diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json new file mode 100644 index 0000000..0c3da07 --- /dev/null +++ b/.devcontainer/devcontainer.json @@ -0,0 +1,26 @@ +{ + "name": "Kubebuilder DevContainer", + "image": "mcr.microsoft.com/devcontainers/go:1.23-bookworm", + "features": { + "ghcr.io/devcontainers/features/docker-in-docker:2": {}, + "ghcr.io/devcontainers/features/git:1": {}, + "ghcr.io/devcontainers/features/github-cli:1": {}, + "ghcr.io/devcontainers/features/kubectl-helm-minikube:1": {} + }, + + "runArgs": ["--network=host"], + + "customizations": { + "vscode": { + "settings": { + "terminal.integrated.shell.linux": "/bin/bash" + }, + "extensions": [ + "ms-kubernetes-tools.vscode-kubernetes-tools", + "ms-azuretools.vscode-docker" + ] + } + }, + + "onCreateCommand": "bash .devcontainer/post-install.sh" +} diff --git a/.devcontainer/post-install.sh b/.devcontainer/post-install.sh new file mode 100644 index 0000000..b2960d5 --- /dev/null +++ b/.devcontainer/post-install.sh @@ -0,0 +1,18 @@ +#!/bin/bash +set -x + +curl -Lo ./kind https://kind.sigs.k8s.io/dl/latest/kind-linux-amd64 +chmod +x ./kind +sudo mv ./kind /usr/local/bin/kind + +curl -L -o kubebuilder https://go.kubebuilder.io/dl/latest/linux/amd64 +chmod +x kubebuilder +sudo mv kubebuilder /usr/local/bin/ + +docker network create -d=bridge --subnet=172.19.0.0/24 kind + +kind version +kubebuilder version +docker --version +go version +kubectl version --client diff --git a/.dockerignore b/.dockerignore new file mode 100644 index 0000000..a3aab7a --- /dev/null +++ b/.dockerignore @@ -0,0 +1,3 @@ +# More info: https://docs.docker.com/engine/reference/builder/#dockerignore-file +# Ignore build and test binaries. +bin/ diff --git a/.github/workflows/test-e2e.yml b/.github/workflows/test-e2e.yml new file mode 100644 index 0000000..b3b66dc --- /dev/null +++ b/.github/workflows/test-e2e.yml @@ -0,0 +1,35 @@ +name: E2E Tests + +on: + push: + pull_request: + +jobs: + test-e2e: + name: Run on Ubuntu + runs-on: ubuntu-latest + steps: + - name: Clone the code + uses: actions/checkout@v4 + + - name: Setup Go + uses: actions/setup-go@v5 + with: + go-version-file: 'go.mod' + + - name: Install the latest version of kind + run: | + curl -Lo ./kind https://kind.sigs.k8s.io/dl/latest/kind-linux-amd64 + chmod +x ./kind + sudo mv ./kind /usr/local/bin/kind + + - name: Verify kind installation + run: kind version + + - name: Create kind cluster + run: kind create cluster + + - name: Running Test e2e + run: | + go mod tidy + make test-e2e diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml new file mode 100644 index 0000000..07fbf7c --- /dev/null +++ b/.github/workflows/test.yml @@ -0,0 +1,23 @@ +name: Tests + +on: + push: + pull_request: + +jobs: + test: + name: Run on Ubuntu + runs-on: ubuntu-latest + steps: + - name: Clone the code + uses: actions/checkout@v4 + + - name: Setup Go + uses: actions/setup-go@v5 + with: + go-version-file: 'go.mod' + + - name: Running Tests + run: | + go mod tidy + make test diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..53b9534 --- /dev/null +++ b/.gitignore @@ -0,0 +1,30 @@ +# Binaries for programs and plugins +*.exe +*.exe~ +*.dll +*.so +*.dylib +bin/* +Dockerfile.cross + +# Test binary, built with `go test -c` +*.test + +# Output of the go coverage tool, specifically when used with LiteIDE +*.out + +# Go workspace file +go.work + +# Kubernetes Generated files - skip generated files, except for vendored files +!vendor/**/zz_generated.* + +# editor and IDE paraphernalia +.idea +.vscode +*.swp +*.swo +*~ + +# macOS +.DS_Store diff --git a/.golangci.yml b/.golangci.yml new file mode 100644 index 0000000..aac8a13 --- /dev/null +++ b/.golangci.yml @@ -0,0 +1,47 @@ +run: + timeout: 5m + allow-parallel-runners: true + +issues: + # don't skip warning about doc comments + # don't exclude the default set of lint + exclude-use-default: false + # restore some of the defaults + # (fill in the rest as needed) + exclude-rules: + - path: "api/*" + linters: + - lll + - path: "internal/*" + linters: + - dupl + - lll +linters: + disable-all: true + enable: + - dupl + - errcheck + - exportloopref + - ginkgolinter + - goconst + - gocyclo + - gofmt + - goimports + - gosimple + - govet + - ineffassign + - lll + - misspell + - nakedret + - prealloc + - revive + - staticcheck + - typecheck + - unconvert + - unparam + - unused + +linters-settings: + revive: + rules: + - name: comment-spacings diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md index 6a35a74..a5b17cd 100644 --- a/CONTRIBUTING.md +++ b/CONTRIBUTING.md @@ -20,11 +20,7 @@ If your repo has certain guidelines for contribution, put them here ahead of the - [Mentoring Initiatives](https://k8s.dev/community/mentoring) - We have a diverse set of mentorship programs available that are always looking for volunteers! - +- [Slack channel](https://kubernetes.slack.com/messages/wg-etcd-operator) +- [Mailing list](https://groups.google.com/a/kubernetes.io/g/wg-etcd-operator) diff --git a/Dockerfile b/Dockerfile new file mode 100644 index 0000000..5c73c7f --- /dev/null +++ b/Dockerfile @@ -0,0 +1,33 @@ +# Build the manager binary +FROM golang:1.23 AS builder +ARG TARGETOS +ARG TARGETARCH + +WORKDIR /workspace +# Copy the Go Modules manifests +COPY go.mod go.mod +COPY go.sum go.sum +# cache deps before building and copying source so that we don't need to re-download as much +# and so that source changes don't invalidate our downloaded layer +RUN go mod download + +# Copy the go source +COPY cmd/main.go cmd/main.go +COPY api/ api/ +COPY internal/ internal/ + +# Build +# the GOARCH has not a default value to allow the binary be built according to the host where the command +# was called. For example, if we call make docker-build in a local env which has the Apple Silicon M1 SO +# the docker BUILDPLATFORM arg will be linux/arm64 when for Apple x86 it will be linux/amd64. Therefore, +# by leaving it empty we can ensure that the container and binary shipped on it will have the same platform. +RUN CGO_ENABLED=0 GOOS=${TARGETOS:-linux} GOARCH=${TARGETARCH} go build -a -o manager cmd/main.go + +# Use distroless as minimal base image to package the manager binary +# Refer to https://github.com/GoogleContainerTools/distroless for more details +FROM gcr.io/distroless/static:nonroot +WORKDIR / +COPY --from=builder /workspace/manager . +USER 65532:65532 + +ENTRYPOINT ["/manager"] diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..d8ba59c --- /dev/null +++ b/Makefile @@ -0,0 +1,229 @@ +# Image URL to use all building/pushing image targets +IMG ?= controller:latest +# ENVTEST_K8S_VERSION refers to the version of kubebuilder assets to be downloaded by envtest binary. +ENVTEST_K8S_VERSION = 1.31.0 + +# Get the currently used golang install path (in GOPATH/bin, unless GOBIN is set) +ifeq (,$(shell go env GOBIN)) +GOBIN=$(shell go env GOPATH)/bin +else +GOBIN=$(shell go env GOBIN) +endif + +# CONTAINER_TOOL defines the container tool to be used for building images. +# Be aware that the target commands are only tested with Docker which is +# scaffolded by default. However, you might want to replace it to use other +# tools. (i.e. podman) +CONTAINER_TOOL ?= docker + +# Setting SHELL to bash allows bash commands to be executed by recipes. +# Options are set to exit when a recipe line exits non-zero or a piped command fails. +SHELL = /usr/bin/env bash -o pipefail +.SHELLFLAGS = -ec + +.PHONY: all +all: build + +##@ General + +# The help target prints out all targets with their descriptions organized +# beneath their categories. The categories are represented by '##@' and the +# target descriptions by '##'. The awk command is responsible for reading the +# entire set of makefiles included in this invocation, looking for lines of the +# file as xyz: ## something, and then pretty-format the target and help. Then, +# if there's a line with ##@ something, that gets pretty-printed as a category. +# More info on the usage of ANSI control characters for terminal formatting: +# https://en.wikipedia.org/wiki/ANSI_escape_code#SGR_parameters +# More info on the awk command: +# http://linuxcommand.org/lc3_adv_awk.php + +.PHONY: help +help: ## Display this help. + @awk 'BEGIN {FS = ":.*##"; printf "\nUsage:\n make \033[36m\033[0m\n"} /^[a-zA-Z_0-9-]+:.*?##/ { printf " \033[36m%-15s\033[0m %s\n", $$1, $$2 } /^##@/ { printf "\n\033[1m%s\033[0m\n", substr($$0, 5) } ' $(MAKEFILE_LIST) + +##@ Development + +.PHONY: manifests +manifests: controller-gen ## Generate WebhookConfiguration, ClusterRole and CustomResourceDefinition objects. + $(CONTROLLER_GEN) rbac:roleName=manager-role crd webhook paths="./..." output:crd:artifacts:config=config/crd/bases + +.PHONY: generate +generate: controller-gen ## Generate code containing DeepCopy, DeepCopyInto, and DeepCopyObject method implementations. + $(CONTROLLER_GEN) object:headerFile="hack/boilerplate.go.txt" paths="./..." + +.PHONY: fmt +fmt: ## Run go fmt against code. + go fmt ./... + +.PHONY: vet +vet: ## Run go vet against code. + go vet ./... + +.PHONY: test +test: manifests generate fmt vet envtest ## Run tests. + KUBEBUILDER_ASSETS="$(shell $(ENVTEST) use $(ENVTEST_K8S_VERSION) --bin-dir $(LOCALBIN) -p path)" go test $$(go list ./... | grep -v /e2e) -coverprofile cover.out + +# TODO(user): To use a different vendor for e2e tests, modify the setup under 'tests/e2e'. +# The default setup assumes Kind is pre-installed and builds/loads the Manager Docker image locally. +# Prometheus and CertManager are installed by default; skip with: +# - PROMETHEUS_INSTALL_SKIP=true +# - CERT_MANAGER_INSTALL_SKIP=true +.PHONY: test-e2e +test-e2e: manifests generate fmt vet ## Run the e2e tests. Expected an isolated environment using Kind. + @command -v kind >/dev/null 2>&1 || { \ + echo "Kind is not installed. Please install Kind manually."; \ + exit 1; \ + } + @kind get clusters | grep -q 'kind' || { \ + echo "No Kind cluster is running. Please start a Kind cluster before running the e2e tests."; \ + exit 1; \ + } + go test ./test/e2e/ -v -ginkgo.v + +.PHONY: lint +lint: golangci-lint ## Run golangci-lint linter + $(GOLANGCI_LINT) run + +.PHONY: lint-fix +lint-fix: golangci-lint ## Run golangci-lint linter and perform fixes + $(GOLANGCI_LINT) run --fix + +##@ Build + +.PHONY: build +build: manifests generate fmt vet ## Build manager binary. + go build -o bin/manager cmd/main.go + +.PHONY: run +run: manifests generate fmt vet ## Run a controller from your host. + go run ./cmd/main.go + +# If you wish to build the manager image targeting other platforms you can use the --platform flag. +# (i.e. docker build --platform linux/arm64). However, you must enable docker buildKit for it. +# More info: https://docs.docker.com/develop/develop-images/build_enhancements/ +.PHONY: docker-build +docker-build: ## Build docker image with the manager. + $(CONTAINER_TOOL) build -t ${IMG} . + +.PHONY: docker-push +docker-push: ## Push docker image with the manager. + $(CONTAINER_TOOL) push ${IMG} + +# PLATFORMS defines the target platforms for the manager image be built to provide support to multiple +# architectures. (i.e. make docker-buildx IMG=myregistry/mypoperator:0.0.1). To use this option you need to: +# - be able to use docker buildx. More info: https://docs.docker.com/build/buildx/ +# - have enabled BuildKit. More info: https://docs.docker.com/develop/develop-images/build_enhancements/ +# - be able to push the image to your registry (i.e. if you do not set a valid value via IMG=> then the export will fail) +# To adequately provide solutions that are compatible with multiple platforms, you should consider using this option. +PLATFORMS ?= linux/arm64,linux/amd64,linux/s390x,linux/ppc64le +.PHONY: docker-buildx +docker-buildx: ## Build and push docker image for the manager for cross-platform support + # copy existing Dockerfile and insert --platform=${BUILDPLATFORM} into Dockerfile.cross, and preserve the original Dockerfile + sed -e '1 s/\(^FROM\)/FROM --platform=\$$\{BUILDPLATFORM\}/; t' -e ' 1,// s//FROM --platform=\$$\{BUILDPLATFORM\}/' Dockerfile > Dockerfile.cross + - $(CONTAINER_TOOL) buildx create --name etcd-operator-builder + $(CONTAINER_TOOL) buildx use etcd-operator-builder + - $(CONTAINER_TOOL) buildx build --push --platform=$(PLATFORMS) --tag ${IMG} -f Dockerfile.cross . + - $(CONTAINER_TOOL) buildx rm etcd-operator-builder + rm Dockerfile.cross + +.PHONY: build-installer +build-installer: manifests generate kustomize ## Generate a consolidated YAML with CRDs and deployment. + mkdir -p dist + cd config/manager && $(KUSTOMIZE) edit set image controller=${IMG} + $(KUSTOMIZE) build config/default > dist/install.yaml + +##@ Deployment + +ifndef ignore-not-found + ignore-not-found = false +endif + +.PHONY: install +install: manifests kustomize ## Install CRDs into the K8s cluster specified in ~/.kube/config. + $(KUSTOMIZE) build config/crd | $(KUBECTL) apply -f - + +.PHONY: uninstall +uninstall: manifests kustomize ## Uninstall CRDs from the K8s cluster specified in ~/.kube/config. Call with ignore-not-found=true to ignore resource not found errors during deletion. + $(KUSTOMIZE) build config/crd | $(KUBECTL) delete --ignore-not-found=$(ignore-not-found) -f - + +.PHONY: deploy +deploy: manifests kustomize ## Deploy controller to the K8s cluster specified in ~/.kube/config. + cd config/manager && $(KUSTOMIZE) edit set image controller=${IMG} + $(KUSTOMIZE) build config/default | $(KUBECTL) apply -f - + +.PHONY: undeploy +undeploy: kustomize ## Undeploy controller from the K8s cluster specified in ~/.kube/config. Call with ignore-not-found=true to ignore resource not found errors during deletion. + $(KUSTOMIZE) build config/default | $(KUBECTL) delete --ignore-not-found=$(ignore-not-found) -f - + +##@ Documentation + +.PHONY: api-docs +api-docs: crd-ref-docs ## Generate api references docs. + $(CRD_REF_DOCS) \ + --source-path=./api \ + --renderer=markdown \ + --output-path=./docs/api-references/docs.md \ + --templates-dir=./docs/api-references/template/ \ + --config=./docs/api-references/config.yaml + +##@ Dependencies + +## Location to install dependencies to +LOCALBIN ?