Node Manager

Use the Node Manager feature provided by WebLogic Server to start managed servers automatically, or to restart failed managed servers. Node Manager provide remote start of managed servers for administrators from either administration server or from command line (weblogic.Admin START…). This can be achieved by communicating to the administration server and without relying on OS specific remote login features.

Also in addition to starting and killing managed servers, Node Manager can also monitor the health of the servers started by it. In case of failure if configured Node Manager can automatically restart the managed servers.

Tips

1. When using the Node Manager, configure all remote-start attributes for a managed server explicitly, rather than relying on the node manager's environment for a managed server's configuration.

2. Node Manager receives it request only from administration server. It is not possible to restart a managed server remotely through Node Manager when administration server is not available.

3. Configure Node Manager as a service/daemon.

4. Enable automatic restart of managed server.

5. Configure auto kill if failed to bring down a failed instance before Node Manager tries to restart it.

6. Node Manager running on a machine can be share by multiple managed servers running on that machine.

7. A Node Manager can also be shared by managed servers from multiple domains running in the same machine.