This Knowledgebase article provides information about configuring failover timeout.
You can configure how long SolarWinds Failover Engine waits after it detects a missed heartbeat before it takes a pre-configured action. When choosing this value, consider the following:
- Setting the number of heartbeats to a high value increases the time interval before a failover. As a result, the active server might stay unavailable too long before the passive server initiates the failover process.
- Setting the number of heartbeats to a low value for a server pair that has low Channel bandwidth, may cause split-brain syndrome. For more information about split-brain syndrome, see KB 1474 — Resolve Two Active Servers .
To configure failover timeout:
- Open the SolarWinds Failover Engine Manager, and navigate to the Server : Monitoring screen.
- Click Configure Failover to open the Server Monitoring: Failover Configuration dialog.
- Type a new numeric value (seconds) in the Failover timeout text box or use the arrow buttons to set a new value.
Mark or clear the following optional check boxes to select the actions to take if the specified Failover timeout is exceeded:
- Failover from Primary server to Secondary server if channel heartbeat is lost for failover timeout
- Failover from Secondary server to Primary server if channel heartbeat is lost for failover timeout
- Prevent failover or auto switchover while not synchornized (recommended)
- Prevent failover if channel heartbeat is lost but Active server is still visible to other servers (recommended)
- Make the server passive if the Channel and Public networks are lost for the configured failover timeout
- Click OK to accept the changes or Cancel to dismiss the dialog without making any changes.
SolarWinds Failover Engine , all versions