= $(shell pwd)/bin +$(LOCALBIN): + mkdir -p $(LOCALBIN) + +## Tool Binaries +KUBECTL ?= kubectl +KUSTOMIZE ?= $(LOCALBIN)/kustomize +CONTROLLER_GEN ?= $(LOCALBIN)/controller-gen +ENVTEST ?= $(LOCALBIN)/setup-envtest +GOLANGCI_LINT = $(LOCALBIN)/golangci-lint +CRD_REF_DOCS ?= $(LOCALBIN)/crd-ref-docs + +## Tool Versions +KUSTOMIZE_VERSION ?= v5.5.0 +CONTROLLER_TOOLS_VERSION ?= v0.16.4 +ENVTEST_VERSION ?= release-0.19 +GOLANGCI_LINT_VERSION ?= v1.61.0 +CRD_REF_DOCS_VERSION ?= v0.1.0 + +.PHONY: kustomize +kustomize: $(KUSTOMIZE) ## Download kustomize locally if necessary. +$(KUSTOMIZE): $(LOCALBIN) + $(call go-install-tool,$(KUSTOMIZE),sigs.k8s.io/kustomize/kustomize/v5,$(KUSTOMIZE_VERSION)) + +.PHONY: controller-gen +controller-gen: $(CONTROLLER_GEN) ## Download controller-gen locally if necessary. +$(CONTROLLER_GEN): $(LOCALBIN) + $(call go-install-tool,$(CONTROLLER_GEN),sigs.k8s.io/controller-tools/cmd/controller-gen,$(CONTROLLER_TOOLS_VERSION)) + +.PHONY: envtest +envtest: $(ENVTEST) ## Download setup-envtest locally if necessary. +$(ENVTEST): $(LOCALBIN) + $(call go-install-tool,$(ENVTEST),sigs.k8s.io/controller-runtime/tools/setup-envtest,$(ENVTEST_VERSION)) + +.PHONY: crd-ref-docs +crd-ref-docs: ## Install crd-ref-docs. + GOBIN=$(LOCALBIN) go install github.com/elastic/crd-ref-docs@$(CRD_REF_DOCS_VERSION) + +.PHONY: golangci-lint +golangci-lint: $(GOLANGCI_LINT) ## Download golangci-lint locally if necessary. +$(GOLANGCI_LINT): $(LOCALBIN) + $(call go-install-tool,$(GOLANGCI_LINT),github.com/golangci/golangci-lint/cmd/golangci-lint,$(GOLANGCI_LINT_VERSION)) + +# go-install-tool will 'go install' any package with custom target and name of binary, if it doesn't exist +# $1 - target path with name of binary +# $2 - package url which can be installed +# $3 - specific version of package +define go-install-tool +@[ -f "$(1)-$(3)" ] || { \ +set -e; \ +package=$(2)@$(3) ;\ +echo "Downloading $${package}" ;\ +rm -f $(1) || true ;\ +GOBIN=$(LOCALBIN) go install $${package} ;\ +mv $(1) $(1)-$(3) ;\ +} ;\ +ln -sf $(1)-$(3) $(1) +endef diff --git a/OWNERS b/OWNERS index 218b769..160a810 100644 --- a/OWNERS +++ b/OWNERS @@ -1,6 +1,8 @@ # See the OWNERS docs at https://go.k8s.io/owners approvers: - # TODO: in your repo created from this template, you should replace the - # github-admin-team with a list of project owners, see the doc linked above. - - github-admin-team + - ahrtr + - jmhbnz + - hakman + - jberkus + - justinsb diff --git a/OWNERS_ALIASES b/OWNERS_ALIASES deleted file mode 100644 index 5acaaad..0000000 --- a/OWNERS_ALIASES +++ /dev/null @@ -1,14 +0,0 @@ -# See the OWNERS docs at https://go.k8s.io/owners#owners_aliases - -aliases: - # TODO: remove this alias, it will go stale in your repo, and in your repo - # you should have your own set of approvers (see OWNERS) - # in the original template repo, we must maintain this list to approve changes - # to the template itself - github-admin-team: - - cblecker - - fejta - - idvoretskyi - - mrbobbytables - - nikhita - - spiffxp diff --git a/PROJECT b/PROJECT new file mode 100644 index 0000000..f70bcb6 --- /dev/null +++ b/PROJECT @@ -0,0 +1,20 @@ +# Code generated by tool. DO NOT EDIT. +# This file is used to track the info used to scaffold your project +# and allow the plugins properly work. +# More info: https://book.kubebuilder.io/reference/project-config.html +domain: etcd.io +layout: +- go.kubebuilder.io/v4 +projectName: etcd-operator +repo: go.etcd.io/etcd-operator +resources: +- api: + crdVersion: v1 + namespaced: true + controller: true + domain: etcd.io + group: operator + kind: EtcdCluster + path: go.etcd.io/etcd-operator/api/v1alpha1 + version: v1alpha1 +version: "3" diff --git a/README.md b/README.md index 5bf9c1f..318f408 100644 --- a/README.md +++ b/README.md @@ -1,16 +1,7 @@ -# Kubernetes Template Project +# etcd-operator -The Kubernetes Template Project is a template for starting new projects in the GitHub organizations owned by Kubernetes. All Kubernetes projects, at minimum, must have the following files: +The official Kubernetes operator for etcd. -- a `README.md` outlining the project goals, sponsoring sig, and community contact information -- an `OWNERS` with the project leads listed as approvers ([docs on `OWNERS` files][owners]) -- a `CONTRIBUTING.md` outlining how to contribute to the project -- an unmodified copy of `code-of-conduct.md` from this repo, which outlines community behavior and the consequences of breaking the code -- a `LICENSE` which must be Apache 2.0 for code projects, or [Creative Commons 4.0] for documentation repositories, without any custom content -- a `SECURITY_CONTACTS` with the contact points for the Product Security Team - to reach out to for triaging and handling of incoming issues. They must agree to abide by the - [Embargo Policy](https://git.k8s.io/security/private-distributors-list.md#embargo-policy) - and will be removed and replaced if they violate that agreement. ## Community, discussion, contribution, and support @@ -18,12 +9,105 @@ Learn how to engage with the Kubernetes community on the [community page](http:/ You can reach the maintainers of this project at: -- [Slack](https://slack.k8s.io/) -- [Mailing List](https://groups.google.com/a/kubernetes.io/g/dev) +- [Slack channel](https://kubernetes.slack.com/messages/wg-etcd-operator) +- [Mailing list](https://groups.google.com/a/kubernetes.io/g/wg-etcd-operator) ### Code of conduct Participation in the Kubernetes community is governed by the [Kubernetes Code of Conduct](code-of-conduct.md). -[owners]: https://git.k8s.io/community/contributors/guide/owners.md -[Creative Commons 4.0]: https://git.k8s.io/website/LICENSE +## Getting Started + +### Prerequisites + +- go version v1.23.0+ +- docker version 17.03+. +- kubectl version v1.11.3+. +- Access to a Kubernetes v1.11.3+ cluster. + +### To Deploy on the cluster + +**Build and push your image to the location specified by `IMG`:** + +```sh +make docker-build docker-push IMG=/etcd-operator:tag +``` + +**NOTE:** This image ought to be published in the personal registry you specified. +And it is required to have access to pull the image from the working environment. +Make sure you have the proper permission to the registry if the above commands don’t work. + +**Install the CRDs into the cluster:** + +```sh +make install +``` + +**Deploy the Manager to the cluster with the image specified by `IMG`:** + +```sh +make deploy IMG=/etcd-operator:tag +``` + +> **NOTE**: If you encounter RBAC errors, you may need to grant yourself cluster-admin +privileges or be logged in as admin. + +**Create instances of your solution** +You can apply the samples (examples) from the config/sample: + +```sh +kubectl apply -k config/samples/ +``` + +>**NOTE**: Ensure that the samples has default values to test it out. + +### To Uninstall + +**Delete the instances (CRs) from the cluster:** + +```sh +kubectl delete -k config/samples/ +``` + +**Delete the APIs(CRDs) from the cluster:** + +```sh +make uninstall +``` + +**UnDeploy the controller from the cluster:** + +```sh +make undeploy +``` + +## Project Distribution + +Following are the steps to build the installer and distribute this project to users. + +1. Build the installer for the image built and published in the registry: + +```sh +make build-installer IMG=/etcd-operator:tag +``` + +NOTE: The makefile target mentioned above generates an 'install.yaml' +file in the dist directory. This file contains all the resources built +with Kustomize, which are necessary to install this project without +its dependencies. + +2. Using the installer + +Users can just run kubectl apply -f to install the project, i.e.: + +```sh +kubectl apply -f https://raw.githubusercontent.com//etcd-operator//dist/install.yaml +``` + +## Contributing + +// TODO(user): Add detailed information on how you would like others to contribute to this project + +**NOTE:** Run `make help` for more information on all potential `make` targets + +More information can be found via the [Kubebuilder Documentation](https://book.kubebuilder.io/introduction.html) diff --git a/SECURITY_CONTACTS b/SECURITY_CONTACTS index 0bd6f4b..e974c08 100644 --- a/SECURITY_CONTACTS +++ b/SECURITY_CONTACTS @@ -10,4 +10,8 @@ # DO NOT REPORT SECURITY VULNERABILITIES DIRECTLY TO THESE NAMES, FOLLOW THE # INSTRUCTIONS AT https://kubernetes.io/security/ -github-usernames-go-here +ahrtr +jmhbnz +hakman +jberkus +justinsb diff --git a/api/v1alpha1/etcdcluster_types.go b/api/v1alpha1/etcdcluster_types.go new file mode 100644 index 0000000..310f793 --- /dev/null +++ b/api/v1alpha1/etcdcluster_types.go @@ -0,0 +1,66 @@ +/* +Copyright 2024. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package v1alpha1 + +import ( + metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" +) + +// EDIT THIS FILE! THIS IS SCAFFOLDING FOR YOU TO OWN! +// NOTE: json tags are required. Any new fields you add must have json tags for the fields to be serialized. + +// EtcdClusterSpec defines the desired state of EtcdCluster. +type EtcdClusterSpec struct { + // INSERT ADDITIONAL SPEC FIELDS - desired state of cluster + // Important: Run "make" to regenerate code after modifying this file + + // Size is the expected size of the etcd cluster. + Size int `json:"size"` + // Version is the expected version of the etcd container image. + Version string `json:"version"` +} + +// EtcdClusterStatus defines the observed state of EtcdCluster. +type EtcdClusterStatus struct { + // INSERT ADDITIONAL STATUS FIELD - define observed state of cluster + // Important: Run "make" to regenerate code after modifying this file +} + +// +kubebuilder:object:root=true +// +kubebuilder:subresource:status + +// EtcdCluster is the Schema for the etcdclusters API. +type EtcdCluster struct { + metav1.TypeMeta `json:",inline"` + metav1.ObjectMeta `json:"metadata,omitempty"` + + Spec EtcdClusterSpec `json:"spec,omitempty"` + Status EtcdClusterStatus `json:"status,omitempty"` +} + +// +kubebuilder:object:root=true + +// EtcdClusterList contains a list of EtcdCluster. +type EtcdClusterList struct { + metav1.TypeMeta `json:",inline"` + metav1.ListMeta `json:"metadata,omitempty"` + Items []EtcdCluster `json:"items"` +} + +func init() { + SchemeBuilder.Register(&EtcdCluster{}, &EtcdClusterList{}) +} diff --git a/api/v1alpha1/groupversion_info.go b/api/v1alpha1/groupversion_info.go new file mode 100644 index 0000000..9acf45f --- /dev/null +++ b/api/v1alpha1/groupversion_info.go @@ -0,0 +1,36 @@ +/* +Copyright 2024. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +// Package v1alpha1 contains API Schema definitions for the operator v1alpha1 API group. +// +kubebuilder:object:generate=true +// +groupName=operator.etcd.io +package v1alpha1 + +import ( + "k8s.io/apimachinery/pkg/runtime/schema" + "sigs.k8s.io/controller-runtime/pkg/scheme" +) + +var ( + // GroupVersion is group version used to register these objects. + GroupVersion = schema.GroupVersion{Group: "operator.etcd.io", Version: "v1alpha1"} + + // 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. + AddToScheme = SchemeBuilder.AddToScheme +) diff --git a/api/v1alpha1/zz_generated.deepcopy.go b/api/v1alpha1/zz_generated.deepcopy.go new file mode 100644 index 0000000..2a890c6 --- /dev/null +++ b/api/v1alpha1/zz_generated.deepcopy.go @@ -0,0 +1,114 @@ +//go:build !ignore_autogenerated + +/* +Copyright 2024. