0].VolumeMounts[2].Name
-		ds.Spec.Template.Spec.Containers[0].VolumeMounts[2].ReadOnly = k.daemonSet.Spec.Template.Spec.Containers[0].VolumeMounts[2].ReadOnly
-		ds.Spec.Template.Spec.Containers[0].VolumeMounts[2].MountPath = k.daemonSet.Spec.Template.Spec.Containers[0].VolumeMounts[2].MountPath
-		if ds.Spec.Template.Spec.Containers[0].SecurityContext == nil {
-			ds.Spec.Template.Spec.Containers[0].SecurityContext = &corev1.SecurityContext{}
-		}
-		ds.Spec.Template.Spec.Containers[0].SecurityContext.Privileged = k.daemonSet.Spec.Template.Spec.Containers[0].SecurityContext.Privileged
-		ds.Spec.Template.Spec.NodeSelector = k.daemonSet.Spec.Template.Spec.NodeSelector
-		ds.Spec.Template.Spec.ServiceAccountName = k.daemonSet.Spec.Template.Spec.ServiceAccountName
-		ds.Spec.Template.Spec.HostNetwork = k.daemonSet.Spec.Template.Spec.HostNetwork
-		ds.Spec.Template.Spec.Tolerations = k.daemonSet.Spec.Template.Spec.Tolerations
-		ds.Spec.Template.Spec.PriorityClassName = k.daemonSet.Spec.Template.Spec.PriorityClassName
-		ds.Spec.UpdateStrategy.Type = k.daemonSet.Spec.UpdateStrategy.Type
-
-		return controllerutil.SetControllerReference(k.clusterRoleBinding, ds, tenantClient.Scheme())
-	})
+	return controllerutil.OperationResultNone, tenantClient.Patch(ctx, k.daemonSet, client.Apply, client.FieldOwner("kamaji"), client.ForceOwnership)
 }
 
 func (k *KubeProxy) decodeManifests(ctx context.Context, tcp *kamajiv1alpha1.TenantControlPlane) error {

internal/resources/api_server_certificate.go

@@ -7,6 +7,7 @@ import (
 	"context"
 	"crypto/x509"
 	"fmt"
+	"time"
 
 	"github.com/prometheus/client_golang/prometheus"
 	corev1 "k8s.io/api/core/v1"
@@ -27,9 +28,10 @@ import (
 )
 
 type APIServerCertificate struct {
-	resource     *corev1.Secret
-	Client       client.Client
-	TmpDirectory string
+	resource                *corev1.Secret
+	Client                  client.Client
+	TmpDirectory            string
+	CertExpirationThreshold time.Duration
 }
 
 func (r *APIServerCertificate) GetHistogram() prometheus.Histogram {
@@ -138,6 +140,7 @@ func (r *APIServerCertificate) mutate(ctx context.Context, tenantControlPlane *k
 			isCertValid, err := crypto.CheckCertificateAndPrivateKeyPairValidity(
 				r.resource.Data[kubeadmconstants.APIServerCertName],
 				r.resource.Data[kubeadmconstants.APIServerKeyName],
+				r.CertExpirationThreshold,
 			)
 			if err != nil {
 				logger.Info(fmt.Sprintf("%s certificate-private_key pair is not valid: %s", kubeadmconstants.APIServerCertAndKeyBaseName, err.Error()))

internal/resources/api_server_kubelet_client_certificate.go

@@ -7,6 +7,7 @@ import (
 	"context"
 	"crypto/x509"
 	"fmt"
+	"time"
 
 	"github.com/prometheus/client_golang/prometheus"
 	corev1 "k8s.io/api/core/v1"
@@ -26,9 +27,10 @@ import (
 )
 
 type APIServerKubeletClientCertificate struct {
-	resource     *corev1.Secret
-	Client       client.Client
-	TmpDirectory string
+	resource                *corev1.Secret
+	Client                  client.Client
+	TmpDirectory            string
+	CertExpirationThreshold time.Duration
 }
 
 func (r *APIServerKubeletClientCertificate) GetHistogram() prometheus.Histogram {
@@ -125,6 +127,7 @@ func (r *APIServerKubeletClientCertificate) mutate(ctx context.Context, tenantCo
 			isValid, err := crypto.CheckCertificateAndPrivateKeyPairValidity(
 				r.resource.Data[kubeadmconstants.APIServerKubeletClientCertName],
 				r.resource.Data[kubeadmconstants.APIServerKubeletClientKeyName],
+				r.CertExpirationThreshold,
 			)
 			if err != nil {
 				logger.Info(fmt.Sprintf("%s certificate-private_key pair is not valid: %s", kubeadmconstants.APIServerKubeletClientCertAndKeyBaseName, err.Error()))

internal/resources/ca_certificate.go

@@ -7,6 +7,7 @@ import (
 	"bytes"
 	"context"
 	"fmt"
+	"time"
 
 	"github.com/prometheus/client_golang/prometheus"
 	corev1 "k8s.io/api/core/v1"
@@ -27,8 +28,9 @@ type CACertificate struct {
 	resource     *corev1.Secret
 	isRotatingCA bool
 
