Configuration Wizard Screens 3-21
3.17 Configure Clusters
A cluster is a group of Application Servers that work together to provide scalability and high availability for applications. By creating clusters, you can group servers such
that they operate as a single unit for hosting applications and resources.
Use this screen to add a cluster and select the Application Server that will be the primary cluster member of the cluster. All additional cluster members are cloned from
this primary cluster member. After creating a cluster, you can add additional Application Servers to the cluster on the next screen.
You can also use this screen to delete a cluster or modify the settings for an existing cluster.
To create a cluster:
1. Click Add. A new line appears in the table. The default name for a new cluster is
new_Cluster_n, where n starts at 1 and increments for each new cluster that you add. To change the default, enter the new name in the Name column. The name of
the cluster must be unique among all component names within the cell.
2. Select an existing Application Server as the primary member of the cluster by
selecting the server from the First cluster member list. Only Application Servers that are not yet assigned to a cluster are displayed on this list.
3. Repeat Steps 1 and 2 for each additional cluster that you want to create.
4. When you are done, click Next. You can add additional servers to the cluster on
the Configure Additional Cluster Members
screen, which is displayed when you
click Next. Note:
Any changes you make on this screen are not saved in the cell
configuration until you click Create on the last Configuration Wizard screen. If you exit the wizard, or click Previous to return to an earlier
screen, you must make the changes again.
3-22 Configuration Guide for IBM WebSphere Application Server
To delete a cluster, select the cluster and click Delete. When you delete a cluster, you do not delete the Application Server that is the primary cluster member; it is merely
removed from the cluster. You can delete only one cluster at a time.
To change the settings for a cluster, select the cluster and make the appropriate changes.
To switch the display from the default table format to a tabbed format with one tab for each cluster, click Switch Display. Click Switch Display again to return to table
format.
When you are done configuring your clusters, click Next to continue.
For more information about clusters in an IBM environment, see the IBM WebSphere documentation.
3.18 Configure Additional Cluster Members
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