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +// Code generated by controller-gen. DO NOT EDIT. + +package v1alpha1 + +import ( + runtime "k8s.io/apimachinery/pkg/runtime" +) + +// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil. +func (in *EtcdCluster) DeepCopyInto(out *EtcdCluster) { + *out = *in + out.TypeMeta = in.TypeMeta + in.ObjectMeta.DeepCopyInto(&out.ObjectMeta) + out.Spec = in.Spec + out.Status = in.Status +} + +// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new EtcdCluster. +func (in *EtcdCluster) DeepCopy() *EtcdCluster { + if in == nil { + return nil + } + out := new(EtcdCluster) + in.DeepCopyInto(out) + return out +} + +// DeepCopyObject is an autogenerated deepcopy function, copying the receiver, creating a new runtime.Object. +func (in *EtcdCluster) DeepCopyObject() runtime.Object { + if c := in.DeepCopy(); c != nil { + return c + } + return nil +} + +// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil. +func (in *EtcdClusterList) DeepCopyInto(out *EtcdClusterList) { + *out = *in + out.TypeMeta = in.TypeMeta + in.ListMeta.DeepCopyInto(&out.ListMeta) + if in.Items != nil { + in, out := &in.Items, &out.Items + *out = make([]EtcdCluster, len(*in)) + for i := range *in { + (*in)[i].DeepCopyInto(&(*out)[i]) + } + } +} + +// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new EtcdClusterList. +func (in *EtcdClusterList) DeepCopy() *EtcdClusterList { + if in == nil { + return nil + } + out := new(EtcdClusterList) + in.DeepCopyInto(out) + return out +} + +// DeepCopyObject is an autogenerated deepcopy function, copying the receiver, creating a new runtime.Object. +func (in *EtcdClusterList) DeepCopyObject() runtime.Object { + if c := in.DeepCopy(); c != nil { + return c + } + return nil +} + +// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil. +func (in *EtcdClusterSpec) DeepCopyInto(out *EtcdClusterSpec) { + *out = *in +} + +// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new EtcdClusterSpec. +func (in *EtcdClusterSpec) DeepCopy() *EtcdClusterSpec { + if in == nil { + return nil + } + out := new(EtcdClusterSpec) + in.DeepCopyInto(out) + return out +} + +// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil. +func (in *EtcdClusterStatus) DeepCopyInto(out *EtcdClusterStatus) { + *out = *in +} + +// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new EtcdClusterStatus. +func (in *EtcdClusterStatus) DeepCopy() *EtcdClusterStatus { + if in == nil { + return nil + } + out := new(EtcdClusterStatus) + in.DeepCopyInto(out) + return out +} diff --git a/cmd/main.go b/cmd/main.go new file mode 100644 index 0000000..7a1c99a --- /dev/null +++ b/cmd/main.go @@ -0,0 +1,168 @@ +/* +Copyright 2024. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package main + +import ( + "crypto/tls" + "flag" + "os" + + // Import all Kubernetes client auth plugins (e.g. Azure, GCP, OIDC, etc.) + // to ensure that exec-entrypoint and run can make use of them. + _ "k8s.io/client-go/plugin/pkg/client/auth" + + "k8s.io/apimachinery/pkg/runtime" + utilruntime "k8s.io/apimachinery/pkg/util/runtime" + clientgoscheme "k8s.io/client-go/kubernetes/scheme" + ctrl "sigs.k8s.io/controller-runtime" + "sigs.k8s.io/controller-runtime/pkg/healthz" + "sigs.k8s.io/controller-runtime/pkg/log/zap" + "sigs.k8s.io/controller-runtime/pkg/metrics/filters" + metricsserver "sigs.k8s.io/controller-runtime/pkg/metrics/server" + "sigs.k8s.io/controller-runtime/pkg/webhook" + + operatorv1alpha1 "go.etcd.io/etcd-operator/api/v1alpha1" + "go.etcd.io/etcd-operator/internal/controller" + // +kubebuilder:scaffold:imports +) + +var ( + scheme = runtime.NewScheme() + setupLog = ctrl.Log.WithName("setup") +) + +func init() { + utilruntime.Must(clientgoscheme.AddToScheme(scheme)) + + utilruntime.Must(operatorv1alpha1.AddToScheme(scheme)) + // +kubebuilder:scaffold:scheme +} + +func main() { + var metricsAddr string + var enableLeaderElection bool + var probeAddr string + var secureMetrics bool + var enableHTTP2 bool + var tlsOpts []func(*tls.Config) + flag.StringVar(&metricsAddr, "metrics-bind-address", "0", "The address the metrics endpoint binds to. "+ + "Use :8443 for HTTPS or :8080 for HTTP, or leave as 0 to disable the metrics service.") + flag.StringVar(&probeAddr, "health-probe-bind-address", ":8081", "The address the probe endpoint binds to.") + flag.BoolVar(&enableLeaderElection, "leader-elect", false, + "Enable leader election for controller manager. "+ + "Enabling this will ensure there is only one active controller manager.") + flag.BoolVar(&secureMetrics, "metrics-secure", true, + "If set, the metrics endpoint is served securely via HTTPS. Use --metrics-secure=false to use HTTP instead.") + flag.BoolVar(&enableHTTP2, "enable-http2", false, + "If set, HTTP/2 will be enabled for the metrics and webhook servers") + opts := zap.Options{ + Development: true, + } + opts.BindFlags(flag.CommandLine) + flag.Parse() + + ctrl.SetLogger(zap.New(zap.UseFlagOptions(&opts))) + + // if the enable-http2 flag is false (the default), http/2 should be disabled + // due to its vulnerabilities. More specifically, disabling http/2 will + // prevent from being vulnerable to the HTTP/2 Stream Cancellation and + // Rapid Reset CVEs. For more information see: + // - https://github.com/advisories/GHSA-qppj-fm5r-hxr3 + // - https://github.com/advisories/GHSA-4374-p667-p6c8 + disableHTTP2 := func(c *tls.Config) { + setupLog.Info("disabling http/2") + c.NextProtos = []string{"http/1.1"} + } + + if !enableHTTP2 { + tlsOpts = append(tlsOpts, disableHTTP2) + } + + webhookServer := webhook.NewServer(webhook.Options{ + TLSOpts: tlsOpts, + }) + + // Metrics endpoint is enabled in 'config/default/kustomization.yaml'. The Metrics options configure the server. + // More info: + // - https://pkg.go.dev/sigs.k8s.io/controller-runtime@v0.19.1/pkg/metrics/server + // - https://book.kubebuilder.io/reference/metrics.html + metricsServerOptions := metricsserver.Options{ + BindAddress: metricsAddr, + SecureServing: secureMetrics, + TLSOpts: tlsOpts, + } + + if secureMetrics { + // FilterProvider is used to protect the metrics endpoint with authn/authz. + // These configurations ensure that only authorized users and service accounts + // can access the metrics endpoint. The RBAC are configured in 'config/rbac/kustomization.yaml'. More info: + // https://pkg.go.dev/sigs.k8s.io/controller-runtime@v0.19.1/pkg/metrics/filters#WithAuthenticationAndAuthorization + metricsServerOptions.FilterProvider = filters.WithAuthenticationAndAuthorization + + // TODO(user): If CertDir, CertName, and KeyName are not specified, controller-runtime will automatically + // generate self-signed certificates for the metrics server. While convenient for development and testing, + // this setup is not recommended for production. + } + + mgr, err := ctrl.NewManager(ctrl.GetConfigOrDie(), ctrl.Options{ + Scheme: scheme, + Metrics: metricsServerOptions, + WebhookServer: webhookServer, + HealthProbeBindAddress: probeAddr, + LeaderElection: enableLeaderElection, + LeaderElectionID: "cc4a0f4b.etcd.io", + // LeaderElectionReleaseOnCancel defines if the leader should step down voluntarily + // when the Manager ends. This requires the binary to immediately end when the + // Manager is stopped, otherwise, this setting is unsafe. Setting this significantly + // speeds up voluntary leader transitions as the new leader don't have to wait + // LeaseDuration time first. + // + // In the default scaffold provided, the program ends immediately after + // the manager stops, so would be fine to enable this option. However, + // if you are doing or is intended to do any operation such as perform cleanups + // after the manager stops then its usage might be unsafe. + // LeaderElectionReleaseOnCancel: true, + }) + if err != nil { + setupLog.Error(err, "unable to start manager") + os.Exit(1) + } + + if err = (&controller.EtcdClusterReconciler{ + Client: mgr.GetClient(), + Scheme: mgr.GetScheme(), + }).SetupWithManager(mgr); err != nil { + setupLog.Error(err, "unable to create controller", "controller", "EtcdCluster") + os.Exit(1) + } + // +kubebuilder:scaffold:builder + + if err := mgr.AddHealthzCheck("healthz", healthz.Ping); err != nil { + setupLog.Error(err, "unable to set up health check") + os.Exit(1) + } + if err := mgr.AddReadyzCheck("readyz", healthz.Ping); err != nil { + setupLog.Error(err, "unable to set up ready check") + os.Exit(1) + } + + setupLog.Info("starting manager") + if err := mgr.Start(ctrl.SetupSignalHandler()); err != nil { + setupLog.Error(err, "problem running manager") + os.Exit(1) + } +} diff --git a/config/crd/bases/operator.etcd.io_etcdclusters.yaml b/config/crd/bases/operator.etcd.io_etcdclusters.yaml new file mode 100644 index 0000000..0cb092a --- /dev/null +++ b/config/crd/bases/operator.etcd.io_etcdclusters.yaml @@ -0,0 +1,60 @@ +--- +apiVersion: apiextensions.k8s.io/v1 +kind: CustomResourceDefinition +metadata: + annotations: + controller-gen.kubebuilder.io/version: v0.16.4 + name: etcdclusters.operator.etcd.io +spec: + group: operator.etcd.io + names: + kind: EtcdCluster + listKind: EtcdClusterList + plural: etcdclusters + singular: etcdcluster + scope: Namespaced + versions: + - name: v1alpha1 + schema: + openAPIV3Schema: + description: EtcdCluster is the Schema for the etcdclusters API. + properties: + apiVersion: + description: |- + APIVersion defines the versioned schema of this representation of an object. + Servers should convert recognized schemas to the latest internal value, and + may reject unrecognized values. + More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#resources + type: string + kind: + description: |- + Kind is a string value representing the REST resource this object represents. + Servers may infer this from the endpoint the client submits requests to. + Cannot be updated. + In CamelCase. + More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds + type: string + metadata: + type: object + spec: + description: EtcdClusterSpec defines the desired state of EtcdCluster. + properties: + size: + description: Size is the expected size of the etcd cluster. + type: integer + version: + description: Version is the expected version of the etcd container + image. + type: string + required: + - size + - version + type: object + status: + description: EtcdClusterStatus defines the observed state of EtcdCluster. + type: object + type: object + served: true + storage: true + subresources: + status: {} diff --git a/config/crd/kustomization.yaml b/config/crd/kustomization.yaml new file mode 100644 index 0000000..ca614b9 --- /dev/null +++ b/config/crd/kustomization.yaml @@ -0,0 +1,20 @@ +# This kustomization.yaml is not intended to be run by itself, +# since it depends on service name and namespace that are out of this kustomize package. +# It should be run by config/default +resources: +- bases/operator.etcd.io_etcdclusters.yaml +# +kubebuilder:scaffold:crdkustomizeresource + +patches: +# [WEBHOOK] To enable webhook, uncomment all the sections with [WEBHOOK] prefix. +# patches here are for enabling the conversion webhook for each CRD +# +kubebuilder:scaffold:crdkustomizewebhookpatch + +# [CERTMANAGER] To enable cert-manager, uncomment all the sections with [CERTMANAGER] prefix. +# patches here are for enabling the CA injection for each CRD +# +kubebuilder:scaffold:crdkustomizecainjectionpatch + +# [WEBHOOK] To enable webhook, uncomment the following section +# the following config is for teaching kustomize how to do kustomization for CRDs. +#configurations: +#- kustomizeconfig.yaml diff --git a/config/crd/kustomizeconfig.yaml b/config/crd/kustomizeconfig.yaml new file mode 100644 index 0000000..ec5c150 --- /dev/null +++ b/config/crd/kustomizeconfig.yaml @@ -0,0 +1,19 @@ +# This file is for teaching kustomize how to substitute name and namespace reference in CRD +nameReference: +- kind: Service + version: v1 + fieldSpecs: + - kind: CustomResourceDefinition + version: v1 + group: apiextensions.k8s.io + path: spec/conversion/webhook/clientConfig/service/name + +namespace: +- kind: CustomResourceDefinition + version: v1 + group: apiextensions.k8s.io + path: spec/conversion/webhook/clientConfig/service/namespace + create: false + +varReference: +- path: metadata/annotations diff --git a/config/default/kustomization.yaml b/config/default/kustomization.yaml new file mode 100644 index 0000000..792ef45 --- /dev/null +++ b/config/default/kustomization.yaml @@ -0,0 +1,177 @@ +# Adds namespace to all resources. +namespace: etcd-operator-system + +# Value of this field is prepended to the +# names of all resources, e.g. a deployment named +# "wordpress" becomes "alices-wordpress". +# Note that it should also match with the prefix (text before '-') of the namespace +# field above. +namePrefix: etcd-operator- + +# Labels to add to all resources and selectors. +#labels: +#- includeSelectors: true +# pairs: +# someName: someValue + +resources: +- ../crd +- ../rbac +- ../manager +# [WEBHOOK] To enable webhook, uncomment all the sections with [WEBHOOK] prefix including the one in +# crd/kustomization.yaml +#- ../webhook +# [CERTMANAGER] To enable cert-manager, uncomment all sections with 'CERTMANAGER'. 