Installation Guide › WebSphere Version › Manual EAR Deployment › Perform Post-Deployment Steps for the Cluster › Assign the Core Group Policy for the Cluster

Assign the Core Group Policy for the Cluster

To enable high availability and workload management in the cluster, a core group policy now exists for the message engine. This policy, IMSPolicy, defines the preferred cluster member to use for the message engine. If that cluster member fails, the message engine switches to another cluster member, but returns to the preferred cluster member when it becomes available again.

Perform the following procedure once for each cluster member to add cluster members to this policy. For more information about this topic, see Setting up Preferred Servers in the Default Messaging Provider section of the WebSphere System Management and Administration Redbook.

Follow these steps:

1. In the WebSphere Console, locate the IMSpolicy.

   It is under Core Group, Default Core Group, Policies.

2. Select Preferred Servers.

   A list of Core Group Servers appears.

3. Add each cluster member under Preferred Servers.

   Do not select node agents or the Deployment Manager.

   The first cluster member in the list is the one that the messaging engine uses by default. Move the cluster member up or down in the list until they appear in the order in which they should be used.

4. Click OK to save the changes.