KubeVirt CI Workloads Cluster Maintenance Window - 9th Jan. 12pm - 10th Jan. 12pm (UTC)

[Ying Cui]

Happy New Year, For New Year's resolutions, the KubeVirt CI maintenance team would like to perform several (probably three) disruptive improvements to our aging Prow instance during this quarter.

KubeVirt CI Workloads Cluster Maintenance Window - 9th Jan. 12pm -> 10th Jan. 12pm (UTC) The first one will be to update the OpenShift version of the CI workloads cluster which is reaching its end of life in April. For this purpose, a maintenance window is scheduled to start this Friday (9th Jan.) early in the afternoon (EMEA timezone) and to finish during the week-end. The update will be quite long since it will go through several steps before catching up the latest LTS version: OCP-v4.17 (k8s-v1.30) -> OCP-v4.18 (k8s-v1.31) -> OCP-v4.19 (k8s-v1.32) -> OCP-v4.20 (k8s-v1.33) The CI workloads cluster will still be available during the update but it will experience a few hiccups. It is expected for some ProwJobs to fail when the nodes will be evicted to reboot in order to update the operating system. You might need to use `/retest` more than usual. There are countless improvements and bug fixes between OpenShift 4.17 and 4.20 but the one which might have the most impact is the switch from `runc` to `crun`. Unless something unexpected happens this maintenance should be quite smooth overall. Don't hesitate to reach us if you have any concerns.

Regards, The KubeVirt CI maintenance team.