'WEBHOOK' components are required. +#- ../certmanager +# [PROMETHEUS] To enable prometheus monitor, uncomment all sections with 'PROMETHEUS'. +#- ../prometheus +# [METRICS] Expose the controller manager metrics service. +- metrics_service.yaml +# [NETWORK POLICY] Protect the /metrics endpoint and Webhook Server with NetworkPolicy. +# Only Pod(s) running a namespace labeled with 'metrics: enabled' will be able to gather the metrics. +# Only CR(s) which requires webhooks and are applied on namespaces labeled with 'webhooks: enabled' will +# be able to communicate with the Webhook Server. +#- ../network-policy + +# Uncomment the patches line if you enable Metrics, and/or are using webhooks and cert-manager +patches: +# [METRICS] The following patch will enable the metrics endpoint using HTTPS and the port :8443. +# More info: https://book.kubebuilder.io/reference/metrics +- path: manager_metrics_patch.yaml + target: + kind: Deployment + +# [WEBHOOK] To enable webhook, uncomment all the sections with [WEBHOOK] prefix including the one in +# crd/kustomization.yaml +#- path: manager_webhook_patch.yaml + +# [CERTMANAGER] To enable cert-manager, uncomment all sections with 'CERTMANAGER' prefix. +# Uncomment the following replacements to add the cert-manager CA injection annotations +#replacements: +# - source: # Uncomment the following block if you have any webhook +# kind: Service +# version: v1 +# name: webhook-service +# fieldPath: .metadata.name # Name of the service +# targets: +# - select: +# kind: Certificate +# group: cert-manager.io +# version: v1 +# fieldPaths: +# - .spec.dnsNames.0 +# - .spec.dnsNames.1 +# options: +# delimiter: '.' +# index: 0 +# create: true +# - source: +# kind: Service +# version: v1 +# name: webhook-service +# fieldPath: .metadata.namespace # Namespace of the service +# targets: +# - select: +# kind: Certificate +# group: cert-manager.io +# version: v1 +# fieldPaths: +# - .spec.dnsNames.0 +# - .spec.dnsNames.1 +# options: +# delimiter: '.' +# index: 1 +# create: true +# +# - source: # Uncomment the following block if you have a ValidatingWebhook (--programmatic-validation) +# kind: Certificate +# group: cert-manager.io +# version: v1 +# name: serving-cert # This name should match the one in certificate.yaml +# fieldPath: .metadata.namespace # Namespace of the certificate CR +# targets: +# - select: +# kind: ValidatingWebhookConfiguration +# fieldPaths: +# - .metadata.annotations.[cert-manager.io/inject-ca-from] +# options: +# delimiter: '/' +# index: 0 +# create: true +# - source: +# kind: Certificate +# group: cert-manager.io +# version: v1 +# name: serving-cert # This name should match the one in certificate.yaml +# fieldPath: .metadata.name +# targets: +# - select: +# kind: ValidatingWebhookConfiguration +# fieldPaths: +# - .metadata.annotations.[cert-manager.io/inject-ca-from] +# options: +# delimiter: '/' +# index: 1 +# create: true +# +# - source: # Uncomment the following block if you have a DefaultingWebhook (--defaulting ) +# kind: Certificate +# group: cert-manager.io +# version: v1 +# name: serving-cert # This name should match the one in certificate.yaml +# fieldPath: .metadata.namespace # Namespace of the certificate CR +# targets: +# - select: +# kind: MutatingWebhookConfiguration +# fieldPaths: +# - .metadata.annotations.[cert-manager.io/inject-ca-from] +# options: +# delimiter: '/' +# index: 0 +# create: true +# - source: +# kind: Certificate +# group: cert-manager.io +# version: v1 +# name: serving-cert # This name should match the one in certificate.yaml +# fieldPath: .metadata.name +# targets: +# - select: +# kind: MutatingWebhookConfiguration +# fieldPaths: +# - .metadata.annotations.[cert-manager.io/inject-ca-from] +# options: +# delimiter: '/' +# index: 1 +# create: true +# +# - source: # Uncomment the following block if you have a ConversionWebhook (--conversion) +# kind: Certificate +# group: cert-manager.io +# version: v1 +# name: serving-cert # This name should match the one in certificate.yaml +# fieldPath: .metadata.namespace # Namespace of the certificate CR +# targets: +# - select: +# kind: CustomResourceDefinition +# fieldPaths: +# - .metadata.annotations.[cert-manager.io/inject-ca-from] +# options: +# delimiter: '/' +# index: 0 +# create: true +# - source: +# kind: Certificate +# group: cert-manager.io +# version: v1 +# name: serving-cert # This name should match the one in certificate.yaml +# fieldPath: .metadata.name +# targets: +# - select: +# kind: CustomResourceDefinition +# fieldPaths: +# - .metadata.annotations.[cert-manager.io/inject-ca-from] +# options: +# delimiter: '/' +# index: 1 +# create: true diff --git a/config/default/manager_metrics_patch.yaml b/config/default/manager_metrics_patch.yaml new file mode 100644 index 0000000..2aaef65 --- /dev/null +++ b/config/default/manager_metrics_patch.yaml @@ -0,0 +1,4 @@ +# This patch adds the args to allow exposing the metrics endpoint using HTTPS +- op: add + path: /spec/template/spec/containers/0/args/0 + value: --metrics-bind-address=:8443 diff --git a/config/default/metrics_service.yaml b/config/default/metrics_service.yaml new file mode 100644 index 0000000..07ffb27 --- /dev/null +++ b/config/default/metrics_service.yaml @@ -0,0 +1,17 @@ +apiVersion: v1 +kind: Service +metadata: + labels: + control-plane: controller-manager + app.kubernetes.io/name: etcd-operator + app.kubernetes.io/managed-by: kustomize + name: controller-manager-metrics-service + namespace: system +spec: + ports: + - name: https + port: 8443 + protocol: TCP + targetPort: 8443 + selector: + control-plane: controller-manager diff --git a/config/manager/kustomization.yaml b/config/manager/kustomization.yaml new file mode 100644 index 0000000..5c5f0b8 --- /dev/null +++ b/config/manager/kustomization.yaml @@ -0,0 +1,2 @@ +resources: +- manager.yaml diff --git a/config/manager/manager.yaml b/config/manager/manager.yaml new file mode 100644 index 0000000..c3164c4 --- /dev/null +++ b/config/manager/manager.yaml @@ -0,0 +1,95 @@ +apiVersion: v1 +kind: Namespace +metadata: + labels: + control-plane: controller-manager + app.kubernetes.io/name: etcd-operator + app.kubernetes.io/managed-by: kustomize + name: system +--- +apiVersion: apps/v1 +kind: Deployment +metadata: + name: controller-manager + namespace: system + labels: + control-plane: controller-manager + app.kubernetes.io/name: etcd-operator + app.kubernetes.io/managed-by: kustomize +spec: + selector: + matchLabels: + control-plane: controller-manager + replicas: 1 + template: + metadata: + annotations: + kubectl.kubernetes.io/default-container: manager + labels: + control-plane: controller-manager + spec: + # TODO(user): Uncomment the following code to configure the nodeAffinity expression + # according to the platforms which are supported by your solution. + # It is considered best practice to support multiple architectures. You can + # build your manager image using the makefile target docker-buildx. + # affinity: + # nodeAffinity: + # requiredDuringSchedulingIgnoredDuringExecution: + # nodeSelectorTerms: + # - matchExpressions: + # - key: kubernetes.io/arch + # operator: In + # values: + # - amd64 + # - arm64 + # - ppc64le + # - s390x + # - key: kubernetes.io/os + # operator: In + # values: + # - linux + securityContext: + runAsNonRoot: true + # TODO(user): For common cases that do not require escalating privileges + # it is recommended to ensure that all your Pods/Containers are restrictive. + # More info: https://kubernetes.io/docs/concepts/security/pod-security-standards/#restricted + # Please uncomment the following code if your project does NOT have to work on old Kubernetes + # versions < 1.19 or on vendors versions which do NOT support this field by default (i.e. Openshift < 4.11 ). + # seccompProfile: + # type: RuntimeDefault + containers: + - command: + - /manager + args: + - --leader-elect + - --health-probe-bind-address=:8081 + image: controller:latest + name: manager + securityContext: + allowPrivilegeEscalation: false + capabilities: + drop: + - "ALL" + livenessProbe: + httpGet: + path: /healthz + port: 8081 + initialDelaySeconds: 15 + periodSeconds: 20 + readinessProbe: + httpGet: + path: /readyz + port: 8081 + initialDelaySeconds: 5 + periodSeconds: 10 + # TODO(user): Configure the resources accordingly based on the project requirements. + # More info: https://kubernetes.io/docs/concepts/configuration/manage-resources-containers/ + resources: + limits: + cpu: 500m + memory: 128Mi + requests: + cpu: 10m + memory: 64Mi + serviceAccountName: controller-manager + terminationGracePeriodSeconds: 10 diff --git a/config/network-policy/allow-metrics-traffic.yaml b/config/network-policy/allow-metrics-traffic.yaml new file mode 100644 index 0000000..9f83870 --- /dev/null +++ b/config/network-policy/allow-metrics-traffic.yaml @@ -0,0 +1,26 @@ +# This NetworkPolicy allows ingress traffic +# with Pods running on namespaces labeled with 'metrics: enabled'. Only Pods on those +# namespaces are able to gathering data from the metrics endpoint. +apiVersion: networking.k8s.io/v1 +kind: NetworkPolicy +metadata: + labels: + app.kubernetes.io/name: etcd-operator + app.kubernetes.io/managed-by: kustomize + name: allow-metrics-traffic + namespace: system +spec: + podSelector: + matchLabels: + control-plane: controller-manager + policyTypes: + - Ingress + ingress: + # This allows ingress traffic from any namespace with the label metrics: enabled + - from: + - namespaceSelector: + matchLabels: + metrics: enabled # Only from namespaces with this label + ports: + - port: 8443 + protocol: TCP diff --git a/config/network-policy/kustomization.yaml b/config/network-policy/kustomization.yaml new file mode 100644 index 0000000..ec0fb5e --- /dev/null +++ b/config/network-policy/kustomization.yaml @@ -0,0 +1,2 @@ +resources: +- allow-metrics-traffic.yaml diff --git a/config/prometheus/kustomization.yaml b/config/prometheus/kustomization.yaml new file mode 100644 index 0000000..ed13716 --- /dev/null +++ b/config/prometheus/kustomization.yaml @@ -0,0 +1,2 @@ +resources: +- monitor.yaml diff --git a/config/prometheus/monitor.yaml b/config/prometheus/monitor.yaml new file mode 100644 index 0000000..b6cad92 --- /dev/null +++ b/config/prometheus/monitor.yaml @@ -0,0 +1,30 @@ +# Prometheus Monitor Service (Metrics) +apiVersion: monitoring.coreos.com/v1 +kind: ServiceMonitor +metadata: + labels: + control-plane: controller-manager + app.kubernetes.io/name: etcd-operator + app.kubernetes.io/managed-by: kustomize + name: controller-manager-metrics-monitor + namespace: system +spec: + endpoints: + - path: /metrics + port: https # Ensure this is the name of the port that exposes HTTPS metrics + scheme: https + bearerTokenFile: /var/run/secrets/kubernetes.io/serviceaccount/token + tlsConfig: + # TODO(user): The option insecureSkipVerify: true is not recommended for production since it disables + # certificate verification. This poses a significant security risk by making the system vulnerable to + # man-in-the-middle attacks, where an attacker could intercept and manipulate the communication between + # Prometheus and the monitored services. This could lead to unauthorized access to sensitive metrics data, + # compromising the integrity and confidentiality of the information. + # Please use the following options for secure configurations: + # caFile: /etc/metrics-certs/ca.crt + # certFile: /etc/metrics-certs/tls.crt + # keyFile: /etc/metrics-certs/tls.key + insecureSkipVerify: true + selector: + matchLabels: + control-plane: controller-manager diff --git a/config/rbac/etcdcluster_editor_role.yaml b/config/rbac/etcdcluster_editor_role.yaml new file mode 100644 index 0000000..2bbfd5a --- /dev/null +++ b/config/rbac/etcdcluster_editor_role.yaml @@ -0,0 +1,27 @@ +# permissions for end users to edit etcdclusters. +apiVersion: rbac.authorization.k8s.io/v1 +kind: ClusterRole +metadata: + labels: + app.kubernetes.io/name: etcd-operator + app.kubernetes.io/managed-by: kustomize + name: etcdcluster-editor-role +rules: +- apiGroups: + - operator.etcd.io + resources: + - etcdclusters + verbs: + - create + - delete + - get + - list + - patch + - update + - watch +- apiGroups: + - operator.etcd.io + resources: + - etcdclusters/status + verbs: + - get diff --git a/config/rbac/etcdcluster_viewer_role.yaml b/config/rbac/etcdcluster_viewer_role.yaml new file mode 100644 index 0000000..56a0c9a --- /dev/null +++ b/config/rbac/etcdcluster_viewer_role.yaml @@ -0,0 +1,23 @@ +# permissions for end users to view etcdclusters. +apiVersion: rbac.authorization.k8s.io/v1 +kind: ClusterRole +metadata: + labels: + app.kubernetes.io/name: etcd-operator + app.kubernetes.io/managed-by: kustomize + name: etcdcluster-viewer-role +rules: +- apiGroups: + - operator.etcd.io + resources: + - etcdclusters + verbs: + - get + - list + - watch +- apiGroups: + - operator.etcd.io + resources: + - etcdclusters/status + verbs: + - get diff --git a/config/rbac/kustomization.yaml b/config/rbac/kustomization.yaml new file mode 100644 index 0000000..ae91bf7 --- /dev/null +++ b/config/rbac/kustomization.yaml @@ -0,0 +1,27 @@ +resources: +# All RBAC will be applied under this service account in +# the deployment namespace. You may comment out this resource +# if your manager will use a service account that exists at +# runtime. Be sure to update RoleBinding and ClusterRoleBinding +# subjects if changing service account names. +- service_account.yaml +- role.yaml +- role_binding.yaml +- leader_election_role.yaml +- leader_election_role_binding.yaml +# The following RBAC configurations are used to protect +# the metrics endpoint with authn/authz. These configurations +# ensure that only authorized users and service accounts +# can access the metrics endpoint. Comment the following +# permissions if you want to disable this protection. +# More info: https://book.kubebuilder.io/reference/metrics.html +- metrics_auth_role.yaml +- metrics_auth_role_binding.yaml +- metrics_reader_role.yaml +# For each CRD, "Editor" and "Viewer" roles are scaffolded by +# default, aiding admins in cluster management. Those roles are +# not used by the Project itself. You can comment the following lines +# if you do not want those helpers be installed with your Project. +- etcdcluster_editor_role.yaml +- etcdcluster_viewer_role.yaml + diff --git a/config/rbac/leader_election_role.yaml b/config/rbac/leader_election_role.yaml new file mode 100644 index 0000000..ef5189e --- /dev/null +++ b/config/rbac/leader_election_role.yaml @@ -0,0 +1,40 @@ +# permissions to do leader election. +apiVersion: rbac.authorization.k8s.io/v1 +kind: Role +metadata: + labels: + app.kubernetes.io/name: etcd-operator + app.kubernetes.io/managed-by: kustomize + name: leader-election-role +rules: +- apiGroups: + - "" + resources: + - configmaps + verbs: + - get + - list + - watch + - create + - update + - patch + - delete +- apiGroups: + - coordination.k8s.io + resources: + - leases + verbs: + - get + - list + - watch + - create + - update + - patch + - delete +- apiGroups: + - "" + resources: + - events + verbs: + - create + - patch diff --git a/config/rbac/leader_election_role_binding.yaml b/config/rbac/leader_election_role_binding.yaml new file mode 100644 index 0000000..f7cf464 --- /dev/null +++ b/config/rbac/leader_election_role_binding.yaml @@ -0,0 +1,15 @@ +apiVersion: rbac.authorization.k8s.io/v1 +kind: RoleBinding +metadata: + labels: + app.kubernetes.io/name: etcd-operator + app.kubernetes.io/managed-by: kustomize + name: leader-election-rolebinding +roleRef: + apiGroup: rbac.authorization.k8s.io + kind: Role + name: leader-election-role +subjects: +- kind: ServiceAccount + name: controller-manager + namespace: system diff --git a/config/rbac/metrics_auth_role.yaml b/config/rbac/metrics_auth_role.yaml new file mode 100644 index 0000000..32d2e4e --- /dev/null +++ b/config/rbac/metrics_auth_role.yaml @@ -0,0 +1,17 @@ +apiVersion: rbac.authorization.k8s.io/v1 +kind: ClusterRole +metadata: + name: metrics-auth-role +rules: +- apiGroups: + - authentication.k8s.io + resources: + - tokenreviews + verbs: + - create +- apiGroups: + - authorization.k8s.io + resources: + - subjectaccessreviews + verbs: + - create diff --git a/config/rbac/metrics_auth_role_binding.yaml b/config/rbac/metrics_auth_role_binding.yaml new file mode 100644 index 0000000..e775d67 --- /dev/null +++ b/config/rbac/metrics_auth_role_binding.yaml @@ -0,0 +1,12 @@ +apiVersion: rbac.authorization.k8s.io/v1 +kind: ClusterRoleBinding +metadata: + name: metrics-auth-rolebinding +roleRef: + apiGroup: rbac.authorization.k8s.io + kind: ClusterRole + name: metrics-auth-role +subjects: +- kind: ServiceAccount + name: controller-manager + namespace: system diff --git a/config/rbac/metrics_reader_role.yaml b/config/rbac/metrics_reader_role.yaml new file mode 100644 index 0000000..51a75db --- /dev/null +++ b/config/rbac/metrics_reader_role.yaml @@ -0,0 +1,9 @@ +apiVersion: rbac.authorization.k8s.io/v1 +kind: ClusterRole +metadata: + name: metrics-reader +rules: +- nonResourceURLs: + - "/metrics" + verbs: + - get diff --git a/config/rbac/role.yaml b/config/rbac/role.yaml new file mode 100644 index 0000000..0f57b69 --- /dev/null +++ b/config/rbac/role.yaml @@ -0,0 +1,32 @@ +--- +apiVersion: rbac.authorization.k8s.io/v1 +kind: ClusterRole +metadata: + name: manager-role +rules: +- apiGroups: + - operator.etcd.io + resources: + - etcdclusters + verbs: + - create + - delete + - get + - list + - patch + - update + - watch +- apiGroups: + - operator.etcd.io + resources: + - etcdclusters/finalizers + verbs: + - update +- apiGroups: + - operator.etcd.io + resources: + - etcdclusters/status + verbs: + - get + - patch + - update diff --git a/config/rbac/role_binding.yaml b/config/rbac/role_binding.yaml new file mode 100644 index 0000000..4d24efd --- /dev/null +++ b/config/rbac/role_binding.yaml @@ -0,0 +1,15 @@ +apiVersion: rbac.authorization.k8s.io/v1 +kind: ClusterRoleBinding +metadata: + labels: + app.kubernetes.io/name: etcd-operator + app.kubernetes.io/managed-by: kustomize + name: manager-rolebinding +roleRef: + apiGroup: rbac.authorization.k8s.io + kind: ClusterRole + name: manager-role +subjects: +- kind: ServiceAccount + name: controller-manager + namespace: system diff --git a/config/rbac/service_account.yaml b/config/rbac/service_account.yaml new file mode 100644 index 0000000..fa4a570 --- /dev/null +++ b/config/rbac/service_account.yaml @@ -0,0 +1,8 @@ +apiVersion: v1 +kind: ServiceAccount +metadata: + labels: + app.kubernetes.io/name: etcd-operator + app.kubernetes.io/managed-by: kustomize + name: controller-manager + namespace: system diff --git a/config/samples/kustomization.yaml b/config/samples/kustomization.yaml new file mode 100644 index 0000000..f3c97ab --- /dev/null +++ b/config/samples/kustomization.yaml @@ -0,0 +1,4 @@ +## Append samples of your project ## +resources: +- operator_v1alpha1_etcdcluster.yaml +# +kubebuilder:scaffold:manifestskustomizesamples diff --git a/config/samples/operator_v1alpha1_etcdcluster.yaml b/config/samples/operator_v1alpha1_etcdcluster.yaml new file mode 100644 index 0000000..ea4d3bf --- /dev/null +++ b/config/samples/operator_v1alpha1_etcdcluster.yaml @@ -0,0 +1,9 @@ +apiVersion: operator.etcd.io/v1alpha1 +kind: EtcdCluster +metadata: + labels: + app.kubernetes.io/name: etcd-operator + app.kubernetes.io/managed-by: kustomize + name: etcdcluster-sample +spec: + # TODO(user): Add fields here diff --git a/docs/api-references/config.yaml b/docs/api-references/config.yaml new file mode 100644 index 0000000..2e0b413 --- /dev/null +++ b/docs/api-references/config.yaml @@ -0,0 +1,11 @@ +processor: + ignoreGroupVersions: + - "GVK" + ignoreTypes: + - "Embedded[2-4]$" + ignoreFields: + - "status$" + - "TypeMeta$" + customMarkers: + - name: "hidefromdoc" + target: field diff --git a/docs/api-references/docs.md b/docs/api-references/docs.md new file mode 100644 index 0000000..b37b974 --- /dev/null +++ b/docs/api-references/docs.md @@ -0,0 +1,72 @@ +# ETCD Operator API References + +## Packages +- [operator.etcd.io/v1alpha1](#operatoretcdiov1alpha1) + + +## operator.etcd.io/v1alpha1 + +Package v1alpha1 contains API Schema definitions for the operator v1alpha1 API group. + +### Resource Types +- [EtcdCluster](#etcdcluster) +- [EtcdClusterList](#etcdclusterlist) + + + +#### EtcdCluster + + + +EtcdCluster is the Schema for the etcdclusters API. + + + +_Appears in:_ +- [EtcdClusterList](#etcdclusterlist) + +| Field | Description | Default | Validation | +| --- | --- | --- | --- | +| `apiVersion` _string_ | `operator.etcd.io/v1alpha1` | | | +| `kind` _string_ | `EtcdCluster` | | | +| `metadata` _[ObjectMeta](https://kubernetes.io/docs/reference/generated/kubernetes-api/v/#objectmeta-v1-meta)_ | Refer to Kubernetes API documentation for fields of `metadata`. | | | +| `spec` _[EtcdClusterSpec](#etcdclusterspec)_ | | | | + + +#### EtcdClusterList + + + +EtcdClusterList contains a list of EtcdCluster. + + + + + +| Field | Description | Default | Validation | +| --- | --- | --- | --- | +| `apiVersion` _string_ | `operator.etcd.io/v1alpha1` | | | +| `kind` _string_ | `EtcdClusterList` | | | +| `metadata` _[ListMeta](https://kubernetes.io/docs/reference/generated/kubernetes-api/v/#listmeta-v1-meta)_ | Refer to Kubernetes API documentation for fields of `metadata`. | | | +| `items` _[EtcdCluster](#etcdcluster) array_ | | | | + + +#### EtcdClusterSpec + + + +EtcdClusterSpec defines the desired state of EtcdCluster. + + + +_Appears in:_ +- [EtcdCluster](#etcdcluster) + +| Field | Description | Default | Validation | +| --- | --- | --- | --- | +| `size` _integer_ | Size is the expected size of the etcd cluster. | | | +| `version` _string_ | Version is the expected version of the etcd container image. | | | + + + + diff --git a/docs/api-references/template/gv_details.tpl b/docs/api-references/template/gv_details.tpl new file mode 100644 index 0000000..30ad0d7 --- /dev/null +++ b/docs/api-references/template/gv_details.tpl @@ -0,0 +1,19 @@ +{{- define "gvDetails" -}} +{{- $gv := . -}} + +## {{ $gv.GroupVersionString }} + +{{ $gv.Doc }} + +{{- if $gv.Kinds }} +### Resource Types +{{- range $gv.SortedKinds }} +- {{ $gv.TypeForKind . | markdownRenderTypeLink }} +{{- end }} +{{ end }} + +{{ range $gv.SortedTypes }} +{{ template "type" . }} +{{ end }} + +{{- end -}} diff --git a/docs/api-references/template/gv_list.tpl b/docs/api-references/template/gv_list.tpl new file mode 100644 index 0000000..8342cbb --- /dev/null +++ b/docs/api-references/template/gv_list.tpl @@ -0,0 +1,15 @@ +{{- define "gvList" -}} +{{- $groupVersions := . -}} + +# ETCD Operator API References + +## Packages +{{- range $groupVersions }} +- {{ markdownRenderGVLink . }} +{{- end }} + +{{ range $groupVersions }} +{{ template "gvDetails" . }} +{{ end }} + +{{- end -}} diff --git a/docs/api-references/template/type.tpl b/docs/api-references/template/type.tpl new file mode 100644 index 0000000..a59d13c --- /dev/null +++ b/docs/api-references/template/type.tpl @@ -0,0 +1,49 @@ +{{- define "type" -}} +{{- $type := . -}} +{{- if markdownShouldRenderType $type -}} + +#### {{ $type.Name }} + +{{ if $type.IsAlias }}_Underlying type:_ _{{ markdownRenderTypeLink $type.UnderlyingType }}_{{ end }} + +{{ $type.Doc }} + +{{ if $type.Validation -}} +_Validation:_ +{{- range $type.Validation }} +- {{ . }} +{{- end }} +{{- end }} + +{{ if $type.References -}} +_Appears in:_ +{{- range $type.SortedReferences }} +- {{ markdownRenderTypeLink . }} +{{- end }} +{{- end }} + +{{ if $type.Members -}} +| Field | Description | Default | Validation | +| --- | --- | --- | --- | +{{ if $type.GVK -}} +| `apiVersion` _string_ | `{{ $type.GVK.Group }}/{{ $type.GVK.Version }}` | | | +| `kind` _string_ | `{{ $type.GVK.Kind }}` | | | +{{ end -}} + +{{ range $type.Members -}} +| `{{ .Name }}` _{{ markdownRenderType .Type }}_ | {{ template "type_members" . }} | {{ markdownRenderDefault .Default }} | {{ range .Validation -}} {{ markdownRenderFieldDoc . }}
{{ end }} | +{{ end -}} + +{{ end -}} + +{{ if $type.EnumValues -}} +| Field | Description | +| --- | --- | +{{ range $type.EnumValues -}} +| `{{ .Name }}` | {{ markdownRenderFieldDoc .Doc }} | +{{ end -}} +{{ end -}} + + +{{- end -}} +{{- end -}} diff --git a/docs/api-references/template/type_members.tpl b/docs/api-references/template/type_members.tpl new file mode 100644 index 0000000..041758a --- /dev/null +++ b/docs/api-references/template/type_members.tpl @@ -0,0 +1,8 @@ +{{- define "type_members" -}} +{{- $field := . -}} +{{- if eq $field.Name "metadata" -}} +Refer to Kubernetes API documentation for fields of `metadata`. +{{- else -}} +{{ markdownRenderFieldDoc $field.Doc }} +{{- end -}} +{{- end -}} diff --git a/docs/roadmap.md b/docs/roadmap.md new file mode 100644 index 0000000..0a1d87a --- /dev/null +++ b/docs/roadmap.md @@ -0,0 +1,27 @@ +# Roadmap + +The list is based on the survey results and the discussion in wg-etcd-operator. It is not set in stone and may be adjusted as needed. + +## v0.1.0 +- Create a new etcd cluster, e.g 3 or 5 members cluster + - Users should be able to set at least the etcd version and cluster size +- Understand health of a cluster +- Enabling TLS communication + - Should also support certificate renewal + +## v0.2.0 +- Upgrade across patches or one minor version +- Scale in and out, e.g 1 -> 3 -> 5 members and vice versa +- Support customizing etcd options (via flags or env vars) + +## v0.3.0 +- Recover a single failed cluster member (still have quorum) +- Recover from multiple failed cluster members (quorum loss) + +## v0.4.0 +- Create on-demand backup of a cluster +- Create periodic backup of a cluster +- Create a new cluster from a backup + +## Future versions +It makes no sense to plan too far ahead because plans can't keep up with changes. diff --git a/docs/wg/evaluation/evaluation.pdf b/docs/wg/evaluation/evaluation.pdf new file mode 100644 index 0000000..9821ea9 Binary files /dev/null and b/docs/wg/evaluation/evaluation.pdf differ diff --git a/docs/wg/survey/2024-operator-survey.md b/docs/wg/survey/2024-operator-survey.md new file mode 100644 index 0000000..5631e1f --- /dev/null +++ b/docs/wg/survey/2024-operator-survey.md @@ -0,0 +1,106 @@ +# Etcd Operator Survey Results + +# Survey Responses and Data Cleaning + +We received 52 survey responses to the Etcd Operator Survey. + +Of these 52, 10 were removed from the aggregate results below: + +* One did not complete the survey +* Two said they would not use an official operator +* Eight responses came from a single organization, and as such were condensed into a single response before computing it. + +[Detailed summary result sheet](https://docs.google.com/spreadsheets/d/1Wria1k3I4nrV2OgorDjvr4-aucoBc\_oszrdmWCPrW1c/edit?gid=0\#gid=0) has the full anonymized data. + +# Survey Population + +Almost everyone uses Etcd at work. A few use it at school or for personal projects, but most of those also use it at work. + +![bar chart showing where respondees use etcd](where_use.png) + +Folks generally run Etcd as Kubernetes pods. Only about ⅓ of those use static pods. + +![bar chart showing methods of running etcd](run_method.png) + +Our surveyees divide into thirds; one-third runs fewer than ten etcd clusters, one-third runs more than 100, and one-third is in between. + +![pie chart showing number of clusters that users run](no_clusters.png) + +Our respondees largely already use older or custom operators: + +![pie chart showing how users manage their etcd clusters](manage.png) + +# Feature Priorities + +Required features fall naturally into four clusters: + +## Universal Features: + +These features were required by more than 78% of respondees. Interestingly, no required feature, even cluster creation, was 100% universal. + +* Creation of a 3 or 