[MQ 9.3.1 Oct 2022]

Migrating an RDQM configuration from RHEL 7 or RHEL 8 to RHEL 9

If you upgrade from RHEL 7 or RHEL 8 to RHEL 9, you must create a new Pacemaker cluster and migrate your replicated data queue managers (RDQMs) to the new cluster.

About this task

You must set up a separate RHEL 9 cluster and migrate each RDQM HA queue manager to it, using a backup and restore procedure. If you use a floating IP address to connect to an RDQM queue manager then you must recreate that floating IP address on the RHEL 9 cluster.

Procedure

  1. Configure three RHEL 9 nodes.
  2. Install IBM® MQ Advanced on each of them, see Installing IBM MQ Advanced for Multiplatforms.
  3. Configure a new Pacemaker cluster to create a new HA group, see Defining the Pacemaker cluster (HA group).
  4. Recreate each queue manager that you want to from the existing RHEL 7 or RHEL 8 HA Group, see Creating an HA RDQM.
  5. For each RDQM queue manager to be moved, complete the following actions:
    1. End the RDQM queue manager on the RHEL 9 node.
    2. End the RDQM queue manager on the RHEL 7 or RHEL 8 node.
    3. Take a backup of the RDQM queue manager, its config and its data as required, on the RHEL 7 or RHEL 8 node, see Backing up and restoring IBM MQ queue manager data.
    4. Restore the backup on the RHEL 9 node.
  6. Start the RDQM queue manager on the RHEL 9 node.
  7. If required, configure the floating IP address on the RHEL 9 HA group, see Creating and deleting a floating IP address.
  8. After you confirm that the RDQM queue manager is working correctly on the RHEL 9 HA group, delete the queue manager from the RHEL 7 or RHEL 8 HA group, see Deleting an HA RDQM.