Hi
We have SQL cluster installed on top of windows cluster on VM environment.
Node1 and Node2 under Windows Failover Cluster. SQL instance is currently on node2 the instance is up and running, but SQL Cluster service remains online pending and it restarts the instance on every 5 minutes.
SQL Browser service are running successfully
TCP/IP ports are enabled and configured
If we start the SQL server agent it is on for seconds and stopped immediately
Cluster Service is attempt to connect to the SQL service every few minutes (setting in SQL cluster resource) for the IsAlive check, if this fails then the SQL resource is restarted even if the instance was online. Hope this is what happening exactly.
Some info from Error cluster log as well
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[sqsrvres] ODBC Error: [08001] [Microsoft][SQL Server Native Client 11.0]SQL Server Network Interfaces: Error Locating Server/Instance Specified [xFFFFFFFF]. (268435455)
00001024.00053314::2015/10/30-19:57:50.772 ERR [RES] SQL Server <SQL Server (SIMAH_COMMDB)>: [sqsrvres] ODBC Error: [HYT00] [Microsoft][SQL Server Native Client 11.0]Login timeout expired (0)
00001024.00053314::2015/10/30-19:57:50.772 ERR [RES] SQL Server <SQL Server (SIMAH_COMMDB)>: [sqsrvres] ODBC Error: [08001] [Microsoft][SQL Server Native Client 11.0]A network-related or instance-specific error has occurred while establishing
a connection to SQL Server. Server is not found or not accessible. Check if instance name is correct and if SQL Server is configured to allow remote connections. For more information see SQL Server Books Online. (268435455)
00001024.00053314::2015/10/30-19:57:50.772 INFO [RES] SQL Server <SQL Server (SIMAH_COMMDB)>: [sqsrvres] Could not connect to SQL Server (rc -1)
Working as a Senior Database Analyst & Architect at Ministry of Higher Education in KSA