Siebel System Administration Guide > Configuring the System Architecture > Configuring Siebel Server Load Balancing >

Revising the Third-Party HTTP Load Balancer Configuration

You must revise the third-party HTTP load balancer configuration or edit the Siebel Web Server Extension file (eapps.cfg) if you do either of the following:

• Add or remove a Siebel Server that is load-balanced.
• Enable or disable an Application Object Manager that is load-balanced.

Prerequisites

• Verify that all the Siebel Servers you want to load-balance are running.
• Verify that the Application Object Managers (AOMs) you want to load-balance are running. Disable any AOMs you do not want to load balance.
• Obtain the virtual IP (VIP) address and port number for the load balancer.
• Review the layout of the load balancing configuration file.

Several of the steps in the following procedures are about manually modifying the configuration of the load balancer. If a script is available that automatically imports server configurations, run this script instead.

To add or remove a Siebel Server

1. Run the SWSE configuration wizard.

   See the Siebel Installation Guide for the operating system you are using.

   This updates the Siebel Web Server Extension configuration file (eapps.cfg) to reflect the new or removed server.

2. Create a new load balancing configuration file (lbconfig.txt).

   This updates the URL mappings in the file to reflect the new or removed server.

3. Use a text editor to view the load balancing configuration file (lbconfig.txt).

   Use the file to obtain URLs for editing rules in the steps below.

4. Start the load balancer configuration software.
5. Update the resource group definitions to reflect the added or removed server.
6. Revise the component and round-robin rules to reflect the added or removed Application Object Manager (AOM) running on the server.
7. If adding a server, create a server rule. If deleting a server, delete the server rule.
8. Save the configuration.

To add or remove an Application Object Manager on a Siebel Server

1. Run the SWSE configuration wizard.

   See the Siebel Installation Guide for the operating system you are using.

   This updates the Siebel Web Server Extension configuration file (eapps.cfg) to reflect the new or removed (disabled) Application Object Manager.

2. Use a text editor to view the load balancing configuration file (lbconfig.txt).

   Use the file to obtain URLs for editing rules in the steps below.

3. Start the load balancer configuration software.
4. Revise the component and round-robin rules to reflect the added or removed Application Object Manager (AOM).
5. If adding a new AOM with a new VIP, edit the object manager connect string for the AOM in the Siebel Web Server Extension configuration file (eapps.cfg).

   The default location of the configuration file is \bin\eapps.cfg in the Siebel Web Server Extension installation directory.

6. Save the configuration.

No changes are required to the server rules that manage reconnection requests in the load balancer.