epmd报告:节点“兔子”根本不运行

Question

我的RabbitMQ过去在我的Ubuntu16.04LTS服务器上运行得很好，但是突然间它拒绝启动。

服务器的主机名是canvas1。

我使用标准apt-get方法安装了它：

sudo apt-get update
sudo apt-get install rabbitmq-server

我试过这条线建议的C3，但没有用。

我尝试过sudo rm -rf /var/lib/rabbitmq/mnesia/*，然后重新启动，但它没有工作。

我也尝试过将127.0.0.0 canvas1添加到/etc/hosts中，并将export ERL_EPMD_ADDRESS=127.0.0.1添加到/etc/default/rabbitmq-server中，但它们都不起作用。

我试过卸载rabbitmq-服务器，清除它，并自动删除和自动释放，然后重新安装rabbitmq-服务器，它也不起作用。

下面是sudo service rabbitmq-server status显示的日志：

● rabbitmq-server.service - RabbitMQ Messaging Server
   Loaded: loaded (/lib/systemd/system/rabbitmq-server.service; enabled; vendor preset: enabled)
   Active: failed (Result: exit-code) since Mon 2019-05-20 16:00:11 CST; 7s ago
  Process: 5830 ExecStop=/usr/sbin/rabbitmqctl stop (code=exited, status=2)
  Process: 5523 ExecStartPost=/usr/lib/rabbitmq/bin/rabbitmq-server-wait (code=exited, status=0/SUCCESS)
  Process: 5522 ExecStart=/usr/sbin/rabbitmq-server (code=exited, status=1/FAILURE)
 Main PID: 5522 (code=exited, status=1/FAILURE)

May 20 16:00:11 canvas1 rabbitmq[5830]:   * epmd reports: node 'rabbit' not running at all
May 20 16:00:11 canvas1 rabbitmq[5830]:                   no other nodes on canvas1
May 20 16:00:11 canvas1 rabbitmq[5830]:   * suggestion: start the node
May 20 16:00:11 canvas1 rabbitmq[5830]: current node details:
May 20 16:00:11 canvas1 rabbitmq[5830]: - node name: 'rabbitmq-cli-5838@canvas1'
May 20 16:00:11 canvas1 rabbitmq[5830]: - home dir: .
May 20 16:00:11 canvas1 rabbitmq[5830]: - cookie hash: KCGs/YQo59BuMnMdMM416A==
May 20 16:00:11 canvas1 systemd[1]: rabbitmq-server.service: Control process exited, code=exited status=2
May 20 16:00:11 canvas1 systemd[1]: rabbitmq-server.service: Unit entered failed state.
May 20 16:00:11 canvas1 systemd[1]: rabbitmq-server.service: Failed with result 'exit-code'.

以及/var/log/rabbitmq/startup_log中的内容：

BOOT FAILED
===========

Error description:
   noproc

Log files (may contain more information):
   /var/log/rabbitmq/rabbit@canvas1.log
   /var/log/rabbitmq/rabbit@canvas1-sasl.log

Stack trace:
   [{gen,do_for_proc,2,[{file,"gen.erl"},{line,228}]},
    {gen_event,rpc,2,[{file,"gen_event.erl"},{line,239}]},
    {rabbit,ensure_working_log_handlers,0,
            [{file,"src/rabbit.erl"},{line,697}]},
    {rabbit,'-boot/0-fun-0-',0,[{file,"src/rabbit.erl"},{line,328}]},
    {rabbit,start_it,1,[{file,"src/rabbit.erl"},{line,356}]},
    {init,start_em,1,[]},
    {init,do_boot,3,[]}]

=INFO REPORT==== 20-May-2019::16:00:09.809084 ===
Error description:
   noproc

Log files (may contain more information):
   /var/log/rabbitmq/rabbit@canvas1.log
   /var/log/rabbitmq/rabbit@canvas1-sasl.log

Stack trace:
   [{gen,do_for_proc,2,[{file,"gen.erl"},{line,228}]},
    {gen_event,rpc,2,[{file,"gen_event.erl"},{line,239}]},
    {rabbit,ensure_working_log_handlers,0,
            [{file,"src/rabbit.erl"},{line,697}]},
    {rabbit,'-boot/0-fun-0-',0,[{file,"src/rabbit.erl"},{line,328}]},
    {rabbit,start_it,1,[{file,"src/rabbit.erl"},{line,356}]},
    {init,start_em,1,[]},
    {init,do_boot,3,[]}]


{"init terminating in do_boot",noproc}

以及/var/log/rabbitmq/startup_err中的内容：

init terminating in do_boot (noproc)

Crash dump is being written to: erl_crash.dump...done

也没有/var/log/rabbitmq/rabbit@canvas1.log。/var/log/rabbitmq/中的所有文件都是startup_log和startup_err。

/var/lib/rabbitmq/mnesia中也没有dets文件。那里只有一个pid文件，没有那个pid的进程。

erl_crash.dump可以在这里找到：https://drive.google.com/file/d/1aRSQ-DXkMUZr2domAB-oc6AbeI6-y07c/view?usp=sharing

我该如何解决这个问题？

Answer 1

看起来RabbitMQ在Ubuntu上与erlang的关系不太好，但我不知道为什么。

在完全卸载RabbitMQ和erlang之后，只重新安装RabbitMQ，一切都正常。