Table of Contents

Viewing the current Failover DMA status

In the Failover Config window, the current status of the two DMAs is displayed by means of LEDs, which are refreshed once a minute.

These LEDs can have one of the following three colors:

  • Green: No problems detected.

  • Red: A problem has been detected.

  • Transparent: Status information is being retrieved.

To view more detailed information, click the Status button at the bottom of the dialog box.

This will open the Status dialog box, which displays a number of status parameters for both DMAs.

Note
  • For some of these parameters, extra information can be displayed. For example, for heartbeats or DB sync, you will also see the “last success” time and, in case of failure, the reason for that failure.
  • If no status information can be retrieved from a DMA, you will notice an Agent Status item with the value “Unreachable”.
  • If a Cassandra cluster per DMA is used, and both database instances are down, the system will fall back to file offloading. See also: Switching to Cassandra in a Failover setup. Note that we recommend switching to Storage as a Service instead.

  • Failover Status: “Online”, “Offline”, “Going Online”, etc. This parameter does not have a color.

  • Configuration: “Valid” or “Invalid”

    “Invalid” means that there is some kind of problem with the Failover configuration. In that case, more information can be found in the Failure Reason column.

  • Heartbeat/Inverted Heartbeat/Ping to XX.XX.XX.XX: “Success” or “Failing”

    In case of “Failing”, a reason and count will be displayed. The time of the last successful heartbeat/ping is also listed.

  • Sync Connection: “Available” or “Not Available”

    In case of “Not Available”, a reason will be displayed. This status is only available for the DMA that is currently online.

  • DB Sync: “Active” or “Failing”

    • "Active" means there has been at least one successful forward operation.

    • "Failing" means there is a problem with the forwarding of alarm events to the backup DMA. More information will be displayed in the Failure Reason column. The time of the last successful DB Sync check is also listed. This status is only available for the DMA that is currently online.

  • DB Sync Stack: “OK” or “Too Large”

    When this status is in error, but the DB Sync status is not, the sync might be going on, but it might not be able to keep up. The amount of queries/files left to be forwarded is also listed between brackets. This status is only available for the DMA that is currently online.

  • RTE Count: The current number of runtime errors on the DataMiner Agent.

  • NIC X: “Available” or “Unavailable”

    These items provide information about the network interfaces. They are only present after an NIC has been disconnected or reconnected.

  • Database: “OK” or “Failing”

    This status is the result of the following database query:

    select count(*) from slenumvalues

    “Failing” means that the database server is probably not running or that there is a configuration issue.

Tip

See also: Viewing DMA synchronization information

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