Identifying Monitoring Failure

If monitoring is enabled, as described in Enabling Monitoring, and the status in the output of the show server or show group commands is unknown or unreachable, then the server or server group is not being reached successfully for monitoring. If the status remains unknown or unreachable over the duration of less than five polling intervals, it is possible that a transient network problem is occurring. However if the status remains unknown or unreachable over the duration of more than five polling intervals, it is possible that monitoring has failed. This could be the result of a failure in the monitoring agent.

A time stamp is provided in the monitoring data output. The relationship between this time stamp and the value of the polling interval can also be used to judge if there is an error with the monitoring agent. If the monitored output for a provisionable server continues to show the same timestamp, even after several polling intervals have passed, this indicates that the provisionable server has not been successfully polled, and is no longer being monitored. This could be the result of a failure in the monitoring agent.