A client’s availability group showed in SSMS, but no role appeared in Failover Cluster Manager. Here is the sequence of steps that causes this and what to do.
SQL SERVER – Patch Failure – Unable to Retrieve the Cluster Service
Patching SQL Server 2008 R2 on a Windows Server 2012 cluster failed: unable to retrieve the Cluster Service. Here is what Detail.txt showed and the fix.
SQL Server Cluster Resource in Online Pending Too Long
A SQL Server cluster resource that stays in Online Pending for minutes can be waiting for database recovery. This post reads the cluster events and log lines of one case, finds an 8 minute gap, and traces it to a huge number of virtual log files that a log backup and a shrink fixed.
SQL SERVER – Always On Availability Group Listener Missing in SSMS but Working Fine in Failover Cluster Manager
My client’s AG listener worked fine in Failover Cluster Manager, yet SSMS showed nothing. Here is what causes a listener missing in SSMS and the fix.
SQL SERVER – Error: Parameter ‘ProbePort’ does not exist on the cluster object. Unable to set Probe Port for Azure Load Balancer
Setting up an Always On listener with an Azure Load Balancer, I hit: Parameter ‘ProbePort’ does not exist on the cluster object. Here is what fixed it for me.
SQL SERVER – Steps to Change IP Address of SQL Server Failover Cluster Instance
Moving to a new VLAN? These are the exact steps to change the IP addresses of the Windows cluster nodes and of a SQL Server failover cluster instance.
SQL SERVER – Always On AG – HADRAG: Did not Find the Instance to Connect in SqlInstToNodeMap Key
After unexpected failovers, an availability group would not come online: Did not find the instance to connect in SqlInstToNodeMap key. This is how we solved it.