RocketMQ系列：搭建3m-noslave模式的rocketmq集群

利用6台机器搭建一个3分片的broker集群，一共有3个broker实例（3m），采用同步刷屏模式

1.引言

本文主要介绍如何在三台机器上搭建一个3m（无slave节点的）rocketmq的集群。

2.环境准备

机器名	机器IP	机器配置	备注
nameserver1	192.168.11.1	4C4G
nameserver2	192.168.11.2	4C4G
nameserver3	192.168.11.3	4C4G
broker1	192.168.11.4	8C16G
broker2	192.168.11.5	8C16G
broker3	192.168.11.6	8C16G

2.1 配置hostname

这里设置是为了方便管理机器节点，也可以跳过此处。

#nameserver1上执行：
hostnamectl set-hostname nameserver1
#nameserver2上执行：
hostnamectl set-hostname nameserver2
#nameserver3上执行：
hostnamectl set-hostname nameserver3
#broker1上执行：
hostnamectl set-hostname broker1
#broker2上执行：
hostnamectl set-hostname broker2
#broker3上执行：
hostnamectl set-hostname broker3

2.2 设置hosts

在broker1，broker2，broker3分别执行：

cat >>/etc/hosts<<EOF
192.168.11.1 nameserver1
192.168.11.2 nameserver2
192.168.11.3 nameserver3
EOF

3. 具体步骤

3.1 下载rocketmq的编译好的二进制包(4.7.1版本）

wget https://mirror.bit.edu.cn/apache/rocketmq/4.7.1/rocketmq-all-4.7.1-bin-release.zip

3.2 解压缩到到/usr/local/mq目录,并创建软链接

#解压到/usr/local
unzip rocketmq-all-4.7.1-bin-release.zip -d /usr/local/
cd /usr/local/
#创立软链接
ln -s rocketmq-all-4.7.1-bin-release rocketmq

3.3 安装java

#Ubuntu：
sudo apt install -y  openjdk-8-jdk*
#Centos：
sudo yum install -y java-1.8.0-openjdk*

4.初始化环境

4.1 设置环境变量

#如果是Ubuntu
echo 'export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64/'>> ~/.bashrc
#如果是Centos
echo 'export JAVA_HOME=/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.262.b10-0.el7_8.x86_64/'>> ~/.bashrc

#无论是Ubuntu还是Centos都执行如下：
#设置CLASSPATH
echo 'export CLASSPATH=$JAVA_HOME/lib:$JAVA_HOME/jre/lib'>> ~/.bashrc
#设置ROCKETMQ_HOME
echo 'export ROCKETMQ_HOME=/usr/local/rocketmq'>> ~/.bashrc
#添加到PATH
echo 'export PATH=$PATH:$ROCKETMQ_HOME/bin:$JAVA_HOME/bin:$JAVA_HOME/jre/bin'>> ~/.bashrc

4.2 加载环境变量

source ~/.bashrc

4.3  创建目录

#/data目录的空间至少为1T+
mkdir -pv {/data/logs,/data/rocketmq/store/commitlog}

4.4 修改rocketmq的主目录

sed -i 's#${user.home}#/data#g' $ROCKETMQ_HOME/conf/*.xml

4.5 修改Linux系统参数提高性能

cd $ROCKETMQ_HOME/bin
sudo ./os.sh

5 启动

5.1 启动nameserver

1) 生成配置

分别在nameserver1，nameserver2，nameserver3上执行:

#进入Rockmq的bin目录
cd $ROCKETMQ_HOME/bin
#生产nameserver的配置
cat >> namesrv.properties << EOF
rocketmqHome=/usr/local/rocketmq
kvConfigPath=/root/namesrv/kvConfig.json
productEnvName=center
clusterTest=false
orderMessageEnable=false
listenPort=9876
serverWorkerThreads=8
serverCallbackExecutorThreads=0
serverSelectorThreads=3
serverOnewaySemaphoreValue=256
serverAsyncSemaphoreValue=64
serverChannelMaxIdleTimeSeconds=120
serverSocketSndBufSize=65535
serverSocketRcvBufSize=65535
serverPooledByteBufAllocatorEnable=true
useEpollNativeSelector=true
EOF

