[AlwaysOn availability Groups] SQL Server error log (AG)

SQL Server error log (AG)

The SQL Server error log records the time that affects AG, such as:
1. Interacting with Windows failover clusters
2. Status of available replicas
3. Status of available data
Status of the 4.AG endpoint
Status of the 5.AG listener
Lease status for 6.SQL server resource DLLs and SQL Server instances
Error events for 7.AG

You need to check the error log when the following status occurs:
1. Unable to connect to the availability database
2. Unexpected AG fail-over
The resolving status of 3.AG is not expected
4.AG in no state of its certainty

[AlwaysOn availability Groups] SQL Server error log (AG)