How to change Failover Cluster IP address (Hyper-V Cluster)

Question

Hello,

We are planning to change the IP address for Hyper-V Cluster including the Management NIC IP, I want to know the action plan to perform this task without downtime

Hyper-V Cluster based on windows server 2019, I know how to change the IP of the failover cluster but I don't know the impact while this is a production environment

the cluster contains 10 nodes

Thanks in advance

Answer 1

Hello @Ahmed Essam

Welcome to Microsoft Q&A Platform,

Please check the threads below as they are related to the same topic:

https://social.technet.microsoft.com/Forums/windowsserver/en-US/a640a75b-52e1-43c1-a1fb-acbc142c614a/how-to-change-hyperv-cluster-ip-address?forum=winserverClustering

https://social.technet.microsoft.com/Forums/lync/en-US/10476ef6-72d9-4c81-95f8-0ad667aec7aa/how-to-change-hyperv-cluster-and-nodes-ip-addresses?forum=winserverClustering

I hope this helps!

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Answer 2

Hi there,

You could simply change the IP addresses of the physical nodes first, then change the Cluster VIP. If this is a Hyper-V cluster it shouldn't affect any running VM, assuming the VMs are connected to their own virtual switch and it is not shared with the host OS.

When changing IP Addresses on a Cluster, always change the IP Addresses of the nodes first. The reasoning is that Cluster detects "networks" and assigns clustered IP Addresses to a network. It also does not allow an IP Address that is not a part of the network to be set to it.

Some useful article links that might help you in getting some insights are listed below
https://techcommunity.microsoft.com/t5/windows-server-for-it-pro/how-to-change-the-ip-of-windows-faiolver-clustering/m-p/1742116

Change the IP Address of a Failover Cluster Instance https://learn.microsoft.com/en-us/sql/sql-server/failover-clusters/windows/change-the-ip-address-of-a-failover-cluster-instance?view=sql-server-ver15

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