Upgrade Geo HA installation from 12.1.9 to the latest 12.2 package (PARTIAL SUCCESS)

Versions

Current: 12.1.9
Target: 12.2.8

Upgrade checklist

Preflight

• Create a zoom meeting and schedule a recorded meeting.
• Check if the Geo HA update instructions contain version specific changes
• Check if PostgreSQL version is updated
  • We're skipping the PostgreSQL upgrade in this demo, and we'll do that separately in #32439 (closed)
  • Ensure /etc/gitlab/disable-postgresql-upgrade exists on all machines
• Check if any upgrade warnings exist
  • 12.1 changes related to monitoring do not apply to this demo.
  • 12.2 number of unicorn workers is calculated differently, but not important.
• Make sure you have access to Geoffrey - The happy HA Geo cluster
• Verify that the Geo cluster is healthy pre upgrade
  • Verify all versions match
  • Manually double check /etc/gitlab/gitlab.rb on each machine
• Find the latest packaged version of GitLab that can be used for zero downtime upgrades

Upgrade

• Retrieve a beverage of choice within a drinkable temperature range
• Join Zoom meeting and wait for arrival. Hit the record button
• Perform upgrade steps described in latest documentation, currently this unreleased version
• Record any issues encountered during the upgrade
• Verify cluster health post upgrade
• Verify PostgreSQL version is correct

Postflight

• Upload recording on YouTube https://www.youtube.com/watch?v=GB8T_CNJybg
• Mark the upgrade outcome as SUCCESS, FAILED, PARTIAL SUCCESS
• Open new issues and inform @rnienaber and @fzimmer to confirm next steps