zulip/docs/processes/release-checklist.md

Zulip server release checklist

This document has reminders of things one might forget to do when preparing a new release.

A week before the release

• Major releases only (e.g., 4.0):
  • Upgrade all Python dependencies in requirements to latest upstream versions so they can burn in (use pip list --outdated).
  • Upgrade all puppet dependencies in puppet/deps.yaml
  • Upgrade all puppet-installed dependencies (e.g., Smokescreen, go, etc) in puppet/zulip/manifests/common.pp
  • Post a message to Weblate inviting translators to translate new strings.
  • Merge draft updates to the changelog with changes since the last release.
  • Use updating the changelog and drafting the release blog post as review passes to identify:
    • Projects that require follow-up work.
    • Documentation that needs to be updated.
  • Update /features and other pages (e.g., /for/business) with major new features, and important changes to existing features.
  • Draft newsletter.
  • Draft email and social media announcements.
• Create a burn-down list of issues that need to be fixed before we can release, and make sure all of them are being worked on.
• Draft the release blog post (a.k.a. the release notes) in Paper. In it, list the important changes in the release, from most to least notable (or organized by category for major releases).
• Collect a list of folks who would like to be mentioned in the blog post for their non-code contributions during the release cycle. See CZO thread for previous releases.

Final release preparation

• Update the Paper blog post draft with any new commits.
• Merge updated translations from Weblate (using the appropriate branch for the release).
• Send around the Paper blog post draft for review.
• Move the blog post draft to Astro:
  • Use "··· > Export > Markdown" to get a pretty good Markdown conversion, and save it in src/posts with a filename appropriate for a URL slug.
  • Add the needed YAML frontmatter.
  • Move any images into public and update their references.
  • Proofread, especially for formatting.
  • If the draft post should remain secret until release, avoid using a guessable Git branch name for the pull request (the deployment preview URL is based on the branch name).
• Major releases only (e.g., 4.0): Schedule team members to provide extra responsive #production help support following the release.

Executing the release

• Create the release commit, on main (for major releases) or on the release branch (for minor releases):
  • Copy the Markdown release notes for the release into docs/overview/changelog.md.
  • Verify the changelog passes lint, and has the right release date.
  • Major releases only: Adjust the changelog.md heading to have the stable release series boilerplate.
  • Update ZULIP_VERSION and LATEST_RELEASE_VERSION in version.py.
  • Major releases only: Update API_FEATURE_LEVEL to a feature level for the final release, and document a reserved range.
• Run tools/release with the release version.
• Update the Docker image:
  • Commit the Docker updates:
    • Update ZULIP_GIT_REF in Dockerfile
    • Update README.md
    • Update the image in docker-compose.yml, as well as the ZULIP_GIT_REF
  • Commit the Helm updates:
    • Add a new entry to kubernetes/chart/zulip/CHANGELOG.md
    • Update the appVersion in kubernetes/chart/zulip/Chart.yaml
    • Update the tag in kubernetes/chart/zulip/values.yaml
    • Update the docs by running helm-docs
    • Update the image in kubernetes/manual/zulip-rc.yml
  • Build the image: docker build --pull . -t zulip/docker-zulip:4.11-0 --no-cache
  • Also tag it with latest: docker build . -t zulip/docker-zulip:latest
  • Push those tags: docker push zulip/docker-zulip:4.11-0; docker push zulip/docker-zulip:latest
  • Push the commits to main.
• Merge the blog post PR.
• Announce the release, pointing to the blog post, via:
  • Email to zulip-announce
  • Email to zulip-blog-announce
  • Message in #announce
  • Post from @zulip.bsky.social.
  • Toot from fosstodon.org/@zulip
  • Post from Kandra Labs LinkedIn

Post-release

• The DigitalOcean one-click image will report in an internal channel once it is built, and how to test it. Verify it, then publish it to DigitalOcean marketplace.
• Major releases only:
  • Create a release branch (e.g., 4.x).
  • On the release branch, update ZULIP_VERSION in version.py to the present release with a +git suffix, e.g., 4.0+git.
  • On main, update ZULIP_VERSION to the future major release with a -dev+git suffix, e.g., 5.0-dev+git. Make a Git tag for this update commit with a -dev suffix, e.g., 5.0-dev. Push the tag to both zulip.git and zulip-internal.git to get a correct version number for future Cloud deployments.
  • Add the new release to .github/ISSUE_TEMPLATE/2_bug_report.md.
  • Consider removing a few old releases from the issue template and ReadTheDocs; we keep about two years of back-versions.
  • Update Weblate to add a component on the release branch for Django; then add a parallel Frontend component by using "Duplicate this component" on the Django release branch component.
  • In Weblate, remove the previous stable components.
  • Add a new CI production upgrade target:
    • Build a docker image: cd tools/ci && docker build --pull . -f Dockerfile.prod --build-arg=BASE_IMAGE=zulip/ci:bookworm --build-arg=VERSION=7.0 --tag=zulip/ci:bookworm-7.0 && docker push zulip/ci:bookworm-7.0
    • Add a new line to the production_upgrade matrix in .github/workflows/production-suite.yml.
  • Update /history page in templates/corporate/history.md, adding the release and any other major news from the release cycle.
  • Inspect all TODO/compatibility comments for whether we can remove any backwards-compatibility code following this release.
  • Review possible improvements to API bindings to better match the defaults and features of the new release.
• Minor releases only (e.g., 3.2):
  • On the release branch, update ZULIP_VERSION to the present release with a +git suffix, e.g., 3.2+git.
  • On main, update LATEST_RELEASE_VERSION with the released version, as well as the changelog changes from the release branch.
• Prereleases only (e.g., 7.0-beta3):
  • Atop the prerelease commit (e.g., 7.0-beta3), make a commit updating ZULIP_VERSION to the prerelease version with a +git suffix, e.g., 7.0-beta3+git. Push this to main. (If main has already diverged from the prerelease, a merge commit will be needed here.)
  • Delete the prerelease branch (e.g., 7.0-beta3-branch); it's now an ancestor of main and thus unnecessary.