-	Client       client.Client
-	TmpDirectory string
+	Client                  client.Client
+	TmpDirectory            string
+	CertExpirationThreshold time.Duration
 }
 
 func (r *CACertificate) GetHistogram() prometheus.Histogram {
@@ -102,6 +104,7 @@ func (r *CACertificate) mutate(ctx context.Context, tenantControlPlane *kamajiv1
 			isValid, err := crypto.CheckCertificateAndPrivateKeyPairValidity(
 				r.resource.Data[kubeadmconstants.CACertName],
 				r.resource.Data[kubeadmconstants.CAKeyName],
+				r.CertExpirationThreshold,
 			)
 			if err != nil {
 				logger.Info(fmt.Sprintf("%s certificate-private_key pair is not valid: %s", kubeadmconstants.CACertAndKeyBaseName, err.Error()))

internal/resources/datastore/datastore_certificate.go

@@ -7,6 +7,7 @@ import (
 	"bytes"
 	"context"
 	"fmt"
+	"time"
 
 	"github.com/prometheus/client_golang/prometheus"
 	corev1 "k8s.io/api/core/v1"
@@ -24,10 +25,11 @@ import (
 )
 
 type Certificate struct {
-	resource  *corev1.Secret
-	Client    client.Client
-	Name      string
-	DataStore kamajiv1alpha1.DataStore
+	resource                *corev1.Secret
+	Client                  client.Client
+	Name                    string
+	DataStore               kamajiv1alpha1.DataStore
+	CertExpirationThreshold time.Duration
 }
 
 func (r *Certificate) GetHistogram() prometheus.Histogram {
@@ -118,7 +120,7 @@ func (r *Certificate) mutate(ctx context.Context, tenantControlPlane *kamajiv1al
 
 			if utilities.GetObjectChecksum(r.resource) == utilities.CalculateMapChecksum(r.resource.Data) {
 				if r.DataStore.Spec.Driver == kamajiv1alpha1.EtcdDriver {
-					if isValid, _ := crypto.IsValidCertificateKeyPairBytes(r.resource.Data["server.crt"], r.resource.Data["server.key"]); isValid && !isRotationRequested {
+					if isValid, _ := crypto.IsValidCertificateKeyPairBytes(r.resource.Data["server.crt"], r.resource.Data["server.key"], r.CertExpirationThreshold); isValid && !isRotationRequested {
 						return nil
 					}
 				}

internal/resources/datastore/datastore_storage_config.go

@@ -5,8 +5,6 @@ package datastore
 
 import (
 	"context"
-	"fmt"
-	"strings"
 
 	"github.com/google/uuid"
 	"github.com/pkg/errors"
@@ -125,19 +123,6 @@ func (r *Config) mutate(ctx context.Context, tenantControlPlane *kamajiv1alpha1.
 		default:
 			password = []byte(uuid.New().String())
 		}
-		// the coalesce function prioritizes the return value stored in the TenantControlPlane status,
-		// although this is going to be populated by the UpdateTenantControlPlaneStatus handler of the resource datastore-setup:
-		// the default value will be used for fresh new configurations, and preserving a previous one:
-		// this will keep us safe from naming changes cases as occurred with the following commit:
-		// https://github.com/clastix/kamaji/pull/203/commits/09ce38f489cccca72ab728a259bc8fb2cf6e4770
-		coalesceFn := func(fromStatus string) []byte {
-			if len(fromStatus) > 0 {
-				return []byte(fromStatus)
-			}
-			// The dash character (-) must be replaced with an underscore, PostgreSQL is complaining about it:
-			// https://github.com/clastix/kamaji/issues/328
-			return []byte(strings.ReplaceAll(fmt.Sprintf("%s_%s", tenantControlPlane.GetNamespace(), tenantControlPlane.GetName()), "-", "_"))
-		}
 
 		finalizersList := sets.New[string](r.resource.GetFinalizers()...)
 		finalizersList.Insert(finalizers.DatastoreSecretFinalizer)
@@ -161,7 +146,24 @@ func (r *Config) mutate(ctx context.Context, tenantControlPlane *kamajiv1alpha1.
 			username = u
 			password = p
 		} else {
-			username = coalesceFn(tenantControlPlane.Status.Storage.Setup.User)
+			// prioritize the username stored in the TenantControlPlane status,
+			// although this is going to be populated by the UpdateTenantControlPlaneStatus handler of the resource datastore-setup:
+			// the default value will be used for fresh new configurations, and preserving a previous one:
+			// this will keep us safe from naming changes cases as occurred with the following commit:
+			// https://github.com/clastix/kamaji/pull/203/commits/09ce38f489cccca72ab728a259bc8fb2cf6e4770
+			switch {
+			case len(tenantControlPlane.Status.Storage.Setup.User) > 0:
+				// for existing TCPs, the dataStoreSchema will be adopted from the status,
+				// as the mutating webhook only takes care of TCP creations, not updates
+				username = []byte(tenantControlPlane.Status.Storage.Setup.User)
+				tenantControlPlane.Spec.DataStoreUsername = string(username)
+			case len(tenantControlPlane.Spec.DataStoreUsername) > 0:
+				// for new TCPs, the spec field will have been provided by the user
+				// or defaulted by the defaulting webhook
+				username = []byte(tenantControlPlane.Spec.DataStoreUsername)
+			default:
+				username = []byte(tenantControlPlane.GetDefaultDatastoreUsername())
+			}
 		}
 
 		var dataStoreSchema string
@@ -176,8 +178,7 @@ func (r *Config) mutate(ctx context.Context, tenantControlPlane *kamajiv1alpha1.
 			// or defaulted by the defaulting webhook
 			dataStoreSchema = tenantControlPlane.Spec.DataStoreSchema
 		default:
-			// this can only happen on TCP creations when the webhook is not installed
-			return fmt.Errorf("cannot build datastore storage config, schema name must either exist in Spec or Status")
+			dataStoreSchema = tenantControlPlane.GetDefaultDatastoreSchema()
 		}
 
 		r.resource.Data = map[string][]byte{

internal/resources/datastore/datastore_storage_config_test.go

@@ -5,6 +5,7 @@ package datastore_test
 
 import (
 	"context"
+	"fmt"
 
