Windows updating best practice
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CAU cannot update the cluster nodes if the nodes are not configured for remote management.
The following example shows an additional method to enable automatic restarts on a cluster node.
You must use the Failover Clustering Tools from the Windows Server 2012 R2 RSAT to remotely manage updates for a Windows Server 2012 R2 failover cluster.
You can also use the Windows Server 2012 R2 RSAT to remotely manage updates on a Windows Server 2012 failover cluster.
To download Microsoft updates from Microsoft Update or Windows Update to cluster nodes in certain branch office scenarios, you may need to configure proxy settings for the Local System account on each node.
For example, you might need to do this if your branch office clusters access Microsoft Update or Windows Update to download updates by using a local proxy server.
The exact installation requirements for the Failover Clustering Tools depend on whether CAU coordinates updates as a clustered role on the failover cluster (by using self-updating mode) or from a remote computer running Windows Server 2012 R2, Windows Server 2012, Windows 8.1 or Windows 8 (by using remote-updating mode).
The self-updating mode of CAU additionally requires the installation of the CAU clustered role on the failover cluster by using the CAU tools.
Updated: March 8, 2016Applies To: Windows Server 2012 R2, Windows Server 2012This section describes the requirements and dependencies that are needed to use Cluster-Aware Updating (CAU) to apply updates to a Windows Server 2012 R2 or Windows Server 2012 failover cluster.
For additional information about best practices and tests for cluster updating readiness, see the following sections later in this topic: You may need to independently validate that your cluster environment is ready to apply updates if you use a plug-in other than Microsoft. If you are using a non-Microsoft plug-in, contact the publisher for more information.
The following are general requirements for a failover cluster to support updates by using CAU.
Additional configuration requirements for remote management on the nodes are listed in Configure the nodes for remote management later in this topic.
CAU cannot be configured for self-updating mode or use certain features in remote-updating mode.