How to change Cluster IP of SQL server with FCI

Question

Server A and Server B in a domain environment are clustered in a Windown Server Failover Cluster (WSFC).
After that, SQLServer is constructed on WSFC with Failover Cluster Instance (FCI).

Versions:
WindowsServer 2019 StandardEdition
Microsoft SQL Server 2019 Enterprise

In this state, we would like to change the IP address for cluster access and the IP address assigned to FCI.

Question1:
Is it possible to change the IP address for cluster access after constructing the cluster?
　If possible, is there a manual that describes the procedure?

Question2:
Is it possible to change the IP address assigned to FCI?
　If possible, is there a manual that describes the procedure?

Question3:
In making the above two changes, if there is something that requires attention (such as reconfiguring the cluster)
　Could you please teach me?

Answer 1

Yes, you can change all IP addresses of that cluster.

Changing the nodes IP is a standard Windows procedure
Changing the IP address of the cluster => failover cluster manager - properties of the windows cluster
Changing the IP address of the resource group => failover cluster manager - roles - properties of the resource

make sure that all new IP addresses also be shown in the SQL configuration manager - network configuration

Here is documentation on how to change SQL IPs, maybe that helps
https://learn.microsoft.com/en-us/sql/sql-server/failover-clusters/windows/change-the-ip-address-of-a-failover-cluster-instance?view=sql-server-ver16#WSFC

Edit:
Maybe - take care of your DNS server - check there if all names are pointing to the new addresses

Answer 2

Hi @(0919)小林智之 ,

In addition to the information provided by BjoernPeters, you can also take a look at this article, which contains some screenshots.
https://www.mssqltips.com/sqlservertip/4220/change-the-virtual-ip-address-for-a-sql-server-failover-cluster/
Hope this would give you some help.

Best regards,
Seeya

---

If the answer is the right solution, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.