We have a two node cluster. We applied windows OS patches on both the nodes as follows:
There are 3 services(SQLServerA,SQLServerB,DTC) running in this SQL cluster
Node1: Moved all the three services from Node1 to Node2 and then applied OS patches on Node1, and then rebooted. After Node1 is up, moved all the services back to Node1.
Node2: Since no services are running on this node, OS patches have been applied on Node2, then rebooted this node, then tested by moving over all the three services to Node2 to make sure they can failover fine. All the three services failedover fine to Node2, no issues.
But after few minutes, Only two services(DTC and SQLServerA) is online. And SQLServerB went offline, I tried to bring online, it comes online and then after couple of minutes goes offline. I also tried to move SQLServerB service to another node to see if it works fine, but the same issue, it stay online for couple of minutes, and then SQLServerB goes offline after that. I checked the drives, they are online, any ideas as to why this is happening? Thanks.
sqldev