SQL Cluster : 2 nodes with Default Quorum (Node Majority) setup;
Testing with Shutdown Primary sqlserver service and verify if the database failover to secondary Availability Replicas and secondary availability promote to Primary Replicas
Availability Group Properties
Synchronous commit , Failover mode = Automatics
SQL-A primary, SQL-B secondary
Shutdown SQL-A, SQLService to simulate Primary SQLServer (SQL-A) fail and see if the database will auto-failover to SQL-B
SQLServer SQL-B become Primary Replicas; Auto-Failover is happen when SQL-A fail.
From Replicas, we can see SQL-A become secondary and down
SQL AG (alwaysonag)Dashboard
SQL-B error log
SQL-B:
Availability Replica status : SECONDARY_NORMAL -- RESOLVING_NORMAL -- PRIMARY_PENDING -- PRIMARY_NORMAL
Availability Group database status : SECONDARY - RESOLVING --PRIMARY
Bring back SQLService - SQL-A
SQL-B still act as Primary Availability Replicas
SQL-A is back online and show as Secondary Availability Replicas
SQL-B : SQL Error log
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