20210329 0. RocketMQ 安装

环境信息

• Java 版本：1.8
• CentOS 7
• RocketMQ 4.8.0

安装过程

1. 将压缩文件解压到 /rocketmq 目录

2. 启动 NameServer

   # bin 目录下
   ./mqnamesrv
   OpenJDK 64-Bit Server VM warning: Using the DefNew young collector with the CMS collector is deprecated and will likely be removed in a future release
   OpenJDK 64-Bit Server VM warning: UseCMSCompactAtFullCollection is deprecated and will likely be removed in a future release.
   OpenJDK 64-Bit Server VM warning: INFO: os::commit_memory(0x00000006c0000000, 2147483648, 0) failed; error='Cannot allocate memory' (errno=12)
   #
   # There is insufficient memory for the Java Runtime Environment to continue.
   # Native memory allocation (mmap) failed to map 2147483648 bytes for committing reserved memory.
   # An error report file with more information is saved as:
   # /rocketmq/rocketmq-all-4.8.0-bin-release/bin/hs_err_pid3019.log
   

   原因：虚拟机内存不足，需要调整 JVM 启动参数

   #	runserver.sh
   # JAVA_OPT="${JAVA_OPT} -server -Xms4g -Xmx4g -Xmn2g -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=320m"
   JAVA_OPT="${JAVA_OPT} -server -Xms256m -Xmx256m -Xmn128m -XX:MetaspaceSize=64m -XX:MaxMetaspaceSize=160m"
   

   调整参数后启动成功

   # 查看 NameServer 日志，日志默认生成在 ~/logs
   tail -f ~/logs/rocketmqlogs/namesrv.log
   

3. 启动 Broker

   [root@hwjlinux bin]# ./mqbroker -n localhost:9876
   OpenJDK 64-Bit Server VM warning: If the number of processors is expected to increase from one, then you should configure the number of parallel GC threads appropriately using -XX:ParallelGCThreads=N
   OpenJDK 64-Bit Server VM warning: INFO: os::commit_memory(0x00000005c0000000, 8589934592, 0) failed; error='Cannot allocate memory' (errno=12)
   #
   # There is insufficient memory for the Java Runtime Environment to continue.
   # Native memory allocation (mmap) failed to map 8589934592 bytes for committing reserved memory.
   # An error report file with more information is saved as:
   # /rocketmq/rocketmq-all-4.8.0-bin-release/bin/hs_err_pid3529.log
   

   原因：虚拟机内存不足，需要调整 JVM 启动参数

   # runbroker.sh
   # JAVA_OPT="${JAVA_OPT} -server -Xms8g -Xmx8g -Xmn4g"
   JAVA_OPT="${JAVA_OPT} -server -Xms256m -Xmx256m -Xmn128m"
   

   修改后再次启动成功

   使用 -c 指定配置文件

4. 调整 /etc/profile 内容

   #	/etc/profile 内增加内容
   export ROCKET_HOME=/rocketmq/rocketmq-all-4.8.0-bin-release
   export PATH=$PATH:$ROCKET_HOME/bin
   
   #	使配置生效
   source /etc/profile
   

5. 关闭 RocketMQ

   # 1.关闭NameServer
   mqshutdown namesrv
   # 2.关闭Broker
   mqshutdown broker
   

RocketMQ 环境测试

1. 修改 tool.sh

   # JAVA_OPT="${JAVA_OPT} -server -Xms1g -Xmx1g -Xmn256m -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=128m"
   JAVA_OPT="${JAVA_OPT} -server -Xms256m -Xmx256m -Xmn128m -XX:MetaspaceSize=64m -XX:MaxMetaspaceSize=64m"
   

2. 先启动消费者，等待接收消息

   # 1.设置环境变量
   export NAMESRV_ADDR=localhost:9876
   # 2.接收消息
   tools.sh org.apache.rocketmq.example.quickstart.Consumer
   

3. 后启动生产者，发送消息

   # 1.设置环境变量
   export NAMESRV_ADDR=localhost:9876
   # 2.使用安装包的Demo发送消息
   tools.sh org.apache.rocketmq.example.quickstart.Producer