Sun Microsystems 2005Q2 quick start Starting Load Balancing, Verifying Load Balancing

▼To Create an HTTP Load Balancer Configuration

Steps 1. Create a load balancer configuration called MyLbConfig targeted to the cluster FirstCluster:

asadmin create-http-lb-config --target FirstCluster MyLbConfig

2.Enable the FirstCluster cluster and the clusterjsp application deployed in it for HTTP load balancing:

asadmin enable-http-lb-server FirstCluster

asadmin enable-http-lb-application --name clusterjsp FirstCluster

3.Create a health checker for the load balancer, which signals when an instance that goes down recovers.

asadmin create-http-health-checker --interval 10 --config MyLbConfig FirstCluster

The interval is the number of seconds the health checker waits between checks of an unhealthy instance.

4.Export the configuration to a file loadbalancer.xml.

asadmin export-http-lb-config --config MyLbConfig loadbalancer.xml

5.Copy loadbalancer.xml to:

web_server_install_dir/https-hostname/config/loadbalancer.xml

Starting Load Balancing

Start load balancing by starting or restarting the Web Server.

■If the Web Server instance serving as load balancer is not already running, start the Web Server software by executing the start program in the following directory:

web_server_install_dir/https-hostname

■If the Web Server instance serving as load balancer is already running, stop the server and start it using the start and stop programs in the following directory:

web_server_install_dir/https-hostname

Verifying Load Balancing

Once the application is deployed and the load balancer is running, verify that the load balancing is working.

20Sun Java System Application Server Enterprise Edition 8.1 2005Q2 Quick Start Guide