wip

Signed-off-by: Massimiliano Giovagnoli <me@maxgio.it>

.github/maintainers.yaml

@@ -0,0 +1,18 @@
+- name: Adriano Pezzuto
+  github: https://github.com/bsctl
+  company: Clastix
+  projects:
+    - https://github.com/clastix/capsule
+    - https://github.com/clastix/capsule-proxy
+- name: Dario Tranchitella
+  github: https://github.com/prometherion
+  company: Clastix
+  projects:
+    - https://github.com/clastix/capsule
+    - https://github.com/clastix/capsule-proxy
+- name: Maksim Fedotov
+  github: https://github.com/MaxFedotov
+  company: wargaming.net
+  projects:
+    - https://github.com/clastix/capsule
+    - https://github.com/clastix/capsule-proxy

.github/workflows/ci.yml

@@ -24,7 +24,7 @@ jobs:
       - name: Run golangci-lint
         uses: golangci/golangci-lint-action@v2.3.0
         with:
-          version: latest
+          version: v1.45.2
           only-new-issues: false
           args: --timeout 2m --config .golangci.yml
   diff:
@@ -36,7 +36,7 @@ jobs:
           fetch-depth: 0
       - uses: actions/setup-go@v2
         with:
-          go-version: '^1.16'
+          go-version: '1.18'
       - run: make installer
       - name: Checking if YAML installer file is not aligned
         run: if [[ $(git diff | wc -l) -gt 0 ]]; then echo ">>> Untracked generated files have not been committed" && git --no-pager diff && exit 1; fi

.github/workflows/docker-ci.yml

@@ -36,6 +36,7 @@ jobs:
         with:
           images: |
              quay.io/${{ github.repository }}
+             docker.io/${{ github.repository }}
           tags: |
             type=semver,pattern={{raw}}
           flavor: |
@@ -68,6 +69,13 @@ jobs:
           username: ${{ github.repository_owner }}+github
           password: ${{ secrets.BOT_QUAY_IO }}
 
+      - name: Login to docker.io Container Registry
+        uses: docker/login-action@v1 
+        with:
+          registry: docker.io
+          username: ${{ secrets.USER_DOCKER_IO }}
+          password: ${{ secrets.BOT_DOCKER_IO }}
+
       - name: Build and push
         id: build-release
         uses: docker/build-push-action@v2

.github/workflows/e2e.yml

@@ -5,8 +5,9 @@ on:
     branches: [ "*" ]
     paths:
       - '.github/workflows/e2e.yml'
-      - 'api/*'
-      - 'controllers/*'
+      - 'api/**'
+      - 'controllers/**'
+      - 'pkg/**'
       - 'e2e/*'
       - 'Dockerfile'
       - 'go.*'
@@ -16,8 +17,9 @@ on:
     branches: [ "*" ]
     paths:
       - '.github/workflows/e2e.yml'
-      - 'api/*'
-      - 'controllers/*'
+      - 'api/**'
+      - 'controllers/**'
+      - 'pkg/**'
       - 'e2e/*'
       - 'Dockerfile'
       - 'go.*'
@@ -28,8 +30,9 @@ jobs:
   kind:
     name: Kubernetes
     strategy:
+      fail-fast: false
       matrix:
-        k8s-version: ['v1.16.15', 'v1.17.11', 'v1.18.8', 'v1.19.4', 'v1.20.7', 'v1.21.2', 'v1.22.0']
+        k8s-version: ['v1.16.15', 'v1.17.11', 'v1.18.8', 'v1.19.4', 'v1.20.7', 'v1.21.2', 'v1.22.4', 'v1.23.6', 'v1.24.1']
     runs-on: ubuntu-18.04
     steps:
       - uses: actions/checkout@v2
@@ -37,21 +40,16 @@ jobs:
           fetch-depth: 0
       - uses: actions/setup-go@v2
         with:
-          go-version: '^1.16'
+          go-version: '1.18'
       - run: make manifests
       - name: Checking if manifests are disaligned
         run: test -z "$(git diff 2> /dev/null)"
       - name: Checking if manifests generated untracked files
         run: test -z "$(git ls-files --others --exclude-standard 2> /dev/null)"
-      - name: Installing Ginkgo
-        run: go get github.com/onsi/ginkgo/ginkgo
-      - uses: actions/setup-go@v2
-        with:
-          go-version: '^1.16'
       - uses: engineerd/setup-kind@v0.5.0
         with:
           skipClusterCreation: true
-          version: v0.11.1
+          version: v0.14.0
       - uses: azure/setup-helm@v1
         with:
           version: 3.3.4

.github/workflows/gosec.yml

@@ -0,0 +1,18 @@
+name: CI gosec
+on:
+  push:
+    branches: [ "*" ]
+  pull_request:
+    branches: [ "*" ]
+jobs:
+  tests:
+    runs-on: ubuntu-latest
+    env:
+      GO111MODULE: on
+    steps:
+      - name: Checkout Source
+        uses: actions/checkout@v2
+      - name: Run Gosec Security Scanner
+        uses: securego/gosec@master
+        with:
+          args: ./...

.github/workflows/helm.yml

@@ -6,9 +6,6 @@ on:
     tags: [ "helm-v*" ]
   pull_request:
     branches: [ "*" ]
-  create:
-    branches: [ "*" ]
-    tags: [ "helm-v*" ]
 
 jobs:
   lint:

.gitignore

@@ -22,9 +22,11 @@ bin
 *.swp
 *.swo
 *~
+.vscode
 
 **/*.kubeconfig
 **/*.crt
 **/*.key
 .DS_Store
+*.tgz
 

.golangci.yml

@@ -1,51 +1,39 @@
 linters-settings:
   govet:
     check-shadowing: true
-  golint:
-    min-confidence: 0
-  maligned:
-    suggest-new: true
-  goimports:
-    local-prefixes: github.com/clastix/capsule
   dupl:
     threshold: 100
   goconst:
     min-len: 2
     min-occurrences: 2
+  cyclop:
+    max-complexity: 27
+  gocognit:
+    min-complexity: 50
+  gci:
+    sections:
+      - standard
+      - default
+      - prefix(github.com/clastix/capsule)
 linters:
-  disable-all: true
-  enable:
-    - bodyclose
-    - deadcode
-    - depguard
-    - dogsled
-    - dupl
-    - errcheck
-    - goconst
-    - gocritic
-    - gofmt
-    - goimports
-    - golint
-    - goprintffuncname
-    - gosec
-    - gosimple
-    - govet
-    - ineffassign
-    - interfacer
-    - misspell
-    - nolintlint
-    - rowserrcheck
-    - scopelint
-    - staticcheck
-    - structcheck
-    - stylecheck
-    - typecheck
-    - unconvert
-    - unparam
-    - unused
-    - varcheck
-    - whitespace
+  enable-all: true
+  disable:
+    - funlen
+    - gochecknoinits
+    - lll
+    - exhaustivestruct
     - maligned
+    - interfacer
+    - scopelint
+    - golint
+    - gochecknoglobals
+    - goerr113
+    - gomnd
+    - paralleltest
+    - ireturn
+    - testpackage
+    - varnamelen
+    - wrapcheck
 
 issues:
   exclude:

ADOPTERS.md

@@ -0,0 +1,5 @@
+# Adopters
+
+This is a list of companies that have adopted Capsule, feel free to open a Pull-Request to get yours listed.
+
+## Adopters list (alphabetically)

Dockerfile

@@ -1,5 +1,5 @@
 # Build the manager binary
-FROM golang:1.16 as builder
+FROM golang:1.18 as builder
 
 ARG TARGETARCH
 ARG GIT_HEAD_COMMIT

Makefile

@@ -2,7 +2,7 @@
 VERSION ?= $$(git describe --abbrev=0 --tags --match "v*")
 
 # Default bundle image tag
-BUNDLE_IMG ?= quay.io/clastix/capsule:$(VERSION)-bundle
+BUNDLE_IMG ?= clastix/capsule:$(VERSION)-bundle
 # Options for 'bundle-build'
 ifneq ($(origin CHANNELS), undefined)
 BUNDLE_CHANNELS := --channels=$(CHANNELS)
@@ -13,7 +13,7 @@ endif
 BUNDLE_METADATA_OPTS ?= $(BUNDLE_CHANNELS) $(BUNDLE_DEFAULT_CHANNEL)
 
 # Image URL to use all building/pushing image targets
-IMG ?= quay.io/clastix/capsule:$(VERSION)
+IMG ?= clastix/capsule:$(VERSION)
 # Produce CRDs that work back to Kubernetes 1.11 (no version conversion)
 CRD_OPTIONS ?= "crd:preserveUnknownFields=false"
 
@@ -40,12 +40,12 @@ test: generate manifests
 	go test ./... -coverprofile cover.out
 
 # Build manager binary
-manager: generate fmt vet
-	go build -o bin/manager main.go
+manager: generate golint
+	go build -o bin/manager
 
 # Run against the configured Kubernetes cluster in ~/.kube/config
 run: generate manifests
-	go run ./main.go
+	go run .
 
 # Creates the single file to install Capsule without any external dependency
 installer: manifests kustomize
@@ -78,6 +78,58 @@ manifests: controller-gen
 generate: controller-gen
 	$(CONTROLLER_GEN) object:headerFile="hack/boilerplate.go.txt" paths="./..."
 
+# Setup development env
+# Usage: 
+# 	LAPTOP_HOST_IP=<YOUR_LAPTOP_IP> make dev-setup
+# For example:
+#	LAPTOP_HOST_IP=192.168.10.101 make dev-setup
+define TLS_CNF
+[ req ]
+default_bits       = 4096
+distinguished_name = req_distinguished_name
+req_extensions     = req_ext
+[ req_distinguished_name ]
+countryName                = SG
+stateOrProvinceName        = SG
+localityName               = SG
+organizationName           = CAPSULE
+commonName                 = CAPSULE
+[ req_ext ]
+subjectAltName = @alt_names
+[alt_names]
+IP.1   = $(LAPTOP_HOST_IP)
+endef
+export TLS_CNF
+dev-setup:
+	kubectl -n capsule-system scale deployment capsule-controller-manager --replicas=0
+	mkdir -p /tmp/k8s-webhook-server/serving-certs
+	echo "$${TLS_CNF}" > _tls.cnf
+	openssl req -newkey rsa:4096 -days 3650 -nodes -x509 \
+		-subj "/C=SG/ST=SG/L=SG/O=CAPSULE/CN=CAPSULE" \
+		-extensions req_ext \
+		-config _tls.cnf \
+		-keyout /tmp/k8s-webhook-server/serving-certs/tls.key \
+		-out /tmp/k8s-webhook-server/serving-certs/tls.crt
+	rm -f _tls.cnf 
+	export WEBHOOK_URL="https://$${LAPTOP_HOST_IP}:9443"; \
+	export CA_BUNDLE=`openssl base64 -in /tmp/k8s-webhook-server/serving-certs/tls.crt | tr -d '\n'`; \
+	kubectl patch MutatingWebhookConfiguration capsule-mutating-webhook-configuration \
+		--type='json' -p="[\
+			{'op': 'replace', 'path': '/webhooks/0/clientConfig', 'value':{'url':\"$${WEBHOOK_URL}/mutate-v1-namespace-owner-reference\",'caBundle':\"$${CA_BUNDLE}\"}}\
+		]" && \
+	kubectl patch ValidatingWebhookConfiguration capsule-validating-webhook-configuration \
+		--type='json' -p="[\
+			{'op': 'replace', 'path': '/webhooks/0/clientConfig', 'value':{'url':\"$${WEBHOOK_URL}/cordoning\",'caBundle':\"$${CA_BUNDLE}\"}},\
+			{'op': 'replace', 'path': '/webhooks/1/clientConfig', 'value':{'url':\"$${WEBHOOK_URL}/ingresses\",'caBundle':\"$${CA_BUNDLE}\"}},\
+			{'op': 'replace', 'path': '/webhooks/2/clientConfig', 'value':{'url':\"$${WEBHOOK_URL}/namespaces\",'caBundle':\"$${CA_BUNDLE}\"}},\
+			{'op': 'replace', 'path': '/webhooks/3/clientConfig', 'value':{'url':\"$${WEBHOOK_URL}/networkpolicies\",'caBundle':\"$${CA_BUNDLE}\"}},\
+			{'op': 'replace', 'path': '/webhooks/4/clientConfig', 'value':{'url':\"$${WEBHOOK_URL}/pods\",'caBundle':\"$${CA_BUNDLE}\"}},\
+			{'op': 'replace', 'path': '/webhooks/5/clientConfig', 'value':{'url':\"$${WEBHOOK_URL}/persistentvolumeclaims\",'caBundle':\"$${CA_BUNDLE}\"}},\
+			{'op': 'replace', 'path': '/webhooks/6/clientConfig', 'value':{'url':\"$${WEBHOOK_URL}/services\",'caBundle':\"$${CA_BUNDLE}\"}},\
+			{'op': 'replace', 'path': '/webhooks/7/clientConfig', 'value':{'url':\"$${WEBHOOK_URL}/tenants\",'caBundle':\"$${CA_BUNDLE}\"}},\
+			{'op': 'replace', 'path': '/webhooks/8/clientConfig', 'value':{'url':\"$${WEBHOOK_URL}/nodes\",'caBundle':\"$${CA_BUNDLE}\"}}\
+		]";
+
 # Build the docker image
 docker-build: test
 	docker build . -t ${IMG} --build-arg GIT_HEAD_COMMIT=$(GIT_HEAD_COMMIT) \
@@ -93,23 +145,33 @@ docker-push:
 
 CONTROLLER_GEN = $(shell pwd)/bin/controller-gen
 controller-gen: ## Download controller-gen locally if necessary.
-	$(call go-get-tool,$(CONTROLLER_GEN),sigs.k8s.io/controller-tools/cmd/controller-gen@v0.5.0)
+	$(call go-install-tool,$(CONTROLLER_GEN),sigs.k8s.io/controller-tools/cmd/controller-gen@v0.5.0)
+
+GINKGO = $(shell pwd)/bin/ginkgo
+ginkgo: ## Download ginkgo locally if necessary.
+	$(call go-install-tool,$(KUSTOMIZE),github.com/onsi/ginkgo/ginkgo@v1.16.5)
 
 KUSTOMIZE = $(shell pwd)/bin/kustomize
 kustomize: ## Download kustomize locally if necessary.
-	$(call go-get-tool,$(KUSTOMIZE),sigs.k8s.io/kustomize/kustomize/v3@v3.8.7)
+	$(call install-kustomize,$(KUSTOMIZE),3.8.7)
 
-# go-get-tool will 'go get' any package $2 and install it to $1.
-PROJECT_DIR := $(shell dirname $(abspath $(lastword $(MAKEFILE_LIST))))
-define go-get-tool
+define install-kustomize
 @[ -f $(1) ] || { \
 set -e ;\
-TMP_DIR=$$(mktemp -d) ;\
-cd $$TMP_DIR ;\
-go mod init tmp ;\
-echo "Downloading $(2)" ;\
-GOBIN=$(PROJECT_DIR)/bin go get $(2) ;\
-rm -rf $$TMP_DIR ;\
+echo "Installing v$(2)" ;\
+cd bin ;\
+wget "https://raw.githubusercontent.com/kubernetes-sigs/kustomize/master/hack/install_kustomize.sh" ;\
+bash ./install_kustomize.sh $(2) ;\
+}
+endef
+
+# go-install-tool will 'go install' any package $2 and install it to $1.
+PROJECT_DIR := $(shell dirname $(abspath $(lastword $(MAKEFILE_LIST))))
+define go-install-tool
+@[ -f $(1) ] || { \
+set -e ;\
+echo "Installing $(2)" ;\
+GOBIN=$(PROJECT_DIR)/bin go install $(2) ;\
 }
 endef
 
@@ -135,7 +197,7 @@ golint:
 
 # Running e2e tests in a KinD instance
 .PHONY: e2e
-e2e/%:
+e2e/%: ginkgo
 	kind create cluster --name capsule --image=kindest/node:$*
 	make docker-build
 	kind load docker-image --nodes capsule-control-plane --name capsule $(IMG)
@@ -151,5 +213,5 @@ e2e/%:
 		--set 'manager.readinessProbe.failureThreshold=10' \
 		capsule \
 		./charts/capsule
-	ginkgo -v -tags e2e ./e2e
+	$(GINKGO) -v -tags e2e ./e2e
 	kind delete cluster --name capsule

README.md

@@ -5,6 +5,9 @@
   <a href="https://github.com/clastix/capsule/releases">
     <img src="https://img.shields.io/github/v/release/clastix/capsule"/>
   </a>
+  <a href="https://charmhub.io/capsule-k8s">
+    <img src="https://charmhub.io/capsule-k8s/badge.svg"/>
+  </a>
 </p>
 
 <p align="center">
@@ -13,162 +16,92 @@
 
 ---
 
+**Join the community** on the [#capsule](https://kubernetes.slack.com/archives/C03GETTJQRL) channel in the [Kubernetes Slack](https://slack.k8s.io/).
+
 # Kubernetes multi-tenancy made easy
-**Capsule** helps to implement a multi-tenancy and policy-based environment in your Kubernetes cluster. It is not intended to be yet another _PaaS_, instead, it has been designed as a micro-services-based ecosystem with the minimalist approach, leveraging only on upstream Kubernetes.
+
+**Capsule** implements a multi-tenant and policy-based environment in your Kubernetes cluster. It is designed as a micro-services-based ecosystem with the minimalist approach, leveraging only on upstream Kubernetes.
 
 # What's the problem with the current status?
 
-Kubernetes introduces the _Namespace_ object type to create logical partitions of the cluster as isolated *slices*. However, implementing advanced multi-tenancy scenarios, it soon becomes complicated because of the flat structure of Kubernetes namespaces and the impossibility to share resources among namespaces belonging to the same tenant. To overcome this, cluster admins tend to provision a dedicated cluster for each groups of users, teams, or departments. As an organization grows, the number of clusters to manage and keep aligned becomes an operational nightmare, described as the well know phenomena of the _clusters sprawl_.
-
+Kubernetes introduces the _Namespace_ object type to create logical partitions of the cluster as isolated *slices*. However, implementing advanced multi-tenancy scenarios, it soon becomes complicated because of the flat structure of Kubernetes namespaces and the impossibility to share resources among namespaces belonging to the same tenant. To overcome this, cluster admins tend to provision a dedicated cluster for each groups of users, teams, or departments. As an organization grows, the number of clusters to manage and keep aligned becomes an operational nightmare, described as the well known phenomena of the _clusters sprawl_.
 
 # Entering Capsule
-Capsule takes a different approach. In a single cluster, the Capsule Controller aggregates multiple namespaces in a lightweight abstraction called _Tenant_, basically a grouping of Kubernetes Namespaces. Within each tenant, users are free to create their namespaces and share all the assigned resources while the Capsule Policy Engine keeps the different tenants isolated from each other.
 
-The _Network and Security Policies_, _Resource Quota_, _Limit Ranges_, _RBAC_, and other policies defined at the tenant level are automatically inherited by all the namespaces in the tenant. Then users are free to operate their tenants in autonomy, without the intervention of the cluster administrator. Take a look at following diagram:
+Capsule takes a different approach. In a single cluster, the Capsule Controller aggregates multiple namespaces in a lightweight abstraction called _Tenant_, basically a grouping of Kubernetes Namespaces. Within each tenant, users are free to create their namespaces and share all the assigned resources. 
 
-<p align="center" style="padding: 60px 20px">
-  <img src="assets/capsule-operator.svg" />
-</p>
+On the other side, the Capsule Policy Engine keeps the different tenants isolated from each other. _Network and Security Policies_, _Resource Quota_, _Limit Ranges_, _RBAC_, and other policies defined at the tenant level are automatically inherited by all the namespaces in the tenant. Then users are free to operate their tenants in autonomy, without the intervention of the cluster administrator. 
 
 # Features
+
 ## Self-Service
-Leave to developers the freedom to self-provision their cluster resources according to the assigned boundaries.
+
+Leave developers the freedom to self-provision their cluster resources according to the assigned boundaries.
 
 ## Preventing Clusters Sprawl
+
 Share a single cluster with multiple teams, groups of users, or departments by saving operational and management efforts.
 
 ## Governance
-Leverage Kubernetes Admission Controllers to enforce the industry security best practices and meet legal requirements.
+
+Leverage Kubernetes Admission Controllers to enforce the industry security best practices and meet policy requirements.
 
 ## Resources Control
+
 Take control of the resources consumed by users while preventing them to overtake.
 
 ## Native Experience
+
 Provide multi-tenancy with a native Kubernetes experience without introducing additional management layers, plugins, or customized binaries.
 
 ## GitOps ready
+
 Capsule is completely declarative and GitOps ready.
 
 ## Bring your own device (BYOD)
+
 Assign to tenants a dedicated set of compute, storage, and network resources and avoid the noisy neighbors' effect.
 
-# Common use cases for Capsule
-Please, refer to the corresponding [section](./docs/operator/use-cases/overview.md) in the project documentation for a detailed list of common use cases that Capsule can address.
-
-# Installation
-Make sure you have access to a Kubernetes cluster as administrator.
-
-There are two ways to install Capsule:
-
-* Use the Helm Chart available [here](./charts/capsule/README.md)
-* Use the [single YAML file installer](./config/install.yaml)
-
-## Install with the single YAML file installer
-
-Ensure you have `kubectl` installed in your `PATH`. 
-
-Clone this repository and move to the repo folder:
-
-```
-$ kubectl apply -f https://raw.githubusercontent.com/clastix/capsule/master/config/install.yaml
-```
-
-It will install the Capsule controller in a dedicated namespace `capsule-system`.
-
-## How to create Tenants
-Use the scaffold [Tenant](config/samples/capsule_v1beta1_tenant.yaml) and simply apply as cluster admin.
-
-```
-$ kubectl apply -f config/samples/capsule_v1beta1_tenant.yaml
-tenant.capsule.clastix.io/gas created
-```
-
-You can check the tenant just created as
-
-```
-$ kubectl get tenants
-NAME   STATE    NAMESPACE QUOTA   NAMESPACE COUNT   NODE SELECTOR                  AGE
-gas    Active   3                 0                 {"kubernetes.io/os":"linux"}   25s
-```
-
-## Tenant owners
-Each tenant comes with a delegated user or group of users acting as the tenant admin. In the Capsule jargon, this is called the _Tenant Owner_. Other users can operate inside a tenant with different levels of permissions and authorizations assigned directly by the Tenant Owner.
-
-Capsule does not care about the authentication strategy used in the cluster and all the Kubernetes methods of [authentication](https://kubernetes.io/docs/reference/access-authn-authz/authentication/) are supported. The only requirement to use Capsule is to assign tenant users to the the group defined by `--capsule-user-group` option, which defaults to `capsule.clastix.io`.
-
-Assignment to a group depends on the authentication strategy in your cluster.
-
-For example, if you are using `capsule.clastix.io`, users authenticated through a _X.509_ certificate must have `capsule.clastix.io` as _Organization_: `-subj "/CN=${USER}/O=capsule.clastix.io"`
-
-Users authenticated through an _OIDC token_ must have in their token:
-
-```json
-...
-"users_groups": [
-  "capsule.clastix.io",
-  "other_group"
-]
-```
-
-The [hack/create-user.sh](hack/create-user.sh) can help you set up a dummy `kubeconfig` for the `bob` user acting as owner of a tenant called `gas`
-
-```bash
-./hack/create-user.sh bob gas
-...
-certificatesigningrequest.certificates.k8s.io/bob-gas created
-certificatesigningrequest.certificates.k8s.io/bob-gas approved
-kubeconfig file is: bob-gas.kubeconfig
-to use it as bob export KUBECONFIG=bob-gas.kubeconfig
-```
-
-## Working with Tenants
-Log in to the Kubernetes cluster as `bob` tenant owner
-
-```
-$ export KUBECONFIG=bob-gas.kubeconfig
-```
-
-and create a couple of new namespaces
-
-```
-$ kubectl create namespace gas-production
-$ kubectl create namespace gas-development
-```
-
-As user `bob` you can operate with fully admin permissions:
-
-```
-$ kubectl -n gas-development run nginx --image=docker.io/nginx 
-$ kubectl -n gas-development get pods
-```
-
-but limited to only your own namespaces:
-
-```
-$ kubectl -n kube-system get pods
-Error from server (Forbidden): pods is forbidden:
-User "bob" cannot list resource "pods" in API group "" in the namespace "kube-system"
-```
-
 # Documentation
-Please, check the project [documentation](./docs/index.md) for more cool things you can do with Capsule.
 
-# Removal
-Similar to `deploy`, you can get rid of Capsule using the `remove` target.
+Please, check the project [documentation](https://capsule.clastix.io) for the cool things you can do with Capsule.
+
+# Contributions
+
+Capsule is Open Source with Apache 2 license and any contribution is welcome.
+
+## Chart Development
+
+The documentation for each chart is done with [helm-docs](https://github.com/norwoodj/helm-docs). This way we can ensure that values are consistent with the chart documentation.
+
+We have a script on the repository which will execute the helm-docs docker container, so that you don't have to worry about downloading the binary etc. Simply execute the script (Bash compatible):
 
 ```
-$ make remove
+bash scripts/helm-docs.sh
 ```
 
+## Community
+
+Join the community, share and learn from it. You can find all the resources to how to contribute code and docs, connect with people in the [community repository](https://github.com/clastix/capsule-community).
+
+## Adopters
+
+See the [ADOPTERS.md](ADOPTERS.md) file for a list of companies that are using Capsule.
+
+# Governance
+
+You can find how the Capsule project is governed [here](https://capsule.clastix.io/docs/contributing/governance).
+
+## Maintainers
+
+Please, refer to the maintainers file available [here](.github/maintainers.yaml).
+
 # FAQ
+
 - Q. How to pronounce Capsule?
 
   A. It should be pronounced as `/ˈkæpsjuːl/`.
 
-- Q. Can I contribute?
-
-  A. Absolutely! Capsule is Open Source with Apache 2 license and any contribution is welcome. Please refer to the corresponding [section](./docs/operator/contributing.md) in the documentation.
-
 - Q. Is it production grade?
 
   A. Although under frequent development and improvements, Capsule is ready to be used in production environments as currently, people are using it in public and private deployments. Check out the [release](https://github.com/clastix/capsule/releases) page for a detailed list of available versions.

api/v1alpha1/allowed_list.go

@@ -19,9 +19,12 @@ func (in *AllowedListSpec) ExactMatch(value string) (ok bool) {
 		sort.SliceStable(in.Exact, func(i, j int) bool {
 			return strings.ToLower(in.Exact[i]) < strings.ToLower(in.Exact[j])
 		})
+
 		i := sort.SearchStrings(in.Exact, value)
+
 		ok = i < len(in.Exact) && in.Exact[i] == value
 	}
+
 	return
 }
 
@@ -29,5 +32,6 @@ func (in AllowedListSpec) RegexMatch(value string) (ok bool) {
 	if len(in.Regex) > 0 {
 		ok = regexp.MustCompile(in.Regex).MatchString(value)
 	}
+
 	return
 }

api/v1alpha1/allowed_list_test.go

@@ -15,6 +15,7 @@ func TestAllowedListSpec_ExactMatch(t *testing.T) {
 		True  []string
 		False []string
 	}
+
 	for _, tc := range []tc{
 		{
 			[]string{"foo", "bar", "bizz", "buzz"},
@@ -35,9 +36,11 @@ func TestAllowedListSpec_ExactMatch(t *testing.T) {
 		a := AllowedListSpec{
 			Exact: tc.In,
 		}
+
 		for _, ok := range tc.True {
 			assert.True(t, a.ExactMatch(ok))
 		}
+
 		for _, ko := range tc.False {
 			assert.False(t, a.ExactMatch(ko))
 		}
@@ -50,6 +53,7 @@ func TestAllowedListSpec_RegexMatch(t *testing.T) {
 		True  []string
 		False []string
 	}
+
 	for _, tc := range []tc{
 		{`first-\w+-pattern`, []string{"first-date-pattern", "first-year-pattern"}, []string{"broken", "first-year", "second-date-pattern"}},
 		{``, nil, []string{"any", "value"}},
@@ -57,9 +61,11 @@ func TestAllowedListSpec_RegexMatch(t *testing.T) {
 		a := AllowedListSpec{
 			Regex: tc.Regex,
 		}
+
 		for _, ok := range tc.True {
 			assert.True(t, a.RegexMatch(ok))
 		}
+
 		for _, ko := range tc.False {
 			assert.False(t, a.RegexMatch(ko))
 		}

api/v1alpha1/capsuleconfiguration_annotations.go

@@ -0,0 +1,12 @@
+package v1alpha1
+
+const (
+	ForbiddenNodeLabelsAnnotation            = "capsule.clastix.io/forbidden-node-labels"
+	ForbiddenNodeLabelsRegexpAnnotation      = "capsule.clastix.io/forbidden-node-labels-regexp"
+	ForbiddenNodeAnnotationsAnnotation       = "capsule.clastix.io/forbidden-node-annotations"
+	ForbiddenNodeAnnotationsRegexpAnnotation = "capsule.clastix.io/forbidden-node-annotations-regexp"
+	TLSSecretNameAnnotation                  = "capsule.clastix.io/tls-secret-name"
+	MutatingWebhookConfigurationName         = "capsule.clastix.io/mutating-webhook-configuration-name"
+	ValidatingWebhookConfigurationName       = "capsule.clastix.io/validating-webhook-configuration-name"
+	EnableTLSConfigurationAnnotationName     = "capsule.clastix.io/enable-tls-configuration"
+)

api/v1alpha1/capsuleconfiguration_types.go

@@ -7,7 +7,7 @@ import (
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 )
 
-// CapsuleConfigurationSpec defines the Capsule configuration
+// CapsuleConfigurationSpec defines the Capsule configuration.
 type CapsuleConfigurationSpec struct {
 	// Names of the groups for Capsule users.
 	// +kubebuilder:default={capsule.clastix.io}
@@ -23,7 +23,7 @@ type CapsuleConfigurationSpec struct {
 // +kubebuilder:object:root=true
 // +kubebuilder:resource:scope=Cluster
 
-// CapsuleConfiguration is the Schema for the Capsule configuration API
+// CapsuleConfiguration is the Schema for the Capsule configuration API.
 type CapsuleConfiguration struct {
 	metav1.TypeMeta   `json:",inline"`
 	metav1.ObjectMeta `json:"metadata,omitempty"`
@@ -33,7 +33,7 @@ type CapsuleConfiguration struct {
 
 // +kubebuilder:object:root=true
 
-// CapsuleConfigurationList contains a list of CapsuleConfiguration
+// CapsuleConfigurationList contains a list of CapsuleConfiguration.
 type CapsuleConfigurationList struct {
 	metav1.TypeMeta `json:",inline"`
 	metav1.ListMeta `json:"metadata,omitempty"`

api/v1alpha1/conversion_hub.go

@@ -49,13 +49,13 @@ const (
 )
 
 func (t *Tenant) convertV1Alpha1OwnerToV1Beta1() capsulev1beta1.OwnerListSpec {
-	var serviceKindToAnnotationMap = map[capsulev1beta1.ProxyServiceKind][]string{
+	serviceKindToAnnotationMap := map[capsulev1beta1.ProxyServiceKind][]string{
 		capsulev1beta1.NodesProxy:           {enableNodeListingAnnotation, enableNodeUpdateAnnotation, enableNodeDeletionAnnotation},
 		capsulev1beta1.StorageClassesProxy:  {enableStorageClassListingAnnotation, enableStorageClassUpdateAnnotation, enableStorageClassDeletionAnnotation},
 		capsulev1beta1.IngressClassesProxy:  {enableIngressClassListingAnnotation, enableIngressClassUpdateAnnotation, enableIngressClassDeletionAnnotation},
 		capsulev1beta1.PriorityClassesProxy: {enablePriorityClassListingAnnotation, enablePriorityClassUpdateAnnotation, enablePriorityClassDeletionAnnotation},
 	}
-	var annotationToOperationMap = map[string]capsulev1beta1.ProxyOperation{
+	annotationToOperationMap := map[string]capsulev1beta1.ProxyOperation{
 		enableNodeListingAnnotation:           capsulev1beta1.ListOperation,
 		enableNodeUpdateAnnotation:            capsulev1beta1.UpdateOperation,
 		enableNodeDeletionAnnotation:          capsulev1beta1.DeleteOperation,
@@ -69,14 +69,15 @@ func (t *Tenant) convertV1Alpha1OwnerToV1Beta1() capsulev1beta1.OwnerListSpec {
 		enablePriorityClassUpdateAnnotation:   capsulev1beta1.UpdateOperation,
 		enablePriorityClassDeletionAnnotation: capsulev1beta1.DeleteOperation,
 	}
-	var annotationToOwnerKindMap = map[string]capsulev1beta1.OwnerKind{
+	annotationToOwnerKindMap := map[string]capsulev1beta1.OwnerKind{
 		ownerUsersAnnotation:          capsulev1beta1.UserOwner,
 		ownerGroupsAnnotation:         capsulev1beta1.GroupOwner,
 		ownerServiceAccountAnnotation: capsulev1beta1.ServiceAccountOwner,
 	}
+
 	annotations := t.GetAnnotations()
 
