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Release Process

The Kubebuilder Project is released on an as-needed basis. The process is as follows:

Note: Releases are done from the release-MAJOR.MINOR branches. For PATCH releases it is not required to create a new branch. Instead, you will just need to ensure that all major fixes are cherry-picked into the respective release-MAJOR.MINOR branch. To know more about versioning check https://semver.org/.

Note: Before 3.5.* release this project was released based on MAJOR. A change to the process was done to ensure that we have an aligned process under the org (similar to controller-runtime and controller-tools) and to make it easier to produce patch releases.

How to do a release

Create the new branch and the release tag

  1. Create a new branch git checkout -b release-<MAJOR.MINOR> from master
  2. Push the new branch to the remote repository

Now, let's generate the changelog

  1. Create the changelog from the new branch release-<MAJOR.MINOR> (git checkout release-<MAJOR.MINOR>). You will need to use the kubebuilder-release-tools to generate release notes. See here

Note

  • You will need to have checkout locally from the remote repository the previous branch
  • Also, ensure that you fetch all tags from the remote git fetch --all --tags

Draft a new release from GitHub

  1. Create a new tag with the correct version from the new release-<MAJOR.MINOR> branch
  2. Verify the Release Github Action. It should build the assets and publish in the draft release
  3. You also need to manually add the changelog generated above on the release page and publish it. Now, the code source is released !

Update the website docs (https://book.kubebuilder.io/quick-start.html)

  1. Push a PR to update the book-v3 branch with the changes of the latest release branch created (release-<MAJOR.MINOR>)
  2. Ping in the Kubebuilder Slack channel and ask for reviews.

When the release be done and the website update: Announce the new release:

  1. Announce the new release on the Slack channel, i.e:
:announce: Kubebuilder v3.5.0 has been released!
This release includes a Kubernetes dependency bump to v1.24.
For more info, see the release page: https://github.com/kubernetes-sigs/kubebuilder/releases/tag/v3.5.0
 :tada:  Thanks to all our contributors!
  1. Announce the new release via email is sent to kubebuilder@googlegroups.com with the subject [ANNOUNCE] Kubebuilder $VERSION is released

HEAD releases

The binaries releases for HEAD are available here:

How the releases are configured

The releases occur in an account in the Google Cloud (See here) using Cloud Build.

To build the Kubebuilder CLI binaries:

A trigger GitHub action release is trigged when a new tag is pushed. This action will caall the job ./build/.goreleaser.yml.

To build the Kubebuilder-tools: (Artifacts required to use ENV TEST)

Kubebuilder projects requires artifacts which are used to do test with ENV TEST (when we call make test target) These artifacts can be checked in the service page: https://storage.googleapis.com/kubebuilder-tools

The build is made from the branch tools-releases and the trigger will call the build/cloudbuild_tools.yaml passing as argument the architecture and the SO that should be used, e.g:

Screenshot 2022-04-30 at 10 15 41

For further information see the README.

To build the kube-rbac-proxy images:

These images are built from the project brancz/kube-rbac-proxy. The projects built with Kubebuilder creates a side container with kube-rbac-proxy to protect the Manager.

These images are can be checked in the consolse, see here.

The project kube-rbac-proxy is in the process to be donated to the k8s org. However, it is going on for a long time and then, we have no ETA for that to occur. When that occurs we can automate this process. But until there we need to generate these images by bumping the versions/tags released by kube-rbac-proxy on the branch kube-rbac-proxy-releases then the build/cloudbuild_kube-rbac-proxy.yaml will generate the images.

To check an example, see the pull request #2578.

Note: we cannot use the images produced by the project kube-rbac-proxy because we need to ensure to Kubebuilder users that these images will be available.

To build the gcr.io/kubebuilder/pr-verifier images:

These images are used to verify the PR title and description. They are built from kubernetes-sigs/kubebuilder-release-tools. In Kubebuilder, we have been using this project via the GitHub action .github/workflows/verify.yml and not the image, see:

  verify:
    name: Verify PR contents
    runs-on: ubuntu-latest
    steps:
    - name: Verifier action
      id: verifier
      uses: kubernetes-sigs/kubebuilder-release-tools@v0.1.1
      with:
        github_token: ${{ secrets.GITHUB_TOKEN }}

However, the image should still be built and maintained since other projects under the org might be using them.