rocketmq的安装-双master

多Master模式：

一个集群无Slave,全是Master,例如2个Master或者3个Master

优点：配置简单，单个Master宕机或重启维护对应用无影响，在磁盘配置为RAID10时，即使机器宕机不可恢复情况下，由于RAID10非常可靠，消息也不丢失（异步刷盘会丢失少量信息，同步刷盘一条也不会丢），性能最高。

缺点:  单台机器宕机期间，这台机器上未被消费的消息在机器恢复之前不可订阅，消息实时性会受到影响。

如果业务不涉及到钱的话，完全可以使用多Master模式。

RocketMQ部署(双Master方式)

1.1 服务器环境

序号	IP	用户名	角色	模式
1	192.168.50.112	root	nameServer1,brokerServer1	Master1
2	192.168.50.113	root	nameServer2,brokerServer2	Master2

1.2  Hosts 添加信息

IP	NAME
192.168.50.112	rocketmq-nameserver1
192.168.50.112	rocketmq-master1
192.168.50.113	rocketmq-nameserver2
192.168.50.113	rocketmq-master2

# vi /etc/hosts

1.3  上传解压[两台服务器]

# 上传alibaba-rocketmq-3.2.6.tar.gz文件至/usr/local
# tar -zxvf alibaba-rocketmq-3.2.6.tar.gz -C /usr/local
# mv alibaba-rocketmq alibaba-rocketmq-3.2.6
# ln -s alibaba-rocketmq-3.2.6 rocketmq
ll /usr/local

1.4 创建存储路径【两台 机器】

# mkdir /usr/local/rocketmq/store
# mkdir /usr/local/rocketmq/store/commitlog
# mkdir /usr/local/rocketmq/store/consumequeue
# mkdir /usr/local/rocketmq/store/index

1.5 RocketMQ配文件

# vim /usr/local/rocketmq/conf/2m-noslave/broker-a.properties
# vim /usr/local/rocketmq/conf/2m-noslave/broker-b.properties

配置文件如下：

#所属集群名字
brokerClusterName=rocketmq-cluster
#broker名字，注意此处不同的配置文件填写的不一样
brokerName=broker-a|broker-b
#0 表示 Master，>0 表示 Slave
brokerId=0
#nameServer地址，分号分割
namesrvAddr= rocketmq-nameserver1 :9876; rocketmq-nameserver2 :9876
# 在发送消息时，自动创建服务器不存在的topic，默认创建的队列数
defaultTopicQueueNums=4
# 是否允许 Broker 自动创建Topic，建议线下开启，线上关闭
autoCreateTopicEnable=true
# 是否允许 Broker 自动创建订阅组，建议线下开启，线上关闭
autoCreateSubscriptionGroup=true
# Broker 对外服务的监听端口
listenPort=10911
# 删除文件时间点，默认凌晨 4点
deleteWhen=04
#文件保留时间，默认 48 小时
fileReservedTime=120
#commitLog每个文件的大小默认1G
mapedFileSizeCommitLog=1073741824
#ConsumeQueue每个文件默认存30W条，根据业务情况调整
mapedFileSizeConsumeQueue=300000
#destroyMapedFileIntervalForcibly=120000
#redeleteHangedFileInterval=120000
#检测物理文件磁盘空间
diskMaxUsedSpaceRatio=88
#存储路径
storePathRootDir= /usr/local/rocketmq/store
#commitLog 存储路径
storePathCommitLog= /usr/local/rocketmq/store /commitlog
#消费队列存储路径存储路径
storePathConsumeQueue=/usr/local/rocketmq/store/consumequeue
#消息索引存储路径
storePathIndex=/usr/local/rocketmq/store/index
#checkpoint 文件存储路径
storeCheckpoint=/usr/local/rocketmq/store/checkpoint
#abort 文件存储路径
abortFile=/usr/local/rocketmq/store/abort
#限制的消息大小
maxMessageSize=65536
#flushCommitLogLeastPages=4
#flushConsumeQueueLeastPages=2
#flushCommitLogThoroughInterval=10000
#flushConsumeQueueThoroughInterval=60000
#Broker 的角色
#- ASYNC_MASTER 异步复制Master
#- SYNC_MASTER 同步双写Master
#- SLAVE
brokerRole=ASYNC_MASTER
#刷盘方式
#- ASYNC_FLUSH 异步刷盘
#- SYNC_FLUSH 同步刷盘
flushDiskType=ASYNC_FLUSH
#checkTransactionMessageEnable=false
#发消息线程池数量
#sendMessageThreadPoolNums=128
#拉消息线程池数量
#pullMessageThreadPoolNums=128

1.6 修改日志配置文件【两台机器】

# mkdir -p /usr/local/rocketmq/logs
# cd /usr/local/rocketmq/conf && sed -i 's#${user.home}#/usr/local/rocketmq#g'
*.xml

1.7 修改启动脚本参数【两台机器】

# vim /usr/local/rocketmq/bin/runbroker.sh

#============================================================
==================
# 开发环境JVM Configuration
#============================================================
==================
JAVA_OPT="${JAVA_OPT} -server -Xms1g -Xmx1g -Xmn512m -
XX:PermSize=128m -XX:MaxPermSize=320m"

# vim /usr/local/rocketmq/bin/runserver.sh

JAVA_OPT="${JAVA_OPT} -server -Xms1g -Xmx1g -Xmn512m -
XX:PermSize=128m -XX:MaxPermSize=320m"

1.8  启动NameServer[两台 机器]

# cd /usr/local/rocketmq/bin
# nohup sh mqnamesrv &

1.9 启动BrokerServer A [192.168.50.112]

# cd /usr/local/rocketmq/bin
# nohup sh mqbroker -n localhost:9876 autoCreateTopicEnable=true &
# netstat -ntlp
# jps
# tail -f -n 500 /usr/local/rocketmq/logs/rocketmqlogs/broker.log
# tail -f -n 500 /usr/local/rocketmq/logs/rocketmqlogs/namesrv.log

1.10  启动BrokerServer B [192.168.50.113]

# cd /usr/local/rocketmq/bin
# nohup sh mqbroker -n localhost:9876 autoCreateTopicEnable=true &
# netstat -ntlp
# jps
# tail -f -n 500 /usr/local/rocketmq/logs/rocketmqlogs/broker.log
# tail -f -n 500 /usr/local/rocketmq/logs/rocketmqlogs/namesrv.log

1.11 RocketMQ Console

1.12  数据清理

# cd /usr/local/rocketmq/bin
# sh mqshutdown broker
# sh mqshutdown namesrv
# --等待停止
# rm -rf /usr/local/rocketmq/store
# mkdir /usr/local/rocketmq/store
# mkdir /usr/local/rocketmq/store/commitlog
# mkdir /usr/local/rocketmq/store/consumequeue
# mkdir /usr/local/rocketmq/store/index
# --按照上面步骤重启NameServer与BrokerServer