5 node etcd cluster +* Understanding health of a cluster + +## Popular Features: + +These features were required by more than 52% of respondees: + +* Upgrading a cluster by one minor version +* Understanding performance of a cluster +* Upgrading a cluster between patch versions +* Enabling TLS communication +* Creating on-demand backups of a cluster +* Recovering a single failed cluster node (still have quorum) +* Creating a new cluster from a backup +* Creating periodic backups of a cluster + +## Common Features + +These features were required by 33-52% of respondees: + +* Recovering from multiple failed cluster nodes (quorum loss) +* Growing a one node cluster to a 3 node cluster +* Growing a 3 node cluster to a 5 node cluster +* Creation of a single node etcd cluster +* Upgrading a cluster by multiple minor versions +* “Rolling back” a cluster to a backup +* Creation of a cluster with learners +* Shrinking a 5 node cluster to a 3 node cluster +* Shrinking a 3 node cluster to a 1 node cluster +* Expanding size of backing cloud volumes + +## Uncommon Features + +These features were required by less than ⅓ of respondees: + +* 1:1 exchange of one node with another node (e.g. to change cloud zones) +* Downgrading a cluster by one minor version +* Downgrading a cluster between patch versions +* Moving a cluster node between cloud zones +* Shrinking size of backing cloud volumes +* Downgrading a cluster by multiple minor version +* Moving cloud volumes between types (e.g. HDD \-\> SSD) +* Enabling unencrypted communication +* Moving cloud volumes between zones + +## Suggested Features + +These features were not part of our list, but were suggested requirements by various respondees: + +* Automatic TLS certificate renewal +* Ability to customize etcd configuration parameters +* Multi-cluster support (X2) +* Automated database compaction +* Ability to customize etcd pod spec + +## Big User vs. Small User Features + +Since our surveyees divide neatly into thirds, I wanted to see if there was any required features which were notably different between Big (\>100) and Small (\< 10) users. As it turned out, there wasn’t much difference that didn’t look more like individual user differences. + +Big Users did find recovering from quorum loss to be more important, and small users found growing clusters by numbers of nodes more important. However, at 14 respondees per group, these preference differences may not be significant. + +## Hardest Part of Etcd + +We asked users what the hardest parts of etcd were, which gives suggestions for pain we could automate away. We sorted these into several categories, with some respondees naming more than one category. + +![bar chart showing the hardest parts of running etcd](hard_part.png) diff --git a/docs/wg/survey/hard_part.png b/docs/wg/survey/hard_part.png new file mode 100644 index 0000000..e771b6b Binary files /dev/null and b/docs/wg/survey/hard_part.png differ diff --git a/docs/wg/survey/manage.png b/docs/wg/survey/manage.png new file mode 100644 index 0000000..27bc704 Binary files /dev/null and b/docs/wg/survey/manage.png differ diff --git a/docs/wg/survey/no_clusters.png b/docs/wg/survey/no_clusters.png new file mode 100644 index 0000000..ecacfa2 Binary files /dev/null and b/docs/wg/survey/no_clusters.png differ diff --git a/docs/wg/survey/run_method.png b/docs/wg/survey/run_method.png new file mode 100644 index 0000000..8008dd3 Binary files /dev/null and b/docs/wg/survey/run_method.png differ diff --git a/docs/wg/survey/where_use.png b/docs/wg/survey/where_use.png new file mode 100644 index 0000000..8295512 Binary files /dev/null and b/docs/wg/survey/where_use.png differ diff --git a/go.mod b/go.mod new file mode 100644 index 0000000..70fee7f --- /dev/null +++ b/go.mod @@ -0,0 +1,100 @@ +module go.etcd.io/etcd-operator + +toolchain go1.23.4 + +go 1.23 + +require ( + github.com/onsi/ginkgo/v2 v2.19.0 + github.com/onsi/gomega v1.33.1 + k8s.io/apimachinery v0.31.0 + k8s.io/client-go v0.31.0 + sigs.k8s.io/controller-runtime v0.19.1 +) + +require ( + github.com/antlr4-go/antlr/v4 v4.13.0 // indirect + github.com/asaskevich/govalidator v0.0.0-20190424111038-f61b66f89f4a // indirect + github.com/beorn7/perks v1.0.1 // indirect + github.com/blang/semver/v4 v4.0.0 // indirect + github.com/cenkalti/backoff/v4 v4.3.0 // indirect + github.com/cespare/xxhash/v2 v2.3.0 // indirect + github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect + github.com/emicklei/go-restful/v3 v3.11.0 // indirect + github.com/evanphx/json-patch/v5 v5.9.0 // indirect + github.com/felixge/httpsnoop v1.0.4 // indirect + github.com/fsnotify/fsnotify v1.7.0 // indirect + github.com/fxamacker/cbor/v2 v2.7.0 // indirect + github.com/go-logr/logr v1.4.2 // indirect + github.com/go-logr/stdr v1.2.2 // indirect + github.com/go-logr/zapr v1.3.0 // indirect + github.com/go-openapi/jsonpointer v0.19.6 // indirect + github.com/go-openapi/jsonreference v0.20.2 // indirect + github.com/go-openapi/swag v0.22.4 // indirect + github.com/go-task/slim-sprig/v3 v3.0.0 // indirect + github.com/gogo/protobuf v1.3.2 // indirect + github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect + github.com/golang/protobuf v1.5.4 // indirect + github.com/google/cel-go v0.20.1 // indirect + github.com/google/gnostic-models v0.6.8 // indirect + github.com/google/go-cmp v0.6.0 // indirect + github.com/google/gofuzz v1.2.0 // indirect + github.com/google/pprof v0.0.0-20240525223248-4bfdf5a9a2af // indirect + github.com/google/uuid v1.6.0 // indirect + github.com/grpc-ecosystem/grpc-gateway/v2 v2.20.0 // indirect + github.com/imdario/mergo v0.3.6 // indirect + github.com/inconshreveable/mousetrap v1.1.0 // indirect + github.com/josharian/intern v1.0.0 // indirect + github.com/json-iterator/go v1.1.12 // indirect + github.com/mailru/easyjson v0.7.7 // indirect + github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect + github.com/modern-go/reflect2 v1.0.2 // indirect + github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect + github.com/pkg/errors v0.9.1 // indirect + github.com/prometheus/client_golang v1.19.1 // indirect + github.com/prometheus/client_model v0.6.1 // indirect + github.com/prometheus/common v0.55.0 // indirect + github.com/prometheus/procfs v0.15.1 // indirect + github.com/spf13/cobra v1.8.1 // indirect + github.com/spf13/pflag v1.0.5 // indirect + github.com/stoewer/go-strcase v1.2.0 // indirect + github.com/x448/float16 v0.8.4 // indirect + go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.53.0 // indirect + go.opentelemetry.io/otel v1.28.0 // indirect + go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.28.0 // indirect + go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.27.0 // indirect + go.opentelemetry.io/otel/metric v1.28.0 // indirect + go.opentelemetry.io/otel/sdk v1.28.0 // indirect + go.opentelemetry.io/otel/trace v1.28.0 // indirect + go.opentelemetry.io/proto/otlp v1.3.1 // indirect + go.uber.org/multierr v1.11.0 // indirect + go.uber.org/zap v1.26.0 // indirect + golang.org/x/exp v0.0.0-20230515195305-f3d0a9c9a5cc // indirect + golang.org/x/net v0.26.0 // indirect + golang.org/x/oauth2 v0.21.0 // indirect + golang.org/x/sync v0.7.0 // indirect + golang.org/x/sys v0.21.0 // indirect + golang.org/x/term v0.21.0 // indirect + golang.org/x/text v0.16.0 // indirect + golang.org/x/time v0.3.0 // indirect + golang.org/x/tools v0.21.1-0.20240508182429-e35e4ccd0d2d // indirect + gomodules.xyz/jsonpatch/v2 v2.4.0 // indirect + google.golang.org/genproto/googleapis/api v0.0.0-20240528184218-531527333157 // indirect + google.golang.org/genproto/googleapis/rpc v0.0.0-20240701130421-f6361c86f094 // indirect + google.golang.org/grpc v1.65.0 // indirect + google.golang.org/protobuf v1.34.2 // indirect + gopkg.in/inf.v0 v0.9.1 // indirect + gopkg.in/yaml.v2 v2.4.0 // indirect + gopkg.in/yaml.v3 v3.0.1 // indirect + k8s.io/api v0.31.0 // indirect + k8s.io/apiextensions-apiserver v0.31.0 // indirect + k8s.io/apiserver v0.31.0 // indirect + k8s.io/component-base v0.31.0 // indirect + k8s.io/klog/v2 v2.130.1 // indirect + k8s.io/kube-openapi v0.0.0-20240228011516-70dd3763d340 // indirect + k8s.io/utils v0.0.0-20240711033017-18e509b52bc8 // indirect + sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.30.3 // indirect + sigs.k8s.io/json v0.0.0-20221116044647-bc3834ca7abd // indirect + sigs.k8s.io/structured-merge-diff/v4 v4.4.1 // indirect + sigs.k8s.io/yaml v1.4.0 // indirect +) diff --git a/go.sum b/go.sum new file mode 100644 index 0000000..0958667 --- /dev/null +++ b/go.sum @@ -0,0 +1,251 @@ +github.com/antlr4-go/antlr/v4 v4.13.0 h1:lxCg3LAv+EUK6t1i0y1V6/SLeUi0eKEKdhQAlS8TVTI= +github.com/antlr4-go/antlr/v4 v4.13.0/go.mod h1:pfChB/xh/Unjila75QW7+VU4TSnWnnk9UTnmpPaOR2g= +github.com/asaskevich/govalidator v0.0.0-20190424111038-f61b66f89f4a h1:idn718Q4B6AGu/h5Sxe66HYVdqdGu2l9Iebqhi/AEoA= +github.com/asaskevich/govalidator v0.0.0-20190424111038-f61b66f89f4a/go.mod h1:lB+ZfQJz7igIIfQNfa7Ml4HSf2uFQQRzpGGRXenZAgY= +github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM= +github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw= +github.com/blang/semver/v4 v4.0.0 h1:1PFHFE6yCCTv8C1TeyNNarDzntLi7wMI5i/pzqYIsAM= +github.com/blang/semver/v4 v4.0.0/go.mod h1:IbckMUScFkM3pff0VJDNKRiT6TG/YpiHIM2yvyW5YoQ= +github.com/cenkalti/backoff/v4 v4.3.0 h1:MyRJ/UdXutAwSAT+s3wNd7MfTIcy71VQueUuFK343L8= +github.com/cenkalti/backoff/v4 v4.3.0/go.mod h1:Y3VNntkOUPxTVeUxJ/G5vcM//AlwfmyYozVcomhLiZE= +github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs= +github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs= +github.com/cpuguy83/go-md2man/v2 v2.0.4/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o= +github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E= +github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc h1:U9qPSI2PIWSS1VwoXQT9A3Wy9MM3WgvqSxFWenqJduM= +github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +github.com/emicklei/go-restful/v3 v3.11.0 h1:rAQeMHw1c7zTmncogyy8VvRZwtkmkZ4FxERmMY4rD+g= +github.com/emicklei/go-restful/v3 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b/hack/boilerplate.go.txt @@ -0,0 +1,15 @@ +/* +Copyright 2024. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ \ No newline at end of file diff --git a/internal/controller/etcdcluster_controller.go b/internal/controller/etcdcluster_controller.go new file mode 100644 index 0000000..065f6c6 --- /dev/null +++ b/internal/controller/etcdcluster_controller.go @@ -0,0 +1,63 @@ +/* +Copyright 2024. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package controller + +import ( + "context" + + "k8s.io/apimachinery/pkg/runtime" + ctrl "sigs.k8s.io/controller-runtime" + "sigs.k8s.io/controller-runtime/pkg/client" + "sigs.k8s.io/controller-runtime/pkg/log" + + operatorv1alpha1 "go.etcd.io/etcd-operator/api/v1alpha1" +) + +// EtcdClusterReconciler reconciles a EtcdCluster object +type EtcdClusterReconciler struct { + client.Client + Scheme *runtime.Scheme +} + +// +kubebuilder:rbac:groups=operator.etcd.io,resources=etcdclusters,verbs=get;list;watch;create;update;patch;delete +// +kubebuilder:rbac:groups=operator.etcd.io,resources=etcdclusters/status,verbs=get;update;patch +// +kubebuilder:rbac:groups=operator.etcd.io,resources=etcdclusters/finalizers,verbs=update + +// Reconcile is part of the main kubernetes reconciliation loop which aims to +// move the current state of the cluster closer to the desired state. +// TODO(user): Modify the Reconcile function to compare the state specified by +// the EtcdCluster object against the actual cluster state, and then +// perform operations to make the cluster state reflect the state specified by +// the user. +// +// For more details, check Reconcile and its Result here: +// - https://pkg.go.dev/sigs.k8s.io/controller-runtime@v0.19.1/pkg/reconcile +func (r *EtcdClusterReconciler) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) { + _ = log.FromContext(ctx) + + // TODO(user): your logic here + + return ctrl.Result{}, nil +} + +// SetupWithManager sets up the controller with the Manager. +func (r *EtcdClusterReconciler) SetupWithManager(mgr ctrl.Manager) error { + return ctrl.NewControllerManagedBy(mgr). + For(&operatorv1alpha1.EtcdCluster{}). + Named("etcdcluster"). + Complete(r) +} diff --git a/internal/controller/etcdcluster_controller_test.go b/internal/controller/etcdcluster_controller_test.go new file mode 100644 index 0000000..93e059c --- /dev/null +++ b/internal/controller/etcdcluster_controller_test.go @@ -0,0 +1,84 @@ +/* +Copyright 2024. