Docker 之 部署RabbitMQ集群并实现Haproxy代理(一)

前言

本小节我们学习一下使用Docker部署RabbitMQ集群。
RabbitMQ Docker Hub

• 目录参考

  [root@iZ2ze8sm5upgi8z1dcazqeZ rabbitmq]# pwd
  /workspace/rabbitmq
  [root@iZ2ze8sm5upgi8z1dcazqeZ rabbitmq]# tree
  .
  ├── config
  │   └── docker-compose.yml
  ├── data
  │   ├── rabbitmq1
  │   ├── rabbitmq2
  │   └── rabbitmq3
  └── haproxy-etc
      └── haproxy.cfg 
  	
  

• 拉取rabbitmq镜像

  docker pull rabbitmq:3.8-rc-management
  

  若不使用Rabbitmq的management功能，可以拉取镜像：rabbitmq:3.8-rc

• 创建Rabbitmq共享网络

  docker network create rabbitmqnet
  

  [root@iZ2ze8sm5upgi8z1dcazqeZ data]# docker network ls
  NETWORK ID          NAME                DRIVER              SCOPE
  203f098f2ed7        bridge              bridge              local
  901ab7f16e18        config_default      bridge              local
  e5878362fd0d        data_default        bridge              local
  e16693f5cfb7        example_default     bridge              local
  54da0f7e3311        host                host                local
  6ad755fc1934        none                null                local
  a4b8c1129340        rabbitmqnet         bridge              local
  [root@iZ2ze8sm5upgi8z1dcazqeZ data]# 
  

• 创建节点(三个节点)
  注意这里使用相同的 RABBITMQ_ERLANG_COOKIE 值

   ```
   #RabibitMQ Node1
   docker run -d \
   --name=rabbitmq1 \
   -p 5672:5672 \
   -p 15672:15672 \
   -v /workspace/rabbitmq/data/rabbitmq1:/var/lib/rabbitmq:z \
   -e RABBITMQ_DEFAULT_USER=Dustyone \
   -e RABBITMQ_DEFAULT_PASS=bai5331359 \
   -e RABBITMQ_NODENAME=rabbitmq1 \
   -e RABBITMQ_ERLANG_COOKIE='Dustyone-Murex-cluster-cookie' \
   -h rabbitmq1 \
   --net=rabbitmqnet \
   rabbitmq:3.8-rc-management
   
   #RabibitMQ Node2
   docker run -d \
   --name=rabbitmq2 \
   -p 5673:5672 \
   -p 15673:15672 \
   -v /workspace/rabbitmq/data/rabbitmq2:/var/lib/rabbitmq:z \
   -e RABBITMQ_DEFAULT_USER=Dustyone \
   -e RABBITMQ_DEFAULT_PASS=bai5331359 \
   -e RABBITMQ_NODENAME=rabbitmq2 \
   -e RABBITMQ_ERLANG_COOKIE='Dustyone-Murex-cluster-cookie' \
   -h rabbitmq2 \
   --net=rabbitmqnet \
   rabbitmq:3.8-rc-management
   
   #RabibitMQ Node3
   docker run -d \
   --name=rabbitmq3 \
   -p 5674:5672 \
   -p 15674:15672 \
   -v /workspace/rabbitmq/data/rabbitmq3:/var/lib/rabbitmq:z \
   -e RABBITMQ_DEFAULT_USER=Dustyone \
   -e RABBITMQ_DEFAULT_PASS=bai5331359 \
   -e RABBITMQ_NODENAME=rabbitmq3 \
   -e RABBITMQ_ERLANG_COOKIE='Dustyone-Murex-cluster-cookie' \
   -h rabbitmq3 \
   --net=rabbitmqnet \
   rabbitmq:3.8-rc-management
   ```
  

