Web and Application Services Example

HADB, which is used for high availability session storage, works with Application Server to provide failover capabilities that include session persistence.

This example provides guidelines for implementing a two-node HADB cluster with load balancing. However, a preferred solution is to install HADB on four hosts with nothing else installed on them. The domain administration server (DAS) with a copy of HADB for administration and a load balancer and Web Server would be installed on a separate host.

On a partitioned operating system, a preferred solution is to install two host servers with at least one HADB process running on each.

To Install Web and Application Services: : Example Sequence

The general tasks include:

• Installing the Java ES components

• Starting the servers

• Configuring load balancing

The following example shows how to install all Java ES components on a node. On subsequent nodes, install the Java ES components required by your deployment. A minimum of two installation sessions are required.

Before You Begin

• Application Server requires a local copy of HADB and Message Queue.

• Application Server and HADB must be on the same host so you can use the integrated management tools provided by Application Server.

• Load Balancing Plug-in subcomponent of Application Server requires a Web Server. This example uses the Sun Java System web container.

1. Check the installation sequence guidelines.

   Check which guidelines apply to this example and make adjustments as needed. Refer to Table 2–1.

2. Check the installation prerequisites.

   Check which tasks you might need to perform for this installation before starting. Refer to Table 1–1.

3. Run the Java ES installer.

4. Choose the type of installation, select Custom.

5. Select the Configure Automatically During Installation type.

   Message Queue requires no configuration.

6. At component selection, choose Application Server.

   Message Queue, HADB, and all the subcomponents of Application Server except the Application Server Node Agent and Load Balancing Plug-in are automatically selected.

7. Expand the Application Server component and select Load Balancing Plug-in.

   ---

   Note –

   You must install the Web Server and Load Balancing Plug-in using the same access permissions.

   ---

8. Resolve incompatibilities.

   The installer verifies software on your host and provides guidance if incompatibilities are identified.

9. Run the installation.

10. View the Installation Summary and Log.

11. Start the Java ES components.

12. Complete load balancing configuration.

    Refer to the Chapter 5, Configuring HTTP Load Balancing, in Sun Java System Application Server Enterprise Edition 8.2 High Availability Administration Guide.