Remove cluster aware updating
It is a feature that works in conjunction with our patch management servers as well as our Failover Cluster.I have written extensively about Failover Clusters before, but just to refresh, we need to install the Failover Clustering feature on each server that will be a cluster node: We could of course use the Server Manager GUI tool, but if you have several servers it is easier and quicker to use Windows Power Shell. Let’s create a cluster called Great, you have a three-node cluster.Windows Server 2012 (WS2012) introduced Cluster-Aware Updating (CAU) to allow each member of a cluster be paused, drained of highly available (HA) roles, patched, and rebooted in an orchestrated manner.Without CAU, you will probably be patching your clusters manually (which rarely happens), and in the case of Hyper-V clusters, CAU will leverage Live Migration to ensure that services have zero downtime.This would be done as follows, with a proxy called The Proxy. Internal that operates on TCP 80: netsh winhttp set proxy The Proxy. Internal:80 “” CAU will require a computer account that will be used by the cluster to create a HA role that enables the cluster to self-manage the orchestrated patching, even if the nodes of the cluster are being rebooted.The setup wizard does allow you to let the cluster create a computer account in Active Directory, but this will get some anonymous name.
This is usually returned by a HTTP server that does not support the WS-Management protocol.
You can change this default behaviour so that low priority VMs are moved using live migration, just like medium- and high-priority VMs.
WS2012 R2 Hyper-V uses live migration by default for VMs of all priorities.
Take the time to create a prestaged computer account with a name that will mean something to you and your colleagues in a year’s time.
If all goes well the wizard will complete with a Success status.
You will need a location for your nodes from which to download the updates.