Merge pull request #87 from alexander-demicev/releasedocs

📖 Add doc describing release process

Makefile

@@ -52,6 +52,13 @@ export KUBEBUILDER_ENVTEST_KUBERNETES_VERSION ?= 1.24.2
 export KUBEBUILDER_CONTROLPLANE_START_TIMEOUT ?= 60s
 export KUBEBUILDER_CONTROLPLANE_STOP_TIMEOUT ?= 60s
 
+# Release
+USER_FORK ?= $(shell git config --get remote.origin.url | cut -d/ -f4) # only works on https://github.com/<username>/cluster-api.git style URLs
+ifeq ($(USER_FORK),)
+USER_FORK := $(shell git config --get remote.origin.url | cut -d: -f2 | cut -d/ -f1) # for git@github.com:<username>/cluster-api.git style URLs
+endif
+IMAGE_REVIEWERS ?= $(shell ./hack/get-project-maintainers.sh)
+
 # Binaries.
 # Need to use abspath so we can invoke these from subdirectories
 CONTROLLER_GEN_VER := v0.9.2
@@ -90,6 +97,10 @@ HELM_VER := v3.8.1
 HELM_BIN := helm
 HELM := $(TOOLS_BIN_DIR)/$(HELM_BIN)-$(HELM_VER)
 
+YQ_VER := v4.25.2
+YQ_BIN := yq
+YQ := $(TOOLS_BIN_DIR)/$(YQ_BIN)-$(YQ_VER)
+
 # It is set by Prow GIT_TAG, a git-based tag of the form vYYYYMMDD-hash, e.g., v20210120-v0.3.10-308-gc61521971
 TAG ?= dev
 ARCH ?= amd64
@@ -145,6 +156,7 @@ setup-envtest: $(SETUP_ENVTEST) ## Build a local copy of setup-envtest.
 golangci-lint: $(GOLANGCI_LINT) ## Build a local copy of golang ci-lint.
 gotestsum: $(GOTESTSUM) ## Build a local copy of gotestsum.
 helm: $(HELM) ## Build a local copy of helm.
+yq: $(YQ) ## Build a local copy of yq.
 
 $(KUSTOMIZE): ## Build kustomize from tools folder.
 	GOBIN=$(TOOLS_BIN_DIR) $(GO_INSTALL) sigs.k8s.io/kustomize/kustomize/v4 $(KUSTOMIZE_BIN) $(KUSTOMIZE_VER)
@@ -179,6 +191,9 @@ $(HELM): ## Put helm into tools folder.
 	ln -sf $(HELM) $(TOOLS_BIN_DIR)/$(HELM_BIN)
 	rm -f $(TOOLS_BIN_DIR)/get_helm.sh
 
+$(YQ):
+	GOBIN=$(TOOLS_BIN_DIR) $(GO_INSTALL) github.com/mikefarah/yq/v4 $(YQ_BIN) ${YQ_VER}
+
 .PHONY: cert-mananger
 cert-manager: # Install cert-manager on the cluster. This is used for development purposes only.
 	$(ROOT)/hack/cert-manager.sh
@@ -409,6 +424,10 @@ upload-staging-artifacts: ## Upload release artifacts to the staging bucket
 update-helm-repo:
 	./hack/update-helm-repo.sh $(RELEASE_TAG)
 
+.PHONY: promote-images
+promote-images: $(KPROMO)
+	$(KPROMO) pr --project capi-operator --tag $(RELEASE_TAG) --reviewers "$(IMAGE_REVIEWERS)" --fork $(USER_FORK) --image cluster-api-operator
+
 ## --------------------------------------
 ## Cleanup / Verification
 ## --------------------------------------

docs/release.md

@@ -0,0 +1,43 @@
+# Releasing new versions
+
+This documents describes release process for the Cluster API Operator.
+
+1. Cut the release branch.
+
+```bash
+export RELEASE_TAG=v0.1.1
+
+git tag -s -a ${RELEASE_TAG} -m ${RELEASE_TAG}
+
+git push upstream ${RELEASE_TAG}
+```
+
+This will trigger [release github action](https://github.com/kubernetes-sigs/cluster-api-operator/blob/main/.github/workflows/release.yaml) that will
+create a draft release with operator components and helm chart, also a Prow job to publish operator image to the staging registry will start.
+
+2. Wait for image to appear in the [staging registry](https://console.cloud.google.com/gcr/images/k8s-staging-capi-operator/global/cluster-api-operator).
+
+3. Create a GitHub [Personal access tokens](https://github.com/settings/tokens) if you don't have one already. We're going to use for opening a PR
+to promote image from staging to production.
+
+```bash
+export GITHUB_TOKEN=<your GH token>
+make promote-images
+```
+
+Merge the PR after it was created and verify that image is present in the production registry.
+
+```bash
+docker pull registry.k8s.io/capi-operator:${RELEASE_TAG}
+```
+
+4. Publish the release on Github.
+
+5. After release was published, switch back to main branch and update index.yaml. It's the source for operator helm chart repository.
+
+```bash
+git checkout main
+make update-helm-repo
+```
+
+6. Create a PR with the changes.

hack/get-project-maintainers.sh

@@ -0,0 +1,34 @@
+#!/usr/bin/env bash
+
+# Copyright 2022 The Kubernetes Authors.
+#
+# 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.
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+if [[ "${TRACE-0}" == "1" ]]; then
+    set -o xtrace
+fi
+
+REPO_ROOT=$(dirname "${BASH_SOURCE[0]}")/..
+
+YQ_BIN=yq
+YQ_PATH=hack/tools/bin/${YQ_BIN}
+
+cd "${REPO_ROOT}" && make ${YQ_BIN} >/dev/null
+
+KEYS=()
+while IFS='' read -r line; do KEYS+=("$line"); done < <(${YQ_PATH} e '.aliases["cluster-api-operator-admins"][]' OWNERS_ALIASES)
+echo "${KEYS[@]/#/@}"