我的 LAN 有一个可用的 Rails 暂存服务器，如下所示:
rails server --binding=0.0.0.0 -p 3000
我现在想在我的 LAN 中打开第二个并发的 Rails 服务器，如下所示:
rails server --binding=0.0.0.0 -p 3001
不幸的是，我收到此错误消息:
...
=> Booting Puma
=> Rails 5.1.1 application starting in development on http://0.0.0.0:3001
=> Run `rails server -h` for more startup options
A server is already running. ...
仅当我在两台服务器上都使用 --binding=0.0.0.0 时才会出现此错误，如果我希望我的 LAN 可以访问它，这是必需的。
如何在同一台机器上向局域网开放多个 Rails 服务器，而不仅仅是 localhost？
编辑:
尝试 Vasfed 的解决方案后，例如
rails server --binding=0.0.0.0 -p 3000 --pid=tmp/pids/server0.pid
rails server --binding=0.0.0.0 -p 3001 --pid=tmp/pids/server1.pid
问题仍然存在，但这次我有更多信息。这似乎与正在打开的端口 9292 有关...
=> Booting Puma
=> Rails 5.1.1 application starting in development on http://0.0.0.0:3001
=> Run `rails server -h` for more startup options
*** SIGUSR2 not implemented, signal based restart unavailable!
*** SIGUSR1 not implemented, signal based restart unavailable!
*** SIGHUP not implemented, signal based logs reopening unavailable!
Puma starting in single mode...
* Version 3.9.1 (ruby 2.4.1-p111), codename: Private Caller
* Min threads: 0, max threads: 16
* Environment: development
* Listening on tcp://0.0.0.0:9292
Exiting
C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/puma-3.9.1/lib/puma/binder.rb:269:in `initialize': Only one usage of each socket address (protocol/network address/port) is normally permitted. - bind(2) for "0.0.0.0" port 9292 (Errno::EADDRINUSE)
最佳答案
Rails 检查 pid 文件是否已经存在。要运行单个应用程序的两个副本，您也应该更改 pids:
rails server --binding=0.0.0.0 -p 3000 --pid=tmp/pids/server1.pid
rails server --binding=0.0.0.0 -p 3001 --pid=tmp/pids/server2.pid
关于ruby-on-rails - 具有绑定(bind)的多个并发 Rails 服务器，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/52820219/