Installing › How to Convert from Conventional to Advanced Availability Configuration › Configure the Standby or Application Server › Configure the Load Balancer

Configure the Load Balancer

If you have one of more application servers, configure the load balancer to monitor the application servers.

Follow these steps:

1. Log in to an application server.
2. Copy the HealthServlet.war file from the $NX_ROOT/samples/HealthServlet directory to $NX_ROOT/bopcfg/www/CATALINA_BASE/webapps directory.
3. Restart CA SDM services or restart CA SDM Tomcat.
4. Repeat steps 1-3 for all the other application servers.
5. Configure the load balancer to monitor the following healthservlet URL on each application server:

   http://<Machine_name>:<Port_number>/HealthServlet/GetHealth
   

   • If a quescing response is received from the healthservlet URL of an application server, the load balancer must redirect all requests from that server to the other application servers. For example, the following response is received when the application server is quesced for 58677 seconds.

     Quiesce time remaining :58677 seconds
     

   • If an application server is healthy and no quescing is required, then the following response is received from the healthservlet of the server:

     Currently no Quiesce time set. Return code : -1
     

6. Configure the session persistence on each load balancer. This process ensures that a request coming from one application server is routed back to the same application server.