Automatic Failover

When your master server fails, Tergum automatically redirects traffic to the slave.

Failover Process

1. Detection: Master heartbeats stop (60-90 seconds)
2. Verification: Confirm slave is healthy
3. DNS Update: Cloudflare DNS pointed to tunnel
4. Notification: Email sent to configured addresses

What Changes During Failover

• DNS record updated to Cloudflare Tunnel endpoint
• Traffic flows through tunnel to slave server
• Master can be offline for recovery

After Failover

Your options:

1. Fix master and fail back: Restore master, sync data, update DNS
2. Promote slave permanently: Continue using slave as new master

Manual Failover

Trigger failover manually from dashboard:

1. Go to domain settings
2. Click "Trigger Failover"
3. Confirm action

Useful for testing or planned maintenance.