-	var operations = make(map[string]map[capsulev1beta1.ProxyServiceKind][]capsulev1beta1.ProxyOperation)
+	operations := make(map[string]map[capsulev1beta1.ProxyServiceKind][]capsulev1beta1.ProxyOperation)
 
 	for serviceKind, operationAnnotations := range serviceKindToAnnotationMap {
 		for _, operationAnnotation := range operationAnnotations {
@@ -86,6 +87,7 @@ func (t *Tenant) convertV1Alpha1OwnerToV1Beta1() capsulev1beta1.OwnerListSpec {
 					if _, exists := operations[owner]; !exists {
 						operations[owner] = make(map[capsulev1beta1.ProxyServiceKind][]capsulev1beta1.ProxyOperation)
 					}
+
 					operations[owner][serviceKind] = append(operations[owner][serviceKind], annotationToOperationMap[operationAnnotation])
 				}
 			}
@@ -94,7 +96,7 @@ func (t *Tenant) convertV1Alpha1OwnerToV1Beta1() capsulev1beta1.OwnerListSpec {
 
 	var owners capsulev1beta1.OwnerListSpec
 
-	var getProxySettingsForOwner = func(ownerName string) (settings []capsulev1beta1.ProxySettings) {
+	getProxySettingsForOwner := func(ownerName string) (settings []capsulev1beta1.ProxySettings) {
 		ownerOperations, ok := operations[ownerName]
 		if ok {
 			for k, v := range ownerOperations {
@@ -104,6 +106,7 @@ func (t *Tenant) convertV1Alpha1OwnerToV1Beta1() capsulev1beta1.OwnerListSpec {
 				})
 			}
 		}
+
 		return
 	}
 
@@ -129,8 +132,13 @@ func (t *Tenant) convertV1Alpha1OwnerToV1Beta1() capsulev1beta1.OwnerListSpec {
 	return owners
 }
 
+// nolint:gocognit,gocyclo,cyclop,maintidx
 func (t *Tenant) ConvertTo(dstRaw conversion.Hub) error {
-	dst := dstRaw.(*capsulev1beta1.Tenant)
+	dst, ok := dstRaw.(*capsulev1beta1.Tenant)
+	if !ok {
+		return fmt.Errorf("expected type *capsulev1beta1.Tenant, got %T", dst)
+	}
+
 	annotations := t.GetAnnotations()
 
 	// ObjectMeta
@@ -141,6 +149,7 @@ func (t *Tenant) ConvertTo(dstRaw conversion.Hub) error {
 		if dst.Spec.NamespaceOptions == nil {
 			dst.Spec.NamespaceOptions = &capsulev1beta1.NamespaceOptions{}
 		}
+
 		dst.Spec.NamespaceOptions.Quota = t.Spec.NamespaceQuota
 	}
 
@@ -152,11 +161,13 @@ func (t *Tenant) ConvertTo(dstRaw conversion.Hub) error {
 		if dst.Spec.NamespaceOptions == nil {
 			dst.Spec.NamespaceOptions = &capsulev1beta1.NamespaceOptions{}
 		}
+
 		dst.Spec.NamespaceOptions.AdditionalMetadata = &capsulev1beta1.AdditionalMetadataSpec{
 			Labels:      t.Spec.NamespacesMetadata.AdditionalLabels,
 			Annotations: t.Spec.NamespacesMetadata.AdditionalAnnotations,
 		}
 	}
+
 	if t.Spec.ServicesMetadata != nil {
 		if dst.Spec.ServiceOptions == nil {
 			dst.Spec.ServiceOptions = &capsulev1beta1.ServiceOptions{
@@ -167,13 +178,15 @@ func (t *Tenant) ConvertTo(dstRaw conversion.Hub) error {
 			}
 		}
 	}
+
 	if t.Spec.StorageClasses != nil {
 		dst.Spec.StorageClasses = &capsulev1beta1.AllowedListSpec{
 			Exact: t.Spec.StorageClasses.Exact,
 			Regex: t.Spec.StorageClasses.Regex,
 		}
 	}
-	if v, ok := t.Annotations[ingressHostnameCollisionScope]; ok {
+
+	if v, annotationOk := t.Annotations[ingressHostnameCollisionScope]; annotationOk {
 		switch v {
 		case string(capsulev1beta1.HostnameCollisionScopeCluster), string(capsulev1beta1.HostnameCollisionScopeTenant), string(capsulev1beta1.HostnameCollisionScopeNamespace):
 			dst.Spec.IngressOptions.HostnameCollisionScope = capsulev1beta1.HostnameCollisionScope(v)
@@ -181,38 +194,44 @@ func (t *Tenant) ConvertTo(dstRaw conversion.Hub) error {
 			dst.Spec.IngressOptions.HostnameCollisionScope = capsulev1beta1.HostnameCollisionScopeDisabled
 		}
 	}
+
 	if t.Spec.IngressClasses != nil {
 		dst.Spec.IngressOptions.AllowedClasses = &capsulev1beta1.AllowedListSpec{
 			Exact: t.Spec.IngressClasses.Exact,
 			Regex: t.Spec.IngressClasses.Regex,
 		}
 	}
+
 	if t.Spec.IngressHostnames != nil {
 		dst.Spec.IngressOptions.AllowedHostnames = &capsulev1beta1.AllowedListSpec{
 			Exact: t.Spec.IngressHostnames.Exact,
 			Regex: t.Spec.IngressHostnames.Regex,
 		}
 	}
+
 	if t.Spec.ContainerRegistries != nil {
 		dst.Spec.ContainerRegistries = &capsulev1beta1.AllowedListSpec{
 			Exact: t.Spec.ContainerRegistries.Exact,
 			Regex: t.Spec.ContainerRegistries.Regex,
 		}
 	}
+
 	if len(t.Spec.NetworkPolicies) > 0 {
-		dst.Spec.NetworkPolicies = &capsulev1beta1.NetworkPolicySpec{
+		dst.Spec.NetworkPolicies = capsulev1beta1.NetworkPolicySpec{
 			Items: t.Spec.NetworkPolicies,
 		}
 	}
+
 	if len(t.Spec.LimitRanges) > 0 {
-		dst.Spec.LimitRanges = &capsulev1beta1.LimitRangesSpec{
+		dst.Spec.LimitRanges = capsulev1beta1.LimitRangesSpec{
 			Items: t.Spec.LimitRanges,
 		}
 	}
+
 	if len(t.Spec.ResourceQuota) > 0 {
-		dst.Spec.ResourceQuota = &capsulev1beta1.ResourceQuotaSpec{
+		dst.Spec.ResourceQuota = capsulev1beta1.ResourceQuotaSpec{
 			Scope: func() capsulev1beta1.ResourceQuotaScope {
-				if v, ok := t.GetAnnotations()[resourceQuotaScopeAnnotation]; ok {
+				if v, annotationOk := t.GetAnnotations()[resourceQuotaScopeAnnotation]; annotationOk {
 					switch v {
 					case string(capsulev1beta1.ResourceQuotaScopeNamespace):
 						return capsulev1beta1.ResourceQuotaScopeNamespace
@@ -220,11 +239,13 @@ func (t *Tenant) ConvertTo(dstRaw conversion.Hub) error {
 						return capsulev1beta1.ResourceQuotaScopeTenant
 					}
 				}
+
 				return capsulev1beta1.ResourceQuotaScopeTenant
 			}(),
 			Items: t.Spec.ResourceQuota,
 		}
 	}
+
 	if len(t.Spec.AdditionalRoleBindings) > 0 {
 		for _, rb := range t.Spec.AdditionalRoleBindings {
 			dst.Spec.AdditionalRoleBindings = append(dst.Spec.AdditionalRoleBindings, capsulev1beta1.AdditionalRoleBindingsSpec{
@@ -233,10 +254,12 @@ func (t *Tenant) ConvertTo(dstRaw conversion.Hub) error {
 			})
 		}
 	}
+
 	if t.Spec.ExternalServiceIPs != nil {
 		if dst.Spec.ServiceOptions == nil {
 			dst.Spec.ServiceOptions = &capsulev1beta1.ServiceOptions{}
 		}
+
 		dst.Spec.ServiceOptions.ExternalServiceIPs = &capsulev1beta1.ExternalServiceIPsSpec{
 			Allowed: make([]capsulev1beta1.AllowedIP, len(t.Spec.ExternalServiceIPs.Allowed)),
 		}
@@ -256,10 +279,13 @@ func (t *Tenant) ConvertTo(dstRaw conversion.Hub) error {
 	priorityClasses := capsulev1beta1.AllowedListSpec{}
 
 	priorityClassAllowed, ok := annotations[podPriorityAllowedAnnotation]
+
 	if ok {
 		priorityClasses.Exact = strings.Split(priorityClassAllowed, ",")
 	}
+
 	priorityClassesRegexp, ok := annotations[podPriorityAllowedRegexAnnotation]
+
 	if ok {
 		priorityClasses.Regex = priorityClassesRegexp
 	}
@@ -274,12 +300,15 @@ func (t *Tenant) ConvertTo(dstRaw conversion.Hub) error {
 		if err != nil {
 			return errors.Wrap(err, fmt.Sprintf("unable to parse %s annotation on tenant %s", enableNodePortsAnnotation, t.GetName()))
 		}
+
 		if dst.Spec.ServiceOptions == nil {
 			dst.Spec.ServiceOptions = &capsulev1beta1.ServiceOptions{}
 		}
+
 		if dst.Spec.ServiceOptions.AllowedServices == nil {
 			dst.Spec.ServiceOptions.AllowedServices = &capsulev1beta1.AllowedServices{}
 		}
+
 		dst.Spec.ServiceOptions.AllowedServices.NodePort = pointer.BoolPtr(val)
 	}
 
@@ -289,12 +318,15 @@ func (t *Tenant) ConvertTo(dstRaw conversion.Hub) error {
 		if err != nil {
 			return errors.Wrap(err, fmt.Sprintf("unable to parse %s annotation on tenant %s", enableExternalNameAnnotation, t.GetName()))
 		}
+
 		if dst.Spec.ServiceOptions == nil {
 			dst.Spec.ServiceOptions = &capsulev1beta1.ServiceOptions{}
 		}
+
 		if dst.Spec.ServiceOptions.AllowedServices == nil {
 			dst.Spec.ServiceOptions.AllowedServices = &capsulev1beta1.AllowedServices{}
 		}
+
 		dst.Spec.ServiceOptions.AllowedServices.ExternalName = pointer.BoolPtr(val)
 	}
 
@@ -304,21 +336,22 @@ func (t *Tenant) ConvertTo(dstRaw conversion.Hub) error {
 		if err != nil {
 			return errors.Wrap(err, fmt.Sprintf("unable to parse %s annotation on tenant %s", enableLoadBalancerAnnotation, t.GetName()))
 		}
+
 		if dst.Spec.ServiceOptions == nil {
 			dst.Spec.ServiceOptions = &capsulev1beta1.ServiceOptions{}
 		}
+
 		if dst.Spec.ServiceOptions.AllowedServices == nil {
 			dst.Spec.ServiceOptions.AllowedServices = &capsulev1beta1.AllowedServices{}
 		}
+
 		dst.Spec.ServiceOptions.AllowedServices.LoadBalancer = pointer.BoolPtr(val)
 	}
-
 	// Status
 	dst.Status = capsulev1beta1.TenantStatus{
 		Size:       t.Status.Size,
 		Namespaces: t.Status.Namespaces,
 	}
-
 	// Remove unneeded annotations
 	delete(dst.ObjectMeta.Annotations, podAllowedImagePullPolicyAnnotation)
 	delete(dst.ObjectMeta.Annotations, podPriorityAllowedAnnotation)
@@ -347,14 +380,15 @@ func (t *Tenant) ConvertTo(dstRaw conversion.Hub) error {
 	return nil
 }
 
+// nolint:gocognit,gocyclo,cyclop
 func (t *Tenant) convertV1Beta1OwnerToV1Alpha1(src *capsulev1beta1.Tenant) {
-	var ownersAnnotations = map[string][]string{
+	ownersAnnotations := map[string][]string{
 		ownerGroupsAnnotation:         nil,
 		ownerUsersAnnotation:          nil,
 		ownerServiceAccountAnnotation: nil,
 	}
 
-	var proxyAnnotations = map[string][]string{
+	proxyAnnotations := map[string][]string{
 		enableNodeListingAnnotation:          nil,
 		enableNodeUpdateAnnotation:           nil,
 		enableNodeDeletionAnnotation:         nil,
@@ -382,6 +416,7 @@ func (t *Tenant) convertV1Beta1OwnerToV1Alpha1(src *capsulev1beta1.Tenant) {
 				ownersAnnotations[ownerServiceAccountAnnotation] = append(ownersAnnotations[ownerServiceAccountAnnotation], owner.Name)
 			}
 		}
+
 		for _, setting := range owner.ProxyOperations {
 			switch setting.Kind {
 			case capsulev1beta1.NodesProxy:
@@ -437,6 +472,7 @@ func (t *Tenant) convertV1Beta1OwnerToV1Alpha1(src *capsulev1beta1.Tenant) {
 			t.Annotations[k] = strings.Join(v, ",")
 		}
 	}
+
 	for k, v := range proxyAnnotations {
 		if len(v) > 0 {
 			t.Annotations[k] = strings.Join(v, ",")
@@ -444,8 +480,12 @@ func (t *Tenant) convertV1Beta1OwnerToV1Alpha1(src *capsulev1beta1.Tenant) {
 	}
 }
 
+// nolint:gocyclo,cyclop
 func (t *Tenant) ConvertFrom(srcRaw conversion.Hub) error {
-	src := srcRaw.(*capsulev1beta1.Tenant)
+	src, ok := srcRaw.(*capsulev1beta1.Tenant)
+	if !ok {
+		return fmt.Errorf("expected *capsulev1beta1.Tenant, got %T", srcRaw)
+	}
 
 	// ObjectMeta
 	t.ObjectMeta = src.ObjectMeta
@@ -469,47 +509,57 @@ func (t *Tenant) ConvertFrom(srcRaw conversion.Hub) error {
 			AdditionalAnnotations: src.Spec.NamespaceOptions.AdditionalMetadata.Annotations,
 		}
 	}
+
 	if src.Spec.ServiceOptions != nil && src.Spec.ServiceOptions.AdditionalMetadata != nil {
 		t.Spec.ServicesMetadata = &AdditionalMetadataSpec{
 			AdditionalLabels:      src.Spec.ServiceOptions.AdditionalMetadata.Labels,
 			AdditionalAnnotations: src.Spec.ServiceOptions.AdditionalMetadata.Annotations,
 		}
 	}
+
 	if src.Spec.StorageClasses != nil {
 		t.Spec.StorageClasses = &AllowedListSpec{
 			Exact: src.Spec.StorageClasses.Exact,
 			Regex: src.Spec.StorageClasses.Regex,
 		}
 	}
+
 	t.Annotations[ingressHostnameCollisionScope] = string(src.Spec.IngressOptions.HostnameCollisionScope)
+
 	if src.Spec.IngressOptions.AllowedClasses != nil {
 		t.Spec.IngressClasses = &AllowedListSpec{
 			Exact: src.Spec.IngressOptions.AllowedClasses.Exact,
 			Regex: src.Spec.IngressOptions.AllowedClasses.Regex,
 		}
 	}
+
 	if src.Spec.IngressOptions.AllowedHostnames != nil {
 		t.Spec.IngressHostnames = &AllowedListSpec{
 			Exact: src.Spec.IngressOptions.AllowedHostnames.Exact,
 			Regex: src.Spec.IngressOptions.AllowedHostnames.Regex,
 		}
 	}
+
 	if src.Spec.ContainerRegistries != nil {
 		t.Spec.ContainerRegistries = &AllowedListSpec{
 			Exact: src.Spec.ContainerRegistries.Exact,
 			Regex: src.Spec.ContainerRegistries.Regex,
 		}
 	}
-	if src.Spec.NetworkPolicies != nil {
+
+	if len(src.Spec.NetworkPolicies.Items) > 0 {
 		t.Spec.NetworkPolicies = src.Spec.NetworkPolicies.Items
 	}
-	if src.Spec.LimitRanges != nil {
+
+	if len(src.Spec.LimitRanges.Items) > 0 {
 		t.Spec.LimitRanges = src.Spec.LimitRanges.Items
 	}
-	if src.Spec.ResourceQuota != nil {
+
+	if len(src.Spec.ResourceQuota.Items) > 0 {
 		t.Annotations[resourceQuotaScopeAnnotation] = string(src.Spec.ResourceQuota.Scope)
 		t.Spec.ResourceQuota = src.Spec.ResourceQuota.Items
 	}
+
 	if len(src.Spec.AdditionalRoleBindings) > 0 {
 		for _, rb := range src.Spec.AdditionalRoleBindings {
 			t.Spec.AdditionalRoleBindings = append(t.Spec.AdditionalRoleBindings, AdditionalRoleBindingsSpec{
@@ -518,6 +568,7 @@ func (t *Tenant) ConvertFrom(srcRaw conversion.Hub) error {
 			})
 		}
 	}
+
 	if src.Spec.ServiceOptions != nil && src.Spec.ServiceOptions.ExternalServiceIPs != nil {
 		t.Spec.ExternalServiceIPs = &ExternalServiceIPsSpec{
 			Allowed: make([]AllowedIP, len(src.Spec.ServiceOptions.ExternalServiceIPs.Allowed)),
@@ -527,11 +578,14 @@ func (t *Tenant) ConvertFrom(srcRaw conversion.Hub) error {
 			t.Spec.ExternalServiceIPs.Allowed[i] = AllowedIP(IP)
 		}
 	}
+
 	if len(src.Spec.ImagePullPolicies) != 0 {
 		var pullPolicies []string
+
 		for _, policy := range src.Spec.ImagePullPolicies {
 			pullPolicies = append(pullPolicies, string(policy))
 		}
+
 		t.Annotations[podAllowedImagePullPolicyAnnotation] = strings.Join(pullPolicies, ",")
 	}
 
@@ -539,15 +593,24 @@ func (t *Tenant) ConvertFrom(srcRaw conversion.Hub) error {
 		if len(src.Spec.PriorityClasses.Exact) != 0 {
 			t.Annotations[podPriorityAllowedAnnotation] = strings.Join(src.Spec.PriorityClasses.Exact, ",")
 		}
+
 		if src.Spec.PriorityClasses.Regex != "" {
 			t.Annotations[podPriorityAllowedRegexAnnotation] = src.Spec.PriorityClasses.Regex
 		}
 	}
 
 	if src.Spec.ServiceOptions != nil && src.Spec.ServiceOptions.AllowedServices != nil {
-		t.Annotations[enableNodePortsAnnotation] = strconv.FormatBool(*src.Spec.ServiceOptions.AllowedServices.NodePort)
-		t.Annotations[enableExternalNameAnnotation] = strconv.FormatBool(*src.Spec.ServiceOptions.AllowedServices.ExternalName)
-		t.Annotations[enableLoadBalancerAnnotation] = strconv.FormatBool(*src.Spec.ServiceOptions.AllowedServices.LoadBalancer)
+		if src.Spec.ServiceOptions.AllowedServices.NodePort != nil {
+			t.Annotations[enableNodePortsAnnotation] = strconv.FormatBool(*src.Spec.ServiceOptions.AllowedServices.NodePort)
+		}
+
+		if src.Spec.ServiceOptions.AllowedServices.ExternalName != nil {
+			t.Annotations[enableExternalNameAnnotation] = strconv.FormatBool(*src.Spec.ServiceOptions.AllowedServices.ExternalName)
+		}
+
+		if src.Spec.ServiceOptions.AllowedServices.LoadBalancer != nil {
+			t.Annotations[enableLoadBalancerAnnotation] = strconv.FormatBool(*src.Spec.ServiceOptions.AllowedServices.LoadBalancer)
+		}
 	}
 
 	// Status

api/v1alpha1/conversion_hub_test.go

@@ -18,12 +18,14 @@ import (
 	capsulev1beta1 "github.com/clastix/capsule/api/v1beta1"
 )
 
+// nolint:maintidx
 func generateTenantsSpecs() (Tenant, capsulev1beta1.Tenant) {
 	var namespaceQuota int32 = 5
-	var nodeSelector = map[string]string{
+
+	nodeSelector := map[string]string{
 		"foo": "bar",
 	}
-	var v1alpha1AdditionalMetadataSpec = &AdditionalMetadataSpec{
+	v1alpha1AdditionalMetadataSpec := &AdditionalMetadataSpec{
 		AdditionalLabels: map[string]string{
 			"foo": "bar",
 		},
@@ -31,11 +33,11 @@ func generateTenantsSpecs() (Tenant, capsulev1beta1.Tenant) {
 			"foo": "bar",
 		},
 	}
-	var v1alpha1AllowedListSpec = &AllowedListSpec{
+	v1alpha1AllowedListSpec := &AllowedListSpec{
 		Exact: []string{"foo", "bar"},
 		Regex: "^foo*",
 	}
-	var v1beta1AdditionalMetadataSpec = &capsulev1beta1.AdditionalMetadataSpec{
+	v1beta1AdditionalMetadataSpec := &capsulev1beta1.AdditionalMetadataSpec{
 		Labels: map[string]string{
 			"foo": "bar",
 		},
@@ -43,11 +45,11 @@ func generateTenantsSpecs() (Tenant, capsulev1beta1.Tenant) {
 			"foo": "bar",
 		},
 	}
-	var v1beta1NamespaceOptions = &capsulev1beta1.NamespaceOptions{
+	v1beta1NamespaceOptions := &capsulev1beta1.NamespaceOptions{
 		Quota:              &namespaceQuota,
 		AdditionalMetadata: v1beta1AdditionalMetadataSpec,
 	}
-	var v1beta1ServiceOptions = &capsulev1beta1.ServiceOptions{
+	v1beta1ServiceOptions := &capsulev1beta1.ServiceOptions{
 		AdditionalMetadata: v1beta1AdditionalMetadataSpec,
 		AllowedServices: &capsulev1beta1.AllowedServices{
 			NodePort:     pointer.BoolPtr(false),
@@ -58,11 +60,11 @@ func generateTenantsSpecs() (Tenant, capsulev1beta1.Tenant) {
 			Allowed: []capsulev1beta1.AllowedIP{"192.168.0.1"},
 		},
 	}
-	var v1beta1AllowedListSpec = &capsulev1beta1.AllowedListSpec{
+	v1beta1AllowedListSpec := &capsulev1beta1.AllowedListSpec{
 		Exact: []string{"foo", "bar"},
 		Regex: "^foo*",
 	}
-	var networkPolicies = []networkingv1.NetworkPolicySpec{
+	networkPolicies := []networkingv1.NetworkPolicySpec{
 		{
 			Ingress: []networkingv1.NetworkPolicyIngressRule{
 				{
@@ -87,7 +89,7 @@ func generateTenantsSpecs() (Tenant, capsulev1beta1.Tenant) {
 			},
 		},
 	}
-	var limitRanges = []corev1.LimitRangeSpec{
+	limitRanges := []corev1.LimitRangeSpec{
 		{
 			Limits: []corev1.LimitRangeItem{
 				{
@@ -104,7 +106,7 @@ func generateTenantsSpecs() (Tenant, capsulev1beta1.Tenant) {
 			},
 		},
 	}
-	var resourceQuotas = []corev1.ResourceQuotaSpec{
+	resourceQuotas := []corev1.ResourceQuotaSpec{
 		{
 			Hard: map[corev1.ResourceName]resource.Quantity{
 				corev1.ResourceLimitsCPU:      resource.MustParse("8"),
@@ -118,7 +120,7 @@ func generateTenantsSpecs() (Tenant, capsulev1beta1.Tenant) {
 		},
 	}
 
-	var v1beta1Tnt = capsulev1beta1.Tenant{
+	v1beta1Tnt := capsulev1beta1.Tenant{
 		TypeMeta: metav1.TypeMeta{},
 		ObjectMeta: metav1.ObjectMeta{
 			Name: "alice",
@@ -240,13 +242,13 @@ func generateTenantsSpecs() (Tenant, capsulev1beta1.Tenant) {
 			},
 			ContainerRegistries: v1beta1AllowedListSpec,
 			NodeSelector:        nodeSelector,
-			NetworkPolicies: &capsulev1beta1.NetworkPolicySpec{
+			NetworkPolicies: capsulev1beta1.NetworkPolicySpec{
 				Items: networkPolicies,
 			},
-			LimitRanges: &capsulev1beta1.LimitRangesSpec{
+			LimitRanges: capsulev1beta1.LimitRangesSpec{
 				Items: limitRanges,
 			},
-			ResourceQuota: &capsulev1beta1.ResourceQuotaSpec{
+			ResourceQuota: capsulev1beta1.ResourceQuotaSpec{
 				Scope: capsulev1beta1.ResourceQuotaScopeNamespace,
 				Items: resourceQuotas,
 			},
@@ -256,7 +258,7 @@ func generateTenantsSpecs() (Tenant, capsulev1beta1.Tenant) {
 					Subjects: []rbacv1.Subject{
 						{
 							Kind:     "Group",
-							APIGroup: "rbac.authorization.k8s.io",
+							APIGroup: rbacv1.GroupName,
 							Name:     "system:authenticated",
 						},
 					},
@@ -274,7 +276,7 @@ func generateTenantsSpecs() (Tenant, capsulev1beta1.Tenant) {
 		},
 	}
 
-	var v1alpha1Tnt = Tenant{
+	v1alpha1Tnt := Tenant{
 		TypeMeta: metav1.TypeMeta{},
 		ObjectMeta: metav1.ObjectMeta{
 			Name: "alice",
@@ -327,7 +329,7 @@ func generateTenantsSpecs() (Tenant, capsulev1beta1.Tenant) {
 					Subjects: []rbacv1.Subject{
 						{
 							Kind:     "Group",
-							APIGroup: "rbac.authorization.k8s.io",
+							APIGroup: rbacv1.GroupName,
 							Name:     "system:authenticated",
 						},
 					},
@@ -347,10 +349,11 @@ func generateTenantsSpecs() (Tenant, capsulev1beta1.Tenant) {
 }
 
 func TestConversionHub_ConvertTo(t *testing.T) {
-	var v1beta1ConvertedTnt = capsulev1beta1.Tenant{}
+	v1beta1ConvertedTnt := capsulev1beta1.Tenant{}
 
 	v1alpha1Tnt, v1beta1tnt := generateTenantsSpecs()
 	err := v1alpha1Tnt.ConvertTo(&v1beta1ConvertedTnt)
+
 	if assert.NoError(t, err) {
 		sort.Slice(v1beta1tnt.Spec.Owners, func(i, j int) bool {
 			return v1beta1tnt.Spec.Owners[i].Name < v1beta1tnt.Spec.Owners[j].Name
@@ -364,17 +367,20 @@ func TestConversionHub_ConvertTo(t *testing.T) {
 				return owner.ProxyOperations[i].Kind < owner.ProxyOperations[j].Kind
 			})
 		}
+
 		for _, owner := range v1beta1ConvertedTnt.Spec.Owners {
 			sort.Slice(owner.ProxyOperations, func(i, j int) bool {
 				return owner.ProxyOperations[i].Kind < owner.ProxyOperations[j].Kind
 			})
 		}
+
 		assert.Equal(t, v1beta1tnt, v1beta1ConvertedTnt)
 	}
 }
 
 func TestConversionHub_ConvertFrom(t *testing.T) {
-	var v1alpha1ConvertedTnt = Tenant{}
+	v1alpha1ConvertedTnt := Tenant{}
+
 	v1alpha1Tnt, v1beta1tnt := generateTenantsSpecs()
 
 	err := v1alpha1ConvertedTnt.ConvertFrom(&v1beta1tnt)

api/v1alpha1/groupversion_info.go

@@ -12,10 +12,10 @@ import (
 )
 
 var (
-	// GroupVersion is group version used to register these objects
+	// GroupVersion is group version used to register these objects.
 	GroupVersion = schema.GroupVersion{Group: "capsule.clastix.io", Version: "v1alpha1"}
 
-	// SchemeBuilder is used to add go types to the GroupVersionKind scheme
+	// SchemeBuilder is used to add go types to the GroupVersionKind scheme.
 	SchemeBuilder = &scheme.Builder{GroupVersion: GroupVersion}
 
 	// AddToScheme adds the types in this group-version to the given scheme.

api/v1alpha1/owner.go

@@ -3,7 +3,7 @@
 
 package v1alpha1
 
-// OwnerSpec defines tenant owner name and kind
+// OwnerSpec defines tenant owner name and kind.
 type OwnerSpec struct {
 	Name string `json:"name"`
 	Kind Kind   `json:"kind"`

api/v1alpha1/tenant_func.go

@@ -13,6 +13,7 @@ func (t *Tenant) IsCordoned() bool {
 	if v, ok := t.Labels["capsule.clastix.io/cordon"]; ok && v == "enabled" {
 		return true
 	}
+
 	return false
 }
 
@@ -21,16 +22,19 @@ func (t *Tenant) IsFull() bool {
 	if t.Spec.NamespaceQuota == nil {
 		return false
 	}
+
 	return len(t.Status.Namespaces) >= int(*t.Spec.NamespaceQuota)
 }
 
 func (t *Tenant) AssignNamespaces(namespaces []corev1.Namespace) {
 	var l []string
+
 	for _, ns := range namespaces {
 		if ns.Status.Phase == corev1.NamespaceActive {
 			l = append(l, ns.GetName())
 		}
 	}
+
 	sort.Strings(l)
 
 	t.Status.Namespaces = l

api/v1alpha1/tenant_labels.go

@@ -27,5 +27,6 @@ func GetTypeLabel(t runtime.Object) (label string, err error) {
 	default:
 		err = fmt.Errorf("type %T is not mapped as Capsule label recognized", v)
 	}
+
 	return
 }

api/v1alpha1/tenant_types.go

@@ -9,7 +9,7 @@ import (
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 )
 
-// TenantSpec defines the desired state of Tenant
+// TenantSpec defines the desired state of Tenant.
 type TenantSpec struct {
 	Owner OwnerSpec `json:"owner"`
 
@@ -29,7 +29,7 @@ type TenantSpec struct {
 	ExternalServiceIPs     *ExternalServiceIPsSpec          `json:"externalServiceIPs,omitempty"`
 }
 
-// TenantStatus defines the observed state of Tenant
+// TenantStatus defines the observed state of Tenant.
 type TenantStatus struct {
 	Size       uint     `json:"size"`
 	Namespaces []string `json:"namespaces,omitempty"`
@@ -45,7 +45,7 @@ type TenantStatus struct {
 // +kubebuilder:printcolumn:name="Node selector",type="string",JSONPath=".spec.nodeSelector",description="Node Selector applied to Pods"
 // +kubebuilder:printcolumn:name="Age",type="date",JSONPath=".metadata.creationTimestamp",description="Age"
 
