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6.2. Configure a Load-balancing Proxy Using the HTTP Connector
Read this section to configure a load balancing proxy that uses the JBoss HTTP Connector.
Task: Configure a Proxy Server Listener
Follow this task to configure a JBoss Enterprise Web Server Apache service to act as a load-balancing proxy using the JBoss HTTP Connector.
Prerequisites
- Install JBoss Enterprise Web Server. Refer to JBoss Enterprise Web Server Installation Guide for details.
- Install JBoss HTTP Connector modules. Refer to Chapter 5, Install Proxy Server Components for details.
Create a listen directive for the proxy server
Edit the configuration fileJBOSS_EWS_DIST/httpd/conf.d/JBoss_HTTP.conf
and add the following:Listen IP_ADDRESS:PORT_NUMBER
Where IP_ADDRESS is the IP address of a server network interface to communicate with the worker nodes, and PORT_NUMBER is the port on that interface to listen on.Note
The port PORT_NUMBER must be open on the server firewall for incoming TCP connections.Example 6.1. Example Listen Directive
Listen 10.33.144.3:6666
Create Virtual Host
Add the following to the fileJBOSS_EWS_DIST/httpd/conf.d/JBoss_HTTP.conf
:<VirtualHost IP_ADDRESS:PORT_NUMBER> <Directory> Order deny,allow Deny from all Allow from 10.33.144. </Directory> KeepAliveTimeout 60 MaxKeepAliveRequests 0 ManagerBalancerName mycluster AdvertiseFrequency 5 </VirtualHost>
Where IP_ADDRESS and PORT_NUMBER are the values from the Listen directive.Optional: Disable Server Advertisement
The presence of theAdvertiseFrequency
directive, which is set to five seconds here, causes the server to periodically send server advertisement messages via UDP multicast.These server advertisement messages contain the IP_ADDRESS and PORT_NUMBER specified in the VirtualHost definition. Worker nodes that are configured to respond to server advertisements use this information to register themselves with the proxy server.To disable server advertisement, add the following directive to theVirtualHost
definition:ServerAdvertise Off
If server advertisements are disabled, or UDP multicast is not available on the network between the proxy server and the worker nodes, you must configure worker nodes with a static list of proxy servers. Refer to Section 9.1, “Static Proxy Configuration” for directions.Restart the JBoss Enterprise Web Server Apache service
Refer to the JBoss Enterprise Web Server documentation for detailed directions.