最近趁着双十一整了两个服务器，搭建一个双主双从同步的rocketmq集群。
因为只有两个服务器（42.193.126.26 ： 以下称服务器A， 39.106.211.60 ： 以下称服务器B），每台服务器交错搭一个主一个从。
要求：每台服务器需要安装jdk环境。
每台服务器对应的服务端口规划：
| 服务器名称 | 服务 | 端口 |
| 服务器A | nameserver | 9876 |
| BrokerA-master | 10910 | |
| BrokerB-slave | 10921 | |
| 服务器B | nameserver | 9876 |
| BrokerA-slave | 10911 | |
| BrokerB-master | 10920 |
下面开始具体操作：
1.本地下载压缩包，上传到两台服务器路径下
下载4.4版本二进制压缩包：https://archive.apache.org/dist/rocketmq/4.4.0/rocketmq-all-4.4.0-bin-release.zip在每台服务器 /usr/local目录下创建rocketmq文件夹
然后把本地的压缩包上传至/usr/local/rocketmq 目录下
2.在服务器A上解压压缩包，配置
使用unzip 解压后，切换到/usr/local/rocketmq/rocketmq-all-4.4.0-bin-release/conf/2m-2s-sync目录下：
编辑 broker-a.properties
#Broker 对外服务的监听端口
listenPort=10910
#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
#nameServer地址，分号分割
namesrvAddr=39.106.211.60:9876;42.193.126.26:9876
#存储路径
storePathRootDir=/usr/local/rocketmq/store/broker-a
#commitLog 存储路径
storePathCommitLog=/usr/local/rocketmq/store/broker-a/commitlog
#消费队列存储路径存储路径
storePathConsumeQueue=/usr/local/rocketmq/store/broker-a/consumequeue
#消息索引存储路径
storePathIndex=/usr/local/rocketmq/store/broker-a/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
编辑 broker-b-s.properties
#Broker 对外服务的监听端口
listenPort=10921
#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
#nameServer地址，分号分割
namesrvAddr=39.106.211.60:9876;42.193.126.26:9876
#存储路径
storePathRootDir=/usr/local/rocketmq/store/broker-b-s
#commitLog 存储路径
storePathCommitLog=/usr/local/rocketmq/store/broker-b-s/commitlog
#消费队列存储路径存储路径
storePathConsumeQueue=/usr/local/rocketmq/store/broker-b-s/consumequeue
#消息索引存储路径
storePathIndex=/usr/local/rocketmq/store/broker-b-s/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
3.在服务器B上解压压缩包，配置
使用unzip 解压后，切换到/usr/local/rocketmq/rocketmq-all-4.4.0-bin-release/conf/2m-2s-sync目录下：
编辑 broker-b.properties
#Broker 对外服务的监听端口
listenPort=10920
#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
#nameServer地址，分号分割
namesrvAddr=39.106.211.60:9876;42.193.126.26:9876
#存储路径
storePathRootDir=/usr/local/rocketmq/store/broker-b
#commitLog 存储路径
storePathCommitLog=/usr/local/rocketmq/store/broker-b/commitlog
#消费队列存储路径存储路径
storePathConsumeQueue=/usr/local/rocketmq/store/broker-b/consumequeue
#消息索引存储路径
storePathIndex=/usr/local/rocketmq/store/broker-b/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
编辑 broker-a-s.properties
#Broker 对外服务的监听端口
listenPort=10911
#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
#nameServer地址，分号分割
namesrvAddr=39.106.211.60:9876;42.193.126.26:9876
#存储路径
storePathRootDir=/usr/local/rocketmq/store/broker-a-s
#commitLog 存储路径
storePathCommitLog=/usr/local/rocketmq/store/broker-a-s/commitlog
#消费队列存储路径存储路径
storePathConsumeQueue=/usr/local/rocketmq/store/broker-a-s/consumequeue
#消息索引存储路径
