The Sun Cluster HA for Sun Java System Application Server is a data service with appropriate extension properties to configure a failover application server mastered by one node at a time. A domain's administrative server can also be made highly available as a failover resource. Web clients can connect directly to the Sun Java System Application Server.
Use of the Sun Java System Application Server command-line or GUI administration tool is restricted in a clustered environment. Before you configure application instances and the administrative server into resource groups, see Configuration Restrictions for information about using asadmin or the Sun Java System Application Server Administrative Interface in your cluster. See “Configuration Guidelines for Sun Cluster Data Services” in Sun Cluster Data Services Planning and Administration Guide for Solaris OS for more information about configuring resources and resource groups.
Use the standard configuration in this section to plan the installation and configuration of the Sun Cluster HA for Sun Java System Application Server. The Sun Cluster HA for Sun Java System Application Server might support additional configurations. However, you must contact your Enterprise Services representative for information on additional configurations.
The following figure illustrates a standard failover configuration for a Sun Java System Application Server that runs on a two-node cluster. See Configuration Restrictions for additional information about configuring Sun Cluster HA for Sun Java System Application Server as a failover data service.