Fix Pack 8550

Liberty profile: Server clusters

A Liberty profile can be configured into a server cluster for application high availability and scale.

Note: The collectiveController-1.0 feature and its capabilities are available only in IBM® WebSphere® Application Server Liberty Network Deployment. Fix Pack 8550 The feature is not available in IBM WebSphere Application Server Liberty, IBM WebSphere Application Server Liberty - Express®, or IBM WebSphere Application Server Liberty Core.
A Liberty server cluster is comprised of two or more Liberty profiles configured into a server cluster within a Liberty collective. A Liberty server cluster has a unique name within the collective. The collectiveController-1.0 feature supports several operations on Liberty server clusters through the ClusterManager MBean:
  • List clusters
  • Start cluster
  • Stop cluster
  • List cluster members
  • Generate cluster plug-in configuration

To be part of a server cluster, a Liberty profile must be a member of a Liberty collective and also be configured with the clusterMember feature.

A collective member can be a member of only one server cluster. All cluster members must be members of the same collective. Multiple server clusters can be configured within the same collective. The following diagram illustrates these relationships.

Figure 1. Liberty profile server clustersA collective member can be a member of one and only one server cluster. All cluster members must be members of the same collective.

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Timestamp icon Last updated: Monday, 21 April 2014
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