  	[root@iZ2ze8sm5upgi8z1dcazqeZ rabbitmq]# docker ps -a
  			CONTAINER ID        IMAGE                             COMMAND                  CREATED             STATUS              PORTS                                                                                        NAMES
  			d15e8aecfa21        rabbitmq:3.8-rc-management        "docker-entrypoint.s…"   3 seconds ago       Up 2 seconds        4369/tcp, 5671/tcp, 15671/tcp, 25672/tcp, 0.0.0.0:5674->5672/tcp, 0.0.0.0:15674->15672/tcp   rabbitmq3
  			ac5f2897f6de        rabbitmq:3.8-rc-management        "docker-entrypoint.s…"   9 seconds ago       Up 8 seconds        4369/tcp, 5671/tcp, 15671/tcp, 25672/tcp, 0.0.0.0:5673->5672/tcp, 0.0.0.0:15673->15672/tcp   rabbitmq2
  			5f7e538553cd        rabbitmq:3.8-rc-management        "docker-entrypoint.s…"   16 seconds ago      Up 15 seconds       4369/tcp, 5671/tcp, 0.0.0.0:5672->5672/tcp, 15671/tcp, 25672/tcp, 0.0.0.0:15672->15672/tcp   rabbitmq1
  

• 组建rabbitmq集群
  登陆Rabbitmq的后两个节点，执行命令加入第一个Rabbitmq节点集群

  ### Disk Node
  # docker exec rabbitmq2 bash -c \
  "rabbitmqctl stop_app && \
  rabbitmqctl reset && \
  rabbitmqctl join_cluster rabbitmq1@rabbitmq1 && \
  rabbitmqctl start_app"
  
  ### Ram Node
  # docker exec rabbitmq3 bash -c \
  "rabbitmqctl stop_app && \
  rabbitmqctl reset && \
  rabbitmqctl join_cluster --ram rabbitmq1@rabbitmq1 && \
  rabbitmqctl start_app"
  

  登录：http://你的公网IP:15672 ，使用rabbitmq1-Dustyone/bai5331359登录,登录其他节点，访问相应的端口并使用相应的用户名/密码登录即可
  

  退出集群

  # docker exec rabbitmq3 bash -c \
  "rabbitmqctl stop_app && \
  rabbitmqctl reset && \
  rabbitmqctl start_app"
  

  

• 拉取haproxy镜像

  docker pull haproxy
  

• 创建目录/workspace/rabbitmq/haproxy-etc,并在该路径下创建haprox.cfg配置文件

  [root@iZ2ze8sm5upgi8z1dcazqeZ haproxy-etc]# pwd
  /workspace/rabbitmq/haproxy-etc
  [root@iZ2ze8sm5upgi8z1dcazqeZ haproxy-etc]# tree
  .
  └── haproxy.cfg
  
  0 directories, 1 file
  [root@iZ2ze8sm5upgi8z1dcazqeZ haproxy-etc]#
  

  haproxy.cfg配置信息如下：

  #Simple configuration for an HTTP proxy listening on port 80 on all
  # interfaces and forwarding requests to a single backend "servers" with a
  # single server "server1" listening on 127.0.0.1:8000
  
  global
      daemon
      maxconn 256
  
  defaults
      mode http
      timeout connect 5000ms
      timeout client 5000ms
      timeout server 5000ms
  
  listen rabbitmq_cluster
      bind 0.0.0.0:5677
      option tcplog
      mode tcp
      balance leastconn
      server  rabbit1 rabbitmq1:5672 check inter 2s rise 2 fall 3
      server  rabbit2 rabbitmq2:5672 check inter 2s rise 2 fall 3
      server  rabbit3 rabbitmq3:5672 check inter 2s rise 2 fall 3
  
  listen http_front
      bind 0.0.0.0:8002
      stats uri /haproxy?stats
  
  listen rabbitmq_admin
      bind 0.0.0.0:8001
      server rabbit1 rabbitmq1:15672
      server rabbit2 rabbitmq2:15672
      server rabbit3 rabbitmq3:15672
  

• 拉取haproxy镜像

  docker pull haproxy
  

• 启动haproxy

  docker run -d \
      --name rabbitmq-haproxy \
      -p 8002:8002 -p 5677:5677 -p 8001:8001 \
      --net=rabbitmqnet \
      -v /workspace/rabbitmq/haproxy-etc:/usr/local/etc/haproxy:ro \
      haproxy:latest
  

  启动haproxy后，可以通过haproxy来访问rabbitmq集群：http://你的公网IP:8001
  

• 获取haproxy的状态：http://你的公网IP:8002/haproxy?stats