Wednesday, December 28, 2011

WebSphere Application Server Node Agents

Node Agents in WebSphere Application Server 

A Websphere Node is a logical grouping of server processes managed by WebSphere and that share common configuration and operation control. A node is a grouping of managed or unmanaged servers. A node usually corresponds to a logical or physical computer system with a distinct IP host address. Nodes cannot span multiple computers. Node names usually are identical to the host name for the computer.

Nodes in the network deployment topology can be managed or unmanaged. A managed node has a node agent process that manages its configuration and servers. Unmanaged nodes do not have a node agent.

A node corresponds to a physical computer system with a distinct IP host address. The node name is usually the same as the host name for the computer. The following table lists the nodes in this cell. You can add new nodes into the cell by clicking on "Add Node" and specifying a remote, running WebSphere Application Server instance.

The Websphere Node Agent represents the node in the management cell and keeps the configuration up to date. Node agents are administrative agents that represent a node to your system and manage the servers on that node. Node agents monitor application servers on a host system and route administrative requests to servers.

A Websphere Node Group is a new concept introduced with WebSphere Application Server V6. A node group is a grouping of nodes within a cell that have similar capabilities. A node group is a collection of managed nodes.

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