1，rocketmq 的原理与安装教程

参考文档

http://blog.csdn.net/a19881029/article/details/34446629

https://github.com/alibaba/RocketMQ

http://sofar.blog.51cto.com/353572/1540874

安装包和官方的配置说明：

http://www.docin.com/p-985451416.html

原理图

角色说明

nameserver: 类似zookeeper 是个服务管理中心，用来记录 broker的分布情况，当前状态等等

broker：实际意义上的消息队列，有master，slave 两种状态

producer：消息的生产者

consumer：消息的消费者

1、JDK安装

http://download.oracle.com/otn-pub/java/jdk/7u65-b17/jdk-7u65-linux-x64.tar.gz

# tar xvzf jdk-7u65-linux-x64.gz -C /usr/local

# rm -f jdk-7u65-linux-x64.gz

# cd /usr/local && ln -s jdk1.7.0_65 jdk

# cd /usr/local/bin && ln -s /usr/local/jdk/bin/java

2、RocketMQ安装

https://github.com/alibaba/RocketMQ/releases

# tar xvzf alibaba-rocketmq-3.1.7.tar.gz -C /usr/local

# mv alibaba-rocketmq alibaba-rocketmq-3.1.7

# ln -s alibaba-rocketmq-3.1.7 rocketmq

# rm alibaba-rocketmq-3.1.7.tar.gz

# ll /usr/local

3、环境变量设置

# vim /etc/profile

export PATH=$PATH:/usr/local/bin

export JAVA_HOME=/usr/local/jdk

export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar

export PATH=$PATH:$JAVA_HOME/bin

export ROCKETMQ_HOME=/usr/local/rocketmq

export PATH=$PATH::$ROCKETMQ_HOME/bin

安装包解压后的目录结构

2m-2s-async 两主，两从，同步复制数据的配置

2m-2s-sync 两主，两从，异步复制数据的配置

2m-noslave 两主,无从的配置

启动nameserver，默认端口9876

[hadoop@hadoop bin]$ nohup sh mqnamesrv &
[1] 17676
[hadoop@hadoop bin]$ nohup: appending output to “nohup.out”

[hadoop@hadoop bin]$ cat nohup.out 
The Name Server boot success.
[hadoop@hadoop bin]$ jps
17682 NamesrvStartup
17800 Jps

启动 master 默认端口号是 10911[hadoop@hadoop bin]$ nohup sh mqbroker -n "192.168.58.163:9876" -c ../conf/2m-2s-async/broker-a.properties &

[hadoop@hadoop bin]$ nohup sh mqbroker -n "192.168.58.163:9876" -c ../conf/2m-2s-async/broker-a.properties &
[2] 25493
[hadoop@hadoop bin]$ nohup: appending output to “nohup.out”

[hadoop@hadoop bin]$ cat nohup.out 
load config properties file OK, ../conf/2m-2s-async/broker-a.properties
The broker[broker-a, 192.168.58.163:10911] boot success. and name server is 192.168.58.163:9876
[hadoop@hadoop bin]$ jps
25500 BrokerStartup
25545 Jps
17682 NamesrvStartup

配置说明

brokerClusterName=AdpMqCluster // broker归属的集群名

brokerName=broker-a 　 // broker的名字

brokerId=0 　　　　　　　　　　　　　// 0 代表master >0 表示slave, 一个master 可以挂多个slave， master 和 slave 通过 brokerName 来配对

namesrvAddr=mqnameserver1:9876;192.168.1.252:9876 //nameserver 对应的IP和端口号

defaultTopicQueueNums=4 //

autoCreateTopicEnable=true //是否允许broker自动创建Topic

autoCreateSubscriptionGroup=true //是否允许broker自动创建订阅组

listenPort=10911 //监听的端口号

deleteWhen=04 //删除文件时间点，默认凌晨4点

fileReservedTime=120 //文件保留时间，单位小时

mapedFileSizeCommitLog=1073741824

mapedFileSizeConsumeQueue=50000000

destroyMapedFileIntervalForcibly=120000

redeleteHangedFileInterval=120000

diskMaxUsedSpaceRatio=88

storePathRootDir=/data/rocketmq/store

storePathCommitLog=/data/rocketmq/store/commitlog //commitlog 的存储路径

storePathIndex=/data/rocketmq/store/indexlog //消息索引的存储路径

abortFile=/data/rocketmq/store/abortlog //abort文件的储存路径

maxMessageSize=65536

flushCommitLogLeastPages=4

flushConsumeQueueLeastPages=2

flushCommitLogThoroughInterval=10000

flushConsumeQueueThoroughInterval=60000

brokerRole=ASYNC_MASTER //broker的角色, Master, SLAVE, ASYNC_MASTER, SYNC_MASTER

flushDiskType=ASYNC_FLUSH //数据写盘方式，异步写盘， SYNC_FLUSH ：同步写盘

checkTransactionMessageEnable=false

sendMessageThreadPoolNums=128

pullMessageThreadPoolNums=128