-// Tenant is the Schema for the tenants API
+// Tenant is the Schema for the tenants API.
 type Tenant struct {
 	metav1.TypeMeta   `json:",inline"`
 	metav1.ObjectMeta `json:"metadata,omitempty"`
@@ -56,7 +56,7 @@ type Tenant struct {
 
 // +kubebuilder:object:root=true
 
-// TenantList contains a list of Tenant
+// TenantList contains a list of Tenant.
 type TenantList struct {
 	metav1.TypeMeta `json:",inline"`
 	metav1.ListMeta `json:"metadata,omitempty"`

api/v1alpha1/zz_generated.deepcopy.go

@@ -1,3 +1,4 @@
+//go:build !ignore_autogenerated
 // +build !ignore_autogenerated
 
 // Copyright 2020-2021 Clastix Labs

api/v1beta1/allowed_list.go

@@ -19,9 +19,12 @@ func (in *AllowedListSpec) ExactMatch(value string) (ok bool) {
 		sort.SliceStable(in.Exact, func(i, j int) bool {
 			return strings.ToLower(in.Exact[i]) < strings.ToLower(in.Exact[j])
 		})
+
 		i := sort.SearchStrings(in.Exact, value)
+
 		ok = i < len(in.Exact) && in.Exact[i] == value
 	}
+
 	return
 }
 
@@ -29,5 +32,6 @@ func (in AllowedListSpec) RegexMatch(value string) (ok bool) {
 	if len(in.Regex) > 0 {
 		ok = regexp.MustCompile(in.Regex).MatchString(value)
 	}
+
 	return
 }

api/v1beta1/allowed_list_test.go

@@ -15,6 +15,7 @@ func TestAllowedListSpec_ExactMatch(t *testing.T) {
 		True  []string
 		False []string
 	}
+
 	for _, tc := range []tc{
 		{
 			[]string{"foo", "bar", "bizz", "buzz"},
@@ -35,9 +36,11 @@ func TestAllowedListSpec_ExactMatch(t *testing.T) {
 		a := AllowedListSpec{
 			Exact: tc.In,
 		}
+
 		for _, ok := range tc.True {
 			assert.True(t, a.ExactMatch(ok))
 		}
+
 		for _, ko := range tc.False {
 			assert.False(t, a.ExactMatch(ko))
 		}
@@ -50,6 +53,7 @@ func TestAllowedListSpec_RegexMatch(t *testing.T) {
 		True  []string
 		False []string
 	}
+
 	for _, tc := range []tc{
 		{`first-\w+-pattern`, []string{"first-date-pattern", "first-year-pattern"}, []string{"broken", "first-year", "second-date-pattern"}},
 		{``, nil, []string{"any", "value"}},
@@ -57,9 +61,11 @@ func TestAllowedListSpec_RegexMatch(t *testing.T) {
 		a := AllowedListSpec{
 			Regex: tc.Regex,
 		}
+
 		for _, ok := range tc.True {
 			assert.True(t, a.RegexMatch(ok))
 		}
+
 		for _, ko := range tc.False {
 			assert.False(t, a.RegexMatch(ko))
 		}

api/v1beta1/custom_resource_quota.go

@@ -0,0 +1,59 @@
+// Copyright 2020-2021 Clastix Labs
+// SPDX-License-Identifier: Apache-2.0
+
+package v1beta1
+
+import (
+	"fmt"
+	"strconv"
+)
+
+const (
+	ResourceQuotaAnnotationPrefix = "quota.resources.capsule.clastix.io"
+	ResourceUsedAnnotationPrefix  = "used.resources.capsule.clastix.io"
+)
+
+func UsedAnnotationForResource(kindGroup string) string {
+	return fmt.Sprintf("%s/%s", ResourceUsedAnnotationPrefix, kindGroup)
+}
+
+func LimitAnnotationForResource(kindGroup string) string {
+	return fmt.Sprintf("%s/%s", ResourceQuotaAnnotationPrefix, kindGroup)
+}
+
+func GetUsedResourceFromTenant(tenant Tenant, kindGroup string) (int64, error) {
+	usedStr, ok := tenant.GetAnnotations()[UsedAnnotationForResource(kindGroup)]
+	if !ok {
+		usedStr = "0"
+	}
+
+	used, _ := strconv.ParseInt(usedStr, 10, 10)
+
+	return used, nil
+}
+
+type NonLimitedResourceError struct {
+	kindGroup string
+}
+
+func NewNonLimitedResourceError(kindGroup string) *NonLimitedResourceError {
+	return &NonLimitedResourceError{kindGroup: kindGroup}
+}
+
+func (n NonLimitedResourceError) Error() string {
+	return fmt.Sprintf("resource %s is not limited for the current tenant", n.kindGroup)
+}
+
+func GetLimitResourceFromTenant(tenant Tenant, kindGroup string) (int64, error) {
+	limitStr, ok := tenant.GetAnnotations()[LimitAnnotationForResource(kindGroup)]
+	if !ok {
+		return 0, NewNonLimitedResourceError(kindGroup)
+	}
+
+	limit, err := strconv.ParseInt(limitStr, 10, 10)
+	if err != nil {
+		return 0, fmt.Errorf("resource %s limit cannot be parsed, %w", kindGroup, err)
+	}
+
+	return limit, nil
+}

api/v1beta1/deny_wildcard.go

@@ -11,5 +11,6 @@ func (t *Tenant) IsWildcardDenied() bool {
 	if v, ok := t.Annotations[denyWildcard]; ok && v == "true" {
 		return true
 	}
+
 	return false
 }

api/v1beta1/forbidden_list.go

@@ -19,9 +19,12 @@ func (in *ForbiddenListSpec) ExactMatch(value string) (ok bool) {
 		sort.SliceStable(in.Exact, func(i, j int) bool {
 			return strings.ToLower(in.Exact[i]) < strings.ToLower(in.Exact[j])
 		})
+
 		i := sort.SearchStrings(in.Exact, value)
+
 		ok = i < len(in.Exact) && in.Exact[i] == value
 	}
+
 	return
 }
 
@@ -29,5 +32,6 @@ func (in ForbiddenListSpec) RegexMatch(value string) (ok bool) {
 	if len(in.Regex) > 0 {
 		ok = regexp.MustCompile(in.Regex).MatchString(value)
 	}
+
 	return
 }

api/v1beta1/forbidden_list_test.go

@@ -15,6 +15,7 @@ func TestForbiddenListSpec_ExactMatch(t *testing.T) {
 		True  []string
 		False []string
 	}
+
 	for _, tc := range []tc{
 		{
 			[]string{"foo", "bar", "bizz", "buzz"},
@@ -35,9 +36,11 @@ func TestForbiddenListSpec_ExactMatch(t *testing.T) {
 		a := ForbiddenListSpec{
 			Exact: tc.In,
 		}
+
 		for _, ok := range tc.True {
 			assert.True(t, a.ExactMatch(ok))
 		}
+
 		for _, ko := range tc.False {
 			assert.False(t, a.ExactMatch(ko))
 		}
@@ -50,6 +53,7 @@ func TestForbiddenListSpec_RegexMatch(t *testing.T) {
 		True  []string
 		False []string
 	}
+
 	for _, tc := range []tc{
 		{`first-\w+-pattern`, []string{"first-date-pattern", "first-year-pattern"}, []string{"broken", "first-year", "second-date-pattern"}},
 		{``, nil, []string{"any", "value"}},
@@ -57,9 +61,11 @@ func TestForbiddenListSpec_RegexMatch(t *testing.T) {
 		a := ForbiddenListSpec{
 			Regex: tc.Regex,
 		}
+
 		for _, ok := range tc.True {
 			assert.True(t, a.RegexMatch(ok))
 		}
+
 		for _, ko := range tc.False {
 			assert.False(t, a.RegexMatch(ko))
 		}

api/v1beta1/groupversion_info.go

@@ -12,10 +12,10 @@ import (
 )
 
 var (
-	// GroupVersion is group version used to register these objects
+	// GroupVersion is group version used to register these objects.
 	GroupVersion = schema.GroupVersion{Group: "capsule.clastix.io", Version: "v1beta1"}
 
-	// SchemeBuilder is used to add go types to the GroupVersionKind scheme
+	// SchemeBuilder is used to add go types to the GroupVersionKind scheme.
 	SchemeBuilder = &scheme.Builder{GroupVersion: GroupVersion}
 
 	// AddToScheme adds the types in this group-version to the given scheme.

api/v1beta1/namespace_options.go

@@ -14,9 +14,11 @@ func (t *Tenant) hasForbiddenNamespaceLabelsAnnotations() bool {
 	if _, ok := t.Annotations[ForbiddenNamespaceLabelsAnnotation]; ok {
 		return true
 	}
+
 	if _, ok := t.Annotations[ForbiddenNamespaceLabelsRegexpAnnotation]; ok {
 		return true
 	}
+
 	return false
 }
 
@@ -24,9 +26,11 @@ func (t *Tenant) hasForbiddenNamespaceAnnotationsAnnotations() bool {
 	if _, ok := t.Annotations[ForbiddenNamespaceAnnotationsAnnotation]; ok {
 		return true
 	}
+
 	if _, ok := t.Annotations[ForbiddenNamespaceAnnotationsRegexpAnnotation]; ok {
 		return true
 	}
+
 	return false
 }
 
@@ -34,6 +38,7 @@ func (t *Tenant) ForbiddenUserNamespaceLabels() *ForbiddenListSpec {
 	if !t.hasForbiddenNamespaceLabelsAnnotations() {
 		return nil
 	}
+
 	return &ForbiddenListSpec{
 		Exact: strings.Split(t.Annotations[ForbiddenNamespaceLabelsAnnotation], ","),
 		Regex: t.Annotations[ForbiddenNamespaceLabelsRegexpAnnotation],
@@ -44,6 +49,7 @@ func (t *Tenant) ForbiddenUserNamespaceAnnotations() *ForbiddenListSpec {
 	if !t.hasForbiddenNamespaceAnnotationsAnnotations() {
 		return nil
 	}
+
 	return &ForbiddenListSpec{
 		Exact: strings.Split(t.Annotations[ForbiddenNamespaceAnnotationsAnnotation], ","),
 		Regex: t.Annotations[ForbiddenNamespaceAnnotationsRegexpAnnotation],

api/v1beta1/owner_list.go

@@ -15,6 +15,7 @@ func (o OwnerListSpec) FindOwner(name string, kind OwnerKind) (owner OwnerSpec)
 	if i < len(o) && o[i].Kind == kind && o[i].Name == name {
 		return o[i]
 	}
+
 	return
 }
 
@@ -23,12 +24,15 @@ type ByKindAndName OwnerListSpec
 func (b ByKindAndName) Len() int {
 	return len(b)
 }
+
 func (b ByKindAndName) Less(i, j int) bool {
 	if b[i].Kind.String() != b[j].Kind.String() {
 		return b[i].Kind.String() < b[j].Kind.String()
 	}
+
 	return b[i].Name < b[j].Name
 }
+
 func (b ByKindAndName) Swap(i, j int) {
 	b[i], b[j] = b[j], b[i]
 }

api/v1beta1/owner_list_test.go

@@ -7,7 +7,7 @@ import (
 )
 
 func TestOwnerListSpec_FindOwner(t *testing.T) {
-	var bla = OwnerSpec{
+	bla := OwnerSpec{
 		Kind: UserOwner,
 		Name: "bla",
 		ProxyOperations: []ProxySettings{
@@ -17,7 +17,7 @@ func TestOwnerListSpec_FindOwner(t *testing.T) {
 			},
 		},
 	}
-	var bar = OwnerSpec{
+	bar := OwnerSpec{
 		Kind: GroupOwner,
 		Name: "bar",
 		ProxyOperations: []ProxySettings{
@@ -27,7 +27,7 @@ func TestOwnerListSpec_FindOwner(t *testing.T) {
 			},
 		},
 	}
-	var baz = OwnerSpec{
+	baz := OwnerSpec{
 		Kind: UserOwner,
 		Name: "baz",
 		ProxyOperations: []ProxySettings{
@@ -37,7 +37,7 @@ func TestOwnerListSpec_FindOwner(t *testing.T) {
 			},
 		},
 	}
-	var fim = OwnerSpec{
+	fim := OwnerSpec{
 		Kind: ServiceAccountOwner,
 		Name: "fim",
 		ProxyOperations: []ProxySettings{
@@ -47,7 +47,7 @@ func TestOwnerListSpec_FindOwner(t *testing.T) {
 			},
 		},
 	}
-	var bom = OwnerSpec{
+	bom := OwnerSpec{
 		Kind: GroupOwner,
 		Name: "bom",
 		ProxyOperations: []ProxySettings{
@@ -61,7 +61,7 @@ func TestOwnerListSpec_FindOwner(t *testing.T) {
 			},
 		},
 	}
-	var qip = OwnerSpec{
+	qip := OwnerSpec{
 		Kind: ServiceAccountOwner,
 		Name: "qip",
 		ProxyOperations: []ProxySettings{
@@ -71,7 +71,7 @@ func TestOwnerListSpec_FindOwner(t *testing.T) {
 			},
 		},
 	}
-	var owners = OwnerListSpec{bom, qip, bla, bar, baz, fim}
+	owners := OwnerListSpec{bom, qip, bla, bar, baz, fim}
 
 	assert.Equal(t, owners.FindOwner("bom", GroupOwner), bom)
 	assert.Equal(t, owners.FindOwner("qip", ServiceAccountOwner), qip)

api/v1beta1/owner_role.go

@@ -0,0 +1,74 @@
+// Copyright 2020-2021 Clastix Labs
+// SPDX-License-Identifier: Apache-2.0
+
+package v1beta1
+
+import (
+	"fmt"
+	"strings"
+)
+
+const (
+	ClusterRoleNamesAnnotation = "clusterrolenames.capsule.clastix.io"
+)
+
+// GetRoles read the annotation available in the Tenant specification and if it matches the pattern
+// clusterrolenames.capsule.clastix.io/${KIND}.${NAME} returns the associated roles.
+// Kubernetes annotations and labels must respect RFC 1123 about DNS names and this could be cumbersome in two cases:
+// 1. identifying users based on their email address
+// 2. the overall length of the annotation key that is exceeding 63 characters
+// For emails, the symbol @ can be replaced with the placeholder __AT__.
+// For the latter one, the index of the owner can be used to force the retrieval.
+func (in OwnerSpec) GetRoles(tenant Tenant, index int) []string {
+	for key, value := range tenant.GetAnnotations() {
+		if !strings.HasPrefix(key, fmt.Sprintf("%s/", ClusterRoleNamesAnnotation)) {
+			continue
+		}
+
+		for symbol, replace := range in.convertMap() {
+			key = strings.ReplaceAll(key, symbol, replace)
+		}
+
+		nameBased := key == fmt.Sprintf("%s/%s.%s", ClusterRoleNamesAnnotation, strings.ToLower(in.Kind.String()), strings.ToLower(in.Name))
+
+		indexBased := key == fmt.Sprintf("%s/%d", ClusterRoleNamesAnnotation, index)
+
+		if nameBased || indexBased {
+			return strings.Split(value, ",")
+		}
+	}
+
+	roles := []string{"admin", "capsule-namespace-deleter"}
+
+	if tenant.Spec.GitOpsReady {
+		roles = append(roles, in.getGitOpsRoles(tenant)...)
+	}
+
+	return roles
+}
+
+func (in OwnerSpec) GetClusterRoles(tenant Tenant) []string {
+	if tenant.Spec.GitOpsReady {
+		return in.getGitOpsClusterRoles(tenant)
+	}
+
+	return []string{}
+}
+
+func (in OwnerSpec) getGitOpsClusterRoles(tenant Tenant) []string {
+	return []string{
+		"capsule-tenant-impersonator-" + tenant.Name + "-" + in.Name,
+	}
+}
+
+func (in OwnerSpec) getGitOpsRoles(tenant Tenant) []string {
+	return []string{
+		"cluster-admin",
+	}
+}
+
+func (in OwnerSpec) convertMap() map[string]string {
+	return map[string]string{
+		"__AT__": "@",
+	}
+}

api/v1beta1/tenant_annotations.go

@@ -5,6 +5,7 @@ package v1beta1
 
 import (
 	"fmt"
+	"strings"
 )
 
 const (
@@ -18,12 +19,13 @@ const (
 	ForbiddenNamespaceLabelsRegexpAnnotation      = "capsule.clastix.io/forbidden-namespace-labels-regexp"
 	ForbiddenNamespaceAnnotationsAnnotation       = "capsule.clastix.io/forbidden-namespace-annotations"
 	ForbiddenNamespaceAnnotationsRegexpAnnotation = "capsule.clastix.io/forbidden-namespace-annotations-regexp"
+	ProtectedTenantAnnotation                     = "capsule.clastix.io/protected"
 )
 
 func UsedQuotaFor(resource fmt.Stringer) string {
-	return "quota.capsule.clastix.io/used-" + resource.String()
+	return "quota.capsule.clastix.io/used-" + strings.ReplaceAll(resource.String(), "/", "_")
 }
 
 func HardQuotaFor(resource fmt.Stringer) string {
-	return "quota.capsule.clastix.io/hard-" + resource.String()
+	return "quota.capsule.clastix.io/hard-" + strings.ReplaceAll(resource.String(), "/", "_")
 }

api/v1beta1/tenant_func.go

@@ -13,6 +13,7 @@ func (t *Tenant) IsCordoned() bool {
 	if v, ok := t.Labels["capsule.clastix.io/cordon"]; ok && v == "enabled" {
 		return true
 	}
+
 	return false
 }
 
@@ -21,16 +22,19 @@ func (t *Tenant) IsFull() bool {
 	if t.Spec.NamespaceOptions == nil || t.Spec.NamespaceOptions.Quota == nil {
 		return false
 	}
+
 	return len(t.Status.Namespaces) >= int(*t.Spec.NamespaceOptions.Quota)
 }
 
 func (t *Tenant) AssignNamespaces(namespaces []corev1.Namespace) {
 	var l []string
+
 	for _, ns := range namespaces {
 		if ns.Status.Phase == corev1.NamespaceActive {
 			l = append(l, ns.GetName())
 		}
 	}
+
 	sort.Strings(l)
 
 	t.Status.Namespaces = l

api/v1beta1/tenant_labels.go

@@ -24,8 +24,11 @@ func GetTypeLabel(t runtime.Object) (label string, err error) {
 		return "capsule.clastix.io/resource-quota", nil
 	case *rbacv1.RoleBinding:
 		return "capsule.clastix.io/role-binding", nil
+	case *rbacv1.ClusterRoleBinding:
+		return "capsule.clastix.io/cluster-role-binding", nil
 	default:
 		err = fmt.Errorf("type %T is not mapped as Capsule label recognized", v)
 	}
+
 	return
 }

api/v1beta1/tenant_status.go

@@ -11,7 +11,7 @@ const (
 	TenantStateCordoned tenantState = "Cordoned"
 )
 
-// Returns the observed state of the Tenant
+// Returns the observed state of the Tenant.
 type TenantStatus struct {
 	//+kubebuilder:default=Active
 	// The operational state of the Tenant. Possible values are "Active", "Cordoned".

api/v1beta1/tenant_types.go

@@ -7,7 +7,7 @@ import (
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 )
 
-// TenantSpec defines the desired state of Tenant
+// TenantSpec defines the desired state of Tenant.
 type TenantSpec struct {
 	// Specifies the owners of the Tenant. Mandatory.
 	Owners OwnerListSpec `json:"owners"`
@@ -21,20 +21,22 @@ type TenantSpec struct {
 	IngressOptions IngressOptions `json:"ingressOptions,omitempty"`
 	// Specifies the trusted Image Registries assigned to the Tenant. Capsule assures that all Pods resources created in the Tenant can use only one of the allowed trusted registries. Optional.
 	ContainerRegistries *AllowedListSpec `json:"containerRegistries,omitempty"`
-	// Specifies the label to control the placement of pods on a given pool of worker nodes. All namesapces created within the Tenant will have the node selector annotation. This annotation tells the Kubernetes scheduler to place pods on the nodes having the selector label. Optional.
+	// Specifies the label to control the placement of pods on a given pool of worker nodes. All namespaces created within the Tenant will have the node selector annotation. This annotation tells the Kubernetes scheduler to place pods on the nodes having the selector label. Optional.
 	NodeSelector map[string]string `json:"nodeSelector,omitempty"`
 	// Specifies the NetworkPolicies assigned to the Tenant. The assigned NetworkPolicies are inherited by any namespace created in the Tenant. Optional.
-	NetworkPolicies *NetworkPolicySpec `json:"networkPolicies,omitempty"`
-	// Specifies the NetworkPolicies assigned to the Tenant. The assigned NetworkPolicies are inherited by any namespace created in the Tenant. Optional.
-	LimitRanges *LimitRangesSpec `json:"limitRanges,omitempty"`
+	NetworkPolicies NetworkPolicySpec `json:"networkPolicies,omitempty"`
+	// Specifies the resource min/max usage restrictions to the Tenant. The assigned values are inherited by any namespace created in the Tenant. Optional.
+	LimitRanges LimitRangesSpec `json:"limitRanges,omitempty"`
 	// Specifies a list of ResourceQuota resources assigned to the Tenant. The assigned values are inherited by any namespace created in the Tenant. The Capsule operator aggregates ResourceQuota at Tenant level, so that the hard quota is never crossed for the given Tenant. This permits the Tenant owner to consume resources in the Tenant regardless of the namespace. Optional.
-	ResourceQuota *ResourceQuotaSpec `json:"resourceQuotas,omitempty"`
+	ResourceQuota ResourceQuotaSpec `json:"resourceQuotas,omitempty"`
 	// Specifies additional RoleBindings assigned to the Tenant. Capsule will ensure that all namespaces in the Tenant always contain the RoleBinding for the given ClusterRole. Optional.
 	AdditionalRoleBindings []AdditionalRoleBindingsSpec `json:"additionalRoleBindings,omitempty"`
 	// Specify the allowed values for the imagePullPolicies option in Pod resources. Capsule assures that all Pod resources created in the Tenant can use only one of the allowed policy. Optional.
 	ImagePullPolicies []ImagePullPolicySpec `json:"imagePullPolicies,omitempty"`
 	// Specifies the allowed priorityClasses assigned to the Tenant. Capsule assures that all Pods resources created in the Tenant can use only one of the allowed PriorityClasses. Optional.
 	PriorityClasses *AllowedListSpec `json:"priorityClasses,omitempty"`
+	// Configured RBAC for machine owners tailored for GitOps controllers.
+	GitOpsReady bool `json:"gitOpsReady,omitempty"`
 }
 
 //+kubebuilder:object:root=true
@@ -47,7 +49,7 @@ type TenantSpec struct {
 // +kubebuilder:printcolumn:name="Node selector",type="string",JSONPath=".spec.nodeSelector",description="Node Selector applied to Pods"
 // +kubebuilder:printcolumn:name="Age",type="date",JSONPath=".metadata.creationTimestamp",description="Age"
 
-// Tenant is the Schema for the tenants API
+// Tenant is the Schema for the tenants API.
 type Tenant struct {
 	metav1.TypeMeta   `json:",inline"`
 	metav1.ObjectMeta `json:"metadata,omitempty"`
@@ -60,7 +62,7 @@ func (t *Tenant) Hub() {}
 
 //+kubebuilder:object:root=true
 
-// TenantList contains a list of Tenant
+// TenantList contains a list of Tenant.
 type TenantList struct {
 	metav1.TypeMeta `json:",inline"`
 	metav1.ListMeta `json:"metadata,omitempty"`

api/v1beta1/zz_generated.deepcopy.go

@@ -1,3 +1,4 @@
+//go:build !ignore_autogenerated
 // +build !ignore_autogenerated
 
 // Copyright 2020-2021 Clastix Labs
@@ -268,6 +269,21 @@ func (in *NetworkPolicySpec) DeepCopy() *NetworkPolicySpec {
 	return out
 }
 
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *NonLimitedResourceError) DeepCopyInto(out *NonLimitedResourceError) {
+	*out = *in
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new NonLimitedResourceError.
+func (in *NonLimitedResourceError) DeepCopy() *NonLimitedResourceError {
+	if in == nil {
+		return nil
+	}
+	out := new(NonLimitedResourceError)
+	in.DeepCopyInto(out)
+	return out
+}
+
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in OwnerListSpec) DeepCopyInto(out *OwnerListSpec) {
 	{
@@ -480,21 +496,9 @@ func (in *TenantSpec) DeepCopyInto(out *TenantSpec) {
 			(*out)[key] = val
 		}
 	}
-	if in.NetworkPolicies != nil {
-		in, out := &in.NetworkPolicies, &out.NetworkPolicies
-		*out = new(NetworkPolicySpec)
-		(*in).DeepCopyInto(*out)
-	}
-	if in.LimitRanges != nil {
-		in, out := &in.LimitRanges, &out.LimitRanges
-		*out = new(LimitRangesSpec)
-		(*in).DeepCopyInto(*out)
-	}
-	if in.ResourceQuota != nil {
-		in, out := &in.ResourceQuota, &out.ResourceQuota
-		*out = new(ResourceQuotaSpec)
-		(*in).DeepCopyInto(*out)
-	}
+	in.NetworkPolicies.DeepCopyInto(&out.NetworkPolicies)
+	in.LimitRanges.DeepCopyInto(&out.LimitRanges)
+	in.ResourceQuota.DeepCopyInto(&out.ResourceQuota)
 	if in.AdditionalRoleBindings != nil {
 		in, out := &in.AdditionalRoleBindings, &out.AdditionalRoleBindings
 		*out = make([]AdditionalRoleBindingsSpec, len(*in))

charts/capsule/.helmignore

@@ -21,3 +21,4 @@
 .idea/
 *.tmproj
 .vscode/
+README.md.gotmpl

charts/capsule/Chart.yaml

@@ -21,8 +21,8 @@ sources:
 
 # This is the chart version. This version number should be incremented each time you make changes
 # to the chart and its templates, including the app version.
-version: 0.1.2
+version: 0.1.11
 
 # This is the version number of the application being deployed.
 # This version number should be incremented each time you make changes to the application.
-appVersion: 0.1.0
+appVersion: 0.1.2

charts/capsule/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/capsule/README.md

@@ -24,23 +24,19 @@ The Capsule Operator Chart can be used to instantly deploy the Capsule Operator
 
         $ helm repo add clastix https://clastix.github.io/charts
 
-2. Create the Namespace:
+2. Install the Chart:
 
-        $ kubectl create namespace capsule-system
+        $ helm install capsule clastix/capsule -n capsule-system --create-namespace
 
-3. Install the Chart:
-
-        $ helm install capsule clastix/capsule -n capsule-system
-
-4. Show the status:
+3. Show the status:
 
         $ helm status capsule -n capsule-system
 
-5. Upgrade the Chart
+4. Upgrade the Chart
 
         $ helm upgrade capsule clastix/capsule -n capsule-system
 
-6. Uninstall the Chart
+5. Uninstall the Chart
 
         $ helm uninstall capsule -n capsule-system
 
@@ -58,47 +54,101 @@ The values in your overrides file `myvalues.yaml` will override their counterpar
 
 If you only need to make minor customizations, you can specify them on the command line by using the `--set` option. For example:
 
-        $ helm install capsule capsule-helm-chart --set force_tenant_prefix=false -n capsule-system
+        $ helm install capsule capsule-helm-chart --set manager.options.forceTenantPrefix=false -n capsule-system
 
 Here the values you can override:
 
