RocketMQ 01
主要内容:
- 编译安装
- HelloWorld
- 官网名词
官方网站
http://rocketmq.apache.org
GitHub
https://github.com/apache/rocketmq
Quick Start
Linux下使用Maven编译源码安装
Rocketmq4.6+需要jdk1.8环境编译和运行
各版本要求
Version | Client | Broker | NameServer |
---|---|---|---|
4.0.0-incubating | >=1.7 | >=1.8 | >=1.8 |
4.1.0-incubating | >=1.6 | >=1.8 | >=1.8 |
4.2.0 | >=1.6 | >=1.8 | >=1.8 |
4.3.x | >=1.6 | >=1.8 | >=1.8 |
4.4.x | >=1.6 | >=1.8 | >=1.8 |
4.5.x | >=1.6 | >=1.8 | >=1.8 |
4.6.x | >=1.6 | >=1.8 | >=1.8 |
1.从GitHub上下载源码并上传到服务器
2.在Linux上安装Maven
下载Maven
wget https://mirrors.tuna.tsinghua.edu.cn/apache/maven/maven-3/3.6.3/binaries/apache-maven-3.6.3-bin.tar.gz
添加阿里云镜像
修改maven/conf
目录下的settings.xml
在mirrors
节点下添加
<mirror> <id>aliyun-maven</id> <mirrorOf>*</mirrorOf> <name>aliyun maven</name> <url>http://maven.aliyun.com/nexus/content/groups/public</url>
</mirror>
配置maven环境变量
修改/etc/profile
export M2_HOME=/usr/local/maven
export PATH=$PATH:$M2_HOME/bin
配置java环境变量
export JAVA_HOME="/usr/java/jdk1.8.0_181-amd64"
export CLASS_PATH="$JAVA_HOME/lib"
export PATH=".$PATH:$JAVA_HOME/bin"
环境变量修完执行source /etc/profile
立即生效
进入rocketmq主目录编译项目
mvn -Prelease-all -DskipTests clean install -U
3.启动nameserver
bin
目录下执行
./mqnamesrv
正常提示
4.启动Broker
./mqbroker -n localhost:9876
正常提示
5.测试消息发送
使用tool.sh
脚本执行测试程序
在bin
目录下执行
./tools.sh org.apache.rocketmq.example.quickstart.Producer
提示如下表示成功
6.接受消息
./tools.sh org.apache.rocketmq.example.quickstart.Consumer
控制台rocketmq-console编译安装
下载
https://github.com/apache/rocketmq-externals
中文指南
https://github.com/apache/rocketmq-externals/blob/master/rocketmq-console/doc/1_0_0/UserGuide_CN.md
上传到服务器并解压缩
编译
进入rocketmq-console
目录
执行编译
mvn clean package -Dmaven.test.skip=true
启动
编译成功后在rocketmq-console/target
目录下执行rocketmq-console-ng-1.0.1.jar
启动时,直接动态添加nameserver
地址或编辑application.properties
添加属性
java -jar rocketmq-console-ng-1.0.1.jar --rocketmq.config.namesrvAddr=127.0.0.1:9876
启动成功后访问服务器8080端口即可
pom.xml依赖
<dependency><groupId>org.apache.rocketmq</groupId><artifactId>rocketmq-client</artifactId><version>4.6.1</version></dependency>
安装启动常见错误
编译时包无法在mirror上找到 提示502错误
**原因:**网络不好或maven仓库服务器出错
重试即可,或者欢迎镜像仓库
发送失败提示connect to null failed
./tools.sh org.apache.rocketmq.example.quickstart.Producer
22:49:02.470 [main] DEBUG i.n.u.i.l.InternalLoggerFactory - Using SLF4J as the default logging framework
RocketMQLog:WARN No appenders could be found for logger (io.netty.util.internal.PlatformDependent0).
