RocketMQ快速开始

环境准备

• 64bit OS, Linux/Unix/Mac is recommended
• 64bit JDK 1.8+
• Maven 3.5.4
• Git

1.Download

wget -c https://www.apache.org/dyn/closer.cgi?path=rocketmq/4.3.0/rocketmq-all-4.3.0-source-release.zip

2.Build from Release

unzip rocketmq-all-4.3.0-source-release.zip
cd rocketmq-all-4.3.0/
mvn -Prelease-all -DskipTests clean install -U
cd distribution/target/apache-rocketmq

3.Start Name Server

nohup sh bin/mqnamesrv &
tail -f ~/logs/rocketmqlogs/namesrv.log
The Name Server boot success...

4.Start Broker

nohup sh bin/mqbroker -n localhost:9876 &
tail -f ~/logs/rocketmqlogs/broker.log 
The broker[%s, 172.30.30.233:10911] boot success...

注意：如果这里启动失败，查看内存是否足够，打开runbroker.sh文件，对应修改参数为
JAVA_OPT=”-server -Xms4g -Xmx4g -Xmn2g -XX:PermSize=128m -XX:MaxPermSize=320m”
此时运行java程序时VM提示如下警告：
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option PermSize=512m; support was removed in 8.0
原因：-XX:PermSize和-XX:MaxPermSize在jdk1.8中被弃用，使用-XX:MetaspaceSize和-XX:MaxMetaspaceSize替代
JAVA_OPT=”-server -Xms4g -Xmx4g -Xmn2g -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=320m”

按照官方文档[ nohup sh bin/mqbroker -n localhost:9876 & ]启动broker会报错：

com.alibaba.rocketmq.client.exception.MQClientException: No route info of this topic, TopicTest1
See http://docs.aliyun.com/cn#/pub/ons/faq/exceptions&topic_not_exist for further details.
    at com.alibaba.rocketmq.client.impl.producer.DefaultMQProducerImpl.sendDefaultImpl(DefaultMQProducerImpl.java:542)
    at com.alibaba.rocketmq.client.impl.producer.DefaultMQProducerImpl.send(DefaultMQProducerImpl.java:1030)
    at com.alibaba.rocketmq.client.impl.producer.DefaultMQProducerImpl.send(DefaultMQProducerImpl.java:989)
    at com.alibaba.rocketmq.client.producer.DefaultMQProducer.send(DefaultMQProducer.java:90)
    at com.yang.rocketmq.Producer.main(Producer.java:45)

• 将broker启动方式改为：nohup sh mqbroker -n localhost:9876 autoCreateTopicEnable=true &

5.Send & Receive Messages

Before sending/receiving messages, we need to tell clients the location of name servers. RocketMQ provides multiple ways to achieve this. For simplicity, we use environment variable NAMESRV_ADDR

export NAMESRV_ADDR=localhost:9876
sh bin/tools.sh org.apache.rocketmq.example.quickstart.Producer
SendResult [sendStatus=SEND_OK, msgId= ...

sh bin/tools.sh org.apache.rocketmq.example.quickstart.Consumer
ConsumeMessageThread_%d Receive New Messages: [MessageExt...

6.Shutdown Servers

sh bin/mqshutdown broker
The mqbroker(36695) is running...
Send shutdown request to mqbroker(36695) OK

sh bin/mqshutdown namesrv
The mqnamesrv(36664) is running...
Send shutdown request to mqnamesrv(36664) OK