SolarWinds - Configuring Failover Timeout (the 'Heartbeat Missed' Event)



This Knowledgebase article provides information about configuring failover timeout.

More Information

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:

  1. Open the SolarWinds Failover Engine Manager, and navigate to the Server : Monitoring screen.
  2. Click Configure Failover to open the Server Monitoring: Failover Configuration dialog.
  3. Type a new numeric value (seconds) in the Failover timeout text box or use the arrow buttons to set a new value.
  4. 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
  5. Click OK to accept the changes or Cancel to dismiss the dialog without making any changes.

Applies To

SolarWinds Failover Engine , all versions

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