MySQL:新的MGR MySQL协议报错BUG
作者简介：高鹏，笔名八怪。《深入理解MySQL主从原理》图书作者，同时运营个人公众号“MySQL学习”，持续分享遇到的有趣case以及代码解析！
问题
这个问题，在线上环境偶尔遇到如下错误，甚至偶尔连主节点的bootstrap都不行，报错大概就是如下，
2024-05-22T11:53:07.919600+08:00 0 [ERROR] [MY-013780] [Repl] Plugin group_replication reported: 'Failed to establish MySQL client connection in Group Replication. Error establishing connection. Please refer to the manual to make sure that you configured Group Replication properly to work with MySQL Protocol connections.'
2024-05-22T11:53:07.919780+08:00 0 [ERROR] [MY-011735] [Repl] Plugin group_replication reported: '[GCS] The group communication engine failed to test connectivity to the local group communication engine on 192.168.1.86:3320. This may be due to one or more invalid configuration settings. Double-check your group replication
local address, firewall, SE Linux and TLS configurations and try restarting Group Replication on this server.'
