Setting up a WebSphere cluster
You can set up a WebSphere® cluster and deploy the Sterling Configurator Visual Modeler to the cluster.
A typical WebSphere cluster comprises:
- A deployment manager server
- Two or more applications servers running on the same or different machines: these are the cluster member servers
- A load balancing server: this is the Web server to which users point their
browsers and which distributes requests to the cluster member servers.
The following figure illustrates the WebSphere cluster configuration.
- Set up the deployment manager on a machine in your
network. It need not run on the same machine on any of the application
servers, but the deployment manager and application servers should
all be running on the same segment of a local area network. Start
the deployment manager (either through the UI or at the command line
websphere_home/AppServer/bin/, enter: startServer dmgr).
You use the deployment manager to manage the WebSphere cell: this is where the cluster is run.
- Install your application servers on the cluster member machines. Each cluster member machine is referred to as a node. You can create one or more application servers on each node.
- Start the node agent on each node: typically you
do this at the command line, by navigating to
websphere_home/AppServer/bin/and entering: startNode.
- The node agent is what the deployment manager uses to communicate with each node in its cell.
- Log in to the Deployment Manager administration UI.
- Add nodes to the cell by clicking Add Node in the Nodes panel. , and clicking
- For each node, add the application servers running
on the node to the cell by clicking New in the Application Servers panel. You must select
each node in turn and specify a unique name for each server on the
When you have completed creating all the application servers, then you must create the cluster.
, and clicking
- In the Deployment Manager UI, click New in the Server Cluster panel. , and then click
- Enter a name for the cluster and then without add servers to the cluster complete the creation of the cluster.
- Once the cluster is created, select the cluster
form the list of clusters. On the Server Cluster page, click Cluster
members and use the Cluster members page to add application servers
to the cluster.
When you have added all the application servers to the cluster, check that you can start and stop the cluster by clicking Start. Verify that the cluster starts without any errors, and then click Stop., check the check box for the new cluster, and click