 	. "github.com/onsi/ginkgo/v2"
 	. "github.com/onsi/gomega"
@@ -60,16 +61,27 @@ var _ = Describe("DatastoreStorageConfig", func() {
 		}
 	})
 
-	When("TCP has no dataStoreSchema defined", func() {
+	When("TCP has neither dataStoreSchema nor dataStoreUsername defined, fallback to default value", func() {
 		It("should return an error", func() {
-			_, err := resources.Handle(ctx, dsc, tcp)
-			Expect(err).To(HaveOccurred())
+			op, err := resources.Handle(ctx, dsc, tcp)
+			Expect(err).ToNot(HaveOccurred())
+			Expect(op).To(Equal(controllerutil.OperationResultCreated))
+
+			var secrets corev1.SecretList
+			Expect(fakeClient.List(ctx, &secrets)).To(Succeed())
+			Expect(secrets.Items).To(HaveLen(1))
+
+			expectedValue := []byte(fmt.Sprintf("%s_%s", tcp.Namespace, tcp.Name))
+
+			Expect(secrets.Items[0].Data["DB_SCHEMA"]).To(Equal(expectedValue))
+			Expect(secrets.Items[0].Data["DB_USER"]).To(Equal(expectedValue))
 		})
 	})
 
-	When("TCP has dataStoreSchema set in spec", func() {
+	When("TCP has dataStoreSchema and dataStoreUsername set in spec", func() {
 		BeforeEach(func() {
 			tcp.Spec.DataStoreSchema = "custom-prefix"
+			tcp.Spec.DataStoreUsername = "custom-user"
 		})
 
 		It("should create the datastore secret with the schema name from the spec", func() {
@@ -81,10 +93,11 @@ var _ = Describe("DatastoreStorageConfig", func() {
 			Expect(fakeClient.List(ctx, secrets)).To(Succeed())
 			Expect(secrets.Items).To(HaveLen(1))
 			Expect(secrets.Items[0].Data["DB_SCHEMA"]).To(Equal([]byte("custom-prefix")))
+			Expect(secrets.Items[0].Data["DB_USER"]).To(Equal([]byte("custom-user")))
 		})
 	})
 
-	When("TCP has dataStoreSchema set in status, but not in spec", func() {
+	When("TCP has dataStoreSchema and dataStoreUsername set in status, but not in spec", func() {
 		// this test case ensures that existing TCPs (created in a CRD version without
 		// the dataStoreSchema field) correctly adopt the spec field from the status.
 
@@ -92,6 +105,7 @@ var _ = Describe("DatastoreStorageConfig", func() {
 			By("updating the TCP status")
 			Expect(fakeClient.Get(ctx, client.ObjectKeyFromObject(tcp), tcp)).To(Succeed())
 			tcp.Status.Storage.Setup.Schema = "existing-schema-name"
+			tcp.Status.Storage.Setup.User = "existing-username"
 			Expect(fakeClient.Status().Update(ctx, tcp)).To(Succeed())
 
 			By("handling the resource")
@@ -104,12 +118,14 @@ var _ = Describe("DatastoreStorageConfig", func() {
 			Expect(fakeClient.List(ctx, secrets)).To(Succeed())
 			Expect(secrets.Items).To(HaveLen(1))
 			Expect(secrets.Items[0].Data["DB_SCHEMA"]).To(Equal([]byte("existing-schema-name")))
+			Expect(secrets.Items[0].Data["DB_USER"]).To(Equal([]byte("existing-username")))
 
 			By("checking the TCP spec")
 			// we have to check the modified struct here (instead of retrieving the object
 			// via the fakeClient), as the TCP resource update is not done by the resources.
 			// Instead, the TCP controller will handle TCP updates after handling all resources
 			tcp.Spec.DataStoreSchema = "existing-schema-name"
+			tcp.Spec.DataStoreUsername = "existing-username"
 		})
 	})
 })

internal/resources/front-proxy-client-certificate.go

@@ -7,6 +7,7 @@ import (
 	"context"
 	"crypto/x509"
 	"fmt"
+	"time"
 
