rabbitmq安装报错

问题描述
环境：Centos7

h3d@h3d2107:~$ sudo rabbitmqctl list_queues

Error: unable to connect to node rabbit@ma: nodedown

DIAGNOSTICS
===========

attempted to contact: [rabbit@h3d2107]

root@ma:
  * connected to epmd (port 4369) on SC-201607101239
  * epmd reports node 'rabbit' running on port 25672
  * TCP connection succeeded but Erlang distribution failed
  * suggestion: hostname mismatch?
  * suggestion: is the cookie set correctly?
  * suggestion: is the Erlang distribution using TLS?

current node details:
- node name: 'rabbitmq-cli-2296@h3d2107'
- home dir: /var/lib/rabbitmq
- cookie hash: GrEiTedcyLioix0+618jhw==

解决方式：
sudo cp /var/lib/rabbitmq/.erlang.cookie ~/.erlang.cookie

重启即可

原因：
RabbitMQ的erlang.cookie和用户的cookie冲突了，需要用rabbitmq的cookie去覆盖用户的cookie。