CAPI Ubuntu 22.04 images

[alex-dabija]

Task

Generate and use Ubuntu 22.04 images for CAPG & CAPA clusters.

Background

CAPG & CAPA cluster use Ubuntu 20.04 images with Control Groups v1 which is enabled by default. AWS vintage is already using Control Groups v2.

All the CAPI clusters, including CAPG & CAPA ones, must use Control Groups v2.

Control Groups v2 are enabled in Ubuntu 22.04 out of the box.

TODOs:

• generate CAPI images with Ubuntu 22.04;
• update gohan to use Ubuntu 22.04 images;
• update gunter to use Ubuntu 22.04 images;
• update frieza to use Ubuntu 22.04 images;
• update frieza / appstack to use Ubuntu 22.04 images;
• update golem to use Ubuntu 22.04 images;
• update tornado to use Ubuntu 22.04 images;
• any other cluster should also be migrated to use Ubuntu 22.04 images;

[AverageMarcus]

Currently, image-builder is impacted by this issue (hashicorp/packer#11733) and unable to build Ubuntu 22.04 images without some workaround. I haven't yet managed to get a workaround to actually work though.

[AverageMarcus]

PRs:

• Added all upstream changes to templates cilium-app#44 (will need default-apps-... updating once released)
• Re-added Ubuntu 22.04 support cluster-aws#129 (blocked by first PR)
• Ubuntu 22.04 cluster-gcp#163 (blocked by first PR)
• Added Ubuntu 22.04 builds for AWS and GCP kubernetes-sigs/image-builder#994 (upstream)

[AverageMarcus]

Default-apps PRs:

• Bumped cilium to 0.5.0 default-apps-gcp#95
• Bumped cilium to 0.5.0 default-apps-aws#83

[AverageMarcus]

New CAPA and CAPG clusters will now use Ubuntu 22.04 by default. Existing clusters still need to be updated.

[AverageMarcus]

PR for updating gohan and gunther - https://github.com/giantswarm/management-clusters-fleet/pull/176

[AverageMarcus]

golem and tornado now managed by Flux but apps still need updating. The current versions are fairly outdated so a plan is needed to upgrade safely.

[AverageMarcus]

tornado needs a specific plan to upgrade. Closing this issue as all others are complete.