 	"github.com/prometheus/client_golang/prometheus"
 	corev1 "k8s.io/api/core/v1"
@@ -26,9 +27,10 @@ import (
 )
 
 type FrontProxyClientCertificate struct {
-	resource     *corev1.Secret
-	Client       client.Client
-	TmpDirectory string
+	resource                *corev1.Secret
+	Client                  client.Client
+	TmpDirectory            string
+	CertExpirationThreshold time.Duration
 }
 
 func (r *FrontProxyClientCertificate) GetHistogram() prometheus.Histogram {
@@ -125,6 +127,7 @@ func (r *FrontProxyClientCertificate) mutate(ctx context.Context, tenantControlP
 			isValid, err := crypto.CheckCertificateAndPrivateKeyPairValidity(
 				r.resource.Data[kubeadmconstants.FrontProxyClientCertName],
 				r.resource.Data[kubeadmconstants.FrontProxyClientKeyName],
+				r.CertExpirationThreshold,
 			)
 			if err != nil {
 				logger.Info(fmt.Sprintf("%s certificate-private_key pair is not valid: %s", kubeadmconstants.FrontProxyClientCertAndKeyBaseName, err.Error()))

internal/resources/front_proxy_ca_certificate.go

@@ -6,6 +6,7 @@ package resources
 import (
 	"context"
 	"fmt"
+	"time"
 
 	"github.com/prometheus/client_golang/prometheus"
 	corev1 "k8s.io/api/core/v1"
@@ -23,9 +24,10 @@ import (
 )
 
 type FrontProxyCACertificate struct {
-	resource     *corev1.Secret
-	Client       client.Client
-	TmpDirectory string
+	resource                *corev1.Secret
+	Client                  client.Client
+	TmpDirectory            string
+	CertExpirationThreshold time.Duration
 }
 
 func (r *FrontProxyCACertificate) GetHistogram() prometheus.Histogram {
@@ -95,6 +97,7 @@ func (r *FrontProxyCACertificate) mutate(ctx context.Context, tenantControlPlane
 			isValid, err := crypto.CheckCertificateAndPrivateKeyPairValidity(
 				r.resource.Data[kubeadmconstants.FrontProxyCACertName],
 				r.resource.Data[kubeadmconstants.FrontProxyCAKeyName],
+				r.CertExpirationThreshold,
 			)
 			if err != nil {
 				logger.Info(fmt.Sprintf("%s certificate-private_key pair is not valid: %s", kubeadmconstants.FrontProxyCACertAndKeyBaseName, err.Error()))

internal/resources/k8s_deployment_resource.go

@@ -36,7 +36,9 @@ func (r *KubernetesDeploymentResource) isStatusEqual(tenantControlPlane *kamajiv
 }
 
 func (r *KubernetesDeploymentResource) ShouldStatusBeUpdated(_ context.Context, tenantControlPlane *kamajiv1alpha1.TenantControlPlane) bool {
-	return !r.isStatusEqual(tenantControlPlane) || tenantControlPlane.Spec.Kubernetes.Version != tenantControlPlane.Status.Kubernetes.Version.Version
+	return !r.isStatusEqual(tenantControlPlane) ||
+		tenantControlPlane.Spec.Kubernetes.Version != tenantControlPlane.Status.Kubernetes.Version.Version ||
+		*r.computeStatus(tenantControlPlane) != ptr.Deref(tenantControlPlane.Status.Kubernetes.Version.Status, kamajiv1alpha1.VersionUnknown)
 }
 
 func (r *KubernetesDeploymentResource) ShouldCleanup(*kamajiv1alpha1.TenantControlPlane) bool {
@@ -78,19 +80,29 @@ func (r *KubernetesDeploymentResource) GetName() string {
 	return "deployment"
 }
 
-func (r *KubernetesDeploymentResource) UpdateTenantControlPlaneStatus(_ context.Context, tenantControlPlane *kamajiv1alpha1.TenantControlPlane) error {
+func (r *KubernetesDeploymentResource) computeStatus(tenantControlPlane *kamajiv1alpha1.TenantControlPlane) *kamajiv1alpha1.KubernetesVersionStatus {
 	switch {
 	case ptr.Deref(tenantControlPlane.Spec.ControlPlane.Deployment.Replicas, 2) == 0:
-		tenantControlPlane.Status.Kubernetes.Version.Status = &kamajiv1alpha1.VersionSleeping
-	case !r.isProgressingUpgrade():
-		tenantControlPlane.Status.Kubernetes.Version.Status = &kamajiv1alpha1.VersionReady
-		tenantControlPlane.Status.Kubernetes.Version.Version = tenantControlPlane.Spec.Kubernetes.Version
-	case r.isUpgrading(tenantControlPlane):
-		tenantControlPlane.Status.Kubernetes.Version.Status = &kamajiv1alpha1.VersionUpgrading
-	case r.isProvisioning(tenantControlPlane):
-		tenantControlPlane.Status.Kubernetes.Version.Status = &kamajiv1alpha1.VersionProvisioning
+		return &kamajiv1alpha1.VersionSleeping
 	case r.isNotReady():
-		tenantControlPlane.Status.Kubernetes.Version.Status = &kamajiv1alpha1.VersionNotReady
+		return &kamajiv1alpha1.VersionNotReady
+	case tenantControlPlane.Spec.WritePermissions.HasAnyLimitation():
+		return &kamajiv1alpha1.VersionWriteLimited
+	case !r.isProgressingUpgrade():
+		return &kamajiv1alpha1.VersionReady
+	case r.isUpgrading(tenantControlPlane):
+		return &kamajiv1alpha1.VersionUpgrading
+	case r.isProvisioning(tenantControlPlane):
+		return &kamajiv1alpha1.VersionProvisioning
+	default:
+		return &kamajiv1alpha1.VersionUnknown
+	}
+}
+
+func (r *KubernetesDeploymentResource) UpdateTenantControlPlaneStatus(_ context.Context, tenantControlPlane *kamajiv1alpha1.TenantControlPlane) error {
+	tenantControlPlane.Status.Kubernetes.Version.Status = r.computeStatus(tenantControlPlane)
+	if *tenantControlPlane.Status.Kubernetes.Version.Status == kamajiv1alpha1.VersionReady {
+		tenantControlPlane.Status.Kubernetes.Version.Version = tenantControlPlane.Spec.Kubernetes.Version
 	}
 
