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RabbitMq 集群搭建
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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
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RabbitMQ相关端口
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- 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)
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相应端口开启防火墙设置
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添加EPEL源
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[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%]
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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‘
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100%[==========================================================================>] 245 --.-K/s in 0s
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2016-11-29 06:34:39 (27.5 MB/s) - ‘erlang_solutions.repo‘ saved [245/245]
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安装RabbitMQ软件版本：http://www.rabbitmq.com/releases/rabbitmq-server
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[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
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启动服务
[root@node139 ~]# systemctl enable rabbitmq-server.service
[root@node139 ~]# systemctl start rabbitmq-server.service
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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
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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
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RabbitMQ用户管理??
添加用户（用户名root，密码admin）
[root@node139 ~]# rabbitmqctl add_user admin admin
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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] ...
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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 "/" ...
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删除用户（删除guest用户）
[root@node139 ~]# rabbitmqctl delete_user guest
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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
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[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
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启动服务
[root@node140 ~]# systemctl start rabbitmq-server.service
[root@node140 ~]# rabbitmq-server -detached
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开通防火墙
[root@node140 ~]# firewall-cmd --permanent --add-port={4369/tcp,25672/tcp}
success
[root@node140 ~]# firewall-cmd --reload
success
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- 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
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[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
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[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" …
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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
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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
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其它节点需要做同样的操作
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登录站点http://192.168.190.139:15672/
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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；
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RabbitMq 集群搭建