Changing IP addresses in high availability configurations

If you change the IP addresses of any of the Ethernet ports of the appliances in a high availability configuration, high availability operation is no longer available and data is likely to be partitioned.

High availability (HA) configurations use the eth13, eth17, and eth21 ports on both appliances in the HA. If you need to change IP addresses for any of these ports, you must use the following procedure:
  1. Remove the HA configuration on both appliances. You remove HA by removing queue managers from HA control, see Removing a queue manager from a high availability group by using the command line, and then removing the HA group itself, see Deleting a high availability group.
  2. Allocate new IP numbers to the Ethernet ports as required, observing the requirement that the addresses are on the same, dedicated subnet. See Configuring Ethernet interfaces by using the command line.
  3. Re-create the HA configuration by configuring the queue managers as described in Creating a high availability group by using the command line and Creating a high availability queue manager by using the command line.