Installation Guide › WebLogic Version › Installation on a WebLogic Cluster › WebLogic Clusters

WebLogic Clusters

A WebLogic Server cluster consists of multiple WebLogic Server instances that work together to provide increased scalability and reliability.

Note: Before you configure a WebLogic cluster, you should be familiar with WebLogic clusters and JMS objects. See Oracle WebLogic 11 Documentation.

WebLogic clusters include the following components:

• One Administration Server, which configures and manages the WebLogic Server instances in its domain
• Managed Server nodes, each of which run the CA IdentityMinder Server
• Node Manager, a WebLogic Server utility that enables you to start, shut down, and restart Administration Server and Managed Server nodes from a remote location.

  You install the Node Manager on each WebLogic server in the cluster.

The following figure shows the relationship between the Administration Server and three Managed Server nodes in a WebLogic cluster.