ActiveMQ: 搭建Broker集群(cluster)

上一篇介绍了基于Networks of Borkers的2节点HA方案，这一篇继续来折腾Networks of Brokers，当应用规模日渐增长时，2节点的broker可能仍然抗不住访问压力，这时候就需要多加一些broker，弄一个更大规模的Broker集群，但是怎么合理设置broker之间的网络桥接，却是有讲究的，先来看一种不太好的设计：

<beans
xmlns="http://www.springframework.org/schema/beans"
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.xsd http://activemq.apache.org/schema/core http://activemq.apache.org/schema/core/activemq-core.xsd">
<bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations">
<value>file:${activemq.conf}/credentials.properties</value>
</property>
</bean>

<broker xmlns="http://activemq.apache.org/schema/core" brokerName="broker1">
<persistenceAdapter>
<kahaDB directory="${activemq.data}/kahadb"/>
</persistenceAdapter>
<transportConnectors>
<transportConnector name="openwire"
uri="tcp://0.0.0.0:61616?maximumConnections=1000&wireFormat.maxFrameSize=104857600"/>
</transportConnectors>
</broker>

<import resource="jetty.xml"/>
</beans>

<beans
xmlns="http://www.springframework.org/schema/beans"
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.xsd http://activemq.apache.org/schema/core http://activemq.apache.org/schema/core/activemq-core.xsd">
<bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations">
<value>file:${activemq.conf}/credentials.properties</value>
</property>
</bean>

<broker xmlns="http://activemq.apache.org/schema/core" brokerName="broker-hub1">
<networkConnectors>
<networkConnector uri="static:(tcp://127.0.0.1:61656,tcp://127.0.0.1:61616,tcp://127.0.0.1:61626,tcp://127.0.0.1:61636)" duplex="true"/>
</networkConnectors>
<persistenceAdapter>
<kahaDB directory="${activemq.data}/kahadb"/>
</persistenceAdapter>
<transportConnectors>
<transportConnector name="openwire"
uri="tcp://0.0.0.0:61646?maximumConnections=1000&wireFormat.maxFrameSize=104857600"/>
</transportConnectors>
</broker>

<import resource="jetty.xml"/>
</beans>

<beans
xmlns="http://www.springframework.org/schema/beans"
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.xsd http://activemq.apache.org/schema/core http://activemq.apache.org/schema/core/activemq-core.xsd">
<bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations">
<value>file:${activemq.conf}/credentials.properties</value>
</property>
</bean>

<broker xmlns="http://activemq.apache.org/schema/core" brokerName="broker-hub2">
<networkConnectors>
<networkConnector uri="static:(tcp://127.0.0.1:61616,tcp://127.0.0.1:61626,tcp://127.0.0.1:61636)" duplex="true"/>
</networkConnectors>
<persistenceAdapter>
<kahaDB directory="${activemq.data}/kahadb"/>
</persistenceAdapter>
<transportConnectors>
<transportConnector name="openwire"
uri="tcp://0.0.0.0:61656?maximumConnections=1000&wireFormat.maxFrameSize=104857600"/>
</transportConnectors>
</broker>

<import resource="jetty.xml"/>
</beans>

<bean id="jmsFactory" class="org.apache.activemq.pool.PooledConnectionFactory" destroy-method="stop">
<property name="connectionFactory">
<bean class="org.apache.activemq.ActiveMQConnectionFactory">
<!--broker服务的地址-->
<property name="brokerURL" value="failover:(tcp://localhost:61646,tcp://localhost:61656)"/>
<!--默认值为1000,如果不需要这么大,可以调小-->
<property name="maxThreadPoolSize" value="100"/>
<!--<property name="userName" value="system"/>-->
<!--<property name="password" value="manager"/>-->
</bean>
</property>
</bean>

<bean id="jmsFactory" class="org.apache.activemq.pool.PooledConnectionFactory" destroy-method="stop">
<property name="connectionFactory">
<bean class="org.apache.activemq.ActiveMQConnectionFactory">
<!--broker服务的地址-->
<property name="brokerURL" value="failover:(tcp://localhost:61616,tcp://localhost:61626,tcp://localhost:61636)"/>
<!--默认值为1000,如果不需要这么大,可以调小-->
<property name="maxThreadPoolSize" value="100"/>
<!--<property name="userName" value="system"/>-->
<!--<property name="password" value="manager"/>-->
</bean>
</property>
</bean>

参考文章：

http://www.jakubkorab.net/2011/11/understanding-activemq-broker-networks.html

http://activemq.apache.org/networks-of-brokers.html