-Parameter | Description | Default
---- | --- | ---
-`manager.hostNetwork` | Specifies if the container should be started in `hostNetwork` mode. | `false` 
-`manager.options.logLevel` | Set the log verbosity of the controller with a value from 1 to 10.| `4`
-`manager.options.forceTenantPrefix` | Boolean, enforces the Tenant owner, during Namespace creation, to name it using the selected Tenant name as prefix, separated by a dash | `false`
-`manager.options.capsuleUserGroups` | Override the Capsule user groups | `[capsule.clastix.io]`
-`manager.options.protectedNamespaceRegex` | If specified, disallows creation of namespaces matching the passed regexp | `null`
-`manager.image.repository` | Set the image repository of the controller. | `quay.io/clastix/capsule`
-`manager.image.tag` | Overrides the image tag whose default is the chart. `appVersion` | `null`
-`manager.image.pullPolicy` | Set the image pull policy. | `IfNotPresent`
-`manager.livenessProbe` | Configure the liveness probe using Deployment probe spec | `GET :10080/healthz`
-`manager.readinessProbe` | Configure the readiness probe using Deployment probe spec | `GET :10080/readyz`
-`manager.resources.requests/cpu` | Set the CPU requests assigned to the controller. | `200m`
-`manager.resources.requests/memory` | Set the memory requests assigned to the controller. | `128Mi`
-`manager.resources.limits/cpu` | Set the CPU limits assigned to the controller. | `200m`
-`manager.resources.limits/cpu` | Set the memory limits assigned to the controller. | `128Mi`
-`mutatingWebhooksTimeoutSeconds` | Timeout in seconds for mutating webhooks. | `30`
-`validatingWebhooksTimeoutSeconds` | Timeout in seconds for validating webhooks. | `30`
-`imagePullSecrets` | Configuration for `imagePullSecrets` so that you can use a private images registry. | `[]`
-`serviceAccount.create` | Specifies whether a service account should be created. | `true`
-`serviceAccount.annotations` | Annotations to add to the service account. | `{}`
-`serviceAccount.name` | The name of the service account to use. If not set and `serviceAccount.create=true`, a name is generated using the fullname template | `capsule`
-`podAnnotations` | Annotations to add to the Capsule pod. | `{}`
-`priorityClassName` | Set the priority class name of the Capsule pod. | `null`
-`nodeSelector` | Set the node selector for the Capsule pod. | `{}`
-`tolerations` | Set list of tolerations for the Capsule pod. | `[]`
-`replicaCount` | Set the replica count for Capsule pod. | `1`
-`affinity` | Set affinity rules for the Capsule pod. | `{}`
-`podSecurityPolicy.enabled` | Specify if a Pod Security Policy must be created. | `false`
-`serviceMonitor.enabled` | Specifies if a service monitor must be created. | `false`
-`serviceMonitor.labels` | Additional labels which will be added to service monitor. | `{}`
-`serviceMonitor.annotations` | Additional annotations which will be added to service monitor. | `{}`
-`serviceMonitor.matchLabels` | Additional matchLabels which will be added to service monitor. | `{}`
-`serviceMonitor.serviceAccount.name` | Specifies service account name for metrics scrape. | `capsule`
-`serviceMonitor.serviceAccount.namespace` | Specifies service account namespace for metrics scrape. | `capsule-system`
-`customLabels` | Additional labels which will be added to all resources created by Capsule helm chart . | `{}`
-`customAnnotations` | Additional annotations which will be added to all resources created by Capsule helm chart . | `{}`
+### General Parameters
+
+| Key | Type | Default | Description |
+|-----|------|---------|-------------|
+| affinity | object | `{}` | Set affinity rules for the Capsule pod |
+| certManager.generateCertificates | bool | `false` | Specifies whether capsule webhooks certificates should be generated using cert-manager |
+| customAnnotations | object | `{}` | Additional annotations which will be added to all resources created by Capsule helm chart  |
+| customLabels | object | `{}` | Additional labels which will be added to all resources created by Capsule helm chart  |
+| jobs.image.pullPolicy | string | `"IfNotPresent"` | Set the image pull policy of the helm chart job |
+| jobs.image.repository | string | `"quay.io/clastix/kubectl"` | Set the image repository of the helm chart job |
+| jobs.image.tag | string | `""` | Set the image tag of the helm chart job |
+| mutatingWebhooksTimeoutSeconds | int | `30` | Timeout in seconds for mutating webhooks |
+| nodeSelector | object | `{}` | Set the node selector for the Capsule pod |
+| podAnnotations | object | `{}` | Annotations to add to the capsule pod. |
+| podSecurityPolicy.enabled | bool | `false` | Specify if a Pod Security Policy must be created |
+| priorityClassName | string | `""` | Set the priority class name of the Capsule pod |
+| replicaCount | int | `1` | Set the replica count for capsule pod |
+| serviceAccount.annotations | object | `{}` | Annotations to add to the service account. |
+| serviceAccount.create | bool | `true` | Specifies whether a service account should be created. |
+| serviceAccount.name | string | `"capsule"` | The name of the service account to use. If not set and `serviceAccount.create=true`, a name is generated using the fullname template |
+| tls.create | bool | `true` | When cert-manager is disabled, Capsule will generate the TLS certificate for webhook and CRDs conversion. |
+| tls.enableController | bool | `true` | Start the Capsule controller that injects the CA into mutating and validating webhooks, and CRD as well. |
+| tls.name | string | `""` | Override name of the Capsule TLS Secret name when externally managed. |
+| tolerations | list | `[]` | Set list of tolerations for the Capsule pod |
+| validatingWebhooksTimeoutSeconds | int | `30` | Timeout in seconds for validating webhooks |
+
+### Manager Parameters
+
+| Key | Type | Default | Description |
+|-----|------|---------|-------------|
+| manager.hostNetwork | bool | `false` | Specifies if the container should be started in hostNetwork mode. Required for use in some managed kubernetes clusters (such as AWS EKS) with custom CNI (such as calico), because control-plane managed by AWS cannot communicate with pods' IP CIDR and admission webhooks are not working |
+| manager.image.pullPolicy | string | `"IfNotPresent"` | Set the image pull policy. |
+| manager.image.repository | string | `"clastix/capsule"` | Set the image repository of the capsule. |
+| manager.image.tag | string | `""` | Overrides the image tag whose default is the chart appVersion. |
+| manager.imagePullSecrets | list | `[]` | Configuration for `imagePullSecrets` so that you can use a private images registry.   |
+| manager.kind | string | `"Deployment"` | Set the controller deployment mode as `Deployment` or `DaemonSet`.  |
+| manager.livenessProbe | object | `{"httpGet":{"path":"/healthz","port":10080}}` | Configure the liveness probe using Deployment probe spec    |
+| manager.options.capsuleUserGroups | list | `["capsule.clastix.io"]` | Override the Capsule user groups   |
+| manager.options.forceTenantPrefix | bool | `false` | Boolean, enforces the Tenant owner, during Namespace creation, to name it using the selected Tenant name as prefix, separated by a dash |
+| manager.options.generateCertificates | bool | `true` | Specifies whether capsule webhooks certificates should be generated by capsule operator |
+| manager.options.logLevel | string | `"4"` | Set the log verbosity of the capsule with a value from 1 to 10 |
+| manager.options.protectedNamespaceRegex | string | `""` | If specified, disallows creation of namespaces matching the passed regexp    |
+| manager.readinessProbe | object | `{"httpGet":{"path":"/readyz","port":10080}}` | Configure the readiness probe using Deployment probe spec |
+| manager.resources.limits.cpu | string | `"200m"` |  |
+| manager.resources.limits.memory | string | `"128Mi"` |  |
+| manager.resources.requests.cpu | string | `"200m"` |  |
+| manager.resources.requests.memory | string | `"128Mi"` |  |
+
+### ServiceMonitor Parameters
+
+| Key | Type | Default | Description |
+|-----|------|---------|-------------|
+| serviceMonitor.annotations | object | `{}` | Assign additional Annotations |
+| serviceMonitor.enabled | bool | `false` | Enable ServiceMonitor |
+| serviceMonitor.endpoint.interval | string | `"15s"` | Set the scrape interval for the endpoint of the serviceMonitor |
+| serviceMonitor.endpoint.metricRelabelings | list | `[]` | Set metricRelabelings for the endpoint of the serviceMonitor |
+| serviceMonitor.endpoint.relabelings | list | `[]` | Set relabelings for the endpoint of the serviceMonitor |
+| serviceMonitor.endpoint.scrapeTimeout | string | `""` | Set the scrape timeout for the endpoint of the serviceMonitor |
+| serviceMonitor.labels | object | `{}` | Assign additional labels according to Prometheus' serviceMonitorSelector matching labels |
+| serviceMonitor.matchLabels | object | `{}` | Change matching labels |
+| serviceMonitor.namespace | string | `""` | Install the ServiceMonitor into a different Namespace, as the monitoring stack one (default: the release one) |
+| serviceMonitor.serviceAccount.name | string | `"capsule"` | ServiceAccount for Metrics RBAC |
+| serviceMonitor.serviceAccount.namespace | string | `"capsule-system"` | ServiceAccount Namespace for Metrics RBAC |
+| serviceMonitor.targetLabels | list | `[]` | Set targetLabels for the serviceMonitor |
+
+### Webhook Parameters
+
+| Key | Type | Default | Description |
+|-----|------|---------|-------------|
+| webhooks.cordoning.failurePolicy | string | `"Fail"` |  |
+| webhooks.cordoning.namespaceSelector.matchExpressions[0].key | string | `"capsule.clastix.io/tenant"` |  |
+| webhooks.cordoning.namespaceSelector.matchExpressions[0].operator | string | `"Exists"` |  |
+| webhooks.ingresses.failurePolicy | string | `"Fail"` |  |
+| webhooks.ingresses.namespaceSelector.matchExpressions[0].key | string | `"capsule.clastix.io/tenant"` |  |
+| webhooks.ingresses.namespaceSelector.matchExpressions[0].operator | string | `"Exists"` |  |
+| webhooks.namespaceOwnerReference.failurePolicy | string | `"Fail"` |  |
+| webhooks.namespaces.failurePolicy | string | `"Fail"` |  |
+| webhooks.networkpolicies.failurePolicy | string | `"Fail"` |  |
+| webhooks.networkpolicies.namespaceSelector.matchExpressions[0].key | string | `"capsule.clastix.io/tenant"` |  |
+| webhooks.networkpolicies.namespaceSelector.matchExpressions[0].operator | string | `"Exists"` |  |
+| webhooks.nodes.failurePolicy | string | `"Fail"` |  |
+| webhooks.persistentvolumeclaims.failurePolicy | string | `"Fail"` |  |
+| webhooks.persistentvolumeclaims.namespaceSelector.matchExpressions[0].key | string | `"capsule.clastix.io/tenant"` |  |
+| webhooks.persistentvolumeclaims.namespaceSelector.matchExpressions[0].operator | string | `"Exists"` |  |
+| webhooks.pods.failurePolicy | string | `"Fail"` |  |
+| webhooks.pods.namespaceSelector.matchExpressions[0].key | string | `"capsule.clastix.io/tenant"` |  |
+| webhooks.pods.namespaceSelector.matchExpressions[0].operator | string | `"Exists"` |  |
+| webhooks.services.failurePolicy | string | `"Fail"` |  |
+| webhooks.services.namespaceSelector.matchExpressions[0].key | string | `"capsule.clastix.io/tenant"` |  |
+| webhooks.services.namespaceSelector.matchExpressions[0].operator | string | `"Exists"` |  |
+| webhooks.tenants.failurePolicy | string | `"Fail"` |  |
 
 ## Created resources
 
@@ -110,6 +160,7 @@ This Helm Chart creates the following Kubernetes resources in the release namesp
 * CA Secret
 * Certificate Secret
 * Tenant Custom Resource Definition
+* CapsuleConfiguration Custom Resource Definition
 * MutatingWebHookConfiguration
 * ValidatingWebHookConfiguration
 * RBAC Cluster Roles
@@ -127,6 +178,34 @@ And optionally, depending on the values set:
 
 Capsule, as many other add-ons, defines its own set of Custom Resource Definitions (CRDs). Helm3 removed the old CRDs installation method for a more simple methodology. In the Helm Chart, there is now a special directory called `crds` to hold the CRDs. These CRDs are not templated, but will be installed by default when running a `helm install` for the chart. If the CRDs already exist (for example, you already executed `helm install`), it will be skipped with a warning. When you wish to skip the CRDs installation, and do not see the warning, you can pass the `--skip-crds` flag to the `helm install` command.
 
+## Cert-Manager integration
+
+You can enable the generation of certificates using `cert-manager` as follows.
+
+```
+helm upgrade --install capsule clastix/capsule --namespace capsule-system --create-namespace \
+  --set "certManager.generateCertificates=true" \
+  --set "tls.create=false" \
+  --set "tls.enableController=false"
+```
+
+With the usage of `tls.enableController=false` value, you're delegating the injection of the Validating and Mutating Webhooks' CA to `cert-manager`.
+Since Helm3 doesn't allow to template _CRDs_, you have to patch manually the Custom Resource Definition `tenants.capsule.clastix.io` adding the proper annotation (YMMV).
+
+```yaml
+apiVersion: apiextensions.k8s.io/v1
+kind: CustomResourceDefinition
+metadata:
+  annotations:
+    controller-gen.kubebuilder.io/version: v0.5.0
+    cert-manager.io/inject-ca-from: capsule-system/capsule-webhook-cert
+  creationTimestamp: "2022-07-22T08:32:51Z"
+  generation: 45
+  name: tenants.capsule.clastix.io
+  resourceVersion: "9832"
+  uid: 61e287df-319b-476d-88d5-bdb8dc14d4a6
+```
+
 ## More
 
-See Capsule [use cases](https://github.com/clastix/capsule/blob/master/use_cases.md) for more information about how to use Capsule.
+See Capsule [tutorial](https://github.com/clastix/capsule/blob/master/docs/content/general/tutorial.md) for more information about how to use Capsule.

charts/capsule/README.md.gotmpl

@@ -0,0 +1,160 @@
+# Deploying the Capsule Operator
+
+Use the Capsule Operator for easily implementing, managing, and maintaining multitenancy and access control in Kubernetes.
+
+## Requirements
+
+* [Helm 3](https://github.com/helm/helm/releases) is required when installing the Capsule Operator chart. Follow Helm’s official [steps](https://helm.sh/docs/intro/install/) for installing helm on your particular operating system.
+
+* A Kubernetes cluster 1.16+ with following [Admission Controllers](https://kubernetes.io/docs/reference/access-authn-authz/admission-controllers/) enabled:
+
+    * PodNodeSelector
+    * LimitRanger
+    * ResourceQuota
+    * MutatingAdmissionWebhook
+    * ValidatingAdmissionWebhook
+
+* A [`kubeconfig`](https://kubernetes.io/docs/concepts/configuration/organize-cluster-access-kubeconfig/) file accessing the Kubernetes cluster with cluster admin permissions.
+
+## Quick Start
+
+The Capsule Operator Chart can be used to instantly deploy the Capsule Operator on your Kubernetes cluster.
+
+1. Add this repository:
+
+        $ helm repo add clastix https://clastix.github.io/charts
+
+2. Install the Chart:
+
+        $ helm install capsule clastix/capsule -n capsule-system --create-namespace
+
+3. Show the status:
+
+        $ helm status capsule -n capsule-system
+
+4. Upgrade the Chart
+
+        $ helm upgrade capsule clastix/capsule -n capsule-system
+
+5. Uninstall the Chart
+
+        $ helm uninstall capsule -n capsule-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 install capsule capsule-helm-chart --values myvalues.yaml -n capsule-system
+
+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 install capsule capsule-helm-chart --set manager.options.forceTenantPrefix=false -n capsule-system
+
+Here the values you can override:
+
+
+### General Parameters
+
+| Key | Type | Default | Description |
+|-----|------|---------|-------------|
+{{- range .Values }}
+  {{- if not (or (hasPrefix "manager" .Key) (hasPrefix "serviceMonitor" .Key) (hasPrefix "webhook" .Key) (hasPrefix "capsule-proxy" .Key) )  }}
+| {{ .Key }} | {{ .Type }} | {{ if .Default }}{{ .Default }}{{ else }}{{ .AutoDefault }}{{ end }} | {{ if .Description }}{{ .Description }}{{ else }}{{ .AutoDescription }}{{ end }} |
+  {{- end }}
+{{- end }}
+
+### Manager Parameters
+
+| Key | Type | Default | Description |
+|-----|------|---------|-------------|
+{{- range .Values }}
+  {{- if hasPrefix "manager" .Key }}
+| {{ .Key }} | {{ .Type }} | {{ if .Default }}{{ .Default }}{{ else }}{{ .AutoDefault }}{{ end }} | {{ if .Description }}{{ .Description }}{{ else }}{{ .AutoDescription }}{{ end }} |
+  {{- end }}
+{{- end }}
+
+### ServiceMonitor Parameters
+
+| Key | Type | Default | Description |
+|-----|------|---------|-------------|
+{{- range .Values }}
+  {{- if hasPrefix "serviceMonitor" .Key }}
+| {{ .Key }} | {{ .Type }} | {{ if .Default }}{{ .Default }}{{ else }}{{ .AutoDefault }}{{ end }} | {{ if .Description }}{{ .Description }}{{ else }}{{ .AutoDescription }}{{ end }} |
+  {{- end }}
+{{- end }}
+
+### Webhook Parameters
+
+| Key | Type | Default | Description |
+|-----|------|---------|-------------|
+{{- range .Values }}
+  {{- if hasPrefix "webhook" .Key }}
+| {{ .Key }} | {{ .Type }} | {{ if .Default }}{{ .Default }}{{ else }}{{ .AutoDefault }}{{ end }} | {{ if .Description }}{{ .Description }}{{ else }}{{ .AutoDescription }}{{ end }} |
+  {{- end }}
+{{- end }}
+
+## Created resources
+
+This Helm Chart creates the following Kubernetes resources in the release namespace:
+
+* Capsule Namespace
+* Capsule Operator Deployment
+* Capsule Service
+* CA Secret
+* Certificate Secret
+* Tenant Custom Resource Definition
+* CapsuleConfiguration Custom Resource Definition
+* MutatingWebHookConfiguration
+* ValidatingWebHookConfiguration
+* RBAC Cluster Roles
+* Metrics Service
+
+And optionally, depending on the values set:
+
+* Capsule ServiceAccount
+* Capsule Service Monitor
+* PodSecurityPolicy
+* RBAC ClusterRole and RoleBinding for pod security policy
+* RBAC Role and Rolebinding for metrics scrape
+
+## Notes on installing Custom Resource Definitions with Helm3
+
+Capsule, as many other add-ons, defines its own set of Custom Resource Definitions (CRDs). Helm3 removed the old CRDs installation method for a more simple methodology. In the Helm Chart, there is now a special directory called `crds` to hold the CRDs. These CRDs are not templated, but will be installed by default when running a `helm install` for the chart. If the CRDs already exist (for example, you already executed `helm install`), it will be skipped with a warning. When you wish to skip the CRDs installation, and do not see the warning, you can pass the `--skip-crds` flag to the `helm install` command.
+
+## Cert-Manager integration
+
+You can enable the generation of certificates using `cert-manager` as follows.
+
+```
+helm upgrade --install capsule clastix/capsule --namespace capsule-system --create-namespace \
+  --set "certManager.generateCertificates=true" \
+  --set "tls.create=false" \
+  --set "tls.enableController=false"
+```
+
+With the usage of `tls.enableController=false` value, you're delegating the injection of the Validating and Mutating Webhooks' CA to `cert-manager`.
+Since Helm3 doesn't allow to template _CRDs_, you have to patch manually the Custom Resource Definition `tenants.capsule.clastix.io` adding the proper annotation (YMMV).
+
+```yaml
+apiVersion: apiextensions.k8s.io/v1
+kind: CustomResourceDefinition
+metadata:
+  annotations:
+    controller-gen.kubebuilder.io/version: v0.5.0
+    cert-manager.io/inject-ca-from: capsule-system/capsule-webhook-cert
+  creationTimestamp: "2022-07-22T08:32:51Z"
+  generation: 45
+  name: tenants.capsule.clastix.io
+  resourceVersion: "9832"
+  uid: 61e287df-319b-476d-88d5-bdb8dc14d4a6
+```
+
+## More
+
+See Capsule [tutorial](https://github.com/clastix/capsule/blob/master/docs/content/general/tutorial.md) for more information about how to use Capsule.

charts/capsule/crds/capsuleconfiguration-crd.yaml

@@ -17,7 +17,7 @@ spec:
     - name: v1alpha1
       schema:
         openAPIV3Schema:
-          description: CapsuleConfiguration is the Schema for the Capsule configuration API
+          description: CapsuleConfiguration is the Schema for the Capsule configuration 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'
@@ -28,7 +28,7 @@ spec:
             metadata:
               type: object
             spec:
-              description: CapsuleConfigurationSpec defines the Capsule configuration
+              description: CapsuleConfigurationSpec defines the Capsule configuration.
               properties:
                 forceTenantPrefix:
                   default: false

charts/capsule/crds/tenant-crd.yaml

@@ -7,7 +7,17 @@ metadata:
   name: tenants.capsule.clastix.io
 spec:
   conversion:
-    strategy: None
+    strategy: Webhook
+    webhook:
+      clientConfig:
+        service:
+          name: capsule-webhook-service
+          namespace: capsule-system
+          path: /convert
+          port: 443
+      conversionReviewVersions:
+        - v1alpha1
+        - v1beta1
   group: capsule.clastix.io
   names:
     kind: Tenant
@@ -46,7 +56,7 @@ spec:
       name: v1alpha1
       schema:
         openAPIV3Schema:
-          description: Tenant is the Schema for the tenants API
+          description: Tenant is the Schema for the tenants 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'
@@ -57,7 +67,7 @@ spec:
             metadata:
               type: object
             spec:
-              description: TenantSpec defines the desired state of Tenant
+              description: TenantSpec defines the desired state of Tenant.
               properties:
                 additionalRoleBindings:
                   items:
@@ -475,7 +485,7 @@ spec:
                     type: string
                   type: object
                 owner:
-                  description: OwnerSpec defines tenant owner name and kind
+                  description: OwnerSpec defines tenant owner name and kind.
                   properties:
                     kind:
                       enum:
@@ -558,7 +568,7 @@ spec:
                 - owner
               type: object
             status:
-              description: TenantStatus defines the observed state of Tenant
+              description: TenantStatus defines the observed state of Tenant.
               properties:
                 namespaces:
                   items:
@@ -598,7 +608,7 @@ spec:
       name: v1beta1
       schema:
         openAPIV3Schema:
-          description: Tenant is the Schema for the tenants API
+          description: Tenant is the Schema for the tenants 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'
@@ -609,7 +619,7 @@ spec:
             metadata:
               type: object
             spec:
-              description: TenantSpec defines the desired state of Tenant
+              description: TenantSpec defines the desired state of Tenant.
               properties:
                 additionalRoleBindings:
                   description: Specifies additional RoleBindings assigned to the Tenant. Capsule will ensure that all namespaces in the Tenant always contain the RoleBinding for the given ClusterRole. Optional.
@@ -697,7 +707,7 @@ spec:
                       type: string
                   type: object
                 limitRanges:
-                  description: Specifies the NetworkPolicies assigned to the Tenant. The assigned NetworkPolicies are inherited by any namespace created in the Tenant. Optional.
+                  description: Specifies the resource min/max usage restrictions to the Tenant. The assigned values are inherited by any namespace created in the Tenant. Optional.
                   properties:
                     items:
                       items:
@@ -1055,7 +1065,7 @@ spec:
                 nodeSelector:
                   additionalProperties:
                     type: string
-                  description: Specifies the label to control the placement of pods on a given pool of worker nodes. All namesapces created within the Tenant will have the node selector annotation. This annotation tells the Kubernetes scheduler to place pods on the nodes having the selector label. Optional.
+                  description: Specifies the label to control the placement of pods on a given pool of worker nodes. All namespaces created within the Tenant will have the node selector annotation. This annotation tells the Kubernetes scheduler to place pods on the nodes having the selector label. Optional.
                   type: object
                 owners:
                   description: Specifies the owners of the Tenant. Mandatory.
@@ -1224,7 +1234,7 @@ spec:
                 - owners
               type: object
             status:
-              description: Returns the observed state of the Tenant
+              description: Returns the observed state of the Tenant.
               properties:
                 namespaces:
                   description: List of namespaces assigned to the Tenant.

charts/capsule/templates/NOTES.txt

@@ -5,7 +5,7 @@
 
 
    # Check the capsule logs
-   $ kubectl logs -f deployment/{{ template "capsule.fullname" . }}-controller-manager -c manager -n{{ .Release.Namespace }}
+   $ kubectl logs -f deployment/{{ template "capsule.fullname" . }}-controller-manager -c manager -n {{ .Release.Namespace }}
 
 - Manage this chart:
 

charts/capsule/templates/_helpers.tpl

@@ -65,7 +65,6 @@ ServiceAccount annotations
 {{- end }}
 {{- end }}
 
-
 {{/*
 Create the name of the service account to use
 */}}
@@ -91,30 +90,38 @@ Create the proxy fully-qualified Docker image to use
 {{- printf "%s:%s" .Values.proxy.image.repository .Values.proxy.image.tag -}}
 {{- end }}
 
+{{/*
+Determine the Kubernetes version to use for jobsFullyQualifiedDockerImage tag
+*/}}
+{{- define "capsule.jobsTagKubeVersion" -}}
+{{- if contains "-eks-" .Capabilities.KubeVersion.GitVersion }}
+{{- print "v" .Capabilities.KubeVersion.Major "." (.Capabilities.KubeVersion.Minor | replace "+" "") -}}
+{{- else }}
+{{- print "v" .Capabilities.KubeVersion.Major "." .Capabilities.KubeVersion.Minor -}}
+{{- end }}
+{{- end }}
+
 {{/*
 Create the jobs fully-qualified Docker image to use
 */}}
 {{- define "capsule.jobsFullyQualifiedDockerImage" -}}
+{{- if .Values.jobs.image.tag }}
 {{- printf "%s:%s" .Values.jobs.image.repository .Values.jobs.image.tag -}}
+{{- else }}
+{{- printf "%s:%s" .Values.jobs.image.repository (include "capsule.jobsTagKubeVersion" .) -}}
+{{- end }}
 {{- end }}
 
 {{/*
-Create the Capsule Deployment name to use
+Create the Capsule controller name to use
 */}}
-{{- define "capsule.deploymentName" -}}
+{{- define "capsule.controllerName" -}}
 {{- printf "%s-controller-manager" (include "capsule.fullname" .) -}}
 {{- end }}
 
-{{/*
-Create the Capsule CA Secret name to use
-*/}}
-{{- define "capsule.secretCaName" -}}
-{{- printf "%s-ca" (include "capsule.fullname" .) -}}
-{{- end }}
-
 {{/*
 Create the Capsule TLS Secret name to use
 */}}
 {{- define "capsule.secretTlsName" -}}
-{{- printf "%s-tls" (include "capsule.fullname" .) -}}
+{{ default ( printf "%s-tls" ( include "capsule.fullname" . ) ) .Values.tls.name }}
 {{- end }}

charts/capsule/templates/ca.yaml

@@ -1,11 +0,0 @@
-apiVersion: v1
-kind: Secret
-metadata:
-  labels:
-    {{- include "capsule.labels" . | nindent 4 }}
-  {{- with .Values.customAnnotations }}
-  annotations:
-    {{- toYaml . | nindent 4 }}
-  {{- end }}
-  name: {{ include "capsule.secretCaName" . }}
-data:

charts/capsule/templates/certificate.yaml

@@ -0,0 +1,36 @@
+{{- if .Values.certManager.generateCertificates }}
+apiVersion: cert-manager.io/v1
+kind: Issuer
+metadata:
+  name: {{ include "capsule.fullname" . }}-webhook-selfsigned
+  labels:
+    {{- include "capsule.labels" . | nindent 4 }}
+  {{- with .Values.customAnnotations }}
+  annotations:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+spec:
+  selfSigned: {}
+---
+apiVersion: cert-manager.io/v1
+kind: Certificate
+metadata:
+  name: {{ include "capsule.fullname" . }}-webhook-cert
+  labels:
+    {{- include "capsule.labels" . | nindent 4 }}
+  {{- with .Values.customAnnotations }}
+  annotations:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+spec:
+  dnsNames:
+  - {{ include "capsule.fullname" . }}-webhook-service.{{ .Release.Namespace }}.svc
+  - {{ include "capsule.fullname" . }}-webhook-service.{{ .Release.Namespace }}.svc.cluster.local
+  issuerRef:
+    kind: Issuer
+    name: {{ include "capsule.fullname" . }}-webhook-selfsigned
+  secretName: {{ include "capsule.secretTlsName" . }}
+  subject:
+    organizations:
+      - clastix.io
+{{- end }}

charts/capsule/templates/certs.yaml

@@ -1,3 +1,4 @@
+{{- if or (not .Values.certManager.generateCertificates) (.Values.tls.create) }}
 apiVersion: v1
 kind: Secret
 metadata:
@@ -8,4 +9,4 @@ metadata:
     {{- toYaml . | nindent 4 }}
   {{- end }}
   name: {{ include "capsule.secretTlsName" . }}
-data:
+{{- end }}

charts/capsule/templates/configuration-default.yaml

@@ -4,8 +4,12 @@ metadata:
   name: default
   labels:
   {{- include "capsule.labels" . | nindent 4 }}
-  {{- with .Values.customAnnotations }}
   annotations:
+    capsule.clastix.io/mutating-webhook-configuration-name: {{ include "capsule.fullname" . }}-mutating-webhook-configuration
+    capsule.clastix.io/tls-secret-name: {{ include "capsule.secretTlsName" . }}
+    capsule.clastix.io/validating-webhook-configuration-name: {{ include "capsule.fullname" . }}-validating-webhook-configuration
+    capsule.clastix.io/enable-tls-configuration: "{{ .Values.tls.enableController }}"
+  {{- with .Values.customAnnotations }}
     {{- toYaml . | nindent 4 }}
   {{- end }}
 spec:

charts/capsule/templates/daemonset.yaml

@@ -0,0 +1,88 @@
+{{- if eq .Values.manager.kind "DaemonSet" }}
+apiVersion: apps/v1
+kind: DaemonSet
+metadata:
+  name: {{ include "capsule.controllerName" . }}
+  labels:
+    {{- include "capsule.labels" . | nindent 4 }}
+  {{- with .Values.customAnnotations }}
+  annotations:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+spec:
+  updateStrategy:
+    type: RollingUpdate
+  selector:
+    matchLabels:
+      {{- include "capsule.selectorLabels" . | nindent 6 }}
+  template:
+    metadata:
+      {{- with .Values.podAnnotations }}
+      annotations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      labels:
+        {{- include "capsule.labels" . | nindent 8 }}
+    spec:
+      {{- with .Values.imagePullSecrets }}
+      imagePullSecrets:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      serviceAccountName: {{ include "capsule.serviceAccountName" . }}
+      {{- if .Values.manager.hostNetwork }}
+      hostNetwork: true
+      dnsPolicy: ClusterFirstWithHostNet
+      {{- end }}
+      priorityClassName: {{ .Values.priorityClassName }}
+      {{- with .Values.nodeSelector }}
+      nodeSelector:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.tolerations }}
+      tolerations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.affinity }}
+      affinity:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      volumes:
+        - name: cert
+          secret:
+            defaultMode: 420
+            secretName: {{ include "capsule.secretTlsName" . }}
+      containers:
+        - name: manager
+          command:
+          - /manager
+          args:
+          - --enable-leader-election
+          - --zap-log-level={{ default 4 .Values.manager.options.logLevel }}
+          - --configuration-name=default
+          image: {{ include "capsule.managerFullyQualifiedDockerImage" . }}
+          imagePullPolicy: {{ .Values.manager.image.pullPolicy }}
+          env:
+          - name: NAMESPACE
+            valueFrom:
+              fieldRef:
+                fieldPath: metadata.namespace
+          ports:
+            - name: webhook-server
+              containerPort: 9443
+              protocol: TCP
+            - name: metrics
+              containerPort: 8080
+              protocol: TCP
+          livenessProbe:
+            {{- toYaml .Values.manager.livenessProbe | nindent 12}}
+          readinessProbe:
+            {{- toYaml .Values.manager.readinessProbe | nindent 12}}
+          volumeMounts:
+          - mountPath: /tmp/k8s-webhook-server/serving-certs
+            name: cert
+            readOnly: true
+          resources:
+            {{- toYaml .Values.manager.resources | nindent 12 }}
+          securityContext:
+            allowPrivilegeEscalation: false
+{{- end }}

charts/capsule/templates/deployment.yaml

@@ -1,7 +1,8 @@
+{{- if eq .Values.manager.kind "Deployment" }}
 apiVersion: apps/v1
 kind: Deployment
 metadata:
-  name: {{ include "capsule.deploymentName" . }}
+  name: {{ include "capsule.controllerName" . }}
   labels:
     {{- include "capsule.labels" . | nindent 4 }}
   {{- with .Values.customAnnotations }}
@@ -29,6 +30,7 @@ spec:
       serviceAccountName: {{ include "capsule.serviceAccountName" . }}
       {{- if .Values.manager.hostNetwork }}
       hostNetwork: true
+      dnsPolicy: ClusterFirstWithHostNet
       {{- end }}
       priorityClassName: {{ .Values.priorityClassName }}
       {{- with .Values.nodeSelector }}
@@ -47,7 +49,7 @@ spec:
         - name: cert
           secret:
             defaultMode: 420
-            secretName: {{ include "capsule.fullname" . }}-tls
+            secretName: {{ include "capsule.secretTlsName" . }}
       containers:
         - name: manager
           command:
@@ -82,3 +84,4 @@ spec:
             {{- toYaml .Values.manager.resources | nindent 12 }}
           securityContext:
             allowPrivilegeEscalation: false
+{{- end }}

charts/capsule/templates/mutatingwebhookconfiguration.yaml

@@ -4,8 +4,11 @@ metadata:
   name: {{ include "capsule.fullname" . }}-mutating-webhook-configuration
   labels:
     {{- include "capsule.labels" . | nindent 4 }}
-  {{- with .Values.customAnnotations }}
   annotations:
+  {{- if .Values.certManager.generateCertificates }}
+    cert-manager.io/inject-ca-from: {{ .Release.Namespace }}/{{ include "capsule.fullname" . }}-webhook-cert
+  {{-  end }}
+  {{- with .Values.customAnnotations }}
     {{- toYaml . | nindent 4 }}
   {{- end }}
 webhooks:
@@ -13,7 +16,9 @@ webhooks:
     - v1
     - v1beta1
   clientConfig:
+{{- if not .Values.certManager.generateCertificates }}
     caBundle: Cg==
+{{- end }}
     service:
       name: {{ include "capsule.fullname" . }}-webhook-service
       namespace: {{ .Release.Namespace }}

charts/capsule/templates/post-install-job.yaml

@@ -1,4 +1,5 @@
-{{- $cmd := "while [ -z $$(kubectl -n $NAMESPACE get secret capsule-tls -o jsonpath='{.data.tls\\\\.crt}') ];" -}}
+{{- if .Values.tls.create }}
+{{- $cmd := printf "while [ -z $$(kubectl -n $NAMESPACE get secret %s -o jsonpath='{.data.tls\\\\.crt}') ];" (include "capsule.secretTlsName" .) -}}
 {{- $cmd = printf "%s do echo 'waiting Capsule to be up and running...' && sleep 5;" $cmd -}}
 {{- $cmd = printf "%s done" $cmd -}}
 apiVersion: batch/v1
@@ -25,6 +26,14 @@ spec:
         app.kubernetes.io/instance: {{ .Release.Name | quote }}
         helm.sh/chart: "{{ .Chart.Name }}-{{ .Chart.Version }}"
     spec:
+      {{- with .Values.imagePullSecrets }}
+      imagePullSecrets:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.tolerations }}
+      tolerations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
       restartPolicy: Never
       containers:
       - name: post-install-job
@@ -36,4 +45,5 @@ spec:
           valueFrom:
             fieldRef:
               fieldPath: metadata.namespace
-      serviceAccountName: {{ include "capsule.serviceAccountName" . }}
+      serviceAccountName: {{ include "capsule.serviceAccountName" . }}
+{{- end }}

