Configuring the Update for Windows Server Clusters

Clustered Update is a feature that allows you to update servers in a failover cluster with little or no loss of availability during the update process. During an update run, the feature transparently performs the following tasks:

  1. Places a cluster node in maintenance mode.
  2. Move the clustered roles of the node.
  3. Installs updates and dependent updates.
  4. Perform a reboot if necessary.
  5. Exit the node in maintenance mode.
  6. Restores clustered roles on the node.
  7. Move to the next node.

The automatic update process triggers a scheduled failover. This may result in a temporary downtime for connected clients. However, in the case of continuously available workloads, such as Dynamic Migration Hyper-V or SMB Transparent Failover File Server, the cluster-aware update coordinates cluster updates without impacting the availability of the cluster. service.

Prerequisites

Using the “Cluster-enabled” feature requires giving the child object creation rights to the cluster account on OU.

If you have not already done so, create a cluster-dedicated OU on your Active Directory and put in the computer accounts of the nodes and the Computer object with the cluster name.

Change the security properties of the OU, to give the “Create all child objects” rights to the cluster account.



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