Red Hat Summit1.2. Understanding OpenShift Dedicated cluster upgrades
When upgrades are made available for your OpenShift Dedicated cluster, you can upgrade to the newest version through Red Hat OpenShift Cluster Manager or OpenShift Cluster Manager CLI. You can set your upgrade policies on existing clusters or during cluster creation, and upgrades can be scheduled to occur automatically or manually.
Before upgrading a Workload Identity Federation (WIF)-enabled OpenShift Dedicated on Google Cloud cluster, you must update the wif-config. For more information, see "Cluster upgrades with Workload Identity Federation (WIF)".
Red Hat Site Reliability Engineers (SRE) will provide a curated list of available versions for your OpenShift Dedicated clusters. For each cluster you will be able to review the full list of available releases, as well as the corresponding release notes. OpenShift Cluster Manager will enable installation of clusters at the latest supported versions, and upgrades can be canceled at any time.
You can also set a grace period for how long PodDisruptionBudget protected workloads are respected during upgrades. After this grace period, any workloads protected by PodDisruptionBudget that have not been successfully drained from a node, will be forcibly deleted.
All Kubernetes objects and Persistent Volumes (PVs) in each OpenShift Dedicated cluster are backed up as part of the OpenShift Dedicated service. Application and application data backups are not a part of the OpenShift Dedicated service. Ensure you have a backup policy in place for your applications and application data before scheduling upgrades.
When following a scheduled upgrade policy, there might be a delay of an hour or more before the upgrade process begins, even if it is an immediate upgrade. Additionally, the duration of the upgrade might vary based on your workload configuration.
1.2.1. Recurring upgrades
Upgrades can be scheduled to occur automatically on a day and time specified by the cluster owner or administrator. Upgrades occur on a weekly basis, unless an upgrade is unavailable for that week.
If you select recurring updates for your cluster, you must provide an administrator’s acknowledgment. OpenShift Cluster Manager does not start scheduled y-stream updates for minor versions without receiving an administrator’s acknowledgment.
Recurring upgrade policies are optional and if they are not set, the upgrade policies default to individual.
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