Hi,
We did in-place upgrade from Windows 2008 to Windows 2008 R2 on first node in two node cluster {we did not notice or read the microsoft article which states it is not supported :( }. Now, after the upgrade we see the below error log.
Also, the upgraded server's heartbeat and production network in cluster is not online.
ERROR: clustermanager:Node 'xxxxx' attempted to join a failover cluster but
failed due to incompatibility between versions of the cluster service software.
If node 'xxxxx' or a different node in the cluster has been recently
upgraded, please verify that the changed cluster deployment with different
versions of the cluster service software is supported.
Currently all the cluster resources are up and running on another node (which is still Windows 2008). Our question is,
1) If we perform in-place upgrade on another node from windows 2008 to windows 2008 R2, will this issue get fix?
2)Or should we have to roll back to the first node to windows 2008?
Thanks,
Umesh.S.K