简介：
使用docker-compose部署rocketmq5.0。文中会介绍docker-compose版本以及需要注意的项第一步：进入hub.docker.com搜索rocketmq
我们选择第一个，因为第一个是7个月前更新的，（我看有很多博客使用的依旧是最下面的那种版本，但是现在的一些配置已经都不一样了，导致很多东西不能用）
第二步：下载docker-compose并赋予权限
https://get.daocloud.io/#install-compose
# get.daocloud.io是国内链接，因此可以高速安装
curl -L https://get.daocloud.io/docker/compose/releases/download/v2.12.2/docker-compose-`uname -s`-`uname -m` > /usr/local/bin/docker-compose提示：v2.12.2是版本号，可以自己更换
chmod +x /usr/local/bin/docker-compose #授权，如果没有赋予权限，下一步是查不到的docker-compose version # docker-compose -v 都可以查看版本
执行刚刚复制的命令下载rocketmq最新版
docker pull apache/rocketmq:latest
第三步：进入服务器建立需要映射的文件夹和文件
提示：推荐在/usr/local中建立，因为linux中每个文件夹都有其用意，我们应该遵守规则。
1、建立文件夹
mkdir rocketmq
mkdir rocketmq/logs
mkdir rocketmq/data
mkdir rocketmq/conf不小心建错使用下面命令删除
rm -rf 文件夹名称 2、在conf文件夹下建立broker.conf文件
vim broker.confbroker.conf的内容可以从这里复制：
https://github.com/apache/rocketmq/blob/master/distribution/conf/broker.conf
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
brokerClusterName = DefaultCluster
brokerName = broker-a
brokerId = 0
deleteWhen = 04
fileReservedTime = 48
brokerRole = ASYNC_MASTER
flushDiskType = ASYNC_FLUSH说明：我们之所以要建立broker.conf文件，是因为我们需要通过这个文件把RocketMQ管理起来,尽管我们可以暂时什么都不做
3、在rocketmq文件夹中建立docker-compose.yml文件
vim docker-compose.ymlversion: '3.8'
services:
rmqnamesrv:
image: apache/rocketmq:latest
container_name: rmqnamesrv
ports:
- 9876:9876
volumes:
- /usr/local/rocketmq/logs:/home/rocketmq/logs
environment:
JAVA_OPT_EXT: "-Duser.home=/home/rocketmq -Xms256M -Xmx256M -Xmn128m"
command: ["sh","mqnamesrv"]
broker:
image: apache/rocketmq:latest
container_name: rmqbroker
ports:
- 10909:10909
- 10911:10911
volumes:
- /usr/local/rocketmq/logs:/root/logs
- /usr/local/rocketmq/store:/root/store
- /usr/local/rocketmq/conf/broker.conf:/home/rocketmq/broker.conf
links:
- rmqnamesrv:namesrv
#restart: always
depends_on:
- 'rmqnamesrv'
environment:
NAMESRV_ADDR: namesrv:9876
JAVA_OPT_EXT: "-Duser.home=/home/rocketmq -Xms256M -Xmx256M -Xmn128m"
command: ["sh","mqbroker","-c","/home/rocketmq/broker.conf","autoCreateTopicEnable=true"]
rmqdashboard:
image: apacherocketmq/rocketmq-dashboard:latest
container_name: rocketmq-dashboard
ports:
- 8082:8080
environment:
JAVA_OPTS: "-Drocketmq.namesrv.addr=namesrv:9876"
注意：volumes参数的映射规则是，" : "冒号前面是宿主机的文件夹和文件路径，冒号后面是容器内的路径。在配置broker的volumes时，容器内的路径一定要用root开头，否则会导致broker启动的时候一直退出，查看日志也没有任何信息，只能在docker-compose up的时候看见：rmqbroker exited with code 253
说明：
apacherocketmq/rocketmq-dashboard:latest
这个镜像是控制台的镜像，在docker-compose中配置好之后，启动时会自动下载（其实所有镜像配置完成后在启动时都会校验，没有则自动下载）
启动
docker-compose up -d # “ -d ” 指后台运行，想看启动时的日志可以不用加成功
结尾
附加几个docker-compose常用的命令，如果配置有问题，方便删除重新构建
验证编写的docker-compose.yml 是否正确
docker-compose build
或者
docker-compose config -g停止docker-compose运行的镜像
docker-compose stop停止并删除docker-compose运行的镜像
docker-compose down删除docker-compose发布的容器
docker-compose rm