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package controller + +import ( + "context" + + . "github.com/onsi/ginkgo/v2" + . "github.com/onsi/gomega" + "k8s.io/apimachinery/pkg/api/errors" + "k8s.io/apimachinery/pkg/types" + "sigs.k8s.io/controller-runtime/pkg/reconcile" + + metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" + + operatorv1alpha1 "go.etcd.io/etcd-operator/api/v1alpha1" +) + +var _ = Describe("EtcdCluster Controller", func() { + Context("When reconciling a resource", func() { + const resourceName = "test-resource" + + ctx := context.Background() + + typeNamespacedName := types.NamespacedName{ + Name: resourceName, + Namespace: "default", // TODO(user):Modify as needed + } + etcdcluster := &operatorv1alpha1.EtcdCluster{} + + BeforeEach(func() { + By("creating the custom resource for the Kind EtcdCluster") + err := k8sClient.Get(ctx, typeNamespacedName, etcdcluster) + if err != nil && errors.IsNotFound(err) { + resource := &operatorv1alpha1.EtcdCluster{ + ObjectMeta: metav1.ObjectMeta{ + Name: resourceName, + Namespace: "default", + }, + // TODO(user): Specify other spec details if needed. + } + Expect(k8sClient.Create(ctx, resource)).To(Succeed()) + } + }) + + AfterEach(func() { + // TODO(user): Cleanup logic after each test, like removing the resource instance. + resource := &operatorv1alpha1.EtcdCluster{} + err := k8sClient.Get(ctx, typeNamespacedName, resource) + Expect(err).NotTo(HaveOccurred()) + + By("Cleanup the specific resource instance EtcdCluster") + Expect(k8sClient.Delete(ctx, resource)).To(Succeed()) + }) + It("should successfully reconcile the resource", func() { + By("Reconciling the created resource") + controllerReconciler := &EtcdClusterReconciler{ + Client: k8sClient, + Scheme: k8sClient.Scheme(), + } + + _, err := controllerReconciler.Reconcile(ctx, reconcile.Request{ + NamespacedName: typeNamespacedName, + }) + Expect(err).NotTo(HaveOccurred()) + // TODO(user): Add more specific assertions depending on your controller's reconciliation logic. + // Example: If you expect a certain status condition after reconciliation, verify it here. + }) + }) +}) diff --git a/internal/controller/suite_test.go b/internal/controller/suite_test.go new file mode 100644 index 0000000..0c9ba00 --- /dev/null +++ b/internal/controller/suite_test.go @@ -0,0 +1,96 @@ +/* +Copyright 2024. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package controller + +import ( + "context" + "fmt" + "path/filepath" + "runtime" + "testing" + + . "github.com/onsi/ginkgo/v2" + . "github.com/onsi/gomega" + + "k8s.io/client-go/kubernetes/scheme" + "k8s.io/client-go/rest" + "sigs.k8s.io/controller-runtime/pkg/client" + "sigs.k8s.io/controller-runtime/pkg/envtest" + logf "sigs.k8s.io/controller-runtime/pkg/log" + "sigs.k8s.io/controller-runtime/pkg/log/zap" + + operatorv1alpha1 "go.etcd.io/etcd-operator/api/v1alpha1" + // +kubebuilder:scaffold:imports +) + +// These tests use Ginkgo (BDD-style Go testing framework). Refer to +// http://onsi.github.io/ginkgo/ to learn more about Ginkgo. + +var cfg *rest.Config +var k8sClient client.Client +var testEnv *envtest.Environment +var ctx context.Context +var cancel context.CancelFunc + +func TestControllers(t *testing.T) { + RegisterFailHandler(Fail) + + RunSpecs(t, "Controller Suite") +} + +var _ = BeforeSuite(func() { + logf.SetLogger(zap.New(zap.WriteTo(GinkgoWriter), zap.UseDevMode(true))) + + ctx, cancel = context.WithCancel(context.TODO()) + + By("bootstrapping test environment") + testEnv = &envtest.Environment{ + CRDDirectoryPaths: []string{filepath.Join("..", "..", "config", "crd", "bases")}, + ErrorIfCRDPathMissing: true, + + // The BinaryAssetsDirectory is only required if you want to run the tests directly + // without call the makefile target test. If not informed it will look for the + // default path defined in controller-runtime which is /usr/local/kubebuilder/. + // Note that you must have the required binaries setup under the bin directory to perform + // the tests directly. When we run make test it will be setup and used automatically. + BinaryAssetsDirectory: filepath.Join("..", "..", "bin", "k8s", + fmt.Sprintf("1.31.0-%s-%s", runtime.GOOS, runtime.GOARCH)), + } + + var err error + // cfg is defined in this file globally. + cfg, err = testEnv.Start() + Expect(err).NotTo(HaveOccurred()) + Expect(cfg).NotTo(BeNil()) + + err = operatorv1alpha1.AddToScheme(scheme.Scheme) + Expect(err).NotTo(HaveOccurred()) + + // +kubebuilder:scaffold:scheme + + k8sClient, err = client.New(cfg, client.Options{Scheme: scheme.Scheme}) + Expect(err).NotTo(HaveOccurred()) + Expect(k8sClient).NotTo(BeNil()) + +}) + +var _ = AfterSuite(func() { + By("tearing down the test environment") + cancel() + err := testEnv.Stop() + Expect(err).NotTo(HaveOccurred()) +}) diff --git a/test/e2e/e2e_suite_test.go b/test/e2e/e2e_suite_test.go new file mode 100644 index 0000000..78e2ddf --- /dev/null +++ b/test/e2e/e2e_suite_test.go @@ -0,0 +1,120 @@ +/* +Copyright 2024. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package e2e + +import ( + "fmt" + "os" + "os/exec" + "testing" + + . "github.com/onsi/ginkgo/v2" + . "github.com/onsi/gomega" + + "go.etcd.io/etcd-operator/test/utils" +) + +var ( + // Optional Environment Variables: + // - PROMETHEUS_INSTALL_SKIP=true: Skips Prometheus Operator installation during test setup. + // - CERT_MANAGER_INSTALL_SKIP=true: Skips CertManager installation during test setup. + // These variables are useful if Prometheus or CertManager is already installed, avoiding + // re-installation and conflicts. + skipPrometheusInstall = os.Getenv("PROMETHEUS_INSTALL_SKIP") == "true" + skipCertManagerInstall = os.Getenv("CERT_MANAGER_INSTALL_SKIP") == "true" + // isPrometheusOperatorAlreadyInstalled will be set true when prometheus CRDs be found on the cluster + isPrometheusOperatorAlreadyInstalled = false + // isCertManagerAlreadyInstalled will be set true when CertManager CRDs be found on the cluster + isCertManagerAlreadyInstalled = false + + // projectImage is the name of the image which will be build and loaded + // with the code source changes to be tested. + projectImage = "example.com/etcd-operator:v0.0.1" +) + +// TestE2E runs the end-to-end (e2e) test suite for the project. These tests execute in an isolated, +// temporary environment to validate project changes with the the purposed to be used in CI jobs. +// The default setup requires Kind, builds/loads the Manager Docker image locally, and installs +// CertManager and Prometheus. +func TestE2E(t *testing.T) { + RegisterFailHandler(Fail) + _, _ = fmt.Fprintf(GinkgoWriter, "Starting etcd-operator integration test suite\n") + RunSpecs(t, "e2e suite") +} + +var _ = BeforeSuite(func() { + By("Ensure that Prometheus is enabled") + _ = utils.UncommentCode("config/default/kustomization.yaml", "#- ../prometheus", "#") + + By("generating files") + cmd := exec.Command("make", "generate") + _, err := utils.Run(cmd) + ExpectWithOffset(1, err).NotTo(HaveOccurred(), "Failed to run make generate") + + By("generating manifests") + cmd = exec.Command("make", "manifests") + _, err = utils.Run(cmd) + ExpectWithOffset(1, err).NotTo(HaveOccurred(), "Failed to run make manifests") + + By("building the manager(Operator) image") + cmd = exec.Command("make", "docker-build", fmt.Sprintf("IMG=%s", projectImage)) + _, err = utils.Run(cmd) + ExpectWithOffset(1, err).NotTo(HaveOccurred(), "Failed to build the manager(Operator) image") + + // TODO(user): If you want to change the e2e test vendor from Kind, ensure the image is + // built and available before running the tests. Also, remove the following block. + By("loading the manager(Operator) image on Kind") + err = utils.LoadImageToKindClusterWithName(projectImage) + ExpectWithOffset(1, err).NotTo(HaveOccurred(), "Failed to load the manager(Operator) image into Kind") + + // The tests-e2e are intended to run on a temporary cluster that is created and destroyed for testing. + // To prevent errors when tests run in environments with Prometheus or CertManager already installed, + // we check for their presence before execution. + // Setup Prometheus and CertManager before the suite if not skipped and if not already installed + if !skipPrometheusInstall { + By("checking if prometheus is installed already") + isPrometheusOperatorAlreadyInstalled = utils.IsPrometheusCRDsInstalled() + if !isPrometheusOperatorAlreadyInstalled { + _, _ = fmt.Fprintf(GinkgoWriter, "Installing Prometheus Operator...\n") + Expect(utils.InstallPrometheusOperator()).To(Succeed(), "Failed to install Prometheus Operator") + } else { + _, _ = fmt.Fprintf(GinkgoWriter, "WARNING: Prometheus Operator is already installed. Skipping installation...\n") + } + } + if !skipCertManagerInstall { + By("checking if cert manager is installed already") + isCertManagerAlreadyInstalled = utils.IsCertManagerCRDsInstalled() + if !isCertManagerAlreadyInstalled { + _, _ = fmt.Fprintf(GinkgoWriter, "Installing CertManager...\n") + Expect(utils.InstallCertManager()).To(Succeed(), "Failed to install CertManager") + } else { + _, _ = fmt.Fprintf(GinkgoWriter, "WARNING: CertManager is already installed. Skipping installation...\n") + } + } +}) + +var _ = AfterSuite(func() { + // Teardown Prometheus and CertManager after the suite if not skipped and if they were not already installed + if !skipPrometheusInstall && !isPrometheusOperatorAlreadyInstalled { + _, _ = fmt.Fprintf(GinkgoWriter, "Uninstalling Prometheus Operator...\n") + utils.UninstallPrometheusOperator() + } + if !skipCertManagerInstall && !isCertManagerAlreadyInstalled { + _, _ = fmt.Fprintf(GinkgoWriter, "Uninstalling CertManager...\n") + utils.UninstallCertManager() + } +}) diff --git a/test/e2e/e2e_test.go b/test/e2e/e2e_test.go new file mode 100644 index 0000000..61cddb3 --- /dev/null +++ b/test/e2e/e2e_test.go @@ -0,0 +1,307 @@ +/* +Copyright 2024. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package e2e + +import ( + "encoding/json" + "fmt" + "os" + "os/exec" + "path/filepath" + "time" + + . "github.com/onsi/ginkgo/v2" + . "github.com/onsi/gomega" + + "go.etcd.io/etcd-operator/test/utils" +) + +// namespace where the project is deployed in +const namespace = "etcd-operator-system" + +// serviceAccountName created for the project +const serviceAccountName = "etcd-operator-controller-manager" + +// metricsServiceName is the name of the metrics service of the project +const metricsServiceName = "etcd-operator-controller-manager-metrics-service" + +// metricsRoleBindingName is the name of the RBAC that will be created to allow get the metrics data +const metricsRoleBindingName = "etcd-operator-metrics-binding" + +var _ = Describe("Manager", Ordered, func() { + var controllerPodName string + + // Before running the tests, set up the environment by creating the namespace, + // installing CRDs, and deploying the controller. + BeforeAll(func() { + By("creating manager namespace") + cmd := exec.Command("kubectl", "create", "ns", namespace) + _, err := utils.Run(cmd) + Expect(err).NotTo(HaveOccurred(), "Failed to create namespace") + + By("installing CRDs") + cmd = exec.Command("make", "install") + _, err = utils.Run(cmd) + Expect(err).NotTo(HaveOccurred(), "Failed to install CRDs") + + By("deploying the controller-manager") + cmd = exec.Command("make", "deploy", fmt.Sprintf("IMG=%s", projectImage)) + _, err = utils.Run(cmd) + Expect(err).NotTo(HaveOccurred(), "Failed to deploy the controller-manager") + }) + + // After all tests have been executed, clean up by undeploying the controller, uninstalling CRDs, + // and deleting the namespace. + AfterAll(func() { + By("cleaning up the curl pod for metrics") + cmd := exec.Command("kubectl", "delete", "pod", "curl-metrics", "-n", namespace) + _, _ = utils.Run(cmd) + + By("undeploying the controller-manager") + cmd = exec.Command("make", "undeploy") + _, _ = utils.Run(cmd) + + By("uninstalling CRDs") + cmd = exec.Command("make", "uninstall") + _, _ = utils.Run(cmd) + + By("removing manager namespace") + cmd = exec.Command("kubectl", "delete", "ns", namespace) + _, _ = utils.Run(cmd) + }) + + // After each test, check for failures and collect logs, events, + // and pod descriptions for debugging. + AfterEach(func() { + specReport := CurrentSpecReport() + if specReport.Failed() { + By("Fetching controller manager pod logs") + cmd := exec.Command("kubectl", "logs", controllerPodName, "-n", namespace) + controllerLogs, err := utils.Run(cmd) + if err == nil { + _, _ = fmt.Fprintf(GinkgoWriter, fmt.Sprintf("Controller logs:\n %s", controllerLogs)) + } else { + _, _ = fmt.Fprintf(GinkgoWriter, fmt.Sprintf("Failed to get Controller logs: %s", err)) + } + + By("Fetching Kubernetes events") + cmd = exec.Command("kubectl", "get", "events", "-n", namespace, "--sort-by=.lastTimestamp") + eventsOutput, err := utils.Run(cmd) + if err == nil { + _, _ = fmt.Fprintf(GinkgoWriter, fmt.Sprintf("Kubernetes events:\n%s", eventsOutput)) + } else { + _, _ = fmt.Fprintf(GinkgoWriter, fmt.Sprintf("Failed to get Kubernetes events: %s", err)) + } + + By("Fetching curl-metrics logs") + cmd = exec.Command("kubectl", "logs", "curl-metrics", "-n", namespace) + metricsOutput, err := utils.Run(cmd) + if err == nil { + _, _ = fmt.Fprintf(GinkgoWriter, fmt.Sprintf("Metrics logs:\n %s", metricsOutput)) + } else { + _, _ = fmt.Fprintf(GinkgoWriter, fmt.Sprintf("Failed to get curl-metrics logs: %s", err)) + } + + By("Fetching controller manager pod description") + cmd = exec.Command("kubectl", "describe", "pod", controllerPodName, "-n", namespace) + podDescription, err := utils.Run(cmd) + if err == nil { + fmt.Println("Pod description:\n", podDescription) + } else { + fmt.Println("Failed to describe controller pod") + } + } + }) + + SetDefaultEventuallyTimeout(2 * time.Minute) + SetDefaultEventuallyPollingInterval(time.Second) + + Context("Manager", func() { + It("should run successfully", func() { + By("validating that the controller-manager pod is running as expected") + verifyControllerUp := func(g Gomega) { + // Get the name of the controller-manager