前言

• erlang 23.1
• rabbitmq server v3.8.9
• win 10

問題描述

使用 rabbitmqctl 命令時出現錯誤：

C:\Program Files\RabbitMQ Server\rabbitmq_server-3.8.9\sbin> rabbitmqctl status Error: unable to perform an operation on node 'rabbit@DESKTOP-1GHM2HM'. 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-1GHM2HM* If target node is configured to use long node names, don't forget to use --longnames with CLI toolsDIAGNOSTICS ===========attempted to contact: ['rabbit@DESKTOP-1GHM2HM']rabbit@DESKTOP-1GHM2HM:* connected to epmd (port 4369) on DESKTOP-1GHM2HM* 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 cookieCurrent node details:* node name: 'rabbitmqcli-20064-rabbit@DESKTOP-1GHM2HM'* effective user's home directory: C:\Users\admin* Erlang cookie hash: 37DhljkMemAT0RSfiJUaUQ==

有用的錯誤信息：Authentication failed (rejected by the remote node), please check the Erlang cookie

錯誤分析

官方說明 如下

核心思想是：RabbitMQ Windows service啟動時使用的 erlang cookie，與 RabbitMQ 命令行執行時使用的 erlang cookie，位置不一致。

解決辦法

官方解決辦法是：復制RabbitMQ Windows service啟動時使用的 erlang cookie，覆蓋掉RabbitMQ 命令行執行時使用的 erlang cookie。

非官方解決辦法有：

• 按照低版本的 erlang。(PS: 這個沒試過)
• 使用命令行啟動 RabbitMQ 。（執行 rabbitmq-server.bat 命令啟動 RabbitMQ）

參考

https://www.rabbitmq.com/cli.html#erlang-cookie
https://blog.csdn.net/J_Shine/article/details/78833456
https://www.cnblogs.com/hellxz/p/9104028.html
https://blog.csdn.net/yangl1337905751/article/details/80318055
https://www.rabbitmq.com/install-windows-manual.html

總結

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