charts/capsule/templates/pre-delete-job.yaml

@@ -1,5 +1,7 @@
-{{- $cmd := printf "kubectl scale deployment -n $NAMESPACE %s --replicas 0 &&" (include "capsule.deploymentName" .) -}}
-{{- $cmd = printf "%s kubectl delete secret -n $NAMESPACE %s %s --ignore-not-found &&" $cmd (include "capsule.secretTlsName" .) (include "capsule.secretCaName" .) -}}
+{{- $cmd := ""}}
+{{- if or (.Values.tls.create) (.Values.certManager.generateCertificates) }}
+{{- $cmd = printf "%s kubectl delete secret -n $NAMESPACE %s --ignore-not-found &&" $cmd (include "capsule.secretTlsName" .) -}}
+{{- end }}
 {{- $cmd = printf "%s kubectl delete clusterroles.rbac.authorization.k8s.io capsule-namespace-deleter capsule-namespace-provisioner --ignore-not-found &&" $cmd -}}
 {{- $cmd = printf "%s kubectl delete clusterrolebindings.rbac.authorization.k8s.io capsule-namespace-deleter capsule-namespace-provisioner --ignore-not-found" $cmd -}}
 apiVersion: batch/v1
@@ -26,6 +28,14 @@ spec:
         app.kubernetes.io/instance: {{ .Release.Name | quote }}
         helm.sh/chart: "{{ .Chart.Name }}-{{ .Chart.Version }}"
     spec:
+      {{- with .Values.imagePullSecrets }}
+      imagePullSecrets:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.tolerations }}
+      tolerations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
       restartPolicy: Never
       containers:
         - name: pre-delete-job

charts/capsule/templates/servicemonitor.yaml

@@ -15,17 +15,33 @@ metadata:
   {{- end }}
 spec:
   endpoints:
-  - interval: 15s
+  {{- with .Values.serviceMonitor.endpoint }}
+  - interval: {{ .interval }}
     port: metrics
     path: /metrics
+    {{- with .scrapeTimeout }}
+    scrapeTimeout: {{ . }}
+    {{- end }}
+    {{- with .metricRelabelings }}
+    metricRelabelings: {{- toYaml . | nindent 6 }}
+    {{- end }}
+    {{- with .relabelings }}
+    relabelings: {{- toYaml . | nindent 6 }}
+    {{- end }}
+  {{- end }}  
   jobLabel: app.kubernetes.io/name
+  {{- with .Values.serviceMonitor.targetLabels }}
+  targetLabels: {{- toYaml . | nindent 4 }}
+  {{- end }}
   selector:
     matchLabels:
-    {{- include "capsule.labels" . | nindent 6 }}
-    {{- with .Values.serviceMonitor.matchLabels }}
-    {{- toYaml . | nindent 6 }}
+    {{- if .Values.serviceMonitor.matchLabels }}
+      {{- toYaml .Values.serviceMonitor.matchLabels | nindent 6 }}
+    {{- else }}
+      {{- include "capsule.labels" . | nindent 6 }}
     {{- end }}
   namespaceSelector:
     matchNames:
       - {{ .Release.Namespace }}
 {{- end }}
+

charts/capsule/templates/validatingwebhookconfiguration.yaml

@@ -4,8 +4,11 @@ metadata:
   name: {{ include "capsule.fullname" . }}-validating-webhook-configuration
   labels:
     {{- include "capsule.labels" . | nindent 4 }}
-  {{- with .Values.customAnnotations }}
   annotations:
+  {{- if .Values.certManager.generateCertificates }}
+    cert-manager.io/inject-ca-from: {{ .Release.Namespace }}/{{ include "capsule.fullname" . }}-webhook-cert
+  {{-  end }}
+  {{- with .Values.customAnnotations }}
     {{- toYaml . | nindent 4 }}
   {{- end }}
 webhooks:
@@ -13,7 +16,9 @@ webhooks:
     - v1
     - v1beta1
   clientConfig:
+{{- if not .Values.certManager.generateCertificates }}
     caBundle: Cg==
+{{- end }}
     service:
       name: {{ include "capsule.fullname" . }}-webhook-service
       namespace: {{ .Release.Namespace }}
@@ -43,7 +48,9 @@ webhooks:
     - v1
     - v1beta1
   clientConfig:
+{{- if not .Values.certManager.generateCertificates }}
     caBundle: Cg==
+{{- end }}
     service:
       name: {{ include "capsule.fullname" . }}-webhook-service
       namespace: {{ .Release.Namespace }}
@@ -74,7 +81,9 @@ webhooks:
     - v1
     - v1beta1
   clientConfig:
+{{- if not .Values.certManager.generateCertificates }}
     caBundle: Cg==
+{{- end }}
     service:
       name: {{ include "capsule.fullname" . }}-webhook-service
       namespace: {{ .Release.Namespace }}
@@ -103,7 +112,9 @@ webhooks:
     - v1
     - v1beta1
   clientConfig:
+{{- if not .Values.certManager.generateCertificates }}
     caBundle: Cg==
+{{- end }}
     service:
       name: {{ include "capsule.fullname" . }}-webhook-service
       namespace: {{ .Release.Namespace }}
@@ -132,7 +143,9 @@ webhooks:
     - v1
     - v1beta1
   clientConfig:
+{{- if not .Values.certManager.generateCertificates }}
     caBundle: Cg==
+{{- end }}
     service:
       name: {{ include "capsule.fullname" . }}-webhook-service
       namespace: {{ .Release.Namespace }}
@@ -160,10 +173,12 @@ webhooks:
     - v1
     - v1beta1
   clientConfig:
+{{- if not .Values.certManager.generateCertificates }}
     caBundle: Cg==
+{{- end }}
     service:
       name: {{ include "capsule.fullname" . }}-webhook-service
-      namespace: capsule-system
+      namespace: {{ .Release.Namespace }}
       path: /persistentvolumeclaims
   failurePolicy: {{ .Values.webhooks.persistentvolumeclaims.failurePolicy }}
   name: pvc.capsule.clastix.io
@@ -186,7 +201,9 @@ webhooks:
     - v1
     - v1beta1
   clientConfig:
+{{- if not .Values.certManager.generateCertificates }}
     caBundle: Cg==
+{{- end }}
     service:
       name: {{ include "capsule.fullname" . }}-webhook-service
       namespace: {{ .Release.Namespace }}
@@ -215,7 +232,9 @@ webhooks:
     - v1
     - v1beta1
   clientConfig:
+{{- if not .Values.certManager.generateCertificates }}
     caBundle: Cg==
+{{- end }}
     service:
       name: {{ include "capsule.fullname" . }}-webhook-service
       namespace: {{ .Release.Namespace }}
@@ -240,3 +259,31 @@ webhooks:
       scope: '*'
   sideEffects: None
   timeoutSeconds: {{ .Values.validatingWebhooksTimeoutSeconds }}
+- admissionReviewVersions:
+    - v1
+    - v1beta1
+  clientConfig:
+{{- if not .Values.certManager.generateCertificates }}
+    caBundle: Cg==
+{{- end }}
+    service:
+      name: {{ include "capsule.fullname" . }}-webhook-service
+      namespace: {{ .Release.Namespace }}
+      path: /nodes
+      port: 443
+  failurePolicy: {{ .Values.webhooks.nodes.failurePolicy }}
+  name: nodes.capsule.clastix.io
+  matchPolicy: Exact
+  namespaceSelector: {}
+  objectSelector: {}
+  rules:
+    - apiGroups:
+        - ""
+      apiVersions:
+        - v1
+      operations:
+        - UPDATE
+      resources:
+        - nodes
+  sideEffects: None
+  timeoutSeconds: {{ .Values.validatingWebhooksTimeoutSeconds }}

charts/capsule/values.yaml

@@ -2,29 +2,59 @@
 # This is a YAML-formatted file.
 # Declare variables to be passed into your templates.
 
+# Secret Options
+tls:
+  # -- Start the Capsule controller that injects the CA into mutating and validating webhooks, and CRD as well.
+  enableController: true
+  # -- When cert-manager is disabled, Capsule will generate the TLS certificate for webhook and CRDs conversion.
+  create: true
+  # -- Override name of the Capsule TLS Secret name when externally managed.
+  name: ""
+
+# Manager Options
 manager:
+
+  # -- Set the controller deployment mode as `Deployment` or `DaemonSet`. 
+  kind: Deployment
+
   image:
-    repository: quay.io/clastix/capsule
+    # -- Set the image repository of the capsule.
+    repository: clastix/capsule
+    # -- Set the image pull policy.
     pullPolicy: IfNotPresent
+    # -- Overrides the image tag whose default is the chart appVersion.
     tag: ''
 
-  # Specifies if the container should be started in hostNetwork mode.
+  # -- Configuration for `imagePullSecrets` so that you can use a private images registry.  
+  imagePullSecrets: []
+
+  # -- Specifies if the container should be started in hostNetwork mode.
   #
   # Required for use in some managed kubernetes clusters (such as AWS EKS) with custom
   # CNI (such as calico), because control-plane managed by AWS cannot communicate
   # with pods' IP CIDR and admission webhooks are not working
   hostNetwork: false
 
-  # Additional Capsule options
+  # Additional Capsule Controller Options
   options:
+    # -- Set the log verbosity of the capsule with a value from 1 to 10
     logLevel: '4'
+    # -- Boolean, enforces the Tenant owner, during Namespace creation, to name it using the selected Tenant name as prefix, separated by a dash
     forceTenantPrefix: false
+    # -- Override the Capsule user groups  
     capsuleUserGroups: ["capsule.clastix.io"]
+    # -- If specified, disallows creation of namespaces matching the passed regexp   
     protectedNamespaceRegex: ""
+    # -- Specifies whether capsule webhooks certificates should be generated by capsule operator
+    generateCertificates: true
+
+  # -- Configure the liveness probe using Deployment probe spec   
   livenessProbe:
     httpGet:
       path: /healthz
       port: 10080
+  
+  # -- Configure the readiness probe using Deployment probe spec
   readinessProbe:
     httpGet:
       path: /readyz
@@ -37,46 +67,63 @@ manager:
     requests:
       cpu: 200m
       memory: 128Mi
-jobs:
-  image:
-    repository: quay.io/clastix/kubectl
-    pullPolicy: IfNotPresent
-    tag: "v1.20.7"
-imagePullSecrets: []
-serviceAccount:
-  create: true
-  annotations: {}
-  name: "capsule"
+
+# -- Annotations to add to the capsule pod.
 podAnnotations: {}
+#  The following annotations guarantee scheduling for critical add-on pods
+#  podAnnotations:
+#    scheduler.alpha.kubernetes.io/critical-pod: ''
+
+# -- Set the priority class name of the Capsule pod
 priorityClassName: '' #system-cluster-critical
+
+# -- Set the node selector for the Capsule pod
 nodeSelector: {}
 #  node-role.kubernetes.io/master: ""
+
+# -- Set list of tolerations for the Capsule pod
 tolerations: []
 #- key: CriticalAddonsOnly
 #  operator: Exists
 #- effect: NoSchedule
 #  key: node-role.kubernetes.io/master
+
+# -- Set the replica count for capsule pod
 replicaCount: 1
+
+# -- Set affinity rules for the Capsule pod
 affinity: {}
+
 podSecurityPolicy:
+  # -- Specify if a Pod Security Policy must be created
   enabled: false
 
-serviceMonitor:
-  enabled: false
-  # Install the ServiceMonitor into a different Namespace, as the monitoring stack one (default: the release one)
-  namespace: ''
-  # Assign additional labels according to Prometheus' serviceMonitorSelector matching labels
-  labels: {}
+jobs:
+  image:
+    # -- Set the image repository of the helm chart job
+    repository: quay.io/clastix/kubectl
+    # -- Set the image pull policy of the helm chart job
+    pullPolicy: IfNotPresent
+    # -- Set the image tag of the helm chart job
+    tag: ""
+
+# ServiceAccount
+serviceAccount:
+  # -- Specifies whether a service account should be created.
+  create: true
+  # -- Annotations to add to the service account.
   annotations: {}
-  matchLabels: {}
-  serviceAccount:
-    name: capsule
-    namespace: capsule-system
+  # -- The name of the service account to use. If not set and `serviceAccount.create=true`, a name is generated using the fullname template
+  name: "capsule"
 
-# Additional labels
+certManager:
+  # -- Specifies whether capsule webhooks certificates should be generated using cert-manager
+  generateCertificates: false
+
+# -- Additional labels which will be added to all resources created by Capsule helm chart 
 customLabels: {}
 
-# Additional annotations
+# -- Additional annotations which will be added to all resources created by Capsule helm chart 
 customAnnotations: {}
 
 # Webhooks configurations
@@ -123,5 +170,39 @@ webhooks:
       matchExpressions:
         - key: capsule.clastix.io/tenant
           operator: Exists
+  nodes:
+    failurePolicy: Fail
+
+# -- Timeout in seconds for mutating webhooks
 mutatingWebhooksTimeoutSeconds: 30
+# -- Timeout in seconds for validating webhooks
 validatingWebhooksTimeoutSeconds: 30
+
+# ServiceMonitor
+serviceMonitor:
+  # -- Enable ServiceMonitor
+  enabled: false
+  # -- Install the ServiceMonitor into a different Namespace, as the monitoring stack one (default: the release one)
+  namespace: ''
+  # -- Assign additional labels according to Prometheus' serviceMonitorSelector matching labels
+  labels: {}
+  # -- Assign additional Annotations
+  annotations: {}
+  # -- Change matching labels
+  matchLabels: {}
+  # -- Set targetLabels for the serviceMonitor
+  targetLabels: []
+  serviceAccount:
+    # -- ServiceAccount for Metrics RBAC
+    name: capsule
+    # -- ServiceAccount Namespace for Metrics RBAC
+    namespace: capsule-system
+  endpoint:
+    # -- Set the scrape interval for the endpoint of the serviceMonitor
+    interval: "15s"
+    # -- Set the scrape timeout for the endpoint of the serviceMonitor
+    scrapeTimeout: ""
+    # -- Set metricRelabelings for the endpoint of the serviceMonitor
+    metricRelabelings: []
+    # -- Set relabelings for the endpoint of the serviceMonitor
+    relabelings: []

config/crd/bases/capsule.clastix.io_capsuleconfigurations.yaml

@@ -19,7 +19,7 @@ spec:
   - name: v1alpha1
     schema:
       openAPIV3Schema:
-        description: CapsuleConfiguration is the Schema for the Capsule configuration API
+        description: CapsuleConfiguration is the Schema for the Capsule configuration 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'
@@ -30,7 +30,7 @@ spec:
           metadata:
             type: object
           spec:
-            description: CapsuleConfigurationSpec defines the Capsule configuration
+            description: CapsuleConfigurationSpec defines the Capsule configuration.
             properties:
               forceTenantPrefix:
                 default: false

config/crd/bases/capsule.clastix.io_tenants.yaml

@@ -46,7 +46,7 @@ spec:
     name: v1alpha1
     schema:
       openAPIV3Schema:
-        description: Tenant is the Schema for the tenants API
+        description: Tenant is the Schema for the tenants 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'
@@ -57,7 +57,7 @@ spec:
           metadata:
             type: object
           spec:
-            description: TenantSpec defines the desired state of Tenant
+            description: TenantSpec defines the desired state of Tenant.
             properties:
               additionalRoleBindings:
                 items:
@@ -475,7 +475,7 @@ spec:
                   type: string
                 type: object
               owner:
-                description: OwnerSpec defines tenant owner name and kind
+                description: OwnerSpec defines tenant owner name and kind.
                 properties:
                   kind:
                     enum:
@@ -558,7 +558,7 @@ spec:
             - owner
             type: object
           status:
-            description: TenantStatus defines the observed state of Tenant
+            description: TenantStatus defines the observed state of Tenant.
             properties:
               namespaces:
                 items:
@@ -598,7 +598,7 @@ spec:
     name: v1beta1
     schema:
       openAPIV3Schema:
-        description: Tenant is the Schema for the tenants API
+        description: Tenant is the Schema for the tenants 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'
@@ -609,7 +609,7 @@ spec:
           metadata:
             type: object
           spec:
-            description: TenantSpec defines the desired state of Tenant
+            description: TenantSpec defines the desired state of Tenant.
             properties:
               additionalRoleBindings:
                 description: Specifies additional RoleBindings assigned to the Tenant. Capsule will ensure that all namespaces in the Tenant always contain the RoleBinding for the given ClusterRole. Optional.
@@ -654,6 +654,9 @@ spec:
                   allowedRegex:
                     type: string
                 type: object
+              gitOpsReady:
+                description: Configured RBAC for machine owners tailored for GitOps controllers.
+                type: boolean
               imagePullPolicies:
                 description: Specify the allowed values for the imagePullPolicies option in Pod resources. Capsule assures that all Pod resources created in the Tenant can use only one of the allowed policy. Optional.
                 items:
@@ -697,7 +700,7 @@ spec:
                     type: string
                 type: object
               limitRanges:
-                description: Specifies the NetworkPolicies assigned to the Tenant. The assigned NetworkPolicies are inherited by any namespace created in the Tenant. Optional.
+                description: Specifies the resource min/max usage restrictions to the Tenant. The assigned values are inherited by any namespace created in the Tenant. Optional.
                 properties:
                   items:
                     items:
@@ -1055,7 +1058,7 @@ spec:
               nodeSelector:
                 additionalProperties:
                   type: string
-                description: Specifies the label to control the placement of pods on a given pool of worker nodes. All namesapces created within the Tenant will have the node selector annotation. This annotation tells the Kubernetes scheduler to place pods on the nodes having the selector label. Optional.
+                description: Specifies the label to control the placement of pods on a given pool of worker nodes. All namespaces created within the Tenant will have the node selector annotation. This annotation tells the Kubernetes scheduler to place pods on the nodes having the selector label. Optional.
                 type: object
               owners:
                 description: Specifies the owners of the Tenant. Mandatory.
@@ -1224,7 +1227,7 @@ spec:
             - owners
             type: object
           status:
-            description: Returns the observed state of the Tenant
+            description: Returns the observed state of the Tenant.
             properties:
               namespaces:
                 description: List of namespaces assigned to the Tenant.

config/grafana/dashboard.yaml

@@ -0,0 +1,7 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  labels:
+    # label selector used by Grafana to load the dashboards from Config Maps
+    grafana_dashboard: "1"
+  name: capsule-grafana-dashboard

config/grafana/kustomization.yaml

@@ -0,0 +1,8 @@
+configMapGenerator:
+- name: capsule-grafana-dashboard
+  files:
+  - dashboard.json
+generatorOptions:
+  disableNameSuffixHash: true
+patchesStrategicMerge:
+- dashboard.yaml

config/install.yaml

@@ -24,7 +24,7 @@ spec:
   - name: v1alpha1
     schema:
       openAPIV3Schema:
-        description: CapsuleConfiguration is the Schema for the Capsule configuration API
+        description: CapsuleConfiguration is the Schema for the Capsule configuration 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'
@@ -35,7 +35,7 @@ spec:
           metadata:
             type: object
           spec:
-            description: CapsuleConfigurationSpec defines the Capsule configuration
+            description: CapsuleConfigurationSpec defines the Capsule configuration.
             properties:
               forceTenantPrefix:
                 default: false
@@ -118,7 +118,7 @@ spec:
     name: v1alpha1
     schema:
       openAPIV3Schema:
-        description: Tenant is the Schema for the tenants API
+        description: Tenant is the Schema for the tenants 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'
@@ -129,7 +129,7 @@ spec:
           metadata:
             type: object
           spec:
-            description: TenantSpec defines the desired state of Tenant
+            description: TenantSpec defines the desired state of Tenant.
             properties:
               additionalRoleBindings:
                 items:
@@ -547,7 +547,7 @@ spec:
                   type: string
                 type: object
               owner:
-                description: OwnerSpec defines tenant owner name and kind
+                description: OwnerSpec defines tenant owner name and kind.
                 properties:
                   kind:
                     enum:
@@ -630,7 +630,7 @@ spec:
             - owner
             type: object
           status:
-            description: TenantStatus defines the observed state of Tenant
+            description: TenantStatus defines the observed state of Tenant.
             properties:
               namespaces:
                 items:
@@ -670,7 +670,7 @@ spec:
     name: v1beta1
     schema:
       openAPIV3Schema:
-        description: Tenant is the Schema for the tenants API
+        description: Tenant is the Schema for the tenants 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'
@@ -681,7 +681,7 @@ spec:
           metadata:
             type: object
           spec:
-            description: TenantSpec defines the desired state of Tenant
+            description: TenantSpec defines the desired state of Tenant.
             properties:
               additionalRoleBindings:
                 description: Specifies additional RoleBindings assigned to the Tenant. Capsule will ensure that all namespaces in the Tenant always contain the RoleBinding for the given ClusterRole. Optional.
@@ -769,7 +769,7 @@ spec:
                     type: string
                 type: object
               limitRanges:
-                description: Specifies the NetworkPolicies assigned to the Tenant. The assigned NetworkPolicies are inherited by any namespace created in the Tenant. Optional.
+                description: Specifies the resource min/max usage restrictions to the Tenant. The assigned values are inherited by any namespace created in the Tenant. Optional.
                 properties:
                   items:
                     items:
@@ -1127,7 +1127,7 @@ spec:
               nodeSelector:
                 additionalProperties:
                   type: string
-                description: Specifies the label to control the placement of pods on a given pool of worker nodes. All namesapces created within the Tenant will have the node selector annotation. This annotation tells the Kubernetes scheduler to place pods on the nodes having the selector label. Optional.
+                description: Specifies the label to control the placement of pods on a given pool of worker nodes. All namespaces created within the Tenant will have the node selector annotation. This annotation tells the Kubernetes scheduler to place pods on the nodes having the selector label. Optional.
                 type: object
               owners:
                 description: Specifies the owners of the Tenant. Mandatory.
@@ -1296,7 +1296,7 @@ spec:
             - owners
             type: object
           status:
-            description: Returns the observed state of the Tenant
+            description: Returns the observed state of the Tenant.
             properties:
               namespaces:
                 description: List of namespaces assigned to the Tenant.
@@ -1411,7 +1411,7 @@ spec:
           valueFrom:
             fieldRef:
               fieldPath: metadata.namespace
-        image: quay.io/clastix/capsule:v0.1.1-rc0
+        image: clastix/capsule:v0.1.2
         imagePullPolicy: IfNotPresent
         name: manager
         ports:
@@ -1582,6 +1582,29 @@ webhooks:
     - networkpolicies
     scope: Namespaced
   sideEffects: None
+- admissionReviewVersions:
+  - v1
+  clientConfig:
+    service:
+      name: capsule-webhook-service
+      namespace: capsule-system
+      path: /nodes
+  failurePolicy: Fail
+  name: nodes.capsule.clastix.io
+  namespaceSelector:
+    matchExpressions:
+    - key: capsule.clastix.io/tenant
+      operator: Exists
+  rules:
+  - apiGroups:
+    - ""
+    apiVersions:
+    - v1
+    operations:
+    - UPDATE
+    resources:
+    - nodes
+  sideEffects: None
 - admissionReviewVersions:
   - v1
   clientConfig:

config/manager/kustomization.yaml

@@ -6,5 +6,5 @@ apiVersion: kustomize.config.k8s.io/v1beta1
 kind: Kustomization
 images:
 - name: controller
-  newName: quay.io/clastix/capsule
-  newTag: v0.1.1-rc0
+  newName: clastix/capsule
+  newTag: v0.1.2

config/webhook/manifests.yaml

@@ -118,6 +118,25 @@ webhooks:
     resources:
     - networkpolicies
   sideEffects: None
+- admissionReviewVersions:
+  - v1
+  clientConfig:
+    service:
+      name: webhook-service
+      namespace: system
+      path: /nodes
+  failurePolicy: Fail
+  name: nodes.capsule.clastix.io
+  rules:
+  - apiGroups:
+    - ""
+    apiVersions:
+    - v1
+    operations:
+    - UPDATE
+    resources:
+    - nodes
+  sideEffects: None
 - admissionReviewVersions:
   - v1
   clientConfig:

config/webhook/patch_ns_selector.yaml

@@ -34,6 +34,12 @@
     matchExpressions:
       - key: capsule.clastix.io/tenant
         operator: Exists
+- op: add
+  path: /webhooks/7/namespaceSelector
+  value:
+    matchExpressions:
+      - key: capsule.clastix.io/tenant
+        operator: Exists
 - op: add
   path: /webhooks/0/rules/0/scope
   value: Namespaced
@@ -43,12 +49,12 @@
 - op: add
   path: /webhooks/3/rules/0/scope
   value: Namespaced
-- op: add
-  path: /webhooks/4/rules/0/scope
-  value: Namespaced
 - op: add
   path: /webhooks/5/rules/0/scope
   value: Namespaced
 - op: add
   path: /webhooks/6/rules/0/scope
   value: Namespaced
+- op: add
+  path: /webhooks/7/rules/0/scope
+  value: Namespaced

controllers/config/manager.go

@@ -9,13 +9,11 @@ import (
 	"github.com/go-logr/logr"
 	"github.com/pkg/errors"
 	ctrl "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/event"
-	"sigs.k8s.io/controller-runtime/pkg/predicate"
 	"sigs.k8s.io/controller-runtime/pkg/reconcile"
 
 	capsulev1alpha1 "github.com/clastix/capsule/api/v1alpha1"
+	"github.com/clastix/capsule/controllers/utils"
 	"github.com/clastix/capsule/pkg/configuration"
 )
 
@@ -24,44 +22,23 @@ type Manager struct {
 	Client client.Client
 }
 
-// InjectClient injects the Client interface, required by the Runnable interface
+// InjectClient injects the Client interface, required by the Runnable interface.
 func (c *Manager) InjectClient(client client.Client) error {
 	c.Client = client
 
 	return nil
 }
 
-func filterByName(objName, desired string) bool {
-	return objName == desired
-}
-
-func forOptionPerInstanceName(instanceName string) builder.ForOption {
-	return builder.WithPredicates(predicate.Funcs{
-		CreateFunc: func(event event.CreateEvent) bool {
-			return filterByName(event.Object.GetName(), instanceName)
-		},
-		DeleteFunc: func(deleteEvent event.DeleteEvent) bool {
-			return filterByName(deleteEvent.Object.GetName(), instanceName)
-		},
-		UpdateFunc: func(updateEvent event.UpdateEvent) bool {
-			return filterByName(updateEvent.ObjectNew.GetName(), instanceName)
-		},
-		GenericFunc: func(genericEvent event.GenericEvent) bool {
-			return filterByName(genericEvent.Object.GetName(), instanceName)
-		},
-	})
-}
-
 func (c *Manager) SetupWithManager(mgr ctrl.Manager, configurationName string) error {
 	return ctrl.NewControllerManagedBy(mgr).
-		For(&capsulev1alpha1.CapsuleConfiguration{}, forOptionPerInstanceName(configurationName)).
+		For(&capsulev1alpha1.CapsuleConfiguration{}, utils.NamesMatchingPredicate(configurationName)).
 		Complete(c)
 }
 
 func (c *Manager) Reconcile(ctx context.Context, request reconcile.Request) (res reconcile.Result, err error) {
 	c.Log.Info("CapsuleConfiguration reconciliation started", "request.name", request.Name)
 
-	cfg := configuration.NewCapsuleConfiguration(c.Client, request.Name)
+	cfg := configuration.NewCapsuleConfiguration(ctx, c.Client, request.Name)
 	// Validating the Capsule Configuration options
 	if _, err = cfg.ProtectedNamespaceRegexp(); err != nil {
 		panic(errors.Wrap(err, "Invalid configuration for protected Namespace regex"))

controllers/rbac/const.go

@@ -23,7 +23,7 @@ var (
 				{
 					APIGroups: []string{""},
 					Resources: []string{"namespaces"},
-					Verbs:     []string{"create"},
+					Verbs:     []string{"create", "patch"},
 				},
 			},
 		},
@@ -35,7 +35,7 @@ var (
 				{
 					APIGroups: []string{""},
 					Resources: []string{"namespaces"},
-					Verbs:     []string{"delete", "patch"},
+					Verbs:     []string{"delete"},
 				},
 			},
 		},
@@ -48,7 +48,7 @@ var (
 		RoleRef: rbacv1.RoleRef{
 			Kind:     "ClusterRole",
 			Name:     ProvisionerRoleName,
-			APIGroup: "rbac.authorization.k8s.io",
+			APIGroup: rbacv1.GroupName,
 		},
 	}
 )

controllers/rbac/manager.go

@@ -10,20 +10,19 @@ import (
 	"github.com/go-logr/logr"
 	"github.com/hashicorp/go-multierror"
 	rbacv1 "k8s.io/api/rbac/v1"
-	"k8s.io/apimachinery/pkg/api/errors"
+	apierrors "k8s.io/apimachinery/pkg/api/errors"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/client-go/util/workqueue"
 	ctrl "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/controllerutil"
 	"sigs.k8s.io/controller-runtime/pkg/event"
 	"sigs.k8s.io/controller-runtime/pkg/handler"
-	"sigs.k8s.io/controller-runtime/pkg/predicate"
 	"sigs.k8s.io/controller-runtime/pkg/reconcile"
 	"sigs.k8s.io/controller-runtime/pkg/source"
 
 	capsulev1alpha1 "github.com/clastix/capsule/api/v1alpha1"
+	"github.com/clastix/capsule/controllers/utils"
 	"github.com/clastix/capsule/pkg/configuration"
 )
 
@@ -33,65 +32,40 @@ type Manager struct {
 	Configuration configuration.Configuration
 }
 
-// InjectClient injects the Client interface, required by the Runnable interface
+// InjectClient injects the Client interface, required by the Runnable interface.
 func (r *Manager) InjectClient(c client.Client) error {
 	r.Client = c
+
 	return nil
 }
 
-func (r *Manager) filterByNames(name string) bool {
-	return name == ProvisionerRoleName || name == DeleterRoleName
-}
+func (r *Manager) SetupWithManager(ctx context.Context, mgr ctrl.Manager, configurationName string) (err error) {
+	namesPredicate := utils.NamesMatchingPredicate(ProvisionerRoleName, DeleterRoleName)
 
-//nolint:dupl
-func (r *Manager) SetupWithManager(mgr ctrl.Manager, configurationName string) (err error) {
 	crErr := ctrl.NewControllerManagedBy(mgr).
-		For(&rbacv1.ClusterRole{}, builder.WithPredicates(predicate.Funcs{
-			CreateFunc: func(event event.CreateEvent) bool {
-				return r.filterByNames(event.Object.GetName())
-			},
-			DeleteFunc: func(deleteEvent event.DeleteEvent) bool {
-				return r.filterByNames(deleteEvent.Object.GetName())
-			},
-			UpdateFunc: func(updateEvent event.UpdateEvent) bool {
-				return r.filterByNames(updateEvent.ObjectNew.GetName())
-			},
-			GenericFunc: func(genericEvent event.GenericEvent) bool {
-				return r.filterByNames(genericEvent.Object.GetName())
-			},
-		})).
+		For(&rbacv1.ClusterRole{}, namesPredicate).
 		Complete(r)
 	if crErr != nil {
 		err = multierror.Append(err, crErr)
 	}
+
 	crbErr := ctrl.NewControllerManagedBy(mgr).
-		For(&rbacv1.ClusterRoleBinding{}, builder.WithPredicates(predicate.Funcs{
-			CreateFunc: func(event event.CreateEvent) bool {
-				return r.filterByNames(event.Object.GetName())
-			},
-			DeleteFunc: func(deleteEvent event.DeleteEvent) bool {
-				return r.filterByNames(deleteEvent.Object.GetName())
-			},
-			UpdateFunc: func(updateEvent event.UpdateEvent) bool {
-				return r.filterByNames(updateEvent.ObjectNew.GetName())
-			},
-			GenericFunc: func(genericEvent event.GenericEvent) bool {
-				return r.filterByNames(genericEvent.Object.GetName())
-			},
-		})).
+		For(&rbacv1.ClusterRoleBinding{}, namesPredicate).
 		Watches(source.NewKindWithCache(&capsulev1alpha1.CapsuleConfiguration{}, mgr.GetCache()), handler.Funcs{
 			UpdateFunc: func(updateEvent event.UpdateEvent, limitingInterface workqueue.RateLimitingInterface) {
 				if updateEvent.ObjectNew.GetName() == configurationName {
-					if crbErr := r.EnsureClusterRoleBindings(); crbErr != nil {
+					if crbErr := r.EnsureClusterRoleBindings(ctx); crbErr != nil {
 						r.Log.Error(err, "cannot update ClusterRoleBinding upon CapsuleConfiguration update")
 					}
 				}
 			},
 		}).
 		Complete(r)
+
 	if crbErr != nil {
 		err = multierror.Append(err, crbErr)
 	}
+
 	return
 }
 
