rabbitmq启动异常

堆栈追踪关键字error
wait4(97802, ERROR: epmd error for host node02: address (cannot connect to host/port)

查看/etc/hosts文件，果然主机名和ip解析异常。
mqserver会连接主机名:4369
Epmd 是 Erlang Port Mapper Daemon 的缩写，在 Erlang 集群中相当于 dns 的作用，绑定在4369端口上。

https://developer.aliyun.com/article/42298#:~:text=epmd 代表 Erlang 端口映射守护进程（Erlang Port Mapper Daemon）。 ,%E6%AF%8F%E5%90%AF%E5%8A%A8%E4%B8%80%E4%B8%AA%E8%8A%82%E7%82%B9%EF%BC%8C%E9%83%BD%E4%BC%9A%E6%A3%80%E6%9F%A5%E6%9C%AC%E5%9C%B0%E6%9C%BA%E5%99%A8%E4%B8%8A%E6%98%AF%E5%90%A6%E8%BF%90%E8%A1%8C%E7%9D%80%20epmd%20%EF%BC%8C%E5%A6%82%E6%9E%9C%E6%B2%A1%E6%9C%89%EF%BC%8C%E8%8A%82%E7%82%B9%E5%B0%B1%E4%BC%9A%E8%87%AA%E8%A1%8C%E5%90%AF%E5%8A%A8%20epmd%20%E3%80%82%20epmd%20%E4%BC%9A%E8%BF%BD%E8%B8%AA%E5%9C%A8%E6%9C%AC%E5%9C%B0%E6%9C%BA%E5%99%A8%E4%B8%8A%E8%BF%90%E8%A1%8C%E7%9A%84%E6%AF%8F%E4%B8%AA%E8%8A%82%E7%82%B9%EF%BC%8C%E5%B9%B6%E8%AE%B0%E5%BD%95%E5%88%86%E9%85%8D%E7%BB%99%E5%AE%83%E4%BB%AC%E7%9A%84%E7%AB%AF%E5%8F%A3%E3%80%82
https://www.cnblogs.com/me-sa/p/erlang-epmd.html
https://www.dba.cn/book/erlang/BingFaBianCheng/ERLANGFenBuShiBianCheng.html
https://blog.csdn.net/yaomingyang/article/details/103583024
https://blog.csdn.net/qq_53795917/article/details/134341650