1. 复现问题

今天登录rabbitMq后台管理，输入用户名和密码后，却报出这个错误：Not management user，如下图所示：

于是，决定执行命令rabbitmqctl list_users查看是否有这个用户。

首先在D:\Software\rabbitmq\rabbitmq_server-3.8.15\sbin目录下输入cmd:

在cmd命令窗口执行如下指令：

rabbitmqctl list_users

却报出如下错误：

D:\Software\rabbitmq\rabbitmq_server-3.8.15\sbin>rabbitmqctl list_users
Error: unable to perform an operation on node 'rabbit@DESKTOP-UVTEHFR'. 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 runningIn addition to the diagnostics info below:* See the CLI, clustering and networking guides on https://rabbitmq.com/documentation.html to learn more* Consult server logs on node rabbit@DESKTOP-UVTEHFR* If target node is configured to use long node names, don't forget to use --longnames with CLI toolsDIAGNOSTICS
===========attempted to contact: ['rabbit@DESKTOP-UVTEHFR']rabbit@DESKTOP-UVTEHFR:* connected to epmd (port 4369) on DESKTOP-UVTEHFR* epmd reports: node 'rabbit' not running at allno other nodes on DESKTOP-UVTEHFR* suggestion: start the nodeCurrent node details:* node name: 'rabbitmqcli-999-rabbit@DESKTOP-UVTEHFR'* effective user's home directory: C:\Users\zxy* Erlang cookie hash: pkFzX53V7Ok1QDOYqiMzXg==

2. 分析问题

将上述错误信息中这句话Error: unable to perform an operation on node 'rabbit@DESKTOP-UVTEHFR'. 翻译成中文为错误：无法在节点 'rabbit@DESKTOP-UVTEHFR 上执行操作。

为什么无法在节点'rabbit@DESKTOP-UVTEHFR 上之心操作呢？

于是去查找资料，网上说错误的原因是Erlang的cookie出现问题，Erlang会生成两个cookie文件，文件目录如下所示：

C:\Windows\System32\config\systemprofile\.erlang.cookie，但我的C:\Windows\System32\config\systemprofile\目录下并没有这个.erlang.cookie文件：

C:\用户\你的用户名\.erlang.cookie，比如我的地址为C:\Users\zxy\.erlang.cookie，如下图所示：

用后者的文件替换掉前者的文件。

3. 解决问题

将C:\用户\你的用户名\目录下的.erlang.cookie文件复制到C:\Windows\System32\config\systemprofile\目录，如下图所示：

如果C:\Windows\System32\config\systemprofile\已经存在.erlang.cookie文件，使用C:\用户\你的用户名\目录下的.erlang.cookie文件替换掉即可。

双击rabbitmq-server.bat重启rabbitmq服务，如下图所示：

在cmd命令行窗口再次输入rabbitmqctl list_users即可：

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文章目录

1. 复现问题

2. 分析问题

3. 解决问题

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