RocketMQLog:WARN Please initialize the logger system properly.
java.lang.IllegalStateException: org.apache.rocketmq.remoting.exception.RemotingConnectException: connect tonull failed
**原因:**不知道nameserver
在哪儿
在tools
脚本中添加
export NAMESRV_ADDR=localhost:9876
启动broker失败 Cannot allocate memory
**原因:**jvm启动初始化内存分配大于物理内存
[root@node-113b bin]# ./mqbroker -n localhost:9876
Java HotSpot(TM) 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:
# /usr/local/rocketmq/bin/hs_err_pid1997.log
修改启动脚本中的jvm参数
runbroker.sh
broker
runserver.sh
nameserver
默认数值给的都很大,改小即可
JAVA_OPT="${JAVA_OPT} -server -Xms256m -Xmx256m -Xmn128m -XX:MetaspaceSize=64m -XX:MaxMetaspaceSize=100m"
启动broker成功但提示:Failed to obtain the host name
[root@node-113b bin]# ./mqbroker -n localhost:9876
22:30:42.307 [main] ERROR RocketmqCommon - Failed to obtain the host name
java.net.UnknownHostException: node-113b: node-113b: No address associated with hostnameat java.net.InetAddress.getLocalHost(InetAddress.java:1505) ~[na:1.8.0_181]at org.apache.rocketmq.common.BrokerConfig.localHostName(BrokerConfig.java:189) [rocketmq-common-4.6
.1.jar:4.6.1] at org.apache.rocketmq.common.BrokerConfig.<init>(BrokerConfig.java:38) [rocketmq-common-4.6.1.jar:4
.6.1] at org.apache.rocketmq.broker.BrokerStartup.createBrokerController(BrokerStartup.java:110) [rocketmq
-broker-4.6.1.jar:4.6.1] at org.apache.rocketmq.broker.BrokerStartup.main(BrokerStartup.java:58) [rocketmq-broker-4.6.1.jar:4
.6.1]Caused by: java.net.UnknownHostException: node-113b: No address associated with hostnameat java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method) ~[na:1.8.0_181]at java.net.InetAddress$2.lookupAllHostAddr(InetAddress.java:928) ~[na:1.8.0_181]at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1323) ~[na:1.8.0_181]at java.net.InetAddress.getLocalHost(InetAddress.java:1500) ~[na:1.8.0_181]... 4 common frames omitted
The broker[DEFAULT_BROKER, 192.168.150.213:10911] boot success. serializeType=JSON and name server is localh
ost:9876
**原因:**无法解析当前的主机名
hosts里添加映射即可
192.168.150.213 node-113b
linux日期校准
安装ntpdate
yum install ntpdatentpdate ntp1.aliyun.com
RocketMQ 官网名词
官网首页
Apache RocketMQ™ is a unified messaging engine, lightweight data processing platform.
Apache RocketMQ™ 是一个标准化的消息引擎,轻量级的处理平台
unified messaging engine :标准化消息引擎
lightweight data processing platform:轻量级处理平台
生词:
Community:社区
unified :统一的;一致标准的
messaging :消息传递,收发
engine:引擎
platform:平台
processing :处理、计算
Low Latency
低延迟
More than 99.6% response latency within 1 millisecond under high pressure.
在高压力下,1毫秒的延迟内可以响应超过99.6%的请求
Finance Oriented
金融方向,面向金融
High availability with tracking and auditing features.
系统具有高可用性支撑了追踪和审计的特性
Industry Sustainable
行业可发展性
Trillion-level message capacity guaranteed.
保证了万亿级别的消息容量。
生词:
Low Latency :低延迟
high pressure:高压
Oriented :面向
Finance : 金融
tracking :追踪
auditing :审计
Industry :产业、行业
Sustainable:可持续发展
Trillion-level : 万亿级别
capacity : 容量
guaranteed:有保证的
Vendor Neutral
中立厂商
Neutral:中立的
Vendor :厂商
A new open distributed messaging and streaming standard since latest 4.1 version.
在最新的4.1版本开放了一个新的分布式消息和流标准
BigData Friendly
对大数据友好
Batch transferring with versatile integration for flooding throughput.
批量传输与多功能集成支撑了海量吞吐。
Massive Accumulation
大量的积累
Given sufficient disk space, accumulate messages without performance loss.
只要给与足够的磁盘空间,就可以累积消息而不会造成性能损失。
生词:
standard : 标准
since : 自……以来
latest :最新的
version:版本
BigData :大数据
Batch :批量
transferring :转移、传输
versatile:多功能的
integration :集成
flooding:淹没、泛洪、泛滥
throughput:吞吐量
flooding throughput: 海量吞吐
Massive :大量的
Accumulation : 积累
sufficient:足够的
disk space:磁盘空间
accumulate :积累
performance loss:性能损失