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Red Hat A-MQ - Create cluster of brokers support AMQP in Fabric


In this tutorial, I am going to show you how to create a cluster of message broker using the built-in management platform Fabric. This make life much much easier to either config and manage brokers.

Please obtain a copy of JBoss A-MQ by going to
http://www.jboss.org/products/amq.html
and download JBoss A-MQ from Red Hat.

Here are the summary steps to create.

1. Unzip to install
2. Create User
3. Startup A-MQ server
4. Create Fabric
5. Create A-MQ broker profile
6. Create the container
7. Create a new version and apply AMQP Setting
8. Container version rolling upgrade
9. Test it.



To install simply unzip the jboss-a-mq-version.redhat-x.zip file to a directory.

Before starting up JBoss A-MQ, we need to set a default user.
Open up  $A-MQ_INSTALLATION_PATH/etc/users.properties 
Remove the # before admin=admin,admin


or you can add your own prefer user id,  password and role.
(USER=PASSWORD,ROLE1,ROLE2,...)


Go to $A-MQ_INSTALLATION_PATH/bin , startup A-MQ by executing

Unix/Linux,
                    ./amq

Windows, 
                     amq.bat



Because we are going to manage brokers from Fabric,
create the fabric with this command

fabric:create --wait-for-provisioning

There are two different ways to create MQ broker, we can create one using Hawtio GUI or by command. I am going to show you the command part first in the tutorial.

type in

mq-create --group demo mybroker

This creates a A-MQ profile called mybroker, that belongs to a group called demo

Type profile-list or profile-list | grep mybroker to see if the profile has been successfully created.

Add broker settings to mq-broker-demo.mybroker profile by typing

profile-edit --resource broker.xml mq-broker-demo.mybroker 

and paste the following content into the file, save. 




    
    
        
            
              
    

    

        
            
              
                
                  
                    
                  
                
                
                
              
            
        
 
        
            
        

        
            
        

        
            
        

        
            
                
                    
                
                
                    
                
                
                    
                
            
        
        
        
            
        
    






you should be able to see the new resource added by checking with 

profile-display mq-broker-demo.mybroker 


Now the profile is ready, we are going to create 3 containers (instances) that will run this messaging profile. 

container-create-child --profile mq-broker-demo.mybroker root demoContainer1
container-create-child --profile mq-broker-demo.mybroker root demoContainer2
container-create-child --profile mq-broker-demo.mybroker root demoContainer3




All 3 container should startup automatically, you can check if it correctly install by listing all the containers:

container-list 

Now, you have successfully create a clusters of A-MQ broker with Master-Slave topology. But it still doesn't run AMQP yet. 

I want to show you how to do version upgrades,

Create version 1.1
fabric:version-create 1.1

Add AMQP connector to the 1.1 version of our profile mq-broker-demo.mybroker
profile-edit --resource broker.xml mq-broker-demo.mybroker 1.1

add the amqp connect in the transportConnectors section of xml.
<transportConnector name="amqp" uri="amqp://0.0.0.0:5672"/>
SAVE. 

Last part of setting, we need to upgrade the containers to our updated version 1.1
fabric:container-upgrade 1.1 demoContainer1
container-list 

And do the rest, 
fabric:container-upgrade 1.1 demoContainer2
fabric:container-upgrade 1.1 demoContainer3

Now, testing 

git clone https://github.com/FuseByExample/activemq-amqp-example.git

Goto 
activemq-amqp-example/src/main/resources/jndi.properties change the connectionfactory.myJmsFactory setting to 

amqp://admin:admin@localhost/test?brokerlist='tcp://0.0.0.0:5672




Test  AMQP by running consumer, under activemq-amqp-example/ directory, 

mvn -P consumer

And startup Producer to test 

mvn -P producer

You should see the consumer picking up the message created by the producer. 







Comments

Chisoon Chang said…
Tried this demo, so I can understand and traced what went wrong with your bio-sensor demo. However, I ran into a problem at your slide 7 where profile-display to show the new configuration of mybroker. The mybroker does not have the new PID as org.fusesource.mq.fabric.., I even did a profile-refresh, it still carried the io.fabric.mq.. as that of the original activemq.xml from the jboss-am-q source. I followed your steps twice (profile-delete mybroker and mq-create mybroker again) and came out the same result. Something seems wrong with my local set-up. Suggestion?
Chisoon Chang said…
Although I could not repeat this demo on my local RHEL 6.x box, I have fundamental question about the purpose of setting cluster of brokers. Under what condition or program reqirements, we need to set up such cluster of brokers?

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