@@ -100,18 +74,19 @@ func (r *Manager) SetupWithManager(mgr ctrl.Manager, configurationName string) (
 func (r *Manager) Reconcile(ctx context.Context, request reconcile.Request) (res reconcile.Result, err error) {
 	switch request.Name {
 	case ProvisionerRoleName:
-		if err = r.EnsureClusterRole(ProvisionerRoleName); err != nil {
+		if err = r.EnsureClusterRole(ctx, ProvisionerRoleName); err != nil {
 			r.Log.Error(err, "Reconciliation for ClusterRole failed", "ClusterRole", ProvisionerRoleName)
 
 			break
 		}
-		if err = r.EnsureClusterRoleBindings(); err != nil {
+
+		if err = r.EnsureClusterRoleBindings(ctx); err != nil {
 			r.Log.Error(err, "Reconciliation for ClusterRoleBindings failed")
 
 			break
 		}
 	case DeleterRoleName:
-		if err = r.EnsureClusterRole(DeleterRoleName); err != nil {
+		if err = r.EnsureClusterRole(ctx, DeleterRoleName); err != nil {
 			r.Log.Error(err, "Reconciliation for ClusterRole failed", "ClusterRole", DeleterRoleName)
 		}
 	}
@@ -119,14 +94,14 @@ func (r *Manager) Reconcile(ctx context.Context, request reconcile.Request) (res
 	return
 }
 
-func (r *Manager) EnsureClusterRoleBindings() (err error) {
+func (r *Manager) EnsureClusterRoleBindings(ctx context.Context) (err error) {
 	crb := &rbacv1.ClusterRoleBinding{
 		ObjectMeta: metav1.ObjectMeta{
 			Name: ProvisionerRoleName,
 		},
 	}
 
-	_, err = controllerutil.CreateOrUpdate(context.TODO(), r.Client, crb, func() (err error) {
+	_, err = controllerutil.CreateOrUpdate(ctx, r.Client, crb, func() (err error) {
 		crb.RoleRef = provisionerClusterRoleBinding.RoleRef
 
 		crb.Subjects = []rbacv1.Subject{}
@@ -144,7 +119,7 @@ func (r *Manager) EnsureClusterRoleBindings() (err error) {
 	return
 }
 
-func (r *Manager) EnsureClusterRole(roleName string) (err error) {
+func (r *Manager) EnsureClusterRole(ctx context.Context, roleName string) (err error) {
 	role, ok := clusterRoles[roleName]
 	if !ok {
 		return fmt.Errorf("clusterRole %s is not mapped", roleName)
@@ -156,8 +131,9 @@ func (r *Manager) EnsureClusterRole(roleName string) (err error) {
 		},
 	}
 
-	_, err = controllerutil.CreateOrUpdate(context.TODO(), r.Client, clusterRole, func() error {
+	_, err = controllerutil.CreateOrUpdate(ctx, r.Client, clusterRole, func() error {
 		clusterRole.Rules = role.Rules
+
 		return nil
 	})
 
@@ -170,8 +146,9 @@ func (r *Manager) EnsureClusterRole(roleName string) (err error) {
 func (r *Manager) Start(ctx context.Context) error {
 	for roleName := range clusterRoles {
 		r.Log.Info("setting up ClusterRoles", "ClusterRole", roleName)
-		if err := r.EnsureClusterRole(roleName); err != nil {
-			if errors.IsAlreadyExists(err) {
+
+		if err := r.EnsureClusterRole(ctx, roleName); err != nil {
+			if apierrors.IsAlreadyExists(err) {
 				continue
 			}
 
@@ -180,8 +157,9 @@ func (r *Manager) Start(ctx context.Context) error {
 	}
 
 	r.Log.Info("setting up ClusterRoleBindings")
-	if err := r.EnsureClusterRoleBindings(); err != nil {
-		if errors.IsAlreadyExists(err) {
+
+	if err := r.EnsureClusterRoleBindings(ctx); err != nil {
+		if apierrors.IsAlreadyExists(err) {
 			return nil
 		}
 

controllers/secret/ca.go

@@ -1,212 +0,0 @@
-// Copyright 2020-2021 Clastix Labs
-// SPDX-License-Identifier: Apache-2.0
-
-package secret
-
-import (
-	"bytes"
-	"context"
-	"errors"
-	"time"
-
-	"github.com/go-logr/logr"
-	"golang.org/x/sync/errgroup"
-	admissionregistrationv1 "k8s.io/api/admissionregistration/v1"
-	corev1 "k8s.io/api/core/v1"
-	apiextensionsv1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1"
-	"k8s.io/apimachinery/pkg/runtime"
-	"k8s.io/apimachinery/pkg/types"
-	"k8s.io/client-go/util/retry"
-	"k8s.io/utils/pointer"
-	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/reconcile"
-
-	"github.com/clastix/capsule/pkg/cert"
-)
-
-type CAReconciler struct {
-	client.Client
-	Log       logr.Logger
-	Scheme    *runtime.Scheme
-	Namespace string
-}
-
-func (r *CAReconciler) SetupWithManager(mgr ctrl.Manager) error {
-	return ctrl.NewControllerManagedBy(mgr).
-		For(&corev1.Secret{}, forOptionPerInstanceName(caSecretName)).
-		Complete(r)
-}
-
-// By default helm doesn't allow to use templates in CRD (https://helm.sh/docs/chart_best_practices/custom_resource_definitions/#method-1-let-helm-do-it-for-you).
-// In order to overcome this, we are setting conversion strategy in helm chart to None, and then update it with CA and namespace information.
-func (r *CAReconciler) UpdateCustomResourceDefinition(caBundle []byte) error {
-	return retry.RetryOnConflict(retry.DefaultBackoff, func() (err error) {
-		crd := &apiextensionsv1.CustomResourceDefinition{}
-		err = r.Get(context.TODO(), types.NamespacedName{Name: "tenants.capsule.clastix.io"}, crd)
-		if err != nil {
-			r.Log.Error(err, "cannot retrieve CustomResourceDefinition")
-			return err
-		}
-
-		_, err = controllerutil.CreateOrUpdate(context.TODO(), r.Client, crd, func() error {
-			crd.Spec.Conversion = &apiextensionsv1.CustomResourceConversion{
-				Strategy: "Webhook",
-				Webhook: &apiextensionsv1.WebhookConversion{
-					ClientConfig: &apiextensionsv1.WebhookClientConfig{
-						Service: &apiextensionsv1.ServiceReference{
-							Namespace: r.Namespace,
-							Name:      "capsule-webhook-service",
-							Path:      pointer.StringPtr("/convert"),
-							Port:      pointer.Int32Ptr(443),
-						},
-						CABundle: caBundle,
-					},
-					ConversionReviewVersions: []string{"v1alpha1", "v1beta1"},
-				},
-			}
-
-			return nil
-		})
-
-		return err
-	})
-}
-
-//nolint:dupl
-func (r CAReconciler) UpdateValidatingWebhookConfiguration(caBundle []byte) error {
-	return retry.RetryOnConflict(retry.DefaultBackoff, func() (err error) {
-		vw := &admissionregistrationv1.ValidatingWebhookConfiguration{}
-		err = r.Get(context.TODO(), types.NamespacedName{Name: "capsule-validating-webhook-configuration"}, vw)
-		if err != nil {
-			r.Log.Error(err, "cannot retrieve ValidatingWebhookConfiguration")
-			return err
-		}
-		for i, w := range vw.Webhooks {
-			// Updating CABundle only in case of an internal service reference
-			if w.ClientConfig.Service != nil {
-				vw.Webhooks[i].ClientConfig.CABundle = caBundle
-			}
-		}
-		return r.Update(context.TODO(), vw, &client.UpdateOptions{})
-	})
-}
-
-//nolint:dupl
-func (r CAReconciler) UpdateMutatingWebhookConfiguration(caBundle []byte) error {
-	return retry.RetryOnConflict(retry.DefaultBackoff, func() (err error) {
-		mw := &admissionregistrationv1.MutatingWebhookConfiguration{}
-		err = r.Get(context.TODO(), types.NamespacedName{Name: "capsule-mutating-webhook-configuration"}, mw)
-		if err != nil {
-			r.Log.Error(err, "cannot retrieve MutatingWebhookConfiguration")
-			return err
-		}
-		for i, w := range mw.Webhooks {
-			// Updating CABundle only in case of an internal service reference
-			if w.ClientConfig.Service != nil {
-				mw.Webhooks[i].ClientConfig.CABundle = caBundle
-			}
-		}
-		return r.Update(context.TODO(), mw, &client.UpdateOptions{})
-	})
-}
-
-func (r CAReconciler) Reconcile(ctx context.Context, request ctrl.Request) (ctrl.Result, error) {
-	var err error
-
-	r.Log = r.Log.WithValues("Request.Namespace", request.Namespace, "Request.Name", request.Name)
-	r.Log.Info("Reconciling CA Secret")
-
-	// Fetch the CA instance
-	instance := &corev1.Secret{}
-	err = r.Client.Get(context.TODO(), request.NamespacedName, instance)
-	if err != nil {
-		// Error reading the object - requeue the request.
-		return reconcile.Result{}, err
-	}
-
-	var ca cert.CA
-	var rq time.Duration
-	ca, err = getCertificateAuthority(r.Client, r.Namespace)
-	if err != nil && errors.Is(err, MissingCaError{}) {
-		ca, err = cert.GenerateCertificateAuthority()
-		if err != nil {
-			return reconcile.Result{}, err
-		}
-	} else if err != nil {
-		return reconcile.Result{}, err
-	}
-
-	r.Log.Info("Handling CA Secret")
-
-	rq, err = ca.ExpiresIn(time.Now())
-	if err != nil {
-		r.Log.Info("CA is expired, cleaning to obtain a new one")
-		instance.Data = map[string][]byte{}
-	} else {
-		r.Log.Info("Updating CA secret with new PEM and RSA")
-
-		var crt *bytes.Buffer
-		var key *bytes.Buffer
-		crt, _ = ca.CACertificatePem()
-		key, _ = ca.CAPrivateKeyPem()
-
-		instance.Data = map[string][]byte{
-			certSecretKey:       crt.Bytes(),
-			privateKeySecretKey: key.Bytes(),
-		}
-
-		group := new(errgroup.Group)
-		group.Go(func() error {
-			return r.UpdateMutatingWebhookConfiguration(crt.Bytes())
-		})
-		group.Go(func() error {
-			return r.UpdateValidatingWebhookConfiguration(crt.Bytes())
-		})
-		group.Go(func() error {
-			return r.UpdateCustomResourceDefinition(crt.Bytes())
-		})
-
-		if err = group.Wait(); err != nil {
-			return reconcile.Result{}, err
-		}
-	}
-
-	var res controllerutil.OperationResult
-	t := &corev1.Secret{ObjectMeta: instance.ObjectMeta}
-	res, err = controllerutil.CreateOrUpdate(context.TODO(), r.Client, t, func() error {
-		t.Data = instance.Data
-		return nil
-	})
-	if err != nil {
-		r.Log.Error(err, "cannot update Capsule TLS")
-		return reconcile.Result{}, err
-	}
-
-	if res == controllerutil.OperationResultUpdated {
-		r.Log.Info("Capsule CA has been updated, we need to trigger TLS update too")
-		tls := &corev1.Secret{}
-		err = r.Get(ctx, types.NamespacedName{
-			Namespace: r.Namespace,
-			Name:      tlsSecretName,
-		}, tls)
-		if err != nil {
-			r.Log.Error(err, "Capsule TLS Secret missing")
-		}
-		err = retry.RetryOnConflict(retry.DefaultBackoff, func() error {
-			_, err = controllerutil.CreateOrUpdate(ctx, r.Client, tls, func() error {
-				tls.Data = map[string][]byte{}
-				return nil
-			})
-			return err
-		})
-		if err != nil {
-			r.Log.Error(err, "Cannot clean Capsule TLS Secret due to CA update")
-			return reconcile.Result{}, err
-		}
-	}
-
-	r.Log.Info("Reconciliation completed, processing back in " + rq.String())
-	return reconcile.Result{Requeue: true, RequeueAfter: rq}, nil
-}

controllers/secret/const.go

@@ -1,12 +0,0 @@
-// Copyright 2020-2021 Clastix Labs
-// SPDX-License-Identifier: Apache-2.0
-
-package secret
-
-const (
-	certSecretKey       = "tls.crt"
-	privateKeySecretKey = "tls.key"
-
-	caSecretName  = "capsule-ca"
-	tlsSecretName = "capsule-tls"
-)

controllers/secret/errors.go

@@ -1,11 +0,0 @@
-// Copyright 2020-2021 Clastix Labs
-// SPDX-License-Identifier: Apache-2.0
-
-package secret
-
-type MissingCaError struct {
-}
-
-func (MissingCaError) Error() string {
-	return "CA has not been created yet, please generate a new"
-}

controllers/secret/reconciler.go

@@ -1,62 +0,0 @@
-// Copyright 2020-2021 Clastix Labs
-// SPDX-License-Identifier: Apache-2.0
-
-package secret
-
-import (
-	"context"
-	"fmt"
-
-	corev1 "k8s.io/api/core/v1"
-	"k8s.io/apimachinery/pkg/types"
-	"sigs.k8s.io/controller-runtime/pkg/builder"
-	"sigs.k8s.io/controller-runtime/pkg/client"
-	"sigs.k8s.io/controller-runtime/pkg/event"
-	"sigs.k8s.io/controller-runtime/pkg/predicate"
-
-	"github.com/clastix/capsule/pkg/cert"
-)
-
-func getCertificateAuthority(client client.Client, namespace string) (ca cert.CA, err error) {
-	instance := &corev1.Secret{}
-
-	err = client.Get(context.TODO(), types.NamespacedName{
-		Namespace: namespace,
-		Name:      caSecretName,
-	}, instance)
-	if err != nil {
-		return nil, fmt.Errorf("missing secret %s, cannot reconcile", caSecretName)
-	}
-
-	if instance.Data == nil {
-		return nil, MissingCaError{}
-	}
-
-	ca, err = cert.NewCertificateAuthorityFromBytes(instance.Data[certSecretKey], instance.Data[privateKeySecretKey])
-	if err != nil {
-		return
-	}
-
-	return
-}
-
-func forOptionPerInstanceName(instanceName string) builder.ForOption {
-	return builder.WithPredicates(predicate.Funcs{
-		CreateFunc: func(event event.CreateEvent) bool {
-			return filterByName(event.Object.GetName(), instanceName)
-		},
-		DeleteFunc: func(deleteEvent event.DeleteEvent) bool {
-			return filterByName(deleteEvent.Object.GetName(), instanceName)
-		},
-		UpdateFunc: func(updateEvent event.UpdateEvent) bool {
-			return filterByName(updateEvent.ObjectNew.GetName(), instanceName)
-		},
-		GenericFunc: func(genericEvent event.GenericEvent) bool {
-			return filterByName(genericEvent.Object.GetName(), instanceName)
-		},
-	})
-}
-
-func filterByName(objName, desired string) bool {
-	return objName == desired
-}

controllers/secret/tls.go

@@ -1,152 +0,0 @@
-// Copyright 2020-2021 Clastix Labs
-// SPDX-License-Identifier: Apache-2.0
-
-package secret
-
-import (
-	"bytes"
-	"context"
-	"crypto/x509"
-	"encoding/pem"
-	"fmt"
-	"os"
-	"time"
-
-	"github.com/go-logr/logr"
-	corev1 "k8s.io/api/core/v1"
-	"k8s.io/apimachinery/pkg/runtime"
-	"k8s.io/apimachinery/pkg/types"
-	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/reconcile"
-
-	"github.com/clastix/capsule/pkg/cert"
-)
-
-type TLSReconciler struct {
-	client.Client
-	Log       logr.Logger
-	Scheme    *runtime.Scheme
-	Namespace string
-}
-
-func (r *TLSReconciler) SetupWithManager(mgr ctrl.Manager) error {
-	return ctrl.NewControllerManagedBy(mgr).
-		For(&corev1.Secret{}, forOptionPerInstanceName(tlsSecretName)).
-		Complete(r)
-}
-
-func (r TLSReconciler) Reconcile(ctx context.Context, request ctrl.Request) (ctrl.Result, error) {
-	var err error
-
-	r.Log = r.Log.WithValues("Request.Namespace", request.Namespace, "Request.Name", request.Name)
-	r.Log.Info("Reconciling TLS Secret")
-
-	// Fetch the Secret instance
-	instance := &corev1.Secret{}
-	err = r.Get(ctx, request.NamespacedName, instance)
-	if err != nil {
-		// Error reading the object - requeue the request.
-		return reconcile.Result{}, err
-	}
-
-	var ca cert.CA
-	var rq time.Duration
-
-	ca, err = getCertificateAuthority(r.Client, r.Namespace)
-	if err != nil {
-		return reconcile.Result{}, err
-	}
-
-	var shouldCreate bool
-	for _, key := range []string{certSecretKey, privateKeySecretKey} {
-		if _, ok := instance.Data[key]; !ok {
-			shouldCreate = true
-			break
-		}
-	}
-
-	if shouldCreate {
-		r.Log.Info("Missing Capsule TLS certificate")
-		rq = 6 * 30 * 24 * time.Hour
-
-		opts := cert.NewCertOpts(time.Now().Add(rq), fmt.Sprintf("capsule-webhook-service.%s.svc", r.Namespace))
-		var crt, key *bytes.Buffer
-		crt, key, err = ca.GenerateCertificate(opts)
-		if err != nil {
-			r.Log.Error(err, "Cannot generate new TLS certificate")
-			return reconcile.Result{}, err
-		}
-		instance.Data = map[string][]byte{
-			certSecretKey:       crt.Bytes(),
-			privateKeySecretKey: key.Bytes(),
-		}
-	} else {
-		var c *x509.Certificate
-		var b *pem.Block
-		b, _ = pem.Decode(instance.Data[certSecretKey])
-		c, err = x509.ParseCertificate(b.Bytes)
-		if err != nil {
-			r.Log.Error(err, "cannot parse Capsule TLS")
-			return reconcile.Result{}, err
-		}
-
-		rq = time.Until(c.NotAfter)
-
-		err = ca.ValidateCert(c)
-		if err != nil {
-			r.Log.Info("Capsule TLS is expired or invalid, cleaning to obtain a new one")
-			instance.Data = map[string][]byte{}
-		}
-	}
-
-	var res controllerutil.OperationResult
-	t := &corev1.Secret{ObjectMeta: instance.ObjectMeta}
-	res, err = controllerutil.CreateOrUpdate(ctx, r.Client, t, func() error {
-		t.Data = instance.Data
-		return nil
-	})
-	if err != nil {
-		r.Log.Error(err, "cannot update Capsule TLS")
-		return reconcile.Result{}, err
-	}
-
-	if instance.Name == tlsSecretName && res == controllerutil.OperationResultUpdated {
-		r.Log.Info("Capsule TLS certificates has been updated, Controller pods must be restarted to load new certificate")
-
-		hostname, _ := os.Hostname()
-		leaderPod := &corev1.Pod{}
-		if err = r.Client.Get(ctx, types.NamespacedName{Namespace: os.Getenv("NAMESPACE"), Name: hostname}, leaderPod); err != nil {
-			r.Log.Error(err, "cannot retrieve the leader Pod, probably running in out of the cluster mode")
-
-			return reconcile.Result{}, nil
-		}
-
-		podList := &corev1.PodList{}
-		if err = r.Client.List(ctx, podList, client.MatchingLabels(leaderPod.ObjectMeta.Labels)); err != nil {
-			r.Log.Error(err, "cannot retrieve list of Capsule pods requiring restart upon TLS update")
-
-			return reconcile.Result{}, nil
-		}
-
-		for _, p := range podList.Items {
-			nonLeaderPod := p
-			// Skipping this Pod, must be deleted at the end
-			if nonLeaderPod.GetName() == leaderPod.GetName() {
-				continue
-			}
-
-			if err = r.Client.Delete(ctx, &nonLeaderPod); err != nil {
-				r.Log.Error(err, "cannot delete the non-leader Pod due to TLS update")
-			}
-		}
-
-		if err = r.Client.Delete(ctx, leaderPod); err != nil {
-			r.Log.Error(err, "cannot delete the leader Pod due to TLS update")
-		}
-	}
-
-	r.Log.Info("Reconciliation completed, processing back in " + rq.String())
-	return reconcile.Result{Requeue: true, RequeueAfter: rq}, nil
-}

controllers/servicelabels/abstract.go

@@ -8,15 +8,15 @@ import (
 	"fmt"
 
 	"github.com/go-logr/logr"
+	"github.com/pkg/errors"
 	corev1 "k8s.io/api/core/v1"
+	apierr "k8s.io/apimachinery/pkg/api/errors"
 	"k8s.io/apimachinery/pkg/fields"
-	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apimachinery/pkg/types"
 	ctrl "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/controllerutil"
-	"sigs.k8s.io/controller-runtime/pkg/event"
 	"sigs.k8s.io/controller-runtime/pkg/predicate"
 	"sigs.k8s.io/controller-runtime/pkg/reconcile"
 
@@ -27,34 +27,39 @@ type abstractServiceLabelsReconciler struct {
 	obj    client.Object
 	client client.Client
 	log    logr.Logger
-	scheme *runtime.Scheme
 }
 
 func (r *abstractServiceLabelsReconciler) InjectClient(c client.Client) error {
 	r.client = c
+
 	return nil
 }
 
 func (r *abstractServiceLabelsReconciler) Reconcile(ctx context.Context, request ctrl.Request) (ctrl.Result, error) {
 	tenant, err := r.getTenant(ctx, request.NamespacedName, r.client)
 	if err != nil {
-		switch err.(type) {
-		case *NonTenantObject, *NoServicesMetadata:
+		if errors.As(err, &NonTenantObjectError{}) || errors.As(err, &NoServicesMetadataError{}) {
 			return reconcile.Result{}, nil
-		default:
-			r.log.Error(err, fmt.Sprintf("Cannot sync %t labels", r.obj))
-			return reconcile.Result{}, err
 		}
+
+		r.log.Error(err, fmt.Sprintf("Cannot sync %T %s/%s labels", r.obj, r.obj.GetNamespace(), r.obj.GetName()))
+
+		return reconcile.Result{}, err
 	}
 
 	err = r.client.Get(ctx, request.NamespacedName, r.obj)
 	if err != nil {
+		if apierr.IsNotFound(err) {
+			return reconcile.Result{}, nil
+		}
+
 		return reconcile.Result{}, err
 	}
 
 	_, err = controllerutil.CreateOrUpdate(ctx, r.client, r.obj, func() (err error) {
 		r.obj.SetLabels(r.sync(r.obj.GetLabels(), tenant.Spec.ServiceOptions.AdditionalMetadata.Labels))
 		r.obj.SetAnnotations(r.sync(r.obj.GetAnnotations(), tenant.Spec.ServiceOptions.AdditionalMetadata.Annotations))
+
 		return nil
 	})
 
@@ -97,32 +102,23 @@ func (r *abstractServiceLabelsReconciler) sync(available map[string]string, tena
 			}
 		}
 	}
+
 	return available
 }
 
-func (r *abstractServiceLabelsReconciler) forOptionPerInstanceName() builder.ForOption {
-	return builder.WithPredicates(predicate.Funcs{
-		CreateFunc: func(event event.CreateEvent) bool {
-			return r.IsNamespaceInTenant(event.Object.GetNamespace())
-		},
-		DeleteFunc: func(deleteEvent event.DeleteEvent) bool {
-			return r.IsNamespaceInTenant(deleteEvent.Object.GetNamespace())
-		},
-		UpdateFunc: func(updateEvent event.UpdateEvent) bool {
-			return r.IsNamespaceInTenant(updateEvent.ObjectNew.GetNamespace())
-		},
-		GenericFunc: func(genericEvent event.GenericEvent) bool {
-			return r.IsNamespaceInTenant(genericEvent.Object.GetNamespace())
-		},
-	})
+func (r *abstractServiceLabelsReconciler) forOptionPerInstanceName(ctx context.Context) builder.ForOption {
+	return builder.WithPredicates(predicate.NewPredicateFuncs(func(object client.Object) bool {
+		return r.IsNamespaceInTenant(ctx, object.GetNamespace())
+	}))
 }
 
-func (r *abstractServiceLabelsReconciler) IsNamespaceInTenant(namespace string) bool {
+func (r *abstractServiceLabelsReconciler) IsNamespaceInTenant(ctx context.Context, namespace string) bool {
 	tl := &capsulev1beta1.TenantList{}
-	if err := r.client.List(context.Background(), tl, client.MatchingFieldsSelector{
+	if err := r.client.List(ctx, tl, client.MatchingFieldsSelector{
 		Selector: fields.OneTermEqualSelector(".status.namespaces", namespace),
 	}); err != nil {
 		return false
 	}
+
 	return len(tl.Items) > 0
 }

controllers/servicelabels/endpoint.go

@@ -4,6 +4,8 @@
 package servicelabels
 
 import (
+	"context"
+
 	"github.com/go-logr/logr"
 	corev1 "k8s.io/api/core/v1"
 	ctrl "sigs.k8s.io/controller-runtime"
@@ -15,14 +17,13 @@ type EndpointsLabelsReconciler struct {
 	Log logr.Logger
 }
 
-func (r *EndpointsLabelsReconciler) SetupWithManager(mgr ctrl.Manager) error {
+func (r *EndpointsLabelsReconciler) SetupWithManager(ctx context.Context, mgr ctrl.Manager) error {
 	r.abstractServiceLabelsReconciler = abstractServiceLabelsReconciler{
-		obj:    &corev1.Endpoints{},
-		scheme: mgr.GetScheme(),
-		log:    r.Log,
+		obj: &corev1.Endpoints{},
+		log: r.Log,
 	}
 
 	return ctrl.NewControllerManagedBy(mgr).
-		For(r.abstractServiceLabelsReconciler.obj, r.abstractServiceLabelsReconciler.forOptionPerInstanceName()).
+		For(r.abstractServiceLabelsReconciler.obj, r.abstractServiceLabelsReconciler.forOptionPerInstanceName(ctx)).
 		Complete(r)
 }

controllers/servicelabels/endpoint_slices.go

@@ -4,6 +4,8 @@
 package servicelabels
 
 import (
+	"context"
+
 	"github.com/go-logr/logr"
 	discoveryv1 "k8s.io/api/discovery/v1"
 	discoveryv1beta1 "k8s.io/api/discovery/v1beta1"
@@ -14,20 +16,19 @@ type EndpointSlicesLabelsReconciler struct {
 	abstractServiceLabelsReconciler
 
 	Log          logr.Logger
-	VersionMinor int
-	VersionMajor int
+	VersionMinor uint
+	VersionMajor uint
 }
 
-func (r *EndpointSlicesLabelsReconciler) SetupWithManager(mgr ctrl.Manager) error {
-	r.scheme = mgr.GetScheme()
+func (r *EndpointSlicesLabelsReconciler) SetupWithManager(ctx context.Context, mgr ctrl.Manager) error {
 	r.abstractServiceLabelsReconciler = abstractServiceLabelsReconciler{
-		scheme: mgr.GetScheme(),
-		log:    r.Log,
+		log: r.Log,
 	}
 
 	switch {
 	case r.VersionMajor == 1 && r.VersionMinor <= 16:
 		r.Log.Info("Skipping controller setup, as EndpointSlices are not supported on current kubernetes version", "VersionMajor", r.VersionMajor, "VersionMinor", r.VersionMinor)
+
 		return nil
 	case r.VersionMajor == 1 && r.VersionMinor >= 21:
 		r.abstractServiceLabelsReconciler.obj = &discoveryv1.EndpointSlice{}
@@ -36,6 +37,6 @@ func (r *EndpointSlicesLabelsReconciler) SetupWithManager(mgr ctrl.Manager) erro
 	}
 
 	return ctrl.NewControllerManagedBy(mgr).
-		For(r.obj, r.abstractServiceLabelsReconciler.forOptionPerInstanceName()).
+		For(r.obj, r.abstractServiceLabelsReconciler.forOptionPerInstanceName(ctx)).
 		Complete(r)
 }

controllers/servicelabels/errors.go

@@ -5,26 +5,26 @@ package servicelabels
 
 import "fmt"
 
-type NonTenantObject struct {
+type NonTenantObjectError struct {
 	objectName string
 }
 
 func NewNonTenantObject(objectName string) error {
-	return &NonTenantObject{objectName: objectName}
+	return &NonTenantObjectError{objectName: objectName}
 }
 
-func (n NonTenantObject) Error() string {
+func (n NonTenantObjectError) Error() string {
 	return fmt.Sprintf("Skipping labels sync for %s as it doesn't belong to tenant", n.objectName)
 }
 
-type NoServicesMetadata struct {
+type NoServicesMetadataError struct {
 	objectName string
 }
 
 func NewNoServicesMetadata(objectName string) error {
-	return &NoServicesMetadata{objectName: objectName}
+	return &NoServicesMetadataError{objectName: objectName}
 }
 
-func (n NoServicesMetadata) Error() string {
+func (n NoServicesMetadataError) Error() string {
 	return fmt.Sprintf("Skipping labels sync for %s because no AdditionalLabels or AdditionalAnnotations presents in Tenant spec", n.objectName)
 }

controllers/servicelabels/service.go

@@ -4,6 +4,8 @@
 package servicelabels
 
 import (
+	"context"
+
 	"github.com/go-logr/logr"
 	corev1 "k8s.io/api/core/v1"
 	ctrl "sigs.k8s.io/controller-runtime"
@@ -15,13 +17,13 @@ type ServicesLabelsReconciler struct {
 	Log logr.Logger
 }
 
