Java Management Extensions

 

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overview

Java Management Extensions (JMX) is the Java standard for managing application resources. The management architecture that is defined by JMX is divided into three levels:

 

Java Management Extensions in WebSphere Application Server

Java Management Extensions (JMX) is at the core of Application Server administration capabilities. The application server contains a JMX agent. All of the system components are defined as MBeans. The JMX agent in Application Server supports three types of connectors

All of the administration tools included with Application Server use these JMX facilities to accomplish their functions.

In a stand-alone Application Server installation, servers exist and are administered individually. An administrative client connects directly to the Application Server in this environment. In a Network Deployment installation, a hierarchical topology groups application servers within nodes and groups nodes within a cell. Administrative servers exist at the node level (node agents) and at the cell level (the deployment manager), and act as aggregation points for the administrative services in the subordinate servers.

MBeans in all servers on a node are visible through that node agent, and MBeans in all nodes are visible through the deployment manager. Therefore, by connecting to the deployment manager, one can invoke operations, can get and set attributes, and can receive notifications for any MBean in the cell. Application Server provides an AdminService class that reflects the standard JMX MBeanServer interface, and wraps the MBeanServer interface so that it takes part in implementing this distributed management functionality.


 



 

 

WebSphere is a trademark of the IBM Corporation in the United States, other countries, or both.
IBM is a trademark of the IBM Corporation in the United States, other countries, or both.