8.4. Replacing an HA Pair Node

When replacing a node in an HA pair, the following steps should be used:

  1. If configuration changes need to be made before the node is replaced (so the pair has only one working node) then the HAMemberNode object property IncludeInDeploy should be set to a value of No for the node that is not working. This will mean that InCenter will not try to deploy configuration changes to this node. Deployment will fail if this setting is not changed and the node is not operational.

  2. Remove the old node and replace it with an identical node so that its network connections are the same.

  3. Connect to the new node locally and set its management IP address to be the same as the old unit. This will allow InCenter to communicate with it.

  4. Use the export command in the InCenter CLI to force the current configuration into the new node. For example:

    admin@InCenter:/> node my-hapair export

    This command does not require an activate and commit sequence.

  5. If IncludeInDeploy was disabled in the first step, this must be enabled again before the new configuration can be deployed to the new node.