storePathIndex=/usr/local/rocketmq/store/broker-a-s/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
4.在服务器A上创建文件夹：mkdir -p /usr/local/rocketmq/store/broker-a /usr/local/rocketmq/store/broker-a/consumequeue /usr/local/rocketmq/store/broker-a/commitlog /usr/local/rocketmq/store/broker-a/index /usr/local/rocketmq/logs /usr/local/rocketmq/store/broker-b-s /usr/local/rocketmq/store/broker-b-s/consumequeue /usr/local/rocketmq/store/broker-b-s/commitlog /usr/local/rocketmq/store/broker-b-s/index
5.在服务器B上创建文件夹：mkdir -p /usr/local/rocketmq/store/broker-a-s /usr/local/rocketmq/store/broker-a-s/consumequeue /usr/local/rocketmq/store/broker-a-s/commitlog /usr/local/rocketmq/store/broker-a-s/index /usr/local/rocketmq/logs /usr/local/rocketmq/store/broker-b /usr/local/rocketmq/store/broker-b/consumequeue /usr/local/rocketmq/store/broker-b/commitlog /usr/local/rocketmq/store/broker-b/index
6.在两台服务器上启动NameServer：
启动nameserver
切到安装rocketmq bin文件目录下
nohup sh mqnamesrv>/usr/local/rocketmq/logs/mqnamesrv.log 2>&1 &
查看nameserver是否启动成功
tail -f /usr/local/rocketmq/logs/mqnamesrv.log
7.服务器A启动BrokerServer:
主
nohup sh mqbroker -c /usr/local/rocketmq/rocketmq-all-4.4.0-bin-release/conf/2m-2s-sync/broker-a.properties> /usr/local/rocketmq/logs/broker-a.log 2>&1 &
查看是否启动成功：tail -f /usr/local/rocketmq/logs/cat broker-a.log
从
nohup sh mqbroker -c /usr/local/rocketmq/rocketmq-all-4.4.0-bin-release/conf/2m-2s-sync/broker-b-s.properties> /usr/local/rocketmq/logs/broker-b-s.log 2>&1 &
查看是否启动成功：tail -f /usr/local/rocketmq/logs/cat broker-b-s.log
8.服务器B启动BrokerServer:
从
nohup sh mqbroker -c /usr/local/rocketmq/rocketmq-all-4.4.0-bin-release/conf/2m-2s-sync/broker-a-s.properties> /usr/local/rocketmq/logs/broker-a-s.log 2>&1 &
查看是否启动成功：tail -f /usr/local/rocketmq/logs/cat broker-a-2.log
主
nohup sh mqbroker -c /usr/local/rocketmq/rocketmq-all-4.4.0-bin-release/conf/2m-2s-sync/broker-b.properties > /usr/local/rocketmq/logs/broker-b.log 2>&1 &
查看是否启动成功：tail -f /usr/local/rocketmq/logs/cat broker-b.log
------------------------------以上rocketmq集群服务启动完毕--------------------------------
注意：用jps查看每台服务器应该有一个NameServer和两个BrokerServer服务在运行着，表明启动成功；
1.启动过程中可能出现内存不足，需要调整bin目录下的runserver.sh ， runbroker.sh中的jvm参数大小
2.停止服务的时候需要注意，要先停止broker，其次停止nameserver。
切换到bin目录下，依次执行如下命令：
sh mqshutdown namesrv
sh mqshutdown broker
-------------------------------以下是安装rocketmq可视化控制台-----------------------------
1.下载
https://codeload.github.com/apache/rocketmq-externals/zip/refs/heads/release-rocketmq-console-1.0.0
2.修改application.properties
3.打包成jar
mvn clean package -Dmaven.test.skip=true
4.启动jar
java -jar rocketmq-console-ng-1.0.0.jar
5.访问
http://42.193.126.26:7928
注意启动jar包是可能出现连不上服务，需要在/usr/local/rocketmq/rocketmq-all-4.4.0-bin-release/conf 目录下修改配置文件broker.conf
加上配置项：brokerIP1 = 你服务器的公网ip地址
至此rocketmq双主双从同步的集群搭建成功！