-func (r *ServicesLabelsReconciler) SetupWithManager(mgr ctrl.Manager) error {
+func (r *ServicesLabelsReconciler) SetupWithManager(ctx context.Context, mgr ctrl.Manager) error {
 	r.abstractServiceLabelsReconciler = abstractServiceLabelsReconciler{
-		obj:    &corev1.Service{},
-		scheme: mgr.GetScheme(),
-		log:    r.Log,
+		obj: &corev1.Service{},
+		log: r.Log,
 	}
+
 	return ctrl.NewControllerManagedBy(mgr).
-		For(r.abstractServiceLabelsReconciler.obj, r.abstractServiceLabelsReconciler.forOptionPerInstanceName()).
+		For(r.abstractServiceLabelsReconciler.obj, r.abstractServiceLabelsReconciler.forOptionPerInstanceName(ctx)).
 		Complete(r)
 }

controllers/tenant/clusterrolebindings.go

@@ -0,0 +1,119 @@
+package tenant
+
+import (
+	"context"
+	"fmt"
+	"hash/fnv"
+
+	"golang.org/x/sync/errgroup"
+	rbacv1 "k8s.io/api/rbac/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"sigs.k8s.io/controller-runtime/pkg/controller/controllerutil"
+
+	capsulev1beta1 "github.com/clastix/capsule/api/v1beta1"
+)
+
+// Sync the dynamic Tenant Owner specific cluster-roles and additional ClusterRole Bindings, which can be used in many ways:
+// applying Pod Security Policies or giving access to CRDs or specific API groups.
+func (r *Manager) syncClusterRoleBindings(ctx context.Context, tenant *capsulev1beta1.Tenant) (err error) {
+	// hashing the ClusterRoleBinding name due to DNS RFC-1123 applied to Kubernetes labels
+	hashFn := func(binding capsulev1beta1.AdditionalRoleBindingsSpec) string {
+		h := fnv.New64a()
+
+		_, _ = h.Write([]byte(binding.ClusterRoleName))
+
+		for _, sub := range binding.Subjects {
+			_, _ = h.Write([]byte(sub.Kind + sub.Name))
+		}
+
+		return fmt.Sprintf("%x", h.Sum64())
+	}
+	// getting requested Role Binding keys
+	keys := make([]string, 0, len(tenant.Spec.Owners))
+	// Generating for dynamic tenant owners cluster roles
+	for _, owner := range tenant.Spec.Owners {
+		for _, clusterRoleName := range owner.GetClusterRoles(*tenant) {
+
+			cr := r.ownerClusterRoleBindings(owner, clusterRoleName)
+
+			keys = append(keys, hashFn(cr))
+		}
+	}
+
+	group := new(errgroup.Group)
+
+	group.Go(func() error {
+		return r.syncClusterRoleBinding(ctx, tenant, keys, hashFn)
+	})
+
+	return group.Wait()
+}
+
+func (r *Manager) syncClusterRoleBinding(ctx context.Context, tenant *capsulev1beta1.Tenant, keys []string, hashFn func(binding capsulev1beta1.AdditionalRoleBindingsSpec) string) (err error) {
+
+	var tenantLabel string
+
+	var clusterRoleBindingLabel string
+
+	if tenantLabel, err = capsulev1beta1.GetTypeLabel(&capsulev1beta1.Tenant{}); err != nil {
+		return
+	}
+
+	if clusterRoleBindingLabel, err = capsulev1beta1.GetTypeLabel(&rbacv1.ClusterRoleBinding{}); err != nil {
+		return
+	}
+
+	if err = r.pruningClusterResources(ctx, keys, &rbacv1.ClusterRoleBinding{}); err != nil {
+		return
+	}
+
+	var clusterRoleBindings []capsulev1beta1.AdditionalRoleBindingsSpec
+
+	for _, owner := range tenant.Spec.Owners {
+		for _, clusterRoleName := range owner.GetClusterRoles(*tenant) {
+			clusterRoleBindings = append(clusterRoleBindings, r.ownerClusterRoleBindings(owner, clusterRoleName))
+		}
+	}
+
+	for i, clusterRoleBinding := range clusterRoleBindings {
+
+		clusterRoleBindingHashLabel := hashFn(clusterRoleBinding)
+
+		target := &rbacv1.ClusterRoleBinding{
+			ObjectMeta: metav1.ObjectMeta{
+				Name: fmt.Sprintf("capsule-%s-%d-%s", tenant.Name, i, clusterRoleBinding.ClusterRoleName),
+			},
+		}
+
+		var res controllerutil.OperationResult
+		res, err = controllerutil.CreateOrUpdate(ctx, r.Client, target, func() error {
+			target.ObjectMeta.Labels = map[string]string{
+				tenantLabel:             tenant.Name,
+				clusterRoleBindingLabel: clusterRoleBindingHashLabel,
+			}
+			target.RoleRef = rbacv1.RoleRef{
+				APIGroup: rbacv1.GroupName,
+				Kind:     "ClusterRole",
+				Name:     clusterRoleBinding.ClusterRoleName,
+			}
+			target.Subjects = clusterRoleBinding.Subjects
+
+			return controllerutil.SetControllerReference(tenant, target, r.Client.Scheme())
+		})
+
+		// TODO: find appropriate event Namespace.
+		r.emitEvent(tenant, target.GetNamespace(), res, fmt.Sprintf("Ensuring ClusterRoleBinding %s", target.GetName()), err)
+
+		if err != nil {
+			r.Log.Error(err, "Cannot sync ClusterRoleBinding")
+		}
+
+		r.Log.Info(fmt.Sprintf("ClusterRoleBinding sync result: %s", string(res)), "name", target.Name, "namespace", target.Namespace)
+
+		if err != nil {
+			return
+		}
+	}
+
+	return nil
+}

controllers/tenant/clusterroles.go

@@ -0,0 +1,66 @@
+package tenant
+
+import (
+	"context"
+
+	rbacv1 "k8s.io/api/rbac/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"sigs.k8s.io/controller-runtime/pkg/controller/controllerutil"
+
+	capsulev1beta1 "github.com/clastix/capsule/api/v1beta1"
+)
+
+const (
+	ImpersonatorRoleName = "capsule-tenant-impersonator"
+)
+
+// Sync the Tenant Owner specific cluster-roles.
+// When the Tenant is configured GitOpsReady additional (Cluster)Roles are created, then bound.
+func (r *Manager) syncClusterRoles(ctx context.Context, tenant *capsulev1beta1.Tenant) (err error) {
+
+	// If the Tenant will be reconciled the GitOps-way,
+	// Tenant Owners might be machine GitOps reconciler identities.
+	if tenant.Spec.GitOpsReady {
+		for _, owner := range tenant.Spec.Owners {
+			if err = r.ensureOwnerClusterRole(ctx, tenant, &owner, ImpersonatorRoleName); err != nil {
+				r.Log.Error(err, "Reconciliation for ClusterRole failed", "ClusterRole", ImpersonatorRoleName)
+				return err
+			}
+		}
+	}
+
+	return
+}
+
+func (r *Manager) ensureOwnerClusterRole(ctx context.Context, tenant *capsulev1beta1.Tenant, owner *capsulev1beta1.OwnerSpec, roleName string) (err error) {
+	switch roleName {
+	case ImpersonatorRoleName:
+		clusterRole := &rbacv1.ClusterRole{
+			ObjectMeta: metav1.ObjectMeta{
+				Name: roleName + "-" + tenant.Name + "-" + owner.Name,
+			},
+		}
+
+		resource := "users"
+		if owner.Kind == capsulev1beta1.GroupOwner {
+			resource = "groups"
+		}
+
+		resourceName := owner.Name
+
+		_, err = controllerutil.CreateOrUpdate(ctx, r.Client, clusterRole, func() error {
+			clusterRole.Rules = []rbacv1.PolicyRule{
+				{
+					APIGroups:     []string{""},
+					Resources:     []string{resource},
+					Verbs:         []string{"impersonate"},
+					ResourceNames: []string{resourceName},
+				},
+			}
+
+			return nil
+		})
+	}
+
+	return
+}

controllers/tenant/limitranges.go

@@ -13,8 +13,9 @@ import (
 	capsulev1beta1 "github.com/clastix/capsule/api/v1beta1"
 )
 
+// nolint:dupl
 // Ensuring all the LimitRange are applied to each Namespace handled by the Tenant.
-func (r *Manager) syncLimitRanges(tenant *capsulev1beta1.Tenant) error {
+func (r *Manager) syncLimitRanges(ctx context.Context, tenant *capsulev1beta1.Tenant) error {
 	// getting requested LimitRange keys
 	keys := make([]string, 0, len(tenant.Spec.LimitRanges.Items))
 
@@ -28,26 +29,27 @@ func (r *Manager) syncLimitRanges(tenant *capsulev1beta1.Tenant) error {
 		namespace := ns
 
 		group.Go(func() error {
-			return r.syncLimitRange(tenant, namespace, keys)
+			return r.syncLimitRange(ctx, tenant, namespace, keys)
 		})
 	}
 
 	return group.Wait()
 }
 
-func (r *Manager) syncLimitRange(tenant *capsulev1beta1.Tenant, namespace string, keys []string) (err error) {
+func (r *Manager) syncLimitRange(ctx context.Context, tenant *capsulev1beta1.Tenant, namespace string, keys []string) (err error) {
 	// getting LimitRange labels for the mutateFn
 	var tenantLabel, limitRangeLabel string
 
 	if tenantLabel, err = capsulev1beta1.GetTypeLabel(&capsulev1beta1.Tenant{}); err != nil {
-		return
-	}
-	if limitRangeLabel, err = capsulev1beta1.GetTypeLabel(&corev1.LimitRange{}); err != nil {
-		return
+		return err
 	}
 
-	if err = r.pruningResources(namespace, keys, &corev1.LimitRange{}); err != nil {
-		return
+	if limitRangeLabel, err = capsulev1beta1.GetTypeLabel(&corev1.LimitRange{}); err != nil {
+		return err
+	}
+
+	if err = r.pruningResources(ctx, namespace, keys, &corev1.LimitRange{}); err != nil {
+		return err
 	}
 
 	for i, spec := range tenant.Spec.LimitRanges.Items {
@@ -59,22 +61,24 @@ func (r *Manager) syncLimitRange(tenant *capsulev1beta1.Tenant, namespace string
 		}
 
 		var res controllerutil.OperationResult
-		res, err = controllerutil.CreateOrUpdate(context.TODO(), r.Client, target, func() (err error) {
+		res, err = controllerutil.CreateOrUpdate(ctx, r.Client, target, func() (err error) {
 			target.ObjectMeta.Labels = map[string]string{
 				tenantLabel:     tenant.Name,
 				limitRangeLabel: strconv.Itoa(i),
 			}
 			target.Spec = spec
-			return controllerutil.SetControllerReference(tenant, target, r.Scheme)
+
+			return controllerutil.SetControllerReference(tenant, target, r.Client.Scheme())
 		})
 
 		r.emitEvent(tenant, target.GetNamespace(), res, fmt.Sprintf("Ensuring LimitRange %s", target.GetName()), err)
 
 		r.Log.Info("LimitRange sync result: "+string(res), "name", target.Name, "namespace", target.Namespace)
+
 		if err != nil {
-			return
+			return err
 		}
 	}
 
-	return
+	return nil
 }

controllers/tenant/manager.go

@@ -7,8 +7,8 @@ import (
 	corev1 "k8s.io/api/core/v1"
 	networkingv1 "k8s.io/api/networking/v1"
 	rbacv1 "k8s.io/api/rbac/v1"
-	"k8s.io/apimachinery/pkg/api/errors"
-	"k8s.io/apimachinery/pkg/runtime"
+	apierrors "k8s.io/apimachinery/pkg/api/errors"
+	"k8s.io/client-go/rest"
 	"k8s.io/client-go/tools/record"
 	"k8s.io/client-go/util/retry"
 	ctrl "sigs.k8s.io/controller-runtime"
@@ -20,9 +20,9 @@ import (
 
 type Manager struct {
 	client.Client
-	Log      logr.Logger
-	Scheme   *runtime.Scheme
-	Recorder record.EventRecorder
+	Log        logr.Logger
+	Recorder   record.EventRecorder
+	RESTConfig *rest.Config
 }
 
 func (r *Manager) SetupWithManager(mgr ctrl.Manager) error {
@@ -38,83 +38,112 @@ func (r *Manager) SetupWithManager(mgr ctrl.Manager) error {
 
 func (r Manager) Reconcile(ctx context.Context, request ctrl.Request) (result ctrl.Result, err error) {
 	r.Log = r.Log.WithValues("Request.Name", request.Name)
-
 	// Fetch the Tenant instance
 	instance := &capsulev1beta1.Tenant{}
 	if err = r.Get(ctx, request.NamespacedName, instance); err != nil {
-		if errors.IsNotFound(err) {
+		if apierrors.IsNotFound(err) {
 			r.Log.Info("Request object not found, could have been deleted after reconcile request")
+
 			return reconcile.Result{}, nil
 		}
+
 		r.Log.Error(err, "Error reading the object")
+
 		return
 	}
 	// Ensuring the Tenant Status
-	if err = r.updateTenantStatus(instance); err != nil {
+	if err = r.updateTenantStatus(ctx, instance); err != nil {
 		r.Log.Error(err, "Cannot update Tenant status")
+
 		return
 	}
+	// Ensuring ResourceQuota
+	r.Log.Info("Ensuring limit resources count is updated")
 
+	if err = r.syncCustomResourceQuotaUsages(ctx, instance); err != nil {
+		r.Log.Error(err, "Cannot count limited resources")
+
+		return
+	}
 	// Ensuring all namespaces are collected
 	r.Log.Info("Ensuring all Namespaces are collected")
-	if err = r.collectNamespaces(instance); err != nil {
+
+	if err = r.collectNamespaces(ctx, instance); err != nil {
 		r.Log.Error(err, "Cannot collect Namespace resources")
+
 		return
 	}
-
+	// Ensuring Namespace metadata
 	r.Log.Info("Starting processing of Namespaces", "items", len(instance.Status.Namespaces))
-	if err = r.syncNamespaces(instance); err != nil {
+
+	if err = r.syncNamespaces(ctx, instance); err != nil {
 		r.Log.Error(err, "Cannot sync Namespace items")
+
 		return
 	}
+	// Ensuring NetworkPolicy resources
+	r.Log.Info("Starting processing of Network Policies")
 
-	if instance.Spec.NetworkPolicies != nil {
-		r.Log.Info("Starting processing of Network Policies", "items", len(instance.Spec.NetworkPolicies.Items))
-		if err = r.syncNetworkPolicies(instance); err != nil {
-			r.Log.Error(err, "Cannot sync NetworkPolicy items")
-			return
-		}
-	}
+	if err = r.syncNetworkPolicies(ctx, instance); err != nil {
+		r.Log.Error(err, "Cannot sync NetworkPolicy items")
 
-	if instance.Spec.LimitRanges != nil {
-		r.Log.Info("Starting processing of Limit Ranges", "items", len(instance.Spec.LimitRanges.Items))
-		if err = r.syncLimitRanges(instance); err != nil {
-			r.Log.Error(err, "Cannot sync LimitRange items")
-			return
-		}
-	}
-
-	if instance.Spec.ResourceQuota != nil {
-		r.Log.Info("Starting processing of Resource Quotas", "items", len(instance.Spec.ResourceQuota.Items))
-		if err = r.syncResourceQuotas(instance); err != nil {
-			r.Log.Error(err, "Cannot sync ResourceQuota items")
-			return
-		}
-	}
-
-	r.Log.Info("Ensuring additional RoleBindings for owner")
-	if err = r.syncAdditionalRoleBindings(instance); err != nil {
-		r.Log.Error(err, "Cannot sync additional RoleBindings items")
 		return
 	}
+	// Ensuring LimitRange resources
+	r.Log.Info("Starting processing of Limit Ranges", "items", len(instance.Spec.LimitRanges.Items))
+
+	if err = r.syncLimitRanges(ctx, instance); err != nil {
+		r.Log.Error(err, "Cannot sync LimitRange items")
 
-	r.Log.Info("Ensuring RoleBinding for owner")
-	if err = r.ownerRoleBinding(instance); err != nil {
-		r.Log.Error(err, "Cannot sync owner RoleBinding")
 		return
 	}
+	// Ensuring ResourceQuota resources
+	r.Log.Info("Starting processing of Resource Quotas", "items", len(instance.Spec.ResourceQuota.Items))
 
+	if err = r.syncResourceQuotas(ctx, instance); err != nil {
+		r.Log.Error(err, "Cannot sync ResourceQuota items")
+
+		return
+	}
+	// Ensuring ClusterRoles resources
+	r.Log.Info("Ensuring ClusterRoles for Owners and Tenant")
+
+	if err = r.syncClusterRoles(ctx, instance); err != nil {
+		r.Log.Error(err, "Cannot sync ClusterRoles items")
+
+		return
+	}
+	// Ensuring ClusterRoleBindings resources
+	r.Log.Info("Ensuring ClusterRoleBindings for Owners and Tenant")
+
+	if err = r.syncClusterRoleBindings(ctx, instance); err != nil {
+		r.Log.Error(err, "Cannot sync ClusterRoleBindings items")
+
+		return
+	}
+	// Ensuring RoleBinding resources
+	r.Log.Info("Ensuring RoleBindings for Owners and Tenant")
+
+	if err = r.syncRoleBindings(ctx, instance); err != nil {
+		r.Log.Error(err, "Cannot sync RoleBindings items")
+
+		return
+	}
+	// Ensuring Namespace count
 	r.Log.Info("Ensuring Namespace count")
-	if err = r.ensureNamespaceCount(instance); err != nil {
+
+	if err = r.ensureNamespaceCount(ctx, instance); err != nil {
 		r.Log.Error(err, "Cannot sync Namespace count")
+
 		return
 	}
 
 	r.Log.Info("Tenant reconciling completed")
+
 	return ctrl.Result{}, err
 }
 
-func (r *Manager) updateTenantStatus(tnt *capsulev1beta1.Tenant) error {
+func (r *Manager) updateTenantStatus(ctx context.Context, tnt *capsulev1beta1.Tenant) error {
 	return retry.RetryOnConflict(retry.DefaultBackoff, func() (err error) {
 		if tnt.IsCordoned() {
 			tnt.Status.State = capsulev1beta1.TenantStateCordoned
@@ -122,6 +151,6 @@ func (r *Manager) updateTenantStatus(tnt *capsulev1beta1.Tenant) error {
 			tnt.Status.State = capsulev1beta1.TenantStateActive
 		}
 
-		return r.Client.Status().Update(context.Background(), tnt)
+		return r.Client.Status().Update(ctx, tnt)
 	})
 }

controllers/tenant/namespaces.go

@@ -20,37 +20,39 @@ import (
 )
 
 // Ensuring all annotations are applied to each Namespace handled by the Tenant.
-func (r *Manager) syncNamespaces(tenant *capsulev1beta1.Tenant) (err error) {
+func (r *Manager) syncNamespaces(ctx context.Context, tenant *capsulev1beta1.Tenant) (err error) {
 	group := new(errgroup.Group)
 
 	for _, item := range tenant.Status.Namespaces {
 		namespace := item
 
 		group.Go(func() error {
-			return r.syncNamespaceMetadata(namespace, tenant)
+			return r.syncNamespaceMetadata(ctx, namespace, tenant)
 		})
 	}
 
 	if err = group.Wait(); err != nil {
 		r.Log.Error(err, "Cannot sync Namespaces")
 
-		err = fmt.Errorf("cannot sync Namespaces: %s", err.Error())
+		err = fmt.Errorf("cannot sync Namespaces: %w", err)
 	}
+
 	return
 }
 
-func (r *Manager) syncNamespaceMetadata(namespace string, tnt *capsulev1beta1.Tenant) (err error) {
+// nolint:gocognit
+func (r *Manager) syncNamespaceMetadata(ctx context.Context, namespace string, tnt *capsulev1beta1.Tenant) (err error) {
 	var res controllerutil.OperationResult
 
 	err = retry.RetryOnConflict(retry.DefaultBackoff, func() (conflictErr error) {
 		ns := &corev1.Namespace{}
-		if conflictErr = r.Client.Get(context.TODO(), types.NamespacedName{Name: namespace}, ns); err != nil {
+		if conflictErr = r.Client.Get(ctx, types.NamespacedName{Name: namespace}, ns); err != nil {
 			return
 		}
 
 		capsuleLabel, _ := capsulev1beta1.GetTypeLabel(&capsulev1beta1.Tenant{})
 
-		res, conflictErr = controllerutil.CreateOrUpdate(context.TODO(), r.Client, ns, func() error {
+		res, conflictErr = controllerutil.CreateOrUpdate(ctx, r.Client, ns, func() error {
 			annotations := make(map[string]string)
 			labels := map[string]string{
 				"name":       namespace,
@@ -144,28 +146,28 @@ func (r *Manager) syncNamespaceMetadata(namespace string, tnt *capsulev1beta1.Te
 
 	r.emitEvent(tnt, namespace, res, "Ensuring Namespace metadata", err)
 
-	return
+	return err
 }
 
-func (r *Manager) ensureNamespaceCount(tenant *capsulev1beta1.Tenant) error {
+func (r *Manager) ensureNamespaceCount(ctx context.Context, tenant *capsulev1beta1.Tenant) error {
 	return retry.RetryOnConflict(retry.DefaultBackoff, func() error {
 		tenant.Status.Size = uint(len(tenant.Status.Namespaces))
 
 		found := &capsulev1beta1.Tenant{}
-		if err := r.Client.Get(context.TODO(), types.NamespacedName{Name: tenant.GetName()}, found); err != nil {
+		if err := r.Client.Get(ctx, types.NamespacedName{Name: tenant.GetName()}, found); err != nil {
 			return err
 		}
 
 		found.Status.Size = tenant.Status.Size
 
-		return r.Client.Status().Update(context.TODO(), found, &client.UpdateOptions{})
+		return r.Client.Status().Update(ctx, found, &client.UpdateOptions{})
 	})
 }
 
-func (r *Manager) collectNamespaces(tenant *capsulev1beta1.Tenant) error {
+func (r *Manager) collectNamespaces(ctx context.Context, tenant *capsulev1beta1.Tenant) error {
 	return retry.RetryOnConflict(retry.DefaultBackoff, func() (err error) {
 		list := &corev1.NamespaceList{}
-		err = r.Client.List(context.TODO(), list, client.MatchingFieldsSelector{
+		err = r.Client.List(ctx, list, client.MatchingFieldsSelector{
 			Selector: fields.OneTermEqualSelector(".metadata.ownerReferences[*].capsule", tenant.GetName()),
 		})
 
@@ -173,11 +175,12 @@ func (r *Manager) collectNamespaces(tenant *capsulev1beta1.Tenant) error {
 			return
 		}
 
-		_, err = controllerutil.CreateOrUpdate(context.TODO(), r.Client, tenant.DeepCopy(), func() error {
+		_, err = controllerutil.CreateOrUpdate(ctx, r.Client, tenant.DeepCopy(), func() error {
 			tenant.AssignNamespaces(list.Items)
 
-			return r.Client.Status().Update(context.TODO(), tenant, &client.UpdateOptions{})
+			return r.Client.Status().Update(ctx, tenant, &client.UpdateOptions{})
 		})
+
 		return
 	})
 }

controllers/tenant/networkpolicies.go

@@ -13,8 +13,9 @@ import (
 	capsulev1beta1 "github.com/clastix/capsule/api/v1beta1"
 )
 
+// nolint:dupl
 // Ensuring all the NetworkPolicies are applied to each Namespace handled by the Tenant.
-func (r *Manager) syncNetworkPolicies(tenant *capsulev1beta1.Tenant) error {
+func (r *Manager) syncNetworkPolicies(ctx context.Context, tenant *capsulev1beta1.Tenant) error {
 	// getting requested NetworkPolicy keys
 	keys := make([]string, 0, len(tenant.Spec.NetworkPolicies.Items))
 
@@ -28,26 +29,26 @@ func (r *Manager) syncNetworkPolicies(tenant *capsulev1beta1.Tenant) error {
 		namespace := ns
 
 		group.Go(func() error {
-			return r.syncNetworkPolicy(tenant, namespace, keys)
+			return r.syncNetworkPolicy(ctx, tenant, namespace, keys)
 		})
 	}
 
 	return group.Wait()
 }
 
-func (r *Manager) syncNetworkPolicy(tenant *capsulev1beta1.Tenant, namespace string, keys []string) (err error) {
-	if err = r.pruningResources(namespace, keys, &networkingv1.NetworkPolicy{}); err != nil {
-		return
+func (r *Manager) syncNetworkPolicy(ctx context.Context, tenant *capsulev1beta1.Tenant, namespace string, keys []string) (err error) {
+	if err = r.pruningResources(ctx, namespace, keys, &networkingv1.NetworkPolicy{}); err != nil {
+		return err
 	}
 	// getting NetworkPolicy labels for the mutateFn
 	var tenantLabel, networkPolicyLabel string
 
 	if tenantLabel, err = capsulev1beta1.GetTypeLabel(&capsulev1beta1.Tenant{}); err != nil {
-		return
+		return err
 	}
 
 	if networkPolicyLabel, err = capsulev1beta1.GetTypeLabel(&networkingv1.NetworkPolicy{}); err != nil {
-		return
+		return err
 	}
 
 	for i, spec := range tenant.Spec.NetworkPolicies.Items {
@@ -59,14 +60,14 @@ func (r *Manager) syncNetworkPolicy(tenant *capsulev1beta1.Tenant, namespace str
 		}
 
 		var res controllerutil.OperationResult
-		res, err = controllerutil.CreateOrUpdate(context.TODO(), r.Client, target, func() (err error) {
+		res, err = controllerutil.CreateOrUpdate(ctx, r.Client, target, func() (err error) {
 			target.SetLabels(map[string]string{
 				tenantLabel:        tenant.Name,
 				networkPolicyLabel: strconv.Itoa(i),
 			})
 			target.Spec = spec
 
-			return controllerutil.SetControllerReference(tenant, target, r.Scheme)
+			return controllerutil.SetControllerReference(tenant, target, r.Client.Scheme())
 		})
 
 		r.emitEvent(tenant, target.GetNamespace(), res, fmt.Sprintf("Ensuring NetworkPolicy %s", target.GetName()), err)
@@ -74,9 +75,9 @@ func (r *Manager) syncNetworkPolicy(tenant *capsulev1beta1.Tenant, namespace str
 		r.Log.Info("Network Policy sync result: "+string(res), "name", target.Name, "namespace", target.Namespace)
 
 		if err != nil {
-			return
+			return err
 		}
 	}
 
-	return
+	return nil
 }

controllers/tenant/resourcequotas.go

@@ -31,7 +31,8 @@ import (
 // the mutateFn along with the CreateOrUpdate to don't perform the update since resources are identical.
 //
 // In case of Namespace-scoped Resource Budget, we're just replicating the resources across all registered Namespaces.
-func (r *Manager) syncResourceQuotas(tenant *capsulev1beta1.Tenant) (err error) {
+// nolint:gocognit
+func (r *Manager) syncResourceQuotas(ctx context.Context, tenant *capsulev1beta1.Tenant) (err error) {
 	// getting ResourceQuota labels for the mutateFn
 	var tenantLabel, typeLabel string
 
@@ -42,7 +43,7 @@ func (r *Manager) syncResourceQuotas(tenant *capsulev1beta1.Tenant) (err error)
 	if typeLabel, err = capsulev1beta1.GetTypeLabel(&corev1.ResourceQuota{}); err != nil {
 		return err
 	}
-
+	// nolint:nestif
 	if tenant.Spec.ResourceQuota.Scope == capsulev1beta1.ResourceQuotaScopeTenant {
 		group := new(errgroup.Group)
 
@@ -67,8 +68,9 @@ func (r *Manager) syncResourceQuotas(tenant *capsulev1beta1.Tenant) (err error)
 				// These are required since Capsule is going to sum all the used quota to
 				// sum them and get the Tenant one.
 				list := &corev1.ResourceQuotaList{}
-				if scopeErr = r.List(context.TODO(), list, &client.ListOptions{LabelSelector: labels.NewSelector().Add(*tntRequirement).Add(*indexRequirement)}); scopeErr != nil {
+				if scopeErr = r.List(ctx, list, &client.ListOptions{LabelSelector: labels.NewSelector().Add(*tntRequirement).Add(*indexRequirement)}); scopeErr != nil {
 					r.Log.Error(scopeErr, "Cannot list ResourceQuota", "tenantFilter", tntRequirement.String(), "indexFilter", indexRequirement.String())
+
 					return
 				}
 				// Iterating over all the options declared for the ResourceQuota,
@@ -116,11 +118,13 @@ func (r *Manager) syncResourceQuotas(tenant *capsulev1beta1.Tenant) (err error)
 							list.Items[item].Spec.Hard[name] = resourceQuota.Hard[name]
 						}
 					}
-					if scopeErr = r.resourceQuotasUpdate(name, quantity, resourceQuota.Hard[name], list.Items...); scopeErr != nil {
+					if scopeErr = r.resourceQuotasUpdate(ctx, name, quantity, resourceQuota.Hard[name], list.Items...); scopeErr != nil {
 						r.Log.Error(scopeErr, "cannot proceed with outer ResourceQuota")
+
 						return
 					}
 				}
+
 				return
 			})
 		}
@@ -142,14 +146,14 @@ func (r *Manager) syncResourceQuotas(tenant *capsulev1beta1.Tenant) (err error)
 		namespace := ns
 
 		group.Go(func() error {
-			return r.syncResourceQuota(tenant, namespace, keys)
+			return r.syncResourceQuota(ctx, tenant, namespace, keys)
 		})
 	}
 
 	return group.Wait()
 }
 
-func (r *Manager) syncResourceQuota(tenant *capsulev1beta1.Tenant, namespace string, keys []string) (err error) {
+func (r *Manager) syncResourceQuota(ctx context.Context, tenant *capsulev1beta1.Tenant, namespace string, keys []string) (err error) {
 	// getting ResourceQuota labels for the mutateFn
 	var tenantLabel, typeLabel string
 
@@ -161,7 +165,7 @@ func (r *Manager) syncResourceQuota(tenant *capsulev1beta1.Tenant, namespace str
 		return err
 	}
 	// Pruning resource of non-requested resources
-	if err = r.pruningResources(namespace, keys, &corev1.ResourceQuota{}); err != nil {
+	if err = r.pruningResources(ctx, namespace, keys, &corev1.ResourceQuota{}); err != nil {
 		return err
 	}
 
@@ -174,8 +178,9 @@ func (r *Manager) syncResourceQuota(tenant *capsulev1beta1.Tenant, namespace str
 		}
 
 		var res controllerutil.OperationResult
+
 		err = retry.RetryOnConflict(retry.DefaultBackoff, func() (retryErr error) {
-			res, retryErr = controllerutil.CreateOrUpdate(context.TODO(), r.Client, target, func() (err error) {
+			res, retryErr = controllerutil.CreateOrUpdate(ctx, r.Client, target, func() (err error) {
 				target.SetLabels(map[string]string{
 					tenantLabel: tenant.Name,
 					typeLabel:   strconv.Itoa(index),
@@ -187,7 +192,7 @@ func (r *Manager) syncResourceQuota(tenant *capsulev1beta1.Tenant, namespace str
 					target.Spec.Hard = resQuota.Hard
 				}
 
-				return controllerutil.SetControllerReference(tenant, target, r.Scheme)
+				return controllerutil.SetControllerReference(tenant, target, r.Client.Scheme())
 			})
 
 			return retryErr
@@ -208,7 +213,7 @@ func (r *Manager) syncResourceQuota(tenant *capsulev1beta1.Tenant, namespace str
 // Serial ResourceQuota processing is expensive: using Go routines we can speed it up.
 // In case of multiple errors these are logged properly, returning a generic error since we have to repush back the
 // reconciliation loop.
-func (r *Manager) resourceQuotasUpdate(resourceName corev1.ResourceName, actual, limit resource.Quantity, list ...corev1.ResourceQuota) (err error) {
+func (r *Manager) resourceQuotasUpdate(ctx context.Context, resourceName corev1.ResourceName, actual, limit resource.Quantity, list ...corev1.ResourceQuota) (err error) {
 	group := new(errgroup.Group)
 
 	for _, item := range list {
@@ -216,12 +221,12 @@ func (r *Manager) resourceQuotasUpdate(resourceName corev1.ResourceName, actual,
 
 		group.Go(func() (err error) {
 			found := &corev1.ResourceQuota{}
-			if err = r.Get(context.TODO(), types.NamespacedName{Namespace: rq.Namespace, Name: rq.Name}, found); err != nil {
+			if err = r.Get(ctx, types.NamespacedName{Namespace: rq.Namespace, Name: rq.Name}, found); err != nil {
 				return
 			}
 
 			return retry.RetryOnConflict(retry.DefaultBackoff, func() (retryErr error) {
-				_, retryErr = controllerutil.CreateOrUpdate(context.TODO(), r.Client, found, func() error {
+				_, retryErr = controllerutil.CreateOrUpdate(ctx, r.Client, found, func() error {
 					// Ensuring annotation map is there to avoid uninitialized map error and
 					// assigning the overall usage
 					if found.Annotations == nil {
@@ -232,6 +237,7 @@ func (r *Manager) resourceQuotasUpdate(resourceName corev1.ResourceName, actual,
 					found.Annotations[capsulev1beta1.HardQuotaFor(resourceName)] = limit.String()
 					// Updating the Resource according to the actual.Cmp result
 					found.Spec.Hard = rq.Spec.Hard
+
 					return nil
 				})
 
