Migrate CI/CD jobs to new Ubuntu LTS Focal

At the start of the Victoria development cycle, the current LTS or stable distribution versions include Ubuntu 20.04 (Focal). Our CI/CD testing use Ubuntu 18.04 (Bionic) version. We need to migrate the testing to the new Ubuntu Focal.

Current CI/CD jobs are mixed with zuulv3 native and legacy jobs. During Ubuntu Xenial to Bionic migration we did comparable work (especially legacy job migration was painful).

Zuulv3 native jobs community goal of Victoria cycle will make this migration easy.

In this goal, we will only migrate the zuulv3 native jobs to Ubuntu Focal which includes the devstack base job migration also. So that all the legacy jobs will be migrated to Ubuntu Focal automatically during zuulv3 migration work.

If any failures related to the new distro (Focal) block the zuulv3 migration, then such jobs can use Bionic nodeset temporarily and later migrate to Focal.

Stable branches will keep using their original distro version, and that will be handled with job branches variant.

Champion

Ghanshyam Mann (gmann)

Gerrit Topic

To facilitate tracking, commits related to this goal should use the gerrit topic:

migrate-to-focal

Completion Criteria

  1. All CI testing jobs for official OpenStack projects should run on Ubuntu Focal.

Current State / Anticipated Impact

All CI/CD jobs run on Bionic. First, we will provide the devstack base job on Focal with WIP, and all projects will test it before merging.