master-slave
<networkConnectors> ?<networkConnector uri="masterslave:(tcp://host1:61616,tcp://host2:61616,tcp://..)"/></networkConnectors>- uri列表中对应的顺序就是MASTER,SLAVE1,SLAVE2...SLAVE;
- master-slave的作用就是brokers之间的主从，同一时刻只能连接一个broker。通常先连接master，如果master连接不上，则连接slave；
- brokers之间的消息同步机制是通过<persistenceAdapter>共享的存储方式来共享数据的，如：jdbc/kahaDB/replicaLevelDB(zookeeper)。同时，brokers之间也是通过获取数据存储的访问权来获取broker的主导权(即哪个broker激活)。
- zookeeper做masterslave时，brokers的名字必须一致，否则zookeeper会认为不符合2n+1的规则。
- masterslave这种配置既可以在activeMQ.xml中配置，也可以在client端使用。通常建议在client使用。虽然master-slave可以提高可用性，但是负载均衡的功能减弱，并且很多时候会浪费slave broker服务器。
broker static discover
<networkConnectors> ?<networkConnector uri="static:(tcp://host1:61616,tcp://host2:61617,tcp://..)"/></networkConnectors>表示当前local broker与remote broker(61616/61617)建立的单向网络连接。即local broker可以将消息传递给remote broker，但反过来就不行。duplex="true" 属性配置可以开启双向通信。
broker multicast ?discover
<networkConnectors> ??<networkConnector uri="multicast://default"/></networkConnectors><transportConnector uri="tcp://localhost:0" discoveryUri="multicast://default"/>组播发现会自动发现同网络中的broker并进行连接通信。注意：必须是同网络中。
在实际的配置很少这样配置，因为无法保证哪些brokers建立了连接。对于master-slave配置也不是很好。
dynamicallyIncludedDestinations
<dynamicallyIncludedDestinations> ????<queue physicalName="include.test.foo"/> ????<topic physicalName="include.test.bar"/></dynamicallyIncludedDestinations>当networkConnector中连接的broker有customers时，那么对应的destinations才会传递到对应的broker。否则，不传递。这中方式对于point-to-point的方式就比较合适。
staticallyIncludedDestinations
<staticallyIncludedDestinations> ????<queue physicalName="always.include.queue"/> ????<topic physicalName="always.include.topic"/></staticallyIncludedDestinations>不管networkConnector中连接的broker有无customers,都会讲消息发送到每个broker去。这种方式比较适合topic的消息方式。
excludedDestinations
<excludedDestinations> ????<queue physicalName="exclude.test.foo"/> ????<topic physicalName="exclude.test.bar"/></excludedDestinations>networkConnector中指定某些detination不会发送到remote brokers.
networkConnector中uri的参数
uri="static:(tcp://host1:61616,tcp://host2:61616)?maxReconnectDelay=5000&useExponentialBackOff=false"initialReconnectDelay:重连的时间间隔。
maxReconnectDelay:最大重连时间。即initialReconnectDelay次数
useExponentialBackOff:一次连接失败，后面的重连时间是否依次递增。
backOffMultiplier:当useExponentialBackOff=true,重连时间的间隔的倍数，即initialReconnectDelaybackOffMultiplier
networkConnector属性配置
name：连接名称，多个时必须唯一。
dynamicOnly：
decreaseNetworkConsumerPriority：
networkTTL：
messageTTL：
consumerTTL：
conduitSubscriptions：管道订阅。即一个broker有多个customers，也只会认为是一个customer.
