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Rotate

This document describes the changes required in order to create a new cdk8s-plus-XX library based on the latest kubernetes version. These steps should be executed in order.

1️⃣ Prerequisite

Add new k8s spec to cdk8s repo

  1. (cdk8s repo): Generate kubernetes-schema/vX.XX.X/_definitions.json

    tools/import-spec.sh x.xx.x
    # provide the new version number e.g. 1.25.0
  2. Create PR, review then merge the updated spec into cdk8s/master branch (e.g. v25 PR).

Publish new branch to cdk8s-plus-go repo

  1. (cdk8s-plus-go repo): Create and publish a new branch for the new k8s version

    git checkout -b k8s.xx
    # e.g. k8s.25 for version 1.25.0
    git push --set-upstream origin k8s.xx

Create a new backport label in cdk8s-plus' GitHub

  1. Open the cdk8s-plus GitHub label list

  2. Add a new label for the current Kubernetes version.

    • Label name: backport-to-k8s-XX/main
    • Label color: #F53E94

e.g. If you were upgrading from v24 -> v25 the new label would be backport-to-k8s-24/main

2️⃣ Create the new cdk8s-plus branch

  1. Create a new branch in the cdk8s-plus off the current default branch. The new branch should be named k8s-XX/main (e.g. k8s-25/main for K8s v1.25.0).

  2. On the new branch update the following:

    1. Bump the minor version in latest-k8s-version.txt
    2. (README.md): In the table of supported versions, add a new row and remove the oldest one.
    3. yarn projen
    4. yarn rotate # updates all version references in documenation
    5. yarn build
    6. git commit -m "k8s-XX/main"
    7. git push origin k8s-XX/main"
  3. Verify that automation builds/tags/releases the new version successfully.

  4. Update cdk8s-plus default branch to the new branch in the GitHub repo settings.

  5. Update any existing PRs to use k8s-XX/main as the base.

3️⃣ Update Website

In the (cdk8s repo):

  1. Create a new branch off of cdk8s/master and:

    1. Bump the minor version in latest-k8s-version.txt
    2. yarn projen
    3. yarn rotate-cdk8s-plus
  2. Create a PR for the new branch, review then merge into cdk8s/master branch.

4️⃣ Update Ops

In the (cdk-ops):

  1. Create a new branch and:

    1. Bump the minor version in latest-cdk8s-plus-version.txt
    2. yarn projen
  2. Create a PR and send for approval.