一、简介

Master-Slave集群:

由至少3个节点组成,一个Master节点,其他为Slave节点。只有Master节点对外提供服务,Slave节点处于等待状态。当主节点宕机后,从节点会推举出一个节点出来成为新的Master节点,继续提供服务。

优点是可以解决多服务热备的高可用问题,缺点是无法解决负载均衡和分布式的问题。

 

Broker Cluster集群:

Broker-Cluster部署方式中,各个broker通过网络互相连接,并共享queue。当broker-A上面指定的queue-A中接收到一个message处于pending状态,而此时没有consumer连接broker-A时。如果cluster中的broker-B上面有一个consumer在消费queue-A的消息,那么broker-B会先通过内部网络获取到broker-A上面的message,并通知自己的consumer来消费。

优点是可以解决负载均衡和分布式的问题。但不支持高可用。

 

所以,最完美的解决方案是将两者结合起来。

 

二、准备工作

1、集群规划:

Broker-a



集群成员

端口


openwire

amqp

stomp

mqtt

ws

Admin Port


192.168.2.86
192.168.2.87
192.168.2.88

61619

5675

61643

1886

61644

8191


 

Broker-b



集群成员

端口


openwire

amqp

stomp

mqtt

ws

Admin Port


192.168.2.86
192.168.2.87
192.168.2.88

61719

6675

61743

2886

61744

8291



 

 

2、下载MQ安装包:

http://archive.apache.org/dist/activemq/5.14.4/apache-activemq-5.14.4-bin.tar.gz

 

3、安装JDK

yum –y install java-1.7.0-openjdk*

 

 

三、集群安装

3.1、配置Master-Slave

192.168.2.86上操作

 

解压安装包

tar –zxf apache-activemq-5.14.4-bin.tar.gz

mv apache-activemq-5.14.4 activemq-cluster1      #broker-a集群

cp –r activemq-cluster1 activemq-cluster2              #broker-b集群

 

Master-Slave基于Zookeeper

 

修改activemq-cluster1activemq.xml文件

 

vi activemq-cluster1/conf/activemq.xml

broker-a的配置:

<brokerxmlns="http://activemq.apache.org/schema/core"brokerName="broker-a" schedulerSupport="true"dataDirectory="${activemq.data}">

 

 <persistenceAdapter>

   <replicatedLevelDB

     directory="${activemq.data}/leveldb"

     replicas="3"

     bind="tcp://0.0.0.0:0"

     zkAddress="192.168.2.93:2281,192.168.2.93:2381,192.168.2.93:2481"

     zkPassword=""

     hostname="192.168.2.86"

     sync="local_disk"

     zkPath="/activemq/leveldb-stores"

     />

    </persistenceAdapter>

 

    <transportConnectors>

    <!-- DOS protection, limit concurrent connections to 1000 and framesize to 100MB -->

      <transportConnector name="openwire" uri="tcp://0.0.0.0:61619?maximumConnections=1000&amp;wireFormat.maxFrameSize=104857600"/>

      <transportConnector name="amqp"uri="amqp://0.0.0.0:5675?maximumConnections=1000&amp;wireFormat.maxFrameSize=104857600"/>

      <transportConnector name="stomp" uri="stomp://0.0.0.0:61643?maximumConnections=1000&amp;wireFormat.maxFrameSize=104857600"/>

      <transportConnector name="mqtt"uri="mqtt://0.0.0.0:1886?maximumConnections=1000&amp;wireFormat.maxFrameSize=104857600"/>

      <transportConnector name="ws"uri="ws://0.0.0.0:61644?maximumConnections=1000&amp;wireFormat.maxFrameSize=104857600"/>

     </transportConnectors>

 

 

修改activemq-cluster2activemq.xml文件

 

vi activemq-cluster2/conf/activemq.xml

broker-b的配置:

<brokerxmlns="http://activemq.apache.org/schema/core"brokerName="broker-b" schedulerSupport="true"dataDirectory="${activemq.data}">


 <persistenceAdapter>

   <replicatedLevelDB

     directory="${activemq.data}/leveldb"

     replicas="3"

     bind="tcp://0.0.0.0:0"

     zkAddress="192.168.2.93:2281,192.168.2.93:2381,192.168.2.93:2481"

     zkPassword=""

     hostname="192.168.2.86"

     sync="local_disk"

     zkPath="/activemq/leveldb-stores2"

     />

    </persistenceAdapter>

 

    <transportConnectors>

    <!-- DOS protection, limit concurrent connections to 1000 and framesize to 100MB -->

      <transportConnector name="openwire"uri="tcp://0.0.0.0:61719?maximumConnections=1000&amp;wireFormat.maxFrameSize=104857600"/>

      <transportConnector name="amqp"uri="amqp://0.0.0.0:6675?maximumConnections=1000&amp;wireFormat.maxFrameSize=104857600"/>

      <transportConnector name="stomp"uri="stomp://0.0.0.0:61743?maximumConnections=1000&amp;wireFormat.maxFrameSize=104857600"/>

      <transportConnectorname="mqtt"uri="mqtt://0.0.0.0:2886?maximumConnections=1000&amp;wireFormat.maxFrameSize=104857600"/>

      <transportConnector name="ws"uri="ws://0.0.0.0:61744?maximumConnections=1000&amp;wireFormat.maxFrameSize=104857600"/>

      </transportConnectors>

 

brokerName一致才会认为是同一个Master-Slavecluster,且至少有3个才会成功,否则无法选主,导致没有broker可以提供服务。

 

3.2、配置Broker Cluster

broker-a配置文件加入以下内容:

   <networkConnectors>

     <networkConnectoruri="masterslave:(tcp://192.168.2.86:61719,tcp://192.168.2.87:61719,tcp://192.168.2.88:61719)"/>

     </networkConnectors>


broker-b配置文件加入以下内容:

   <networkConnectors>

     <networkConnectoruri="masterslave:(tcp://192.168.2.86:61619,tcp://192.168.2.87:61619,tcp://192.168.2.88:61619)"/>

      </networkConnectors>

 

 

然后把activemq-cluster1activemq-cluster2目录分别拷贝到192.168.2.87,192.168.2.88

scp –r activemq-cluster1/ 192.168.2.87:~/

scp –r activemq-cluster1/ 192.168.2.88:~/

scp –r activemq-cluster2/ 192.168.2.87:~/

scp –r activemq-cluster2/ 192.168.2.88:~/

 

3.3、启动集群

启动broker-a 3个节点)和 broker-b3个节点)

每台服务器执行以下命令:

activemq-cluster1/bin/activemq start

activemq-cluster2/bin/activemq start

 

 

查看日志可以看到2broker直接建立链接的log

Broker-a

INFO | Successfully connected to tcp://192.168.2.87:61719

INFO | Network connection between vm://broker-a#0 andtcp://192.168.2.87:61719 (broker-b) has been established.


ActiveMQ集群Master-Slave + Broker Cluster模式_解决方案

Broker-b

Network connection between vm://broker-b#6and tcp://192.168.2.88:61619 (broker-a) has been established. |


ActiveMQ集群Master-Slave + Broker Cluster模式_解决方案_02