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Language:
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Language:
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Red Hat Training
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Chapter 12. Working Examples
12.1. Complete Working Example
Following are a set of example configuration files for a complete working example.
Load Balancer
A proxy server listening on localhost:
LoadModule slotmem_module modules/mod_slotmem.so
LoadModule manager_module modules/mod_manager.so
LoadModule proxy_cluster_module modules/mod_proxy_cluster.so
LoadModule advertise_module modules/mod_advertise.so
Listen 127.0.0.1:6666
<VirtualHost 127.0.0.1:6666>
<Directory />
Order deny,allow
Deny from all
Allow from 127.0.0.1
</Directory>
KeepAliveTimeout 60
MaxKeepAliveRequests 0
ManagerBalancerName mycluster
ServerAdvertise On
AdvertiseFrequency 5
EnableMCPMReceive On
<Location /mod_cluster-manager>
SetHandler mod_cluster-manager
Order deny,allow
Deny from all
Allow from 127.0.0.1
</Location>
</VirtualHost>Worker Configuration for Tomcat
Edit the $CATALINA_HOME/conf/server.xml file and add the following listener element to configure the worker for Tomcat:
<Listener className="org.jboss.modcluster.container.catalina.standalone.ModClusterListener" advertise="true"/>
Example iptables Firewall Rules
Following are a set of example firewall rules using iptables, for a cluster node on the 192.168.1.0/24 subnet.
/sbin/iptables -I INPUT 5 -p udp -d 224.0.1.0/24 -j ACCEPT -m comment --comment "mod_cluster traffic" /sbin/iptables -I INPUT 6 -p udp -d 224.0.0.0/4 -j ACCEPT -m comment --comment "JBoss Cluster traffic" /sbin/iptables -I INPUT 9 -p udp -s 192.168.1.0/24 -j ACCEPT -m comment --comment "cluster subnet for inter-node communication" /sbin/iptables -I INPUT 10 -p tcp -s 192.168.1.0/24 -j ACCEPT -m comment --comment "cluster subnet for inter-node communication" /etc/init.d/iptables save