Auto updating blog
When you click the “Next” button, you see the screen as in the following screen shot: Note that you must choose the red-circled “Add the CAU clustered role..” action, in order to get to the next wizard screen.CAU clustered role is the Self-Updating functionality for the cluster.
Cluster-Aware Updating (CAU) is an exciting new feature that we have added in Windows Server 2012 that addresses precisely this gap.During an Updating Run, CAU transparently puts each node of the cluster into node maintenance mode, temporarily fails over the “clustered roles” off it to other nodes, installs the updates and any dependent updates on the first node, performs a restart if necessary, brings the node back out of maintenance mode, fails back the original clustered roles back onto the node, and then proceeds to update the next node.CAU is cluster workload-agnostic, and it works great with Hyper-V, and a number of File Server workloads. Self-Updating: Once configured by you, CAU can run on a cluster node that it is meant to update.Once you have decided to try the CAU feature in Windows Server 2012 to update your failover cluster, you will very quickly apreciate its simplicity and power.CAU allows you to update clustered servers with little or no loss in availability during the update process.You can then have CAU “connect” to any failover cluster using appropriate administration credentials, and update the cluster on demand For an overview of the scenario, check out the CAU Scenario Overview.
For this blog post, I will focus on the first mode above: Self-Updating.
This list is auto-populated for you everytime GUI starts up.
Then look at the Cluster Action circled in green in the previous screen shot – “Configure cluster self-updating options”.
Confirm that the scenario works by previewing the updates and prompting a Self-Updating Run Then you simply sit back and enjoy watching cluster self-updating in action! As Failover Clustering Tools are by default auto-selected for installation when the Failover Clustering feature is installed on a cluster node, your cluster nodes most likely already have CAU tools pre-installed.
The net is that you can safely skip this step if you are running it from one of the cluster nodes.
Look at the following screen shot for how to install it from Server Manager on that computer: Alternatively, you can also install CAU tools via PS cmdlet option.