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Patroni Failover Test Scripts (Part 2 of the Patroni Series)
Your Patroni cluster looks healthy. Primary is up, replicas are streaming, and applications are connected. But the real question is simple: have you ever tested failover?
In production, untested failover is worse than no failover. A broken promotion, stale replication slot, or delayed leader election can turn a simple node crash into minutes of complete outage.
This guide provides real Patroni failover test scripts used by production DBAs to validate leader election, replica promotion, and client recovery — before incidents happen.