HPOS 4.0 technical note 3

HP Web Services for Output Server 55

Using HP Web Services for Output Server

JBoss clustering with Apache load balancer on multiple machines

# worker.node1.connection_pool_size=10 (1)

# Define Node2

# modify the host as your host IP or DNS name.

worker.node2.port=8009

worker.node2.host= node2.mydomain.com or IP address of machine 2

worker.node2.type=ajp13

worker.node2.lbfactor=1

# worker.node1.connection_pool_size=10 (1)

# Load-balancing behaviour

worker.loadbalancer.type=lb

worker.loadbalancer.balance_workers=node1,node2

# Status worker for managing load balancer

worker.status.type=status

6. In the APACHE_HOME/conf directory, create uriworkermap.properties and populate it as follows:

# Mount the Servlet context to the ajp13 worker

/HPOSGateway=loadbalancer

/HPOSGateway/*=loadbalancer

/HPOSGateway=loadbalancer

/HPOSGateway/*=loadbalancer

7. Restart the Apache server.

8. Edit the JBoss_HOME/server/node1/deploy/jboss-web.deployer/server.xml as follows:

• Locate the <Engine….> element and add an attribute jvmRoute:

</Engine>

The jvmRoute attribute must match the name specified in the workers.properties file.

•In the server.xml file, ensure that the AJP 1.3 Connector is uncommented, as follows:

<Connector port="8009" address="${jboss.bind.address}"

emptySessionPath="true" enableLookups="false" redirectPort="8443"

protocol="AJP/1.3"/>

9. Repeat step 8 on machine 2, but set jvmRoute="node2".

10. Edit the

JBoss_HOME/server/all/deploy/jboss-web.deployer/META-INF/jboss-service.xml

file (replace /all with your own node name).

Locate the <attribute> element with a name of UseJK, and set its value to true as follows:

11. Repeat step 10 on machine 2.

12. Restart the JBoss application server on both the machines.