Node group collection

Use this page to manage node groups. A node group is a collection of WebSphere Application Server nodes. A node group defines a boundary for server cluster formation.

Nodes that are organized into a node group should be enough alike in terms of installed software, available resources, and configuration to enable servers on those nodes to host the same applications as part of a server cluster. The deployment manager does no validation to guarantee that nodes in a given node group have anything in common.

Node groups are optional and are established at the discretion of the WebSphere administrator. However, a node must be a member of a node group. Initially, all Application Server nodes are members of the default node group. The default node group is DefaultNodeGroup.

A node can be a member of more than one node group.

[z/OS] An Application Server node must be a member of a sysplex node group. Nodes in the same sysplex must be in the same sysplex node group. A node can only be in one sysplex node group. Sysplex node groups are special node groups that the system manages.

[AIX HP-UX Linux Solaris Windows] [iSeries] [z/OS] Nodes on distributed platforms and the i5/OS platform cannot be members of a node group that contains a node on a z/OS platform. However, nodes on distributed platforms and nodes on the i5/OS platform can be members of the same node group.

To delete a node group, the node group must be empty. The default node group cannot be deleted.

To view this administrative console page, click System Administration > Node groups.

Name

Specifies a name for a node group that is unique within the cell.

Members

Specifies the number of members or nodes in the node group.

Description

Specifies a description that you define for the node group.




Subtopics
Related tasks
Managing node groups
Related reference
Node group member collection
Node group member settings
Reference topic    

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Last updated: Feb 19, 2011 5:25:36 AM CST
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