4.3.1  Server Clustering Procedure

Clustering support in Enterprise Manager is based on server-side load distribution. A Proxy/Load-Balancer application serves as the sole interface to all clients, and manages the communication to individual server instances (cluster nodes).

The recommended cluster configuration is shown below. Note that the Load Balancer can be installed on the same physical machine as Node 1 if desired.

Figure 4. A Load Balanced Cluster

 

To set up a clustered environment, follow the steps below:

1. Install Node 1, containing the Repository servlet and Administra­tion servlet. See Installing Node 1 for Repository and Admin Serv­lets.

2. Install Node 2 to Node N. See Installing Additional Nodes for Repository Servlets.

3. Install the Load Balancer. See Installing the Load Balancer Proxy.

4. Define the cluster nodes in Enterprise Manager. See Defining the Cluster Nodes.

All cluster nodes share a common repository directory (SREE Home) which is specified as a context parameter in the deployment descriptor file (web.xml). To specify server properties for specific machines in the cluster, see Assigning Machine-Specific Properties.

See Also

Distributed Materialization in a Clustered Environment, for details on Viewsheet materialization.

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