Problem in Load Balancing (AJP)

[ali jan <sakaicle@xxxxxxxxx>]

Dear all 

we have deployed our university application in a cluster(did load balancing using AJP) using tomcat application servers and apache access sever.

Following is our apache httpd.conf configuration

ProxyPass / balancer://myCluster/ stickysession=JSESSIONID|jsessionid nofailover=On timeout=60

<Proxy balancer://myCluster>

    BalancerMember ajp://192.168.1.2:8009 route=sys02

    BalancerMember ajp://192.168.1.3:8009 route=sys03

</Proxy>

In apache access server error log we are getting following errors, and these errors started today, before today our system was running smoothly,

periodically user getting error "service temporally unavailable"

when users reporting this issue then we are resolving it by restarting apache access server.

However our tomcat instances are running fine.

[Thu May 12 18:13:32 2011] [error] proxy: BALANCER: (balancer://myCluster). All workers are in error state for route (sys03)

[Thu May 12 18:13:32 2011] [error] proxy: BALANCER: (balancer://myCluster). All workers are in error state for route (sys03)

[Thu May 12 18:13:32 2011] [error] proxy: BALANCER: (balancer://myCluster). All workers are in error state for route (sys03)

[Thu May 12 18:13:33 2011] [error] proxy: BALANCER: (balancer://myCluster). All workers are in error state for route (sys03)

[Thu May 12 18:13:33 2011] [error] proxy: BALANCER: (balancer://myCluster). All workers are in error state for route (sys03)

[Thu May 12 18:13:33 2011] [error] proxy: BALANCER: (balancer://myCluster). All workers are in error state for route (sys03)

[Thu May 12 18:13:33 2011] [error] proxy: BALANCER: (balancer://myCluster). All workers are in error state for route (sys03)

[Thu May 12 18:13:33 2011] [error] proxy: BALANCER: (balancer://myCluster). All workers are in error state for route (sys03)

[Thu May 12 18:13:33 2011] [error] proxy: BALANCER: (balancer://myCluster). All workers are in error state for route (sys03)

[Thu May 12 18:13:33 2011] [error] proxy: BALANCER: (balancer://myCluster). All workers are in error state for route (sys03)

On sys03 tomcat 1500 users sessions are created, while on sys02 tomcat only 100 sessions are created

Any help will be appreciated

Thanks