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我在笔记本电脑上安装了 RabbitMQ。我启动服务器 ( rabbitmq-server -detached) 然后rabbitmqctl start_app，一切正常（我的 Java 应用程序可以连接和发送/接收消息）。

$ rabbitmqctl start_app
Starting node 'rabbit@11-020-7206' ...

但是当我去另一个网络不同的地方时，笔记本电脑会得到另一个主机名，我不能再用它做任何事情了。如果我尝试停止或启动它，我会收到节点已关闭的错误。

$ rabbitmqctl stop
Stopping and halting node 'rabbit@Mahdis-MacBook-Pro' ...
Error: unable to connect to node 'rabbit@Mahdis-MacBook-Pro': nodedown

DIAGNOSTICS
===========

attempted to contact: ['rabbit@Mahdis-MacBook-Pro']

rabbit@Mahdis-MacBook-Pro:
  * connected to epmd (port 4369) on Mahdis-MacBook-Pro
  * epmd reports node 'rabbit' running on port 25672
  * TCP connection succeeded but Erlang distribution failed
  * suggestion: hostname mismatch?
  * suggestion: is the cookie set correctly?
  * suggestion: is the Erlang distribution using TLS?

current node details:
- node name: 'rabbitmq-cli-14528@Mahdis-MacBook-Pro'
- home dir: /Users/mahdi
- cookie hash: HBqyY/jYPLAyrH1wt3dTWQ==

如果我尝试完全启动服务器，它会说节点正在运行：

$ rabbitmq-server -detached
Warning: PID file not written; -detached was passed.
ERROR: node with name "rabbit" already running on "Mahdis-MacBook-Pro"

如何修复主机名以避免这种混淆？

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2 回答 2

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受@Gas 建议的启发，我找到了一种解决方法。如果我在将笔记本电脑移动到第二个位置之前将主机名改回原来的样子，rabbitmq（及其工具）会再次开始工作。

$ sudo hostname 11-020-7206
$ rabbitmqctl status
Status of node 'rabbit@11-020-7206' ...
[{pid,16230},
 {running_applications,[{rabbit,"RabbitMQ","3.5.4"},
....
于 2015-09-30T20:42:55.207 回答
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您启动 rabbitmq 节点，11-020-7206然后将主机名（与网络相关）更改为 Mahdis-MacBook-Pro.

一般来说，你应该总是有相同的hostname，但如果不可能，你可以使用rabbitmqctl -n node_name

这里有一个例子：

gabrielesMacBookPro:sbin gabriele$ ./rabbitmqctl status
Status of node rabbit@gabrielesMacBookPro ...
[{pid,59273},
 {running_applications,
     [{rabbitmq_management,"RabbitMQ Management Console","3.5.5"},
     ...

在这里我更改主机名：

gabrielesMacBookPro:sbin gabriele$ sudo hostname temp_hostname
Password:
gabrielesMacBookPro:sbin gabriele$ ./rabbitmqctl status
Status of node rabbit@temp_hostname ...
Error: unable to connect to node rabbit@temp_hostname: nodedown

DIAGNOSTICS
===========

attempted to contact: [rabbit@temp_hostname]

这样我就可以连接到正在运行的节点：

gabrielesMacBookPro:sbin gabriele$ ./rabbitmqctl -n rabbit@gabrielesMacBookPro status
Status of node rabbit@gabrielesMacBookPro ...
[{pid,59273},
 {running_applications,
     [{rabbitmq_management,"RabbitMQ Management Console","3.5.5"},
      {rabbitmq_web_dispatch,"RabbitMQ Web Dispatcher","3.5.5"},

希望能帮助到你

于 2015-09-30T06:41:31.010 回答