Upgrading a node to Windows Server 2022
While the cluster that we have configured in our lab is already utilizing Windows Server 2022 as the operating system, cluster node OS upgrades can be completed using a Cluster OS Rolling Upgrade approach to upgrade the cluster node operating system without stopping the cluster workloads.
The Cluster OS Rolling Upgrade approach allows for great flexibility, allowing you to upgrade the cluster node by node from Windows Server 2019 to Windows Server 2022 for all nodes in the cluster without any downtime. A new cluster does not need to be created during this process, and the upgrade process itself is fully reversible at any point except the final stage step (when the Update-ClusterFunctionalLevel
cmdlet has been issued). In addition, if you must stay in a mixed OS mode for a brief time, patching and general cluster operations can be supported for both OS versions.
Before you begin planning your Cluster OS Rolling Upgrade process, you will...