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🚀 Kubernetes bump
[Only for release team lead] Create an issue to track tasks to support a new Kubernetes minor release.
Tasks to bump to Kubernetes v1.<minor-version>

This issue is tracking the tasks that should be implemented after the Kubernetes minor release has been released.

Tasks

Prerequisites:

  • Decide which Cluster API release series will support the new Kubernetes version
    • If feasible we usually cherry-pick the changes back to the latest release series.

Supporting managing and running on the new Kubernetes version

This section contains tasks to update our book, e2e testing and CI to use and test the new Kubernetes version as well as changes to Cluster API that we might have to make to support the new Kubernetes version. All of these changes should be cherry-picked to all release series that will support the new Kubernetes version.

  • Modify quickstart and CAPD to use the new Kubernetes release:
    • Bump the Kubernetes version in:
      • test/*: search for occurrences of the previous Kubernetes version
      • Tiltfile
    • Ensure the latest available kind version is used (including the latest images for this kind release)
    • Verify the quickstart manually
    • Prior art: #7156
    • bump InitWithKubernetesVersion and WorkloadKubernetesVersion in clusterctl_upgrade_test.go
  • Ensure the jobs are adjusted to provide test coverage according to our support policy:
    • For the main branch and the release branch of the latest supported Cluster API minor release:
      • Add new periodic upgrade job.
      • Adjust presubmit jobs so that we have the latest upgrade jobs available on PRs.
    • For the main branch:
      • periodics & presubmits:
        • Bump KUBEBUILDER_ENVTEST_KUBERNETES_VERSION of the test-mink8s jobs to the new minimum supported management cluster version.
      • periodics:
        • Bump KUBERNETES_VERSION_MANAGEMENT of the e2e-mink8s job to the new minimum supported management cluster version.
        • Drop the oldest upgrade job as the oldest Kubernetes minor version is now out of support.
    • Prior art: kubernetes/test-infra#27421
  • Update book:
    • Update supported versions in versions.md
    • Update job documentation in jobs.md
    • Prior art: #7194 #7196
  • Issues specific to the Kubernetes minor release:
    • Sometimes there are adjustments that we have to make in Cluster API to be able to support a new Kubernetes minor version. Please add these issues here when they are identified.

Using new Kubernetes dependencies

This section contains tasks to update Cluster API to use the latest Kubernetes Go dependencies and related topics like using the right Go version and build images. These changes are only made on the main branch. We don't need them in older releases as they are not necessary to manage workload clusters of the new Kubernetes version or run the Cluster API controllers on the new Kubernetes version.

  • Ensure there is a new controller-runtime minor release which uses the new Kubernetes Go dependencies.
  • Update our Prow jobs for the main branch to use the correct kubekins-e2e image
  • Bump the Go version in Cluster API: (if Kubernetes is using a new Go minor version)
    • Search for the currently used Go version across the repository and update it
    • We have to at least modify it in: hack/ensure-go.sh, .golangci.yml, cloudbuild*.yaml, go.mod, Makefile, netlify.toml, Tiltfile
    • Prior art: #7135
  • Bump controller-runtime
  • Bump controller-tools
  • Bump the Kubernetes version used in integration tests via KUBEBUILDER_ENVTEST_KUBERNETES_VERSION in Makefile
  • Bump conversion-gen via CONVERSION_GEN_VER in Makefile
    • Prior art: #7118