Re: Tomcat does not start for slave activeMQ Broker in jdbc master slave cluster environment

[Dejan Bosanac <de...@nighttale.net>]

Hi,

 I'm not sure about your setup, but you cannot have a slave broker in an
active Tomcat instance. In case you're going to use your second Tomcat
instance as a "slave" as well, then you have it since it will start when
slave ActiveMQ obtain the lock. In case both Tomcat instances need to use
the same broker, then you'll need a standalone ActiveMQ installation. The
other option is that every Tomcat use their own broker, which can be then
connected together in the network.

Cheers
--
Dejan Bosanac - http://twitter.com/dejanb

Open Source Integration - http://fusesource.com/
ActiveMQ in Action - http://www.manning.com/snyder/
Blog - http://www.nighttale.net


On Thu, Feb 18, 2010 at 12:18 PM, capriipriya
<pr...@ge.com>wrote:

>
> HI ,
>
> I am using activemq within tomcat and i am deploying an application in a
> clustered mode using jdbc master slave clustering.
> I have two nodes -one as a master and one as a slave.
> I have the same configuration in both the nodes.
> The activemq.xml configuration being used is below .
>
> <beans
>  xmlns="http://www.springframework.org/schema/beans"
>  xmlns:amq="http://activemq.apache.org/schema/core"
>  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
>  xsi:schemaLocation="http://www.springframework.org/schema/beans
>
> http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
>  http://activemq.apache.org/schema/core
> http://activemq.apache.org/schema/core/activemq-core-5.2.0.xsd
>  http://activemq.apache.org/camel/schema/spring
> http://activemq.apache.org/camel/schema/spring/camel-spring.xsd">
>
> <amq:broker brokerName="3.204.21.219" shutdownOnMasterFailure="false">
>  <amq:persistenceAdapter>
>            <amq:jdbcPersistenceAdapter dataSource="#oracle-ds"/>
>   </amq:persistenceAdapter>
>
>
>
>    <amq:transportConnectors>
>          <amq:transportConnector uri="tcp://3.204.21.219:61616"/>
>   </amq:transportConnectors>
> </amq:broker>
>
>
>  <bean id="oracle-ds" class="org.apache.commons.dbcp.BasicDataSource"
> destroy-method="close">
>    <property name="driverClassName"
> value="oracle.jdbc.driver.OracleDriver"/>
>    <property name="url" value="jdbc:oracle:thin:@3.204.35.53:1521:orcl"/>
>    <property name="username" value="system"/>
>    <property name="password" value="test123"/>
>    <property name="poolPreparedStatements" value="true"/>
>  </bean>
> </beans>
>
> I have spring configuration for starting the broker as
>
> <bean id="broker" class="org.apache.activemq.xbean.BrokerFactoryBean">
>                <property name="config" value="classpath:activemq.xml" />
>                <property name="start" value="true" />
> </bean>.
>
> The issue is that the first node's tomcat starts up properly and becomes
> the
> master by attaining a lock on the database.When the second node's tomcat
> starts ,the broker keeps trying to attain a lock on the database and the
> tomcat does not start because of this.I can run this properly in a
> standalone activemq deployment .But the requirement is to use an embedded
> activemq in tomcat.
>
> What can i do to overcome this issue ?
>
>
> --
> View this message in context:
> http://old.nabble.com/Tomcat-does-not-start-for-slave-activeMQ-Broker-in-jdbc-master-slave-cluster-environment-tp27637368p27637368.html
> Sent from the ActiveMQ - User mailing list archive at Nabble.com.
>
>

Re: Tomcat does not start for slave activeMQ Broker in jdbc master slave cluster environment

[Albrecht Militzer <am...@web.de>]

Hello Dejan,

>  but you cannot have a slave broker in an active Tomcat instance.

thanks. That is what was troubling me. An identical config with standalone
brokers worked. 

Is there any specific reason why embedded brokers and master/slave are not
orthogonal? Did I miss this somewhere in the docs?

Bye

Albrecht
-- 
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