2) 启动nameserver

cd $ROCKETMQ_HOME/bin
nohup ./mqnamesrv -c namesrv.properties &

5.2 启动broker

下面分别配置三台broker

5.2.1 配置Rocket集群

1) 配置broker1的环境变量

cat >> ~/.bashrc << EOF
Role=broker1
brokerId=0
GroupName=broker-a
EOF

 执行：source ~/.bashrc

2）配置broker1的启动配置

cd $ROCKETMQ_HOME
cat >conf/dledger/qmq-${Role}.conf<<EOF
brokerClusterName=QMQ
brokerId=${brokerId}
brokerRole=SYNC_MASTER
flushDiskType=ASYNC_FLUSH
brokerName=${GroupName}
namesrvAddr=nameserver1:9876;nameserver2:9876;nameserver3:9876
storePathRootDir=/data/rocketmq/${Role}
storePathCommitLog=/data/rocketmq/${Role}/commitlog
enableDLegerCommitLog=false
#凌晨4点触发一次删除
deleteWhen = 04
diskMaxUsedSpaceRatio=50
#只保留最近1天的消息
fileReservedTime = 24
sendMessageThreadPoolNums=8
defaultTopicQueueNums=16
maxTransferCountOnMessageInMemory=1000
waitTimeMillsInSendQueue=1000
transientStorePoolEnable=false
warmMapedFileEnable=false
transferMsgByHeap=true
maxTransferCountOnMessageInMemory=2000
maxTransferBytesOnMessageInMemory=2000*1024
EOF

3）启动broker1

cd $ROCKETMQ_HOME/bin
nohup sh mqbroker -c $ROCKETMQ_HOME/conf/dledger/qmq-${Role}.conf &

---

1）配置broker2环境变量

cat >> ~/.bashrc << EOF

Role=broker2

brokerId=0

GroupName=broker-b EOF

 执行：source ~/.bashrc

2）配置broker2的启动配置

cd $ROCKETMQ_HOME
cat >conf/dledger/qmq-${Role}.conf<<EOF
brokerClusterName=QMQ
brokerId=${brokerId}
brokerRole=SYNC_MASTER
flushDiskType=ASYNC_FLUSH
brokerName=${GroupName}
namesrvAddr=nameserver1:9876;nameserver2:9876;nameserver3:9876
storePathRootDir=/data/rocketmq/${Role}
storePathCommitLog=/data/rocketmq/${Role}/commitlog
enableDLegerCommitLog=false
#凌晨4点触发一次删除
deleteWhen = 04
diskMaxUsedSpaceRatio=50
#只保留最近1天的消息
fileReservedTime = 24
sendMessageThreadPoolNums=8
defaultTopicQueueNums=16
maxTransferCountOnMessageInMemory=1000
waitTimeMillsInSendQueue=1000
transientStorePoolEnable=false
warmMapedFileEnable=false
transferMsgByHeap=true
maxTransferCountOnMessageInMemory=2000
maxTransferBytesOnMessageInMemory=2000*1024
EOF

3）启动broker2

cd $ROCKETMQ_HOME/bin
nohup sh mqbroker -c $ROCKETMQ_HOME/conf/dledger/qmq-${Role}.conf &

---

1）配置broker3环境变量

cat >> ~/.bashrc << EOF
Role=broker3
brokerId=0
GroupName=broker-c
EOF

 执行：source ~/.bashrc

2）配置broker3的启动配置

cd $ROCKETMQ_HOME
cat >conf/dledger/qmq-${Role}.conf<<EOF
brokerClusterName=QMQ
brokerId=${brokerId}
brokerRole=SYNC_MASTER
flushDiskType=ASYNC_FLUSH
brokerName=${GroupName}
namesrvAddr=nameserver1:9876;nameserver2:9876;nameserver3:9876
storePathRootDir=/data/rocketmq/${Role}
storePathCommitLog=/data/rocketmq/${Role}/commitlog
enableDLegerCommitLog=false
#凌晨4点触发一次删除
deleteWhen = 04
diskMaxUsedSpaceRatio=50
#只保留最近1天的消息
fileReservedTime = 24
sendMessageThreadPoolNums=8
defaultTopicQueueNums=16
maxTransferCountOnMessageInMemory=1000
waitTimeMillsInSendQueue=1000
transientStorePoolEnable=false
warmMapedFileEnable=false
transferMsgByHeap=true
maxTransferCountOnMessageInMemory=2000
maxTransferBytesOnMessageInMemory=2000*1024
EOF

3）启动broker3

cd $ROCKETMQ_HOME/bin
nohup sh mqbroker -c $ROCKETMQ_HOME/conf/dledger/qmq-${Role}.conf &

5.3 其它命令

Broker其它命令

1. 关闭broker

sh mqshutdown broker
sh mqshutdown namesrv

2. 查看broker是否启动

#查看进程
jps -m

#查看端口
netstat -tupln|grep -E '309|409'

5.4 查看集群信息

通过控制台查询

 

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