RabbitMq 集群搭建

   

实验环境：

操作系统为 Centos 7.2

IP hostName

192.168.190.132 node132

192.168.190.139 node139

192.168.190.140 node140

   

RabbitMQ相关端口

   

• 4369 (epmd)
• 5672, 5671 (AMQP 0-9-1 and 1.0 without and with TLS)
• 25672. This port used by Erlang distribution for inter-node and CLI tools communication and is allocated from a dynamic range (limited to a single port by default, computed as AMQP port + 20000). Seenetworking guide for details.
• 15672 (if management plugin is enabled)
• 61613, 61614 (if STOMP is enabled)
• 1883, 8883 (if MQTT is enabled)

     

  相应端口开启防火墙设置

     

     

  添加EPEL源

     

  [root@node139 ~]# rpm -Uvh https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm

  Retrieving https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm

  warning: /var/tmp/rpm-tmp.2hDPSr: Header V3 RSA/SHA256 Signature, key ID 352c64e5: NOKEY

  Preparing... ################################# [100%]

  Updating / installing...

  1:epel-release-7-8 ################################# [100%]

     

  
  添加Erlang源

     

  [root@node139 ~]# rpm -Uvh http://packages.erlang-solutions.com/erlang-solutions-1.0-1.noarch.rpm

  Retrieving http://packages.erlang-solutions.com/erlang-solutions-1.0-1.noarch.rpm

  Preparing... ################################# [100%]

  Updating / installing...

  1:erlang-solutions-1.0-1 ################################# [100%]

  --2016-11-29 06:34:38-- http://packages.erlang-solutions.com/rpm/centos/erlang_solutions.repo

  Resolving packages.erlang-solutions.com (packages.erlang-solutions.com)... 31.172.186.53

  Connecting to packages.erlang-solutions.com (packages.erlang-solutions.com)|31.172.186.53|:80... connected.

  HTTP request sent, awaiting response... 200 OK

  Length: 245

  Saving to: 'erlang_solutions.repo'

     

  100%[==========================================================================>] 245 --.-K/s in 0s

     

  2016-11-29 06:34:39 (27.5 MB/s) - 'erlang_solutions.repo' saved [245/245]

     

  
  安装RabbitMQ

  软件版本：http://www.rabbitmq.com/releases/rabbitmq-server

     

  [root@node139 ~]# wget http://www.rabbitmq.com/releases/rabbitmq-server/v3.6.6/rabbitmq-server-3.6.6-1.el7.noarch.rpm

  [root@node139 ~]# rpm --import https://www.rabbitmq.com/rabbitmq-signing-key-public.asc

  [root@node139 ~]# yum install rabbitmq-server-3.6.6-1.el7.noarch.rpm

     

  启动服务

  [root@node139 ~]# systemctl enable rabbitmq-server.service

  [root@node139 ~]# systemctl start rabbitmq-server.service

     

  
  启用RabbitMQ监控插件

  [root@node139 ~]# rabbitmq-plugins enable rabbitmq_management

  The following plugins have been enabled:

  mochiweb

  webmachine

  rabbitmq_web_dispatch

  amqp_client

  rabbitmq_management_agent

  rabbitmq_management

     

  Applying plugin configuration to rabbit@node139... started 6 plugins.

  [root@node139 ~]# netstat -apn | grep 15672

  tcp 0 0 0.0.0.0:15672 0.0.0.0:* LISTEN 4119/beam.smp

     

  
  RabbitMQ用户管理

     

  添加用户（用户名root，密码admin）

  [root@node139 ~]# rabbitmqctl add_user admin admin

     

  设置用户角色（设置admin用户为管理员角色）

  [root@node139 ~]# rabbitmqctl set_user_tags admin administrator

  Setting tags for user "admin" to [administrator] ...

     

  设置用户权限（设置admin用户配置、写、读的权限）

  [root@node139 ~]# rabbitmqctl set_permissions -p / admin ".*" ".*" ".*"

  Setting permissions for user "admin" in vhost "/" ...

     

  删除用户（删除guest用户）

  [root@node139 ~]# rabbitmqctl delete_user guest

     

     

  RabbitMQ集群配置

  集群配置在单机配置完成的基础上进行

  以下以node140为例，node132需要做同样的操作

  • 添加/etc/hosts条目

  在node132、node139、node140里的/etc/hosts文件中分别添加：

  192.168.190.132 node132
  192.168.190.139 node139
  192.168.190.140 node140

     

  • 设置每个节点Cookie

  Rabbitmq的集群是依赖于erlang的集群来工作的，所以必须先构建起erlang的集群环境。Erlang的集群中各节点是通过一个magic cookie来实现的，这个cookie存放在 /var/lib/rabbitmq/.erlang.cookie 中，文件是400的权限。所以必须保证各节点cookie保持一致，否则节点之间就无法通信

     

  [root@node140 /]# echo -n "AZVOCZYZZBVFLBPTBXU" > /var/lib/rabbitmq/.erlang.cookie

  [root@node140 ~]# chown rabbitmq:root /var/lib/rabbitmq/.erlang.cookie

  [root@node140 /]# chmod 600 /var/lib/rabbitmq/.erlang.cookie

  [root@node140 /]# cat /var/lib/rabbitmq/.erlang.cookie

  AZVOCZYZZBVFLBPTBXU

     

  启动服务

  [root@node140 ~]# systemctl start rabbitmq-server.service

  [root@node140 ~]# rabbitmq-server -detached

     

  开通防火墙

  [root@node140 ~]# firewall-cmd --permanent --add-port={4369/tcp,25672/tcp}

  success

  [root@node140 ~]# firewall-cmd --reload

  success

     

• 加入集群

  默认是磁盘节点，如果是内存节点的话，需要加--ram参数

     

  [root@node140 ~]# rabbitmqctl stop_app

  Stopping node rabbit@node140 ...

  [root@node140 ~]# rabbitmqctl join_cluster rabbit@node139

  Clustering node rabbit@node140 with rabbit@node139 ...

  [root@node140 ~]# rabbitmqctl start_app

  Starting node rabbit@node140 ...

• 设置镜像策略

     

  [root@node140 ~]# rabbitmqctl set_policy ha-all "^" '{"ha-mode":"all","ha-sync-mode":"automatic"}'

  Setting policy "ha-all" for pattern "^" to "{"ha-mode":"all","ha-sync-mode":"automatic"}" with priority "0" …

     

  
  启用RabbitMQ监控插件

  cluster搭建起来后若在web管理工具中rabbitmq_management的Overview的Nodes部分看到"Node statistics not available"的信息，说明在该节点上web管理插件还未启用。

  [root@node140 ~]# rabbitmq-plugins enable rabbitmq_management

     

  集群配置好后，可以在 RabbitMQ 任意节点上执行下面的命令来查看是否集群配置成功。

  [root@node140 ~]# rabbitmqctl cluster_status

     

  其它节点需要做同样的操作

     

     

  登录站点http://192.168.190.139:15672/

     

  

     

  

     

     

     

  参考网址：http://www.rabbitmq.com/clustering.html

  安装中遇到的问题：

  这个/var/lib/rabbitmq/.erlang.cookie文件需要修改文件所有者和文件的权限为rw，否则rabbitmq服务无法启动；