Environment Detail:
Deploying Exchange server 2019, 6 servers on PR site and 3 servers on DR site. After installation and DAG creation PR site 6 servers were added to the DAG successfully but on the DR site 3 servers getting the following error while adding these servers from ECP or even from the servers powershell, using the following command.
Add-DatabaseAvailabilityGroupServer -Identity DAG19 -MailboxServer servername
Error:
A server-side database availability group administrative operation failed. Error The operation failed. CreateCluster errors may result from incorrectly configured static addresses.
Error: An error occurred while attempting a cluster operation. Error: Cluster API failed: "AddClusterNode() (MaxPercentage=12) failed with 0x35. Error: The network path was not found". [Server: servername.cp.IG.com]
Solution:
uninstall the failover cluster feature with the following command.
Remove-windowsfeature failover-clustering
Restart the server
Try to add the server, Run the following powershell command on the required server.
Add-DatabaseAvailabilityGroupServer -Identity DAG19 -MailboxServer servername
and server was added without any issue.
Solution details:
Nearly same issue is discussed here with same solution.
https://learn.microsoft.com/en-US/troubleshoot/windows-server/high-availability/duplicate-address-error-validate-failover-cluster
I have created the effected VMs from same image and per above link it seems the failover cluster feature was installed, and which have assigned same MAC address to the three VMs. may find the following lines in Microsoft article.
"
- The referenced servers are built from the same image and automatically create the Cluster NetFT adapter on each node with an identical MAC address. Failover clustering flags this as an error because it requires unique physical addresses.
"
with removing and re installing the failover cluster feature that MAC addresses were changed.
