Sun Java System Application Server Enterprise Edition 8.1 2005Q2 High Availability Administration Guide

What Is a Node Agent?

A node agent is a lightweight process that is required on every machine that hosts server instances, including the machine that hosts the Domain Administration Server (DAS). The node agent:

When you install the Application Server, a node agent is created by default with the host name of the machine. This node agent must be manually started on the local machine before it runs.

You can create and delete server instances even if the node agent is not running. However, the node agent must be running before you use it to start and stop server instances.

If you stop the node agent, the server instances it manages are stopped too.

A node agent services a single domain. If a machine hosts instances running in multiple domains, it must run multiple node agents.

See Also