 	tenantControlPlane.Status.Kubernetes.Deployment = kamajiv1alpha1.KubernetesDeploymentStatus{

internal/resources/k8s_service_resource.go

@@ -100,7 +100,7 @@ func (r *KubernetesServiceResource) mutate(ctx context.Context, tenantControlPla
 		r.resource.Spec.Ports[0].Name = "kube-apiserver"
 		r.resource.Spec.Ports[0].Protocol = corev1.ProtocolTCP
 		r.resource.Spec.Ports[0].Port = tenantControlPlane.Spec.NetworkProfile.Port
-		r.resource.Spec.Ports[0].TargetPort = intstr.FromInt(int(tenantControlPlane.Spec.NetworkProfile.Port))
+		r.resource.Spec.Ports[0].TargetPort = intstr.FromInt32(tenantControlPlane.Spec.NetworkProfile.Port)
 
 		switch tenantControlPlane.Spec.ControlPlane.Service.ServiceType {
 		case kamajiv1alpha1.ServiceTypeLoadBalancer:

internal/resources/konnectivity/agent.go

@@ -7,6 +7,7 @@ import (
 	"context"
 	"fmt"
 
+	"github.com/blang/semver"
 	"github.com/prometheus/client_golang/prometheus"
 	appsv1 "k8s.io/api/apps/v1"
 	corev1 "k8s.io/api/core/v1"
@@ -36,6 +37,19 @@ func (r *Agent) GetHistogram() prometheus.Histogram {
 	return agentCollector
 }
 
+func (r *Agent) agentVersion(tcp *kamajiv1alpha1.TenantControlPlane) string {
+	if tcp.Spec.Addons.Konnectivity.KonnectivityAgentSpec.Version != "" {
+		return tcp.Spec.Addons.Konnectivity.KonnectivityAgentSpec.Version
+	}
+
+	version, parsedErr := semver.ParseTolerant(tcp.Spec.Kubernetes.Version)
+	if parsedErr != nil {
+		return ""
+	}
+
+	return fmt.Sprintf("v0.%d.0", version.Minor)
+}
+
 func (r *Agent) ShouldStatusBeUpdated(_ context.Context, tcp *kamajiv1alpha1.TenantControlPlane) bool {
 	return tcp.Spec.Addons.Konnectivity == nil && (tcp.Status.Addons.Konnectivity.Agent.Namespace != "" || tcp.Status.Addons.Konnectivity.Agent.Name != "") ||
 		tcp.Spec.Addons.Konnectivity != nil && (tcp.Status.Addons.Konnectivity.Agent.Namespace != r.resource.GetNamespace() || tcp.Status.Addons.Konnectivity.Agent.Name != r.resource.GetName()) ||
@@ -116,7 +130,7 @@ func (r *Agent) CreateOrUpdate(ctx context.Context, tenantControlPlane *kamajiv1
 			obj.SetName(r.resource.GetName())
 			obj.SetNamespace(r.resource.GetNamespace())
 
-			if cleanupErr := r.tenantClient.Delete(ctx, &obj); cleanupErr != nil {
+			if cleanupErr := r.tenantClient.Delete(ctx, &obj); cleanupErr != nil && !k8serrors.IsNotFound(cleanupErr) {
 				log.FromContext(ctx, "resource", r.GetName()).Error(cleanupErr, "cannot cleanup older appsv1.Deployment")
 			}
 		case tenantControlPlane.Spec.Addons.Konnectivity.KonnectivityAgentSpec.Mode == kamajiv1alpha1.KonnectivityAgentModeDeployment &&
@@ -125,7 +139,7 @@ func (r *Agent) CreateOrUpdate(ctx context.Context, tenantControlPlane *kamajiv1
 			obj.SetName(r.resource.GetName())
 			obj.SetNamespace(r.resource.GetNamespace())
 
-			if cleanupErr := r.tenantClient.Delete(ctx, &obj); cleanupErr != nil {
+			if cleanupErr := r.tenantClient.Delete(ctx, &obj); cleanupErr != nil && !k8serrors.IsNotFound(cleanupErr) {
 				log.FromContext(ctx, "resource", r.GetName()).Error(cleanupErr, "cannot cleanup older appsv1.DaemonSet")
 			}
 		}
@@ -190,6 +204,7 @@ func (r *Agent) mutate(ctx context.Context, tenantControlPlane *kamajiv1alpha1.T
 		podTemplateSpec.SetLabels(utilities.MergeMaps(podTemplateSpec.GetLabels(), specSelector.MatchLabels))
 		podTemplateSpec.Spec.PriorityClassName = "system-cluster-critical"
 		podTemplateSpec.Spec.Tolerations = tenantControlPlane.Spec.Addons.Konnectivity.KonnectivityAgentSpec.Tolerations
+		podTemplateSpec.Spec.HostNetwork = tenantControlPlane.Spec.Addons.Konnectivity.KonnectivityAgentSpec.HostNetwork
 		podTemplateSpec.Spec.NodeSelector = map[string]string{
 			"kubernetes.io/os": "linux",
 		}
@@ -218,7 +233,7 @@ func (r *Agent) mutate(ctx context.Context, tenantControlPlane *kamajiv1alpha1.T
 			podTemplateSpec.Spec.Containers = make([]corev1.Container, 1)
 		}
 
