3.3.4 Creating the WebSphere cluster

You must now create the WebSphere cluster by perform the following tasks:

  • Creating the cluster by using the Deployment Manager.

  • Configuring the distributed environment settings for the cluster.

  • Add ports and host aliases for WebSphere Application Server instances of the cluster.

By default, the WebSphere Administrative Console web application listens on port 9060.

To create a cluster using the Deployment Manager:

  1. Log in to the WebSphere Administrative Console of the computer hosting Deployment Manager.

  2. In a web browser, enter the URL to the Deployment Manager; for example, type http://<servername>:<port>/ibm/console

    Note: By default, the Deployment Manager Administrative Console web application listens on port 9060.

  3. In the WebSphere Administrative Console navigation tree, click Servers > Clusters > WebSphere application server clusters , and then click New .

  4. In the Enter Basic Cluster Information box, enter the name of the cluster; for example, type ds_cluster .

  5. In the Member name box in the right pane, enter a member name. This name is for the first in the cluster.

  6. In the Select Node list, select the node that this cluster member will reside on.

  7. Select Create the member using an application server template , select default from the list, and then click Next .

  8. In the Member Name box, enter the name of another member to add to the cluster.

  9. In the Select Node list, select the node that this cluster member will reside on.

  10. Select Generate unique HTTP ports and click Add Member .

  11. Repeat steps 8 to 11 to add WebSphere Application Servers to the cluster, entering the new member name.

  12. After you add all members, click Next .

  13. Click Finish and then click Save .

  14. Click System Administration > Save Changes to Master Repository , select Synchronize changes with Nodes , and then click Save .

To configure distributed environment settings for the cluster:

  1. In the WebSphere Administrative Console navigation tree, click System administration > Nodes , and ensure that the nodes are listed, that their status is Synchronized , and that all WebSphere Application Server instances of the cluster are started.

  2. Click Servers > Server Types > WebSphere application servers and, in the right pane, click the server name.

  3. Click the Configuration tab and, under Container Settings , click Session management .

  4. Under Additional Properties, click Distributed environment settings .

  5. Under General Properties, click None and then OK.

  6. Click Save directly to the master configuration.

  7. On the next screen, under Additional Properties, click Distributed Environment Settings and Click custom tuning parameters.

  8. Select Low (optimize for failover) and then click OK .

  9. In the navigation tree, click Servers > Application servers and, in the right pane, click the server name.

  10. Under Performance, select Performance Monitoring Infrastructure (PMI) .

  11. On the next screen, select Enable Performance Monitoring Infrastructure (PMI) .

  12. Under Currently Monitored Statistics Set, select Basic and then click OK .

  13. Repeat steps 2 to 13 for each server in your cluster.

  14. In the Messages box, click Save directly to the master configuration .

To configure WebSphere Application Server ports and aliases:

  1. In a web browser, type the URL to the Deployment Manager; for example, type http://<servername>:<port>/ibm/console

    Note: By default, the WebSphere Administrative Console listens on port 9060.

  2. In the navigation tree, click Servers > Application servers and, in the right pane, click the server name.

  3. On the next screen, under Communications, click Ports .

  4. In the table, click WC_defaulthost and assign a port address.
    Note: For vertical clusters, set a unique address for each server in the cluster. For horizontal clusters, each server can have unique or identical address.

  5. Repeat steps 2 to 4 for each server in the cluster.

  6. Click Save directly to the master configuration .

  7. In the navigation tree, click Environment > Virtual Hosts and, in the right pane, click default_host .

  8. Under Additional Properties, click Host Aliases .

  9. On the next screen, click New and add the port you assigned for a server in the cluster.

  10. In the Host Name box, enter an asterisk (*).

  11. Repeat step 9 and 10 for each port that is assigned in step 4.

  12. Click OK and then click Save directly to master configuration .

  13. Restart the server. Click Servers > Server Types > WebSphere application servers , select the check box beside the server name, and then click Restart .

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