HA Core software upgrade procedures

The procedure below describes the required steps to upgrade the Core servers in an HA environment. This procedure is critical because the Core HA replication process has built-in checks to enforce that replication can only occur between Cores with the same software version. Replication will not occur if they are not at the same software release level. This procedure assumes you are logging into the System Manager Portal of both the Primary and Secondary Core servers. If you are not, do so now.

Procedure 

1. Disable HA on the Secondary Core.

2. Ensure that any currently running replication process is allowed to complete before upgrading the Core.

   Do not proceed unless the Last Sync Status has a date/time in the Completed: field and Success is displayed for Result.

3. Disable the load balancer from detecting any of the HA Cores from becoming unavailable and failing over.

4. Upgrade the Secondary and validate the upgrade.

   • Make this server Primary so you can download the Core upgrade software (allowing the server to connect to support portal)

   • Upgrade and validate the upgrade.

   • Return the server mode back to Secondary.

5. Upgrade the Primary Core and validate the upgrade.

6. Enable HA on the Secondary.

7. Perform test and validation on the Core HA environment. Complete the steps outlined in the Step 7 – Test and validate the Core HA environment section.

8. Review and update the rest of the HA configuration parameters, especially the StartTime and Run Every parameters, as these will most likely need to be updated.

9. Re-enable the load balancer.

At this point, the HA environment is back to normal operation with all Cores running on the same software release version.