-		podTemplateSpec.Spec.Containers[0].Image = fmt.Sprintf("%s:%s", tenantControlPlane.Spec.Addons.Konnectivity.KonnectivityAgentSpec.Image, tenantControlPlane.Spec.Addons.Konnectivity.KonnectivityAgentSpec.Version)
+		podTemplateSpec.Spec.Containers[0].Image = fmt.Sprintf("%s:%s", tenantControlPlane.Spec.Addons.Konnectivity.KonnectivityAgentSpec.Image, r.agentVersion(tenantControlPlane))
 		podTemplateSpec.Spec.Containers[0].Name = AgentName
 		podTemplateSpec.Spec.Containers[0].Command = []string{"/proxy-agent"}
 

internal/resources/konnectivity/certificate_resource.go

@@ -5,7 +5,9 @@ package konnectivity
 
 import (
 	"context"
+	"crypto/x509"
 	"fmt"
+	"time"
 
 	"github.com/prometheus/client_golang/prometheus"
 	corev1 "k8s.io/api/core/v1"
@@ -27,8 +29,9 @@ import (
 )
 
 type CertificateResource struct {
-	resource *corev1.Secret
-	Client   client.Client
+	resource                *corev1.Secret
+	Client                  client.Client
+	CertExpirationThreshold time.Duration
 }
 
 func (r *CertificateResource) GetHistogram() prometheus.Histogram {
@@ -100,6 +103,16 @@ func (r *CertificateResource) mutate(ctx context.Context, tenantControlPlane *ka
 	return func() error {
 		logger := log.FromContext(ctx, "resource", r.GetName())
 
+		// Retrieving the TenantControlPlane CA:
+		// this is required to trigger a new generation in case of Certificate Authority rotation.
+		namespacedName := k8stypes.NamespacedName{Namespace: tenantControlPlane.GetNamespace(), Name: tenantControlPlane.Status.Certificates.CA.SecretName}
+		secretCA := &corev1.Secret{}
+		if err := r.Client.Get(ctx, namespacedName, secretCA); err != nil {
+			logger.Error(err, "cannot retrieve the CA secret")
+
+			return err
+		}
+
 		r.resource.SetLabels(utilities.MergeMaps(
 			r.resource.GetLabels(),
 			utilities.KamajiLabels(tenantControlPlane.GetName(), r.GetName()),
@@ -117,23 +130,20 @@ func (r *CertificateResource) mutate(ctx context.Context, tenantControlPlane *ka
 		isRotationRequested := utilities.IsRotationRequested(r.resource)
 
 		if checksum := tenantControlPlane.Status.Addons.Konnectivity.Certificate.Checksum; !isRotationRequested && (len(checksum) > 0 && checksum == utilities.CalculateMapChecksum(r.resource.Data)) {
-			isValid, err := crypto.IsValidCertificateKeyPairBytes(r.resource.Data[corev1.TLSCertKey], r.resource.Data[corev1.TLSPrivateKeyKey])
+			isCAValid, err := crypto.VerifyCertificate(r.resource.Data[corev1.TLSCertKey], secretCA.Data[kubeadmconstants.CACertName], x509.ExtKeyUsageServerAuth)
+			if err != nil {
+				logger.Info(fmt.Sprintf("certificate-authority verify failed: %s", err.Error()))
+			}
+
+			isValid, err := crypto.IsValidCertificateKeyPairBytes(r.resource.Data[corev1.TLSCertKey], r.resource.Data[corev1.TLSPrivateKeyKey], r.CertExpirationThreshold)
 			if err != nil {
 				logger.Info(fmt.Sprintf("%s certificate-private_key pair is not valid: %s", konnectivityCertAndKeyBaseName, err.Error()))
 			}
-			if isValid {
+			if isCAValid && isValid {
 				return nil
 			}
 		}
 
-		namespacedName := k8stypes.NamespacedName{Namespace: tenantControlPlane.GetNamespace(), Name: tenantControlPlane.Status.Certificates.CA.SecretName}
-		secretCA := &corev1.Secret{}
-		if err := r.Client.Get(ctx, namespacedName, secretCA); err != nil {
-			logger.Error(err, "cannot retrieve the CA secret")
-
-			return err
-		}
-
 		ca := kubeadm.CertificatePrivateKeyPair{
 			Name:        kubeadmconstants.CACertAndKeyBaseName,
 			Certificate: secretCA.Data[kubeadmconstants.CACertName],

internal/resources/kubeconfig.go

@@ -7,6 +7,7 @@ import (
 	"context"
 	"fmt"
 	"strings"
+	"time"
 
