activemq failover using multiple instances in master slave mode on same linux machine - activemq

Question

I have setup ActiveMQ mulitple instances to achieve failover in master slave mode in windows.
While setting up the same i just created 3 instances under bin folder without changing any port and started all 3 instances one by one. First instance became master and remaining were in slave mode until I stopped master instance.
Now I am trying to achieve the same in Linux environment. First instance starts successfully but when I start second instance in a different window it throws below error:
ERROR | Failed to start Apache ActiveMQ ([instance2, ID:132vm6-57227-1478597606120-0:1], java.io.IOException: Transport Connector could not be registered in JMX: java.io.IOException: Failed to bind to server socket: tcp://0.0.0.0:61616?maximumConnections=1000&wireFormat.maxFrameSize=104857600 due to: java.net.BindException: Address already in use)
INFO | Apache ActiveMQ 5.14.0 (instance2, ID:132vm6-57227-1478597606120-0:1) is shutting down
INFO | Connector openwire stopped
INFO | Connector amqp stopped
INFO | Connector stomp stopped
INFO | Connector mqtt stopped
INFO | Connector ws stopped
INFO | PListStore:[/opt/apache-activemq-5.14.0/bin/instance2/data/instance2/tmp_storage] stopped
INFO | Stopping async queue tasks
INFO | Stopping async topic tasks
INFO | Stopped KahaDB
INFO | Apache ActiveMQ 5.14.0 (instance2, ID:132vm6-57227-1478597606120-0:1) uptime 0.585 seconds
INFO | Apache ActiveMQ 5.14.0 (instance2, ID:132vm6-57227-1478597606120-0:1) is shutdown
INFO | Closing org.apache.activemq.xbean.XBeanBrokerFactory$1#4233871a: startup date [Tue Nov 08 15:03:24 IST 2016]; root of context hierarchy
WARN | Exception thrown from LifecycleProcessor on context close
java.lang.IllegalStateException: LifecycleProcessor not initialized - call 'refresh' before invoking lifecycle methods via the context: org.apache.activemq.xbean.XBeanBrokerFactory$1#4233871a: startup date [Tue Nov 08 15:03:24 IST 2016]; root of context hierarchy
at org.springframework.context.support.AbstractApplicationContext.getLifecycleProcessor(AbstractApplicationContext.java:357)[spring-context-4.1.9.RELEASE.jar:4.1.9.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.doClose(AbstractApplicationContext.java:884)[spring-context-4.1.9.RELEASE.jar:4.1.9.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.close(AbstractApplicationContext.java:843)[spring-context-4.1.9.RELEASE.jar:4.1.9.RELEASE]
at org.apache.activemq.hooks.SpringContextHook.run(SpringContextHook.java:30)[activemq-spring-5.14.0.jar:5.14.0]
at org.apache.activemq.broker.BrokerService.stop(BrokerService.java:875)[activemq-broker-5.14.0.jar:5.14.0]
at org.apache.activemq.xbean.XBeanBrokerService.stop(XBeanBrokerService.java:122)[activemq-spring-5.14.0.jar:5.14.0]
at org.apache.activemq.broker.BrokerService.start(BrokerService.java:629)[activemq-broker-5.14.0.jar:5.14.0]
at org.apache.activemq.xbean.XBeanBrokerService.afterPropertiesSet(XBeanBrokerService.java:73)[activemq-spring-5.14.0.jar:5.14.0]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)[:1.7.0_65]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)[:1.7.0_65]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)[:1.7.0_65]
at java.lang.reflect.Method.invoke(Method.java:606)[:1.7.0_65]
I am using ActiveMQ 5.14 version.
If anybody has encountered a similar issue, kindly provide your inputs.

Answer 1

To get multiple instances of ActiveMQ running on the same machine, you need to change the ports that they try to open. There are (at least) 3 ports that need to be changed:
The transportConnector ports that accept messaging traffic. These are defined in theactivemq.xml file. Typically you only need the openwire one - this is 61616 by default; I usually change this in the other ActiveMQ instances to 61626, 61636 etc. You can usually comment out the others if you don't intend to use them.
The Jetty HTTP port. This is defined in the jetty.xml file. The default is 8161, set the next ones to 8162, 8163 etc.
The JMX port. This one's a bit tricky, as you need to stick a piece of config into the activemq.xml to explicitly define it as follows:
<managementContext>
<managementContext createConnector="true" connectorPort="1099"/>
</managementContext>
You can then change this to 1199, 1299 on the other instances. Hope this helps.