ActiveMQ Configuration Explained: Master-Slave With Network Of Brokers

Introduction

In my previous posts, I have covered tutorial about ActiveMQ with the following aspects:

• Installation: ActiveMQ 5.10.0 Installation And Configuration
• Configure Master-Slave Cluster for High Availability: http://ggl-consulting.blogspot.com/2015/01/configure-activemq-for-high-available.html
• Montoring ActiveMQ Using jVisualVM: http://ggl-consulting.blogspot.com/2015/01/monitor-activemq-nodes-using-jmx.html
• Monitoring ActiveMQ Using Tomcat: http://ggl-consulting.blogspot.com/2015/01/monitoring-activemq-using-tomcat-web.html

I have explained how master-slave paradigm with shared file system works. In this post, I will explain more advanced topic, namely, Network Of Brokers. I will demonstrate the procedures to setup a network of ActiveMQ brokers with Master-Slave pairs.

Network Topology

As shown in the above figure, I configured two clusters. The WEST cluster contains two ActiveMQ nodes, namely, north and south. These two node forms a master-slave pair. Depending on applications, the nodes number could be 2 or 3. These nodes sharing the same NFS where the kahaDB is located. The same is for the EAST cluster.

Configurations

Directory Layout

The ActiveMQ is installed at:

/opt/app/activemq/apache-activemq-5.10.0

The tomcat is installed at:

/opt/app/activemq/cluster/master-slave/tomcat/apache-tomcat-8.0.17

north and south nodes

/opt/app/amq/NetworkOfBrokers/cluster/north
/opt/app/amq/NetworkOfBrokers/cluster/south

activemq.xml

To setup network of brokers as shown in the introduction, we just need to update the activemq.xml file from west cluster. The file contents is as the following:

 
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From the above configuration, you can see that I have configured two network connections, namely, Queue_Connector and Topic_Connector. Copy this activemq.xml to both north and south nodes, and leave the east cluster as it is as show my my previous blog of pure master-slave clustering.