 	"github.com/prometheus/client_golang/prometheus"
 	corev1 "k8s.io/api/core/v1"
@@ -33,11 +34,12 @@ const (
 )
 
 type KubeconfigResource struct {
-	resource           *corev1.Secret
-	Client             client.Client
-	Name               string
-	KubeConfigFileName string
-	TmpDirectory       string
+	resource                *corev1.Secret
+	Client                  client.Client
+	Name                    string
+	KubeConfigFileName      string
+	TmpDirectory            string
+	CertExpirationThreshold time.Duration
 }
 
 func (r *KubeconfigResource) GetHistogram() prometheus.Histogram {
@@ -189,8 +191,8 @@ func (r *KubeconfigResource) mutate(ctx context.Context, tenantControlPlane *kam
 		shouldCreate = shouldCreate || len(r.resource.Data) == 0                       // Missing data key
 		shouldCreate = shouldCreate || len(r.resource.Data[r.KubeConfigFileName]) == 0 // Missing kubeconfig file, must be generated
 		shouldCreate = shouldCreate || !kubeadm.IsKubeconfigCAValid(r.resource.Data[r.KubeConfigFileName], caCertificatesSecret.Data[kubeadmconstants.CACertName])
-		shouldCreate = shouldCreate || !kubeadm.IsKubeconfigValid(r.resource.Data[r.KubeConfigFileName]) // invalid kubeconfig, or expired client certificate
-		shouldCreate = shouldCreate || status.Checksum != checksum || len(r.resource.UID) == 0           // Wrong checksum
+		shouldCreate = shouldCreate || !kubeadm.IsKubeconfigValid(r.resource.Data[r.KubeConfigFileName], r.CertExpirationThreshold) // invalid kubeconfig, or expired client certificate
+		shouldCreate = shouldCreate || status.Checksum != checksum || len(r.resource.UID) == 0                                      // Wrong checksum
 
 		shouldRotate := utilities.IsRotationRequested(r.resource)
 

internal/upgrade/kubeadm_version.go

@@ -4,5 +4,5 @@
 package upgrade
 
 const (
-	KubeadmVersion = "v1.33.2"
+	KubeadmVersion = "v1.34.0"
 )

internal/utilities/certs_rotation.go

@@ -4,6 +4,8 @@
 package utilities
 
 import (
+	"time"
+
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"sigs.k8s.io/controller-runtime/pkg/client"
 )
@@ -34,7 +36,7 @@ func SetLastRotationTimestamp(obj client.Object) {
 		annotations = map[string]string{}
 	}
 
-	annotations[RotateCertificateRequestAnnotation] = metav1.Now().String()
+	annotations[RotateCertificateRequestAnnotation] = metav1.Now().Format(time.RFC3339)
 
 	obj.SetAnnotations(annotations)
 }

internal/webhook/chainer.go

@@ -25,18 +25,21 @@ type handlersChainer struct {
 //nolint:gocognit
 func (h handlersChainer) Handler(object runtime.Object, routeHandlers ...handlers.Handler) admission.HandlerFunc {
 	return func(ctx context.Context, req admission.Request) admission.Response {
-		decodedObj, oldDecodedObj := object.DeepCopyObject(), object.DeepCopyObject()
+		var decodedObj, oldDecodedObj runtime.Object
+		if object != nil {
+			decodedObj, oldDecodedObj = object.DeepCopyObject(), object.DeepCopyObject()
 
-		switch req.Operation {
-		case admissionv1.Delete:
-			// When deleting the OldObject struct field contains the object being deleted:
-			// https://github.com/kubernetes/kubernetes/pull/76346
-			if err := h.decoder.DecodeRaw(req.OldObject, decodedObj); err != nil {
-				return admission.Errored(http.StatusInternalServerError, errors.Wrap(err, fmt.Sprintf("unable to decode deleted object into %T", object)))
-			}
-		default:
-			if err := h.decoder.Decode(req, decodedObj); err != nil {
-				return admission.Errored(http.StatusInternalServerError, errors.Wrap(err, fmt.Sprintf("unable to decode into %T", object)))
+			switch req.Operation {
+			case admissionv1.Delete:
+				// When deleting the OldObject struct field contains the object being deleted:
+				// https://github.com/kubernetes/kubernetes/pull/76346
+				if err := h.decoder.DecodeRaw(req.OldObject, decodedObj); err != nil {
+					return admission.Errored(http.StatusInternalServerError, errors.Wrap(err, fmt.Sprintf("unable to decode deleted object into %T", object)))
+				}
+			default:
+				if err := h.decoder.Decode(req, decodedObj); err != nil {
+					return admission.Errored(http.StatusInternalServerError, errors.Wrap(err, fmt.Sprintf("unable to decode into %T", object)))
+				}
 			}
 		}
 

internal/webhook/handlers/tcp_defaults.go

@@ -5,9 +5,7 @@ package handlers
 
 import (
 	"context"
-	"fmt"
 	"net"
-	"strings"
 