pod + cmd := exec.Command("kubectl", "get", + "pods", "-l", "control-plane=controller-manager", + "-o", "go-template={{ range .items }}"+ + "{{ if not .metadata.deletionTimestamp }}"+ + "{{ .metadata.name }}"+ + "{{ \"\\n\" }}{{ end }}{{ end }}", + "-n", namespace, + ) + + podOutput, err := utils.Run(cmd) + g.Expect(err).NotTo(HaveOccurred(), "Failed to retrieve controller-manager pod information") + podNames := utils.GetNonEmptyLines(podOutput) + g.Expect(podNames).To(HaveLen(1), "expected 1 controller pod running") + controllerPodName = podNames[0] + g.Expect(controllerPodName).To(ContainSubstring("controller-manager")) + + // Validate the pod's status + cmd = exec.Command("kubectl", "get", + "pods", controllerPodName, "-o", "jsonpath={.status.phase}", + "-n", namespace, + ) + output, err := utils.Run(cmd) + g.Expect(err).NotTo(HaveOccurred()) + g.Expect(output).To(Equal("Running"), "Incorrect controller-manager pod status") + } + Eventually(verifyControllerUp).Should(Succeed()) + }) + + It("should ensure the metrics endpoint is serving metrics", func() { + By("creating a ClusterRoleBinding for the service account to allow access to metrics") + cmd := exec.Command("kubectl", "create", "clusterrolebinding", metricsRoleBindingName, + "--clusterrole=etcd-operator-metrics-reader", + fmt.Sprintf("--serviceaccount=%s:%s", namespace, serviceAccountName), + ) + _, err := utils.Run(cmd) + Expect(err).NotTo(HaveOccurred(), "Failed to create ClusterRoleBinding") + + By("validating that the metrics service is available") + cmd = exec.Command("kubectl", "get", "service", metricsServiceName, "-n", namespace) + _, err = utils.Run(cmd) + Expect(err).NotTo(HaveOccurred(), "Metrics service should exist") + + By("validating that the ServiceMonitor for Prometheus is applied in the namespace") + cmd = exec.Command("kubectl", "get", "ServiceMonitor", "-n", namespace) + _, err = utils.Run(cmd) + Expect(err).NotTo(HaveOccurred(), "ServiceMonitor should exist") + + By("getting the service account token") + token, err := serviceAccountToken() + Expect(err).NotTo(HaveOccurred()) + Expect(token).NotTo(BeEmpty()) + + By("waiting for the metrics endpoint to be ready") + verifyMetricsEndpointReady := func(g Gomega) { + cmd := exec.Command("kubectl", "get", "endpoints", metricsServiceName, "-n", namespace) + output, err := utils.Run(cmd) + g.Expect(err).NotTo(HaveOccurred()) + g.Expect(output).To(ContainSubstring("8443"), "Metrics endpoint is not ready") + } + Eventually(verifyMetricsEndpointReady).Should(Succeed()) + + By("verifying that the controller manager is serving the metrics server") + verifyMetricsServerStarted := func(g Gomega) { + cmd := exec.Command("kubectl", "logs", controllerPodName, "-n", namespace) + output, err := utils.Run(cmd) + g.Expect(err).NotTo(HaveOccurred()) + g.Expect(output).To(ContainSubstring("controller-runtime.metrics\tServing metrics server"), + "Metrics server not yet started") + } + Eventually(verifyMetricsServerStarted).Should(Succeed()) + + By("creating the curl-metrics pod to access the metrics endpoint") + cmd = exec.Command("kubectl", "run", "curl-metrics", "--restart=Never", + "--namespace", namespace, + "--image=curlimages/curl:7.78.0", + "--", "/bin/sh", "-c", fmt.Sprintf( + "curl -v -k -H 'Authorization: Bearer %s' https://%s.%s.svc.cluster.local:8443/metrics", + token, metricsServiceName, namespace)) + _, err = utils.Run(cmd) + Expect(err).NotTo(HaveOccurred(), "Failed to create curl-metrics pod") + + By("waiting for the curl-metrics pod to complete.") + verifyCurlUp := func(g Gomega) { + cmd := exec.Command("kubectl", "get", "pods", "curl-metrics", + "-o", "jsonpath={.status.phase}", + "-n", namespace) + output, err := utils.Run(cmd) + g.Expect(err).NotTo(HaveOccurred()) + g.Expect(output).To(Equal("Succeeded"), "curl pod in wrong status") + } + Eventually(verifyCurlUp, 5*time.Minute).Should(Succeed()) + + By("getting the metrics by checking curl-metrics logs") + metricsOutput := getMetricsOutput() + Expect(metricsOutput).To(ContainSubstring( + "controller_runtime_reconcile_total", + )) + }) + + // +kubebuilder:scaffold:e2e-webhooks-checks + + // TODO: Customize the e2e test suite with scenarios specific to your project. + // Consider applying sample/CR(s) and check their status and/or verifying + // the reconciliation by using the metrics, i.e.: + // metricsOutput := getMetricsOutput() + // Expect(metricsOutput).To(ContainSubstring( + // fmt.Sprintf(`controller_runtime_reconcile_total{controller="%s",result="success"} 1`, + // strings.ToLower(), + // )) + }) +}) + +// serviceAccountToken returns a token for the specified service account in the given namespace. +// It uses the Kubernetes TokenRequest API to generate a token by directly sending a request +// and parsing the resulting token from the API response. +func serviceAccountToken() (string, error) { + const tokenRequestRawString = `{ + "apiVersion": "authentication.k8s.io/v1", + "kind": "TokenRequest" + }` + + // Temporary file to store the token request + secretName := fmt.Sprintf("%s-token-request", serviceAccountName) + tokenRequestFile := filepath.Join("/tmp", secretName) + err := os.WriteFile(tokenRequestFile, []byte(tokenRequestRawString), os.FileMode(0o644)) + if err != nil { + return "", err + } + + var out string + verifyTokenCreation := func(g Gomega) { + // Execute kubectl command to create the token + cmd := exec.Command("kubectl", "create", "--raw", fmt.Sprintf( + "/api/v1/namespaces/%s/serviceaccounts/%s/token", + namespace, + serviceAccountName, + ), "-f", tokenRequestFile) + + output, err := cmd.CombinedOutput() + g.Expect(err).NotTo(HaveOccurred()) + + // Parse the JSON output to extract the token + var token tokenRequest + err = json.Unmarshal([]byte(output), &token) + g.Expect(err).NotTo(HaveOccurred()) + + out = token.Status.Token + } + Eventually(verifyTokenCreation).Should(Succeed()) + + return out, err +} + +// getMetricsOutput retrieves and returns the logs from the curl pod used to access the metrics endpoint. +func getMetricsOutput() string { + By("getting the curl-metrics logs") + cmd := exec.Command("kubectl", "logs", "curl-metrics", "-n", namespace) + metricsOutput, err := utils.Run(cmd) + Expect(err).NotTo(HaveOccurred(), "Failed to retrieve logs from curl pod") + Expect(metricsOutput).To(ContainSubstring("< HTTP/1.1 200 OK")) + return metricsOutput +} + +// tokenRequest is a simplified representation of the Kubernetes TokenRequest API response, +// containing only the token field that we need to extract. +type tokenRequest struct { + Status struct { + Token string `json:"token"` + } `json:"status"` +} diff --git a/test/utils/utils.go b/test/utils/utils.go new file mode 100644 index 0000000..c3d51ce --- /dev/null +++ b/test/utils/utils.go @@ -0,0 +1,251 @@ +/* +Copyright 2024. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package utils + +import ( + "bufio" + "bytes" + "fmt" + "os" + "os/exec" + "strings" + + . "github.com/onsi/ginkgo/v2" //nolint:golint,revive +) + +const ( + prometheusOperatorVersion = "v0.77.1" + prometheusOperatorURL = "https://github.com/prometheus-operator/prometheus-operator/" + + "releases/download/%s/bundle.yaml" + + certmanagerVersion = "v1.16.0" + certmanagerURLTmpl = "https://github.com/jetstack/cert-manager/releases/download/%s/cert-manager.yaml" +) + +func warnError(err error) { + _, _ = fmt.Fprintf(GinkgoWriter, "warning: %v\n", err) +} + +// Run executes the provided command within this context +func Run(cmd *exec.Cmd) (string, error) { + dir, _ := GetProjectDir() + cmd.Dir = dir + + if err := os.Chdir(cmd.Dir); err != nil { + _, _ = fmt.Fprintf(GinkgoWriter, "chdir dir: %s\n", err) + } + + cmd.Env = append(os.Environ(), "GO111MODULE=on") + command := strings.Join(cmd.Args, " ") + _, _ = fmt.Fprintf(GinkgoWriter, "running: %s\n", command) + output, err := cmd.CombinedOutput() + if err != nil { + return string(output), fmt.Errorf("%s failed with error: (%v) %s", command, err, string(output)) + } + + return string(output), nil +} + +// InstallPrometheusOperator installs the prometheus Operator to be used to export the enabled metrics. +func InstallPrometheusOperator() error { + url := fmt.Sprintf(prometheusOperatorURL, prometheusOperatorVersion) + cmd := exec.Command("kubectl", "create", "-f", url) + _, err := Run(cmd) + return err +} + +// UninstallPrometheusOperator uninstalls the prometheus +func UninstallPrometheusOperator() { + url := fmt.Sprintf(prometheusOperatorURL, prometheusOperatorVersion) + cmd := exec.Command("kubectl", "delete", "-f", url) + if _, err := Run(cmd); err != nil { + warnError(err) + } +} + +// IsPrometheusCRDsInstalled checks if any Prometheus CRDs are installed +// by verifying the existence of key CRDs related to Prometheus. +func IsPrometheusCRDsInstalled() bool { + // List of common Prometheus CRDs + prometheusCRDs := []string{ + "prometheuses.monitoring.coreos.com", + "prometheusrules.monitoring.coreos.com", + "prometheusagents.monitoring.coreos.com", + } + + cmd := exec.Command("kubectl", "get", "crds", "-o", "custom-columns=NAME:.metadata.name") + output, err := Run(cmd) + if err != nil { + return false + } + crdList := GetNonEmptyLines(string(output)) + for _, crd := range prometheusCRDs { + for _, line := range crdList { + if strings.Contains(line, crd) { + return true + } + } + } + + return false +} + +// UninstallCertManager uninstalls the cert manager +func UninstallCertManager() { + url := fmt.Sprintf(certmanagerURLTmpl, certmanagerVersion) + cmd := exec.Command("kubectl", "delete", "-f", url) + if _, err := Run(cmd); err != nil { + warnError(err) + } +} + +// InstallCertManager installs the cert manager bundle. +func InstallCertManager() error { + url := fmt.Sprintf(certmanagerURLTmpl, certmanagerVersion) + cmd := exec.Command("kubectl", "apply", "-f", url) + if _, err := Run(cmd); err != nil { + return err + } + // Wait for cert-manager-webhook to be ready, which can take time if cert-manager + // was re-installed after uninstalling on a cluster. + cmd = exec.Command("kubectl", "wait", "deployment.apps/cert-manager-webhook", + "--for", "condition=Available", + "--namespace", "cert-manager", + "--timeout", "5m", + ) + + _, err := Run(cmd) + return err +} + +// IsCertManagerCRDsInstalled checks if any Cert Manager CRDs are installed +// by verifying the existence of key CRDs related to Cert Manager. +func IsCertManagerCRDsInstalled() bool { + // List of common Cert Manager CRDs + certManagerCRDs := []string{ + "certificates.cert-manager.io", + "issuers.cert-manager.io", + "clusterissuers.cert-manager.io", + "certificaterequests.cert-manager.io", + "orders.acme.cert-manager.io", + "challenges.acme.cert-manager.io", + } + + // Execute the kubectl command to get all CRDs + cmd := exec.Command("kubectl", "get", "crds") + output, err := Run(cmd) + if err != nil { + return false + } + + // Check if any of the Cert Manager CRDs are present + crdList := GetNonEmptyLines(string(output)) + for _, crd := range certManagerCRDs { + for _, line := range crdList { + if strings.Contains(line, crd) { + return true + } + } + } + + return false +} + +// LoadImageToKindClusterWithName loads a local docker image to the kind cluster +func LoadImageToKindClusterWithName(name string) error { + cluster := "kind" + if v, ok := os.LookupEnv("KIND_CLUSTER"); ok { + cluster = v + } + kindOptions := []string{"load", "docker-image", name, "--name", cluster} + cmd := exec.Command("kind", kindOptions...) + _, err := Run(cmd) + return err +} + +// GetNonEmptyLines converts given command output string into individual objects +// according to line breakers, and ignores the empty elements in it. +func GetNonEmptyLines(output string) []string { + var res []string + elements := strings.Split(output, "\n") + for _, element := range elements { + if element != "" { + res = append(res, element) + } + } + + return res +} + +// GetProjectDir will return the directory where the project is +func GetProjectDir() (string, error) { + wd, err := os.Getwd() + if err != nil { + return wd, err + } + wd = strings.Replace(wd, "/test/e2e", "", -1) + return wd, nil +} + +// UncommentCode searches for target in the file and remove the comment prefix +// of the target content. The target content may span multiple lines. +func UncommentCode(filename, target, prefix string) error { + // false positive + // nolint:gosec + content, err := os.ReadFile(filename) + if err != nil { + return err + } + strContent := string(content) + + idx := strings.Index(strContent, target) + if idx < 0 { + return fmt.Errorf("unable to find the code %s to be uncomment", target) + } + + out := new(bytes.Buffer) + _, err = out.Write(content[:idx]) + if err != nil { + return err + } + + scanner := bufio.NewScanner(bytes.NewBufferString(target)) + if !scanner.Scan() { + return nil + } + for { + _, err := out.WriteString(strings.TrimPrefix(scanner.Text(), prefix)) + if err != nil { + return err + } + // Avoid writing a newline in case the previous line was the last in target. + if !scanner.Scan() { + break + } + if _, err := out.WriteString("\n"); err != nil { + return err + } + } + + _, err = out.Write(content[idx+len(target):]) + if err != nil { + return err + } + // false positive + // nolint:gosec + return os.WriteFile(filename, out.Bytes(), 0644) +}