Destroy old legacy hyperv cluster

Question

We have a 2019 Cluster than is running and hosts all our guests. Unfortunately we had a previous 2016 cluster that the servers and storage array were powered off and reused. The cluster was never gracefully destroyed so we have the legacy settings in AD and are getting event log alerts for it.
I did manage to get one node powered up, but the cluster manager will not connect.

How do I safely remove the old cluster from the domain?

Answer 1

HI,

To remove the cluster use Powershell

Run powershell as an administrator

Import-Module FailoverClusters

Remove-Cluster

then clear-clusternode <> do this on both nodes

Below is a link of all powershell commands:
http://technet.microsoft.com/en-us/library/ee461009.aspx
https://learn.microsoft.com/en-us/powershell/module/failoverclusters/remove-cluster?view=windowsserver2022-ps

Get-Cluster -Name Cluster1 | Remove-Cluster -Force -CleanupAD
This example destroys the cluster named Cluster1, removes cluster configuration information from the cluster nodes, and deletes the cluster objects in Active Directory. The cmdlet does not prompt for confirmation.