@@ -244,7 +250,7 @@ func (r *Manager) resourceQuotasUpdate(resourceName corev1.ResourceName, actual,
 		// We had an error and we mark the whole transaction as failed
 		// to process it another time according to the Tenant controller back-off factor.
 		r.Log.Error(err, "Cannot update outer ResourceQuotas", "resourceName", resourceName.String())
-		err = fmt.Errorf("update of outer ResourceQuota items has failed: %s", err.Error())
+		err = fmt.Errorf("update of outer ResourceQuota items has failed: %w", err)
 	}
 
 	return err

controllers/tenant/resourcequotas_quota.go

@@ -0,0 +1,122 @@
+package tenant
+
+import (
+	"context"
+	"fmt"
+	"strings"
+
+	"golang.org/x/sync/errgroup"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
+	"k8s.io/apimachinery/pkg/runtime/schema"
+	"k8s.io/apimachinery/pkg/types"
+	"k8s.io/client-go/dynamic"
+	"k8s.io/client-go/util/retry"
+
+	capsulev1beta1 "github.com/clastix/capsule/api/v1beta1"
+)
+
+func (r *Manager) syncCustomResourceQuotaUsages(ctx context.Context, tenant *capsulev1beta1.Tenant) error {
+	type resource struct {
+		kind    string
+		group   string
+		version string
+	}
+	// nolint:prealloc
+	var resourceList []resource
+
+	for k := range tenant.GetAnnotations() {
+		if !strings.HasPrefix(k, capsulev1beta1.ResourceQuotaAnnotationPrefix) {
+			continue
+		}
+
+		parts := strings.Split(k, "/")
+		if len(parts) != 2 {
+			r.Log.Info("non well-formed Resource Limit annotation", "key", k)
+
+			continue
+		}
+
+		parts = strings.Split(parts[1], "_")
+
+		if len(parts) != 2 {
+			r.Log.Info("non well-formed Resource Limit annotation, cannot retrieve version", "key", k)
+
+			continue
+		}
+
+		groupKindParts := strings.Split(parts[0], ".")
+		if len(groupKindParts) < 2 {
+			r.Log.Info("non well-formed Resource Limit annotation, cannot retrieve kind and group", "key", k)
+
+			continue
+		}
+
+		resourceList = append(resourceList, resource{
+			kind:    groupKindParts[0],
+			group:   strings.Join(groupKindParts[1:], "."),
+			version: parts[1],
+		})
+	}
+
+	errGroup := new(errgroup.Group)
+
+	usedMap := make(map[string]int)
+
+	defer func() {
+		for gvk, used := range usedMap {
+			err := retry.RetryOnConflict(retry.DefaultBackoff, func() (retryErr error) {
+				tnt := &capsulev1beta1.Tenant{}
+				if retryErr = r.Client.Get(ctx, types.NamespacedName{Name: tenant.GetName()}, tnt); retryErr != nil {
+					return
+				}
+
+				if tnt.GetAnnotations() == nil {
+					tnt.Annotations = make(map[string]string)
+				}
+
+				tnt.Annotations[capsulev1beta1.UsedAnnotationForResource(gvk)] = fmt.Sprintf("%d", used)
+
+				return r.Client.Update(ctx, tnt)
+			})
+			if err != nil {
+				r.Log.Error(err, "cannot update custom Resource Quota", "GVK", gvk)
+			}
+		}
+	}()
+
+	for _, item := range resourceList {
+		res := item
+
+		errGroup.Go(func() (scopeErr error) {
+			dynamicClient := dynamic.NewForConfigOrDie(r.RESTConfig)
+
+			for _, ns := range tenant.Status.Namespaces {
+				var list *unstructured.UnstructuredList
+
+				list, scopeErr = dynamicClient.Resource(schema.GroupVersionResource{Group: res.group, Version: res.version, Resource: res.kind}).List(ctx, metav1.ListOptions{
+					FieldSelector: fmt.Sprintf("metadata.namespace==%s", ns),
+				})
+				if scopeErr != nil {
+					return scopeErr
+				}
+
+				key := fmt.Sprintf("%s.%s_%s", res.kind, res.group, res.version)
+
+				if _, ok := usedMap[key]; !ok {
+					usedMap[key] = 0
+				}
+
+				usedMap[key] += len(list.Items)
+			}
+
+			return
+		})
+	}
+
+	if err := errGroup.Wait(); err != nil {
+		return err
+	}
+
+	return nil
+}

controllers/tenant/rolebindings.go

@@ -9,16 +9,43 @@ import (
 	"golang.org/x/sync/errgroup"
 	rbacv1 "k8s.io/api/rbac/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
-	"k8s.io/apimachinery/pkg/types"
 	"sigs.k8s.io/controller-runtime/pkg/controller/controllerutil"
 
 	capsulev1beta1 "github.com/clastix/capsule/api/v1beta1"
-	"github.com/clastix/capsule/controllers/rbac"
 )
 
-// Additional Role Bindings can be used in many ways: applying Pod Security Policies or giving
-// access to CRDs or specific API groups.
-func (r *Manager) syncAdditionalRoleBindings(tenant *capsulev1beta1.Tenant) (err error) {
+// ownerClusterRoleBindings generates a Capsule AdditionalRoleBinding object for the Owner dynamic clusterrole in order
+// to take advantage of the additional role binding feature.
+func (r *Manager) ownerClusterRoleBindings(owner capsulev1beta1.OwnerSpec, clusterRole string) capsulev1beta1.AdditionalRoleBindingsSpec {
+	var subject rbacv1.Subject
+
+	if owner.Kind == "ServiceAccount" {
+		splitName := strings.Split(owner.Name, ":")
+
+		subject = rbacv1.Subject{
+			Kind:      owner.Kind.String(),
+			Name:      splitName[len(splitName)-1],
+			Namespace: splitName[len(splitName)-2],
+		}
+	} else {
+		subject = rbacv1.Subject{
+			APIGroup: rbacv1.GroupName,
+			Kind:     owner.Kind.String(),
+			Name:     owner.Name,
+		}
+	}
+
+	return capsulev1beta1.AdditionalRoleBindingsSpec{
+		ClusterRoleName: clusterRole,
+		Subjects: []rbacv1.Subject{
+			subject,
+		},
+	}
+}
+
+// Sync the dynamic Tenant Owner specific cluster-roles and additional Role Bindings, which can be used in many ways:
+// applying Pod Security Policies or giving access to CRDs or specific API groups.
+func (r *Manager) syncRoleBindings(ctx context.Context, tenant *capsulev1beta1.Tenant) (err error) {
 	// hashing the RoleBinding name due to DNS RFC-1123 applied to Kubernetes labels
 	hashFn := func(binding capsulev1beta1.AdditionalRoleBindingsSpec) string {
 		h := fnv.New64a()
@@ -32,7 +59,16 @@ func (r *Manager) syncAdditionalRoleBindings(tenant *capsulev1beta1.Tenant) (err
 		return fmt.Sprintf("%x", h.Sum64())
 	}
 	// getting requested Role Binding keys
-	var keys []string
+	keys := make([]string, 0, len(tenant.Spec.Owners))
+	// Generating for dynamic tenant owners cluster roles
+	for index, owner := range tenant.Spec.Owners {
+		for _, clusterRoleName := range owner.GetRoles(*tenant, index) {
+			cr := r.ownerClusterRoleBindings(owner, clusterRoleName)
+
+			keys = append(keys, hashFn(cr))
+		}
+	}
+	// Generating hash of additional role bindings
 	for _, i := range tenant.Spec.AdditionalRoleBindings {
 		keys = append(keys, hashFn(i))
 	}
@@ -43,14 +79,14 @@ func (r *Manager) syncAdditionalRoleBindings(tenant *capsulev1beta1.Tenant) (err
 		namespace := ns
 
 		group.Go(func() error {
-			return r.syncAdditionalRoleBinding(tenant, namespace, keys, hashFn)
+			return r.syncAdditionalRoleBinding(ctx, tenant, namespace, keys, hashFn)
 		})
 	}
 
 	return group.Wait()
 }
 
-func (r *Manager) syncAdditionalRoleBinding(tenant *capsulev1beta1.Tenant, ns string, keys []string, hashFn func(binding capsulev1beta1.AdditionalRoleBindingsSpec) string) (err error) {
+func (r *Manager) syncAdditionalRoleBinding(ctx context.Context, tenant *capsulev1beta1.Tenant, ns string, keys []string, hashFn func(binding capsulev1beta1.AdditionalRoleBindingsSpec) string) (err error) {
 	var tenantLabel, roleBindingLabel string
 
 	if tenantLabel, err = capsulev1beta1.GetTypeLabel(&capsulev1beta1.Tenant{}); err != nil {
@@ -61,11 +97,21 @@ func (r *Manager) syncAdditionalRoleBinding(tenant *capsulev1beta1.Tenant, ns st
 		return
 	}
 
-	if err = r.pruningResources(ns, keys, &rbacv1.RoleBinding{}); err != nil {
+	if err = r.pruningResources(ctx, ns, keys, &rbacv1.RoleBinding{}); err != nil {
 		return
 	}
 
-	for i, roleBinding := range tenant.Spec.AdditionalRoleBindings {
+	var roleBindings []capsulev1beta1.AdditionalRoleBindingsSpec
+
+	for index, owner := range tenant.Spec.Owners {
+		for _, clusterRoleName := range owner.GetRoles(*tenant, index) {
+			roleBindings = append(roleBindings, r.ownerClusterRoleBindings(owner, clusterRoleName))
+		}
+	}
+
+	roleBindings = append(roleBindings, tenant.Spec.AdditionalRoleBindings...)
+
+	for i, roleBinding := range roleBindings {
 		roleBindingHashLabel := hashFn(roleBinding)
 
 		target := &rbacv1.RoleBinding{
@@ -76,27 +122,29 @@ func (r *Manager) syncAdditionalRoleBinding(tenant *capsulev1beta1.Tenant, ns st
 		}
 
 		var res controllerutil.OperationResult
-		res, err = controllerutil.CreateOrUpdate(context.TODO(), r.Client, target, func() error {
+		res, err = controllerutil.CreateOrUpdate(ctx, r.Client, target, func() error {
 			target.ObjectMeta.Labels = map[string]string{
 				tenantLabel:      tenant.Name,
 				roleBindingLabel: roleBindingHashLabel,
 			}
 			target.RoleRef = rbacv1.RoleRef{
-				APIGroup: "rbac.authorization.k8s.io",
+				APIGroup: rbacv1.GroupName,
 				Kind:     "ClusterRole",
 				Name:     roleBinding.ClusterRoleName,
 			}
 			target.Subjects = roleBinding.Subjects
 
-			return controllerutil.SetControllerReference(tenant, target, r.Scheme)
+			return controllerutil.SetControllerReference(tenant, target, r.Client.Scheme())
 		})
 
-		r.emitEvent(tenant, target.GetNamespace(), res, fmt.Sprintf("Ensuring additional RoleBinding %s", target.GetName()), err)
+		r.emitEvent(tenant, target.GetNamespace(), res, fmt.Sprintf("Ensuring RoleBinding %s", target.GetName()), err)
 
 		if err != nil {
-			r.Log.Error(err, "Cannot sync Additional RoleBinding")
+			r.Log.Error(err, "Cannot sync RoleBinding")
 		}
-		r.Log.Info(fmt.Sprintf("Additional RoleBindings sync result: %s", string(res)), "name", target.Name, "namespace", target.Namespace)
+
+		r.Log.Info(fmt.Sprintf("RoleBinding sync result: %s", string(res)), "name", target.Name, "namespace", target.Namespace)
+
 		if err != nil {
 			return
 		}
@@ -104,76 +152,3 @@ func (r *Manager) syncAdditionalRoleBinding(tenant *capsulev1beta1.Tenant, ns st
 
 	return nil
 }
-
-// Each Tenant owner needs the admin Role attached to each Namespace, otherwise no actions on it can be performed.
-// Since RBAC is based on deny all first, some specific actions like editing Capsule resources are going to be blocked
-// via Dynamic Admission Webhooks.
-// TODO(prometherion): we could create a capsule:admin role rather than hitting webhooks for each action
-func (r *Manager) ownerRoleBinding(tenant *capsulev1beta1.Tenant) error {
-	// getting RoleBinding label for the mutateFn
-	var subjects []rbacv1.Subject
-
-	tl, err := capsulev1beta1.GetTypeLabel(&capsulev1beta1.Tenant{})
-	if err != nil {
-		return err
-	}
-
-	newLabels := map[string]string{tl: tenant.Name}
-
-	for _, owner := range tenant.Spec.Owners {
-		if owner.Kind == "ServiceAccount" {
-			splitName := strings.Split(owner.Name, ":")
-			subjects = append(subjects, rbacv1.Subject{
-				Kind:      owner.Kind.String(),
-				Name:      splitName[len(splitName)-1],
-				Namespace: splitName[len(splitName)-2],
-			})
-		} else {
-			subjects = append(subjects, rbacv1.Subject{
-				APIGroup: "rbac.authorization.k8s.io",
-				Kind:     owner.Kind.String(),
-				Name:     owner.Name,
-			})
-		}
-	}
-
-	list := make(map[types.NamespacedName]rbacv1.RoleRef)
-
-	for _, i := range tenant.Status.Namespaces {
-		list[types.NamespacedName{Namespace: i, Name: "namespace:admin"}] = rbacv1.RoleRef{
-			APIGroup: "rbac.authorization.k8s.io",
-			Kind:     "ClusterRole",
-			Name:     "admin",
-		}
-		list[types.NamespacedName{Namespace: i, Name: "namespace-deleter"}] = rbacv1.RoleRef{
-			APIGroup: "rbac.authorization.k8s.io",
-			Kind:     "ClusterRole",
-			Name:     rbac.DeleterRoleName,
-		}
-	}
-
-	for namespacedName, roleRef := range list {
-		target := &rbacv1.RoleBinding{
-			ObjectMeta: metav1.ObjectMeta{
-				Name:      namespacedName.Name,
-				Namespace: namespacedName.Namespace,
-			},
-		}
-
-		var res controllerutil.OperationResult
-		res, err = controllerutil.CreateOrUpdate(context.TODO(), r.Client, target, func() (err error) {
-			target.ObjectMeta.Labels = newLabels
-			target.Subjects = subjects
-			target.RoleRef = roleRef
-			return controllerutil.SetControllerReference(tenant, target, r.Scheme)
-		})
-
-		r.emitEvent(tenant, target.GetNamespace(), res, fmt.Sprintf("Ensuring Capsule RoleBinding %s", target.GetName()), err)
-
-		r.Log.Info("Role Binding sync result: "+string(res), "name", target.Name, "namespace", target.Namespace)
-		if err != nil {
-			return err
-		}
-	}
-	return nil
-}

controllers/tenant/utils.go

@@ -14,10 +14,11 @@ import (
 	capsulev1beta1 "github.com/clastix/capsule/api/v1beta1"
 )
 
-// pruningResources is taking care of removing the no more requested sub-resources as LimitRange, ResourceQuota or
+// pruningClusterResources is taking care of removing the no more requested sub-resources as LimitRange, ResourceQuota or
 // NetworkPolicy using the "exists" and "notin" LabelSelector to perform an outer-join removal.
-func (r *Manager) pruningResources(ns string, keys []string, obj client.Object) (err error) {
+func (r *Manager) pruningClusterResources(ctx context.Context, keys []string, obj client.Object) (err error) {
 	var capsuleLabel string
+
 	if capsuleLabel, err = capsulev1beta1.GetTypeLabel(obj); err != nil {
 		return
 	}
@@ -25,13 +26,16 @@ func (r *Manager) pruningResources(ns string, keys []string, obj client.Object)
 	selector := labels.NewSelector()
 
 	var exists *labels.Requirement
+
 	if exists, err = labels.NewRequirement(capsuleLabel, selection.Exists, []string{}); err != nil {
 		return
 	}
+
 	selector = selector.Add(*exists)
 
 	if len(keys) > 0 {
 		var notIn *labels.Requirement
+
 		if notIn, err = labels.NewRequirement(capsuleLabel, selection.NotIn, keys); err != nil {
 			return err
 		}
@@ -42,7 +46,48 @@ func (r *Manager) pruningResources(ns string, keys []string, obj client.Object)
 	r.Log.Info("Pruning objects with label selector " + selector.String())
 
 	return retry.RetryOnConflict(retry.DefaultBackoff, func() error {
-		return r.DeleteAllOf(context.TODO(), obj, &client.DeleteAllOfOptions{
+		return r.DeleteAllOf(ctx, obj, &client.DeleteAllOfOptions{
+			ListOptions: client.ListOptions{
+				LabelSelector: selector,
+			},
+			DeleteOptions: client.DeleteOptions{},
+		})
+	})
+}
+
+// pruningResources is taking care of removing the no more requested sub-resources as LimitRange, ResourceQuota or
+// NetworkPolicy using the "exists" and "notin" LabelSelector to perform an outer-join removal.
+func (r *Manager) pruningResources(ctx context.Context, ns string, keys []string, obj client.Object) (err error) {
+	var capsuleLabel string
+
+	if capsuleLabel, err = capsulev1beta1.GetTypeLabel(obj); err != nil {
+		return
+	}
+
+	selector := labels.NewSelector()
+
+	var exists *labels.Requirement
+
+	if exists, err = labels.NewRequirement(capsuleLabel, selection.Exists, []string{}); err != nil {
+		return
+	}
+
+	selector = selector.Add(*exists)
+
+	if len(keys) > 0 {
+		var notIn *labels.Requirement
+
+		if notIn, err = labels.NewRequirement(capsuleLabel, selection.NotIn, keys); err != nil {
+			return err
+		}
+
+		selector = selector.Add(*notIn)
+	}
+
+	r.Log.Info("Pruning objects with label selector " + selector.String())
+
+	return retry.RetryOnConflict(retry.DefaultBackoff, func() error {
+		return r.DeleteAllOf(ctx, obj, &client.DeleteAllOfOptions{
 			ListOptions: client.ListOptions{
 				LabelSelector: selector,
 				Namespace:     ns,
@@ -53,7 +98,8 @@ func (r *Manager) pruningResources(ns string, keys []string, obj client.Object)
 }
 
 func (r *Manager) emitEvent(object runtime.Object, namespace string, res controllerutil.OperationResult, msg string, err error) {
-	var eventType = corev1.EventTypeNormal
+	eventType := corev1.EventTypeNormal
+
 	if err != nil {
 		eventType = corev1.EventTypeWarning
 		res = "Error"

controllers/tls/errors.go

@@ -0,0 +1,10 @@
+// Copyright 2020-2021 Clastix Labs
+// SPDX-License-Identifier: Apache-2.0
+
+package tls
+
+type RunningInOutOfClusterModeError struct{}
+
+func (r RunningInOutOfClusterModeError) Error() string {
+	return "cannot retrieve the leader Pod, probably running in out of the cluster mode"
+}

controllers/tls/manager.go

@@ -0,0 +1,337 @@
+// Copyright 2020-2021 Clastix Labs
+// SPDX-License-Identifier: Apache-2.0
+
+package tls
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"time"
+
+	"github.com/go-logr/logr"
+	"github.com/pkg/errors"
+	"golang.org/x/sync/errgroup"
+	admissionregistrationv1 "k8s.io/api/admissionregistration/v1"
+	corev1 "k8s.io/api/core/v1"
+	apiextensionsv1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1"
+	apierrors "k8s.io/apimachinery/pkg/api/errors"
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apimachinery/pkg/types"
+	"k8s.io/client-go/util/retry"
+	"k8s.io/utils/pointer"
+	ctrl "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/controllerutil"
+	"sigs.k8s.io/controller-runtime/pkg/handler"
+	"sigs.k8s.io/controller-runtime/pkg/predicate"
+	"sigs.k8s.io/controller-runtime/pkg/reconcile"
+	"sigs.k8s.io/controller-runtime/pkg/source"
+
+	"github.com/clastix/capsule/controllers/utils"
+	"github.com/clastix/capsule/pkg/cert"
+	"github.com/clastix/capsule/pkg/configuration"
+)
+
+const (
+	certificateExpirationThreshold = 3 * 24 * time.Hour
+	certificateValidity            = 6 * 30 * 24 * time.Hour
+	PodUpdateAnnotationName        = "capsule.clastix.io/updated"
+)
+
+type Reconciler struct {
+	client.Client
+	Log           logr.Logger
+	Scheme        *runtime.Scheme
+	Namespace     string
+	Configuration configuration.Configuration
+}
+
+func (r *Reconciler) SetupWithManager(mgr ctrl.Manager) error {
+	enqueueFn := handler.EnqueueRequestsFromMapFunc(func(client.Object) []reconcile.Request {
+		return []reconcile.Request{
+			{
+				NamespacedName: types.NamespacedName{
+					Namespace: r.Namespace,
+					Name:      r.Configuration.TLSSecretName(),
+				},
+			},
+		}
+	})
+
+	return ctrl.NewControllerManagedBy(mgr).
+		For(&corev1.Secret{}, utils.NamesMatchingPredicate(r.Configuration.TLSSecretName())).
+		Watches(source.NewKindWithCache(&admissionregistrationv1.ValidatingWebhookConfiguration{}, mgr.GetCache()), enqueueFn, builder.WithPredicates(predicate.NewPredicateFuncs(func(object client.Object) bool {
+			return object.GetName() == r.Configuration.ValidatingWebhookConfigurationName()
+		}))).
+		Watches(source.NewKindWithCache(&admissionregistrationv1.MutatingWebhookConfiguration{}, mgr.GetCache()), enqueueFn, builder.WithPredicates(predicate.NewPredicateFuncs(func(object client.Object) bool {
+			return object.GetName() == r.Configuration.MutatingWebhookConfigurationName()
+		}))).
+		Watches(source.NewKindWithCache(&apiextensionsv1.CustomResourceDefinition{}, mgr.GetCache()), enqueueFn, builder.WithPredicates(predicate.NewPredicateFuncs(func(object client.Object) bool {
+			return object.GetName() == r.Configuration.TenantCRDName()
+		}))).
+		Complete(r)
+}
+
+func (r Reconciler) ReconcileCertificates(ctx context.Context, certSecret *corev1.Secret) error {
+	if r.shouldUpdateCertificate(certSecret) {
+		r.Log.Info("Generating new TLS certificate")
+
+		ca, err := cert.GenerateCertificateAuthority()
+		if err != nil {
+			return err
+		}
+
+		opts := cert.NewCertOpts(time.Now().Add(certificateValidity), fmt.Sprintf("capsule-webhook-service.%s.svc", r.Namespace))
+
+		crt, key, err := ca.GenerateCertificate(opts)
+		if err != nil {
+			r.Log.Error(err, "Cannot generate new TLS certificate")
+
+			return err
+		}
+
+		caCrt, _ := ca.CACertificatePem()
+
+		certSecret.Data = map[string][]byte{
+			corev1.TLSCertKey:              crt.Bytes(),
+			corev1.TLSPrivateKeyKey:        key.Bytes(),
+			corev1.ServiceAccountRootCAKey: caCrt.Bytes(),
+		}
+
+		t := &corev1.Secret{ObjectMeta: certSecret.ObjectMeta}
+
+		_, err = controllerutil.CreateOrUpdate(ctx, r.Client, t, func() error {
+			t.Data = certSecret.Data
+
+			return nil
+		})
+		if err != nil {
+			r.Log.Error(err, "cannot update Capsule TLS")
+
+			return err
+		}
+	}
+
+	var caBundle []byte
+
+	var ok bool
+
+	if caBundle, ok = certSecret.Data[corev1.ServiceAccountRootCAKey]; !ok {
+		return fmt.Errorf("missing %s field in %s secret", corev1.ServiceAccountRootCAKey, r.Configuration.TLSSecretName())
+	}
+
+	r.Log.Info("Updating caBundle in webhooks and crd")
+
+	group := new(errgroup.Group)
+	group.Go(func() error {
+		return r.updateMutatingWebhookConfiguration(ctx, caBundle)
+	})
+	group.Go(func() error {
+		return r.updateValidatingWebhookConfiguration(ctx, caBundle)
+	})
+	group.Go(func() error {
+		return r.updateCustomResourceDefinition(ctx, caBundle)
+	})
+
+	operatorPods, err := r.getOperatorPods(ctx)
+	if err != nil {
+		if errors.As(err, &RunningInOutOfClusterModeError{}) {
+			r.Log.Info("skipping annotation of Pods for cert-manager", "error", err.Error())
+
+			return nil
+		}
+
+		return err
+	}
+
+	r.Log.Info("Updating capsule operator pods")
+
+	for _, pod := range operatorPods.Items {
+		p := pod
+
+		group.Go(func() error {
+			return r.updateOperatorPod(ctx, p)
+		})
+	}
+
+	if err := group.Wait(); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (r Reconciler) Reconcile(ctx context.Context, request ctrl.Request) (ctrl.Result, error) {
+	r.Log = r.Log.WithValues("Request.Namespace", request.Namespace, "Request.Name", request.Name)
+
+	certSecret := &corev1.Secret{}
+
+	if err := r.Client.Get(ctx, request.NamespacedName, certSecret); err != nil {
+		// Error reading the object - requeue the request.
+		return reconcile.Result{}, err
+	}
+
+	if err := r.ReconcileCertificates(ctx, certSecret); err != nil {
+		return reconcile.Result{}, err
+	}
+
+	certificate, err := cert.GetCertificateFromBytes(certSecret.Data[corev1.TLSCertKey])
+	if err != nil {
+		return reconcile.Result{}, err
+	}
+
+	now := time.Now()
+	requeueTime := certificate.NotAfter.Add(-(certificateExpirationThreshold - 1*time.Second))
+	rq := requeueTime.Sub(now)
+
+	r.Log.Info("Reconciliation completed, processing back in " + rq.String())
+
+	return reconcile.Result{Requeue: true, RequeueAfter: rq}, nil
+}
+
+func (r Reconciler) shouldUpdateCertificate(secret *corev1.Secret) bool {
+	if _, ok := secret.Data[corev1.ServiceAccountRootCAKey]; !ok {
+		return true
+	}
+
+	certificate, key, err := cert.GetCertificateWithPrivateKeyFromBytes(secret.Data[corev1.TLSCertKey], secret.Data[corev1.TLSPrivateKeyKey])
+	if err != nil {
+		return true
+	}
+
+	if err := cert.ValidateCertificate(certificate, key, certificateExpirationThreshold); err != nil {
+		r.Log.Error(err, "failed to validate certificate, generating new one")
+
+		return true
+	}
+
+	r.Log.Info("Skipping TLS certificate generation as it is still valid")
+
+	return false
+}
+
+// By default helm doesn't allow to use templates in CRD (https://helm.sh/docs/chart_best_practices/custom_resource_definitions/#method-1-let-helm-do-it-for-you).
+// In order to overcome this, we are setting conversion strategy in helm chart to None, and then update it with CA and namespace information.
+func (r *Reconciler) updateCustomResourceDefinition(ctx context.Context, caBundle []byte) error {
+	return retry.RetryOnConflict(retry.DefaultBackoff, func() (err error) {
+		crd := &apiextensionsv1.CustomResourceDefinition{}
+		err = r.Get(ctx, types.NamespacedName{Name: "tenants.capsule.clastix.io"}, crd)
+		if err != nil {
+			r.Log.Error(err, "cannot retrieve CustomResourceDefinition")
+
+			return err
+		}
+
+		_, err = controllerutil.CreateOrUpdate(ctx, r.Client, crd, func() error {
+			crd.Spec.Conversion = &apiextensionsv1.CustomResourceConversion{
+				Strategy: "Webhook",
+				Webhook: &apiextensionsv1.WebhookConversion{
+					ClientConfig: &apiextensionsv1.WebhookClientConfig{
+						Service: &apiextensionsv1.ServiceReference{
+							Namespace: r.Namespace,
+							Name:      "capsule-webhook-service",
+							Path:      pointer.StringPtr("/convert"),
+							Port:      pointer.Int32Ptr(443),
+						},
+						CABundle: caBundle,
+					},
+					ConversionReviewVersions: []string{"v1alpha1", "v1beta1"},
+				},
+			}
+
+			return nil
+		})
+
+		return err
+	})
+}
+
+//nolint:dupl
+func (r Reconciler) updateValidatingWebhookConfiguration(ctx context.Context, caBundle []byte) error {
+	return retry.RetryOnConflict(retry.DefaultBackoff, func() (err error) {
+		vw := &admissionregistrationv1.ValidatingWebhookConfiguration{}
+		err = r.Get(ctx, types.NamespacedName{Name: r.Configuration.ValidatingWebhookConfigurationName()}, vw)
+		if err != nil {
+			r.Log.Error(err, "cannot retrieve ValidatingWebhookConfiguration")
+
+			return err
+		}
+		for i, w := range vw.Webhooks {
+			// Updating CABundle only in case of an internal service reference
+			if w.ClientConfig.Service != nil {
+				vw.Webhooks[i].ClientConfig.CABundle = caBundle
+			}
+		}
+
+		return r.Update(ctx, vw, &client.UpdateOptions{})
+	})
+}
+
+//nolint:dupl
+func (r Reconciler) updateMutatingWebhookConfiguration(ctx context.Context, caBundle []byte) error {
+	return retry.RetryOnConflict(retry.DefaultBackoff, func() (err error) {
+		mw := &admissionregistrationv1.MutatingWebhookConfiguration{}
+		err = r.Get(ctx, types.NamespacedName{Name: r.Configuration.MutatingWebhookConfigurationName()}, mw)
+		if err != nil {
+			r.Log.Error(err, "cannot retrieve MutatingWebhookConfiguration")
+
+			return err
+		}
+		for i, w := range mw.Webhooks {
+			// Updating CABundle only in case of an internal service reference
+			if w.ClientConfig.Service != nil {
+				mw.Webhooks[i].ClientConfig.CABundle = caBundle
+			}
+		}
+
+		return r.Update(ctx, mw, &client.UpdateOptions{})
+	})
+}
+
+func (r Reconciler) updateOperatorPod(ctx context.Context, pod corev1.Pod) error {
+	return retry.RetryOnConflict(retry.DefaultRetry, func() error {
+		// Need to get latest version of pod
+		p := &corev1.Pod{}
+
+		if err := r.Client.Get(ctx, types.NamespacedName{Namespace: pod.Namespace, Name: pod.Name}, p); err != nil && !apierrors.IsNotFound(err) {
+			r.Log.Error(err, "cannot get pod", "name", pod.Name, "namespace", pod.Namespace)
+
+			return err
+		}
+
+		if p.Annotations == nil {
+			p.Annotations = map[string]string{}
+		}
+
+		p.Annotations[PodUpdateAnnotationName] = time.Now().Format(time.RFC3339Nano)
+
+		if err := r.Client.Update(ctx, p, &client.UpdateOptions{}); err != nil {
+			r.Log.Error(err, "cannot update pod", "name", pod.Name, "namespace", pod.Namespace)
+
+			return err
+		}
+
+		return nil
+	})
+}
+
+func (r Reconciler) getOperatorPods(ctx context.Context) (*corev1.PodList, error) {
+	hostname, _ := os.Hostname()
+
+	leaderPod := &corev1.Pod{}
+
+	if err := r.Client.Get(ctx, types.NamespacedName{Namespace: os.Getenv("NAMESPACE"), Name: hostname}, leaderPod); err != nil {
+		return nil, RunningInOutOfClusterModeError{}
+	}
+
+	podList := &corev1.PodList{}
+	if err := r.Client.List(ctx, podList, client.MatchingLabels(leaderPod.ObjectMeta.Labels)); err != nil {
+		r.Log.Error(err, "cannot retrieve list of Capsule pods")
+
+		return nil, err
+	}
+
+	return podList, nil
+}

controllers/utils/name_matching.go

@@ -0,0 +1,19 @@
+package utils
+
+import (
+	"sigs.k8s.io/controller-runtime/pkg/builder"
+	"sigs.k8s.io/controller-runtime/pkg/client"
+	"sigs.k8s.io/controller-runtime/pkg/predicate"
+)
+
+func NamesMatchingPredicate(names ...string) builder.Predicates {
+	return builder.WithPredicates(predicate.NewPredicateFuncs(func(object client.Object) bool {
+		for _, name := range names {
+			if object.GetName() == name {
+				return true
+			}
+		}
+
+		return false
+	}))
+}

docs/.gitignore

@@ -0,0 +1,8 @@
+*.log
+.cache
+.DS_Store
+src/.temp
+node_modules
+dist
+.env
+.env.*

docs/README.md

@@ -0,0 +1,12 @@
+# Capsule Documentation
+
+1. Ensure to have [`yarn`](https://classic.yarnpkg.com/lang/en/docs/install/#debian-stable) installed in your path.
+2. `yarn install`
+
+## Local development
+
+```shell
+yarn develop
+```
+
+This will create a local webserver listening on `localhost:8080` with hot-reload of your local changes.