1.安装好mq后，查看状态，错误
S D:\RabbitMQ Server\rabbitmq_server-3.7.0\sbin> .\rabbitmqctl status
Status of node rabbit@DESKTOP-ECFDCQB ...
Error: unable to perform an operation on node 'rabbit@DESKTOP-ECFDCQB'. Please see diagnostics information and suggestions below.
Most common reasons for this are:
* Target node is unreachable (e.g. due to hostname resolution, TCP connection or firewall issues)
* CLI tool fails to authenticate with the server (e.g. due to CLI tool's Erlang cookie not matching that of the server)
* Target node is not running
In addition to the diagnostics info below:
* See the CLI, clustering and networking guides on http://rabbitmq.com/documentation.html to learn more
* Consult server logs on node rabbit@DESKTOP-ECFDCQB
DIAGNOSTICS
===========
attempted to contact: ['rabbit@DESKTOP-ECFDCQB']
rabbit@DESKTOP-ECFDCQB:
* connected to epmd (port 4369) on DESKTOP-ECFDCQB
* epmd reports node 'rabbit' uses port 25672 for inter-node and CLI tool traffic
* TCP connection succeeded but Erlang distribution failed
* Authentication failed (rejected by the remote node), please check the Erlang cookie
Current node details:
* node name: 'rabbitmqcli80@DESKTOP-ECFDCQB'
* effective user's home directory: C:\Users\tracyclock
* Erlang cookie hash: Gue+A5xaV3AGwaGPZAEp3A==
解决方法：将C:\Users\tracyclock\.erlang.cookie 文件拷贝到C:\Windows\System32\config\systemprofile替换掉.erlang.cookie文件