WebSphere Application Server Network Deployment, Version 6.0.x     Operating Systems: AIX, HP-UX, Linux, Solaris, Windows

Adding members to a cluster

You create an application server as a member of a configured cluster.

Before you begin

Create a cluster if you do not already have a configured cluster. See Creating clusters for more information.

Why and when to perform this task

If you are migrating from a previous version of WebSphere Application Server, you can upgrade a portion of the nodes in a cell, while leaving others at the other release level. For a time, you might be managing servers that are at a previous release level and servers that are running at the newer release in the same cell. In this mixed environment, some restrictions apply regarding what you can do with clusters and cluster members:
  • You cannot create a cluster member using a server that is running on WebSphere Application Server Version 5.x.
  • You cannot add a member that is running WebSphere Application Server Version 5.x to any cluster.
  • You can add a new WebSphere Application Server cluster member to a mixed cluster, only if the cluster already contains a member that was upgraded from WebSphere Application Server Version 5x and is running at the current release level. All new cluster members must be running at the current release level.

To create a new cluster member, view information about existing cluster members, or manage existing cluster members:

Steps for this task

  1. In the administrative console, click Servers > Clusters > cluster_name > Cluster members. The Cluster members page lists members of a cluster, and for each member indicates:
    • The nodes on which the member resides.
    • Whether the member is started, stopped, or encountering problems.
  2. Click New to create a new cluster member. Clicking New starts the Create a New Cluster wizard that you also use to add new members to an already configured cluster.
    1. Specify a name for the cluster member (application server). The name must be unique within the cell.
    2. Select the node for the cluster member.
    3. Specify the server weight. The weight value controls the amount of work that is directed to the application server. If the weight value for the server is greater than the weight values that are assigned to other servers in the cluster, then the server receives a larger share of the workload. The value can range from 0 to 20.
    4. Specify whether to generate a unique HTTP port.
    5. Specify the server template.
    6. Click Apply to finish defining the cluster member.
    7. When you finish defining additional cluster members, click Next.
    8. Review the summary of information on new cluster members and click Finish to create the additional cluster members.
  3. Click Save to save your changes.

Result

You created application servers that are members of an existing server cluster.

What to do next

You can:



Sub-topics

Related tasks
Balancing workloads with clusters
Creating cluster members using scripting

Task topic    

Terms of Use | Feedback

Last updated: Dec 11, 2005 4:07:15 PM CST
http://publib.boulder.ibm.com/infocenter/wasinfo/v6r0/index.jsp?topic=/com.ibm.websphere.nd.doc/info/ae/ae/trun_wlm_member.html

© Copyright IBM Corporation 2002, 2005. All Rights Reserved.
This information center is powered by Eclipse technology. (http://www.eclipse.org)