excludedDestinations：
dynamicallyIncludedDestinations：
useVirtualDestSubs：
staticallyIncludedDestinations：
duplex：是否开启双工通信
prefetchSize：
suppressDuplicateQueueSubscriptions：
bridgeTempDestinations：
alwaysSyncSend：
staticBridge：静态连接桥。与staticallyIncludedDestinations联合使用
userName：networkConnector连接用户名
password：networkConnector连接密码
二、集群实例
broker-master
<networkConnectors> ???<networkConnector name="connector_master_slave" uri="static:(tcp://localhost:61618,tcp://localhost:61619)" ???????????????????????????userName="admin" password="admin123"/> ??<networkConnector name="connector_brokers" uri="static:(tcp://localhost:61620,tcp://localhost:61621)" ????????????????????????userName="admin" password="admin123"> ????<dynamicallyIncludedDestinations> ?????????<queue physicalName=">"/> ????</dynamicallyIncludedDestinations> ????<staticallyIncludedDestinations> ??????????<topic physicalName=">"/> ????</staticallyIncludedDestinations> ??</networkConnector></networkConnectors><transportConnector name="openwire" uri="tcp://0.0.0.0:61617?maximumConnections=1000&wireFormat.maxFrameSize=104857600"/>broker-slave01
<networkConnectors> ???<networkConnector name="connector_master_slave" uri="static:(tcp://localhost:61617,tcp://localhost:61619)" ?????????????userName="admin" password="admin123"/> ???<networkConnector name="connector_brokers" uri="static:(tcp://localhost:61620,tcp://localhost:61621)" ???????????????????????????userName="admin" password="admin123"> ??????<dynamicallyIncludedDestinations> ????????????<queue physicalName=">"/> ??????</dynamicallyIncludedDestinations> ??????<staticallyIncludedDestinations> ????????????<topic physicalName=">"/> ??????</staticallyIncludedDestinations> ???</networkConnector></networkConnectors><transportConnector name="openwire" uri="tcp://0.0.0.0:61618?maximumConnections=1000&wireFormat.maxFrameSize=104857600"/>broker-slave02
<networkConnectors> ??<networkConnector name="connector_master_slave" ???????????????????????????uri="static:(tcp://localhost:61617,tcp://localhost:61618)" userName="admin" password="admin123"/> ??<networkConnector name="connector_brokers" uri="static:(tcp://localhost:61620,tcp://localhost:61621)" ?????????????????????????userName="admin" password="admin123"> ?????????<dynamicallyIncludedDestinations> ??????????????????<queue physicalName=">"/> ?????????</dynamicallyIncludedDestinations> ?????????<staticallyIncludedDestinations> ??????????????????<topic physicalName=">"/> ?????????</staticallyIncludedDestinations> ????</networkConnector></networkConnectors>broker-cluster01
<networkConnectors> ????<networkConnector uri="static:(tcp://localhost:61621)" duplex="false" name="connector_broker_normal" ???????????????????????????userName="admin" password="admin123"> ????????<dynamicallyIncludedDestinations> ??????????????????<queue physicalName=">" /> ??????????????????<topic physicalName=">" /> ????????</dynamicallyIncludedDestinations> ????</networkConnector></networkConnectors><transportConnector name="openwire" uri="tcp://0.0.0.0:61620?maximumConnections=1000&wireFormat.maxFrameSize=104857600"/>broker-cluster02
<networkConnectors> ????<networkConnector uri="static:(tcp://localhost:61620)" duplex="false" name="connector_broker_normal" ??????????????????????????userName="admin" password="admin123"> ????????<dynamicallyIncludedDestinations> ????????????????<queue physicalName=">" /> ????????????????<topic physicalName=">" /> ????????</dynamicallyIncludedDestinations> ????</networkConnector></networkConnectors><transportConnector name="openwire"uri="tcp://0.0.0.0:61621?maximumConnections=1000&wireFormat.maxFrameSize=104857600"/>brokers的安全配置
<bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> ????<property name="locations"> ????????<value>file:${activemq.conf}/credentials.properties</value> ???</property></bean><plugins> ???<simpleAuthenticationPlugin> ???????<users> ?????????<authenticationUser username="${activemq.username}" password="${activemq.password}" ?groups="admins"/> ???????</users> ???</simpleAuthenticationPlugin> ????????<authorizationPlugin> ??????????<map> ???????????<authorizationMap> ????????????<authorizationEntries> ????????????<authorizationEntry queue=">" read="admins" write="admins" admin="admins" /> ????????????<authorizationEntry topic=">" read="admins" write="admins" admin="admins"/> ???????????</authorizationEntries> ???????????<tempDestinationAuthorizationEntry> ????????????<tempDestinationAuthorizationEntry read="admins" write="admins" admin="admins"/> ???????????</tempDestinationAuthorizationEntry> ??????????</authorizationMap> ??????????</map> ???</authorizationPlugin></plugins>参考文档：
http://activemq.apache.org/networks-of-brokers.html
http://shift-alt-ctrl.iteye.com/blog/2070531
https://www.cnblogs.com/shihaiming/p/6018916.html
ActiveMQ之brokers network集群
原文地址：http://blog.51cto.com/881206524/2129863