To Create a WebLogic Cluster

A WebLogic server cluster consists of multiple WebLogic server instances running simultaneously and working together to provide increased scalability and reliability. A cluster appears to clients to be a single WebLogic server instance. The server instances that constitute a cluster can run on the same machine, or can be located on different machines. Each server instance in a cluster must run the same version of WebLogic server.

In the N1 Grid Service Provisioning System environment, you must create a cluster, then create the managed servers that are in that cluster. While creating the managed server, one of the optional arguments in the variable list is the cluster host name. When installing a managed server, this cluster host name is used to create a dependency on it. If you create the managed servers before the cluster, there will be no cluster host and therefore the dependency creation will fail.

Steps

1. From the Common Tasks section in the browser interface, click WebLogic.

2. On the WebLogic Common Tasks page, click Manage Clusters.

3. On the Components Details page for the WebLogic cluster component, click the Run action next to default:install.

4. To set variables for this cluster, click Select from List in the Plan Parameters section of the window.

   • To create a new set of variables that have different values from the default values, click Create Set.

     The Select Variable Setting From List window appears.

     1. In the text field at the top of the table, enter the name of the new variable settings set.

     2. To specify the name of the cluster, click the box next to targetName and type the cluster name into the field.

     3. After updating the component variable values, click Save.

        The new variable settings display in the table.

     4. Click Select.

   • To use variable settings for another component, click Import Set.

     The Import Variable Settings window displays.

     1. If necessary, navigate to the Folder that contains the component with the variable settings to import.

     2. Select the component version.

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        Note –

        Variable settings can vary between component versions.

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     3. Click Import Variable Settings.

        The imported variable settings display in the table.

     4. Click Select.

5. Select the target WebLogic Admin server on which to define the cluster.

6. Click Run Plan (includes preflight).

7. Create server instances to be part of the cluster, as described in