Step H: Test Fail Over - AWS Elemental Delta

This is version 2.3 of the AWS Elemental Delta documentation. This is the latest version. For prior versions, see the Previous Versions section of AWS Elemental Delta Documentation.

Step H: Test Fail Over

To ensure the leader and secondary node fail over works as expected, test the fail over setup.

To test fail over

  1. Ideally, you should add at least one input so that AWS Elemental Delta is ingesting content. This setup provides a better test of the success of the failover.

  2. Perform a forced failover to the secondary leader (node B):

    1. On the web interface for the leader node, choose Nodes.

    2. On the panel for the secondary node, click the fail over button (family tree icon).

  3. Make sure the panels for both nodes show as green.

  4. Make sure that node B shows N/A (node is leader) in the following fields:

    • Following Node ID

    • Replication Lag

    • Last Heartbeat

  5. Display the Contents page and make sure that the content you created shows as Live-Active.

  6. Make sure that node A shows the following:

    • Following Node ID: The node ID for node B.

    • Replication Lag: A number below 10 seconds.

    • Last Heartbeat: A number below 10 seconds.

  7. Perform a forced fail over back to node A. Make sure that node A becomes the leader again and the content is still active.