 	"github.com/pkg/errors"
 	"gomodules.xyz/jsonpatch/v2"
@@ -73,7 +71,10 @@ func (t TenantControlPlaneDefaults) defaultUnsetFields(tcp *kamajiv1alpha1.Tenan
 	}
 
 	if len(tcp.Spec.DataStoreSchema) == 0 {
-		dss := strings.ReplaceAll(fmt.Sprintf("%s_%s", tcp.GetNamespace(), tcp.GetName()), "-", "_")
-		tcp.Spec.DataStoreSchema = dss
+		tcp.Spec.DataStoreSchema = tcp.GetDefaultDatastoreSchema()
+	}
+
+	if len(tcp.Spec.DataStoreUsername) == 0 {
+		tcp.Spec.DataStoreUsername = tcp.GetDefaultDatastoreUsername()
 	}
 }

internal/webhook/handlers/tcp_defaults_test.go

@@ -49,7 +49,7 @@ var _ = Describe("TCP Defaulting Webhook", func() {
 		It("should issue all required patches", func() {
 			ops, err := t.OnCreate(tcp)(ctx, admission.Request{})
 			Expect(err).ToNot(HaveOccurred())
-			Expect(ops).To(HaveLen(3))
+			Expect(ops).To(HaveLen(4))
 		})
 
 		It("should default the dataStore", func() {
@@ -60,12 +60,15 @@ var _ = Describe("TCP Defaulting Webhook", func() {
 			))
 		})
 
-		It("should default the dataStoreSchema to the expected value", func() {
+		It("should default the dataStoreSchema and dataStoreUsername to the expected value", func() {
 			ops, err := t.OnCreate(tcp)(ctx, admission.Request{})
 			Expect(err).ToNot(HaveOccurred())
 			Expect(ops).To(ContainElement(
 				jsonpatch.Operation{Operation: "add", Path: "/spec/dataStoreSchema", Value: "default_tcp"},
 			))
+			Expect(ops).To(ContainElement(
+				jsonpatch.Operation{Operation: "add", Path: "/spec/dataStoreUsername", Value: "default_tcp"},
+			))
 		})
 	})
 
@@ -73,6 +76,7 @@ var _ = Describe("TCP Defaulting Webhook", func() {
 		BeforeEach(func() {
 			tcp.Spec.DataStore = "etcd"
 			tcp.Spec.DataStoreSchema = "my_tcp"
+			tcp.Spec.DataStoreUsername = "my_tcp"
 			tcp.Spec.ControlPlane.Deployment.Replicas = ptr.To(int32(2))
 		})
 

internal/webhook/handlers/write_permission.go

@@ -0,0 +1,32 @@
+// Copyright 2022 Clastix Labs
+// SPDX-License-Identifier: Apache-2.0
+
+package handlers
+
+import (
+	"context"
+	"fmt"
+
+	"gomodules.xyz/jsonpatch/v2"
+	"k8s.io/apimachinery/pkg/runtime"
+	"sigs.k8s.io/controller-runtime/pkg/webhook/admission"
+)
+
+type WritePermission struct{}
+
+func (f WritePermission) OnCreate(runtime.Object) AdmissionResponse {
+	return f.response
+}
+
+func (f WritePermission) OnDelete(runtime.Object) AdmissionResponse {
+	return f.response
+}
+
+func (f WritePermission) OnUpdate(runtime.Object, runtime.Object) AdmissionResponse {
+	return f.response
+}
+
+func (f WritePermission) response(context.Context, admission.Request) ([]jsonpatch.JsonPatchOperation, error) {
+	return nil, fmt.Errorf("the current Control Plane has limited write permissions, current changes are blocked: " +
+		"removing the webhook may lead to an inconsistent state upon its completion")
+}

internal/webhook/routes/tcp_freeze.go

@@ -4,7 +4,6 @@
 package routes
 
 import (
-	corev1 "k8s.io/api/core/v1"
 	"k8s.io/apimachinery/pkg/runtime"
 )
 
@@ -15,5 +14,5 @@ func (t TenantControlPlaneMigrate) GetPath() string {
 }
 
 func (t TenantControlPlaneMigrate) GetObject() runtime.Object {
-	return &corev1.Namespace{}
+	return nil
 }

internal/webhook/routes/tcp_writepermission.go

@@ -0,0 +1,18 @@
+// Copyright 2022 Clastix Labs
+// SPDX-License-Identifier: Apache-2.0
+
+package routes
+
+import (
+	"k8s.io/apimachinery/pkg/runtime"
+)
+
+type TenantControlPlaneWritePermission struct{}
+
+func (t TenantControlPlaneWritePermission) GetPath() string {
+	return "/write-permission"
+}
+
+func (t TenantControlPlaneWritePermission) GetObject() runtime.Object {
+	return nil
+}

main.go

@@ -9,6 +9,7 @@ import (
 	"k8s.io/apimachinery/pkg/runtime"
 
 	"github.com/clastix/kamaji/cmd"
+	kubeconfig_generator "github.com/clastix/kamaji/cmd/kubeconfig-generator"
 	"github.com/clastix/kamaji/cmd/manager"
 	"github.com/clastix/kamaji/cmd/migrate"
 )
@@ -16,9 +17,10 @@ import (
 func main() {
 	scheme := runtime.NewScheme()
 
-	root, mgr, migrator := cmd.NewCmd(scheme), manager.NewCmd(scheme), migrate.NewCmd(scheme)
+	root, mgr, migrator, kubeconfigGenerator := cmd.NewCmd(scheme), manager.NewCmd(scheme), migrate.NewCmd(scheme), kubeconfig_generator.NewCmd(scheme)
 	root.AddCommand(mgr)
 	root.AddCommand(migrator)
+	root.AddCommand(kubeconfigGenerator)
 
 	if err := root.Execute(); err != nil {
 		os.Exit(1)