Ruby on Rails mac服务器已在运行时的问题

Question

我正在尝试开始学习Ruby on Rails，但是我遇到了一个让服务器正确启动或停止的问题，我不知道为什么。

据我所知，当我启动一个服务器时，它会一直运行，直到我按下Ctrl +C关闭它。

但是，如果我运行bin/rails服务器来启动它，它会显示已经有一台服务器在端口3000上运行，所以我需要使用不同的端口，这在下面已经完成了。我不想每次都创建新的端口。

伙计们，我做错了什么？

Gavins-MacBook-Pro:buro MacBook$ bin/rails server -p 3001
=> Booting WEBrick
=> Rails 4.2.1 application starting in development on http://localhost:3001
=> Run `rails server -h` for more startup options
=> Ctrl-C to shutdown server
A server is already running. Check /Users/MacBook/buro/tmp/pids/server.pid.
Exiting
Gavins-MacBook-Pro:buro MacBook$ 
Gavins-MacBook-Pro:buro MacBook$ bin/rails server -p 3001
=> Booting WEBrick
=> Rails 4.2.1 application starting in development on http://localhost:3001
=> Run `rails server -h` for more startup options
=> Ctrl-C to shutdown server
A server is already running. Check /Users/MacBook/buro/tmp/pids/server.pid.
Exiting
Gavins-MacBook-Pro:buro MacBook$ bin/rails server -p 3002
=> Booting WEBrick
=> Rails 4.2.1 application starting in development on http://localhost:3002
=> Run `rails server -h` for more startup options
=> Ctrl-C to shutdown server
A server is already running. Check /Users/MacBook/buro/tmp/pids/server.pid.
Exiting
Gavins-MacBook-Pro:buro MacBook$ 

此外，我还尝试删除pid文件，但仍然得到以下结果：

Gavins-MacBook-Pro:buro MacBook$ bin/rails server
=> Booting WEBrick
=> Rails 4.2.1 application starting in development on http://localhost:3000
=> Run `rails server -h` for more startup options
=> Ctrl-C to shutdown server
[2015-07-24 10:58:14] INFO  WEBrick 1.3.1
[2015-07-24 10:58:14] INFO  ruby 2.2.2 (2015-04-13) [x86_64-darwin14]
Exiting
/Users/MacBook/.rbenv/versions/2.2.2/lib/ruby/2.2.0/socket.rb:206:in `bind': Address already in use - bind(2) for 127.0.0.1:3000 (Errno::EADDRINUSE)
    from /Users/MacBook/.rbenv/versions/2.2.2/lib/ruby/2.2.0/socket.rb:206:in `listen'
    from /Users/MacBook/.rbenv/versions/2.2.2/lib/ruby/2.2.0/socket.rb:461:in `block in tcp_server_sockets'
    from /Users/MacBook/.rbenv/versions/2.2.2/lib/ruby/2.2.0/socket.rb:232:in `each'
    from /Users/MacBook/.rbenv/versions/2.2.2/lib/ruby/2.2.0/socket.rb:232:in `foreach'
    from /Users/MacBook/.rbenv/versions/2.2.2/lib/ruby/2.2.0/socket.rb:459:in `tcp_server_sockets'
    from /Users/MacBook/.rbenv/versions/2.2.2/lib/ruby/2.2.0/webrick/utils.rb:70:in `create_listeners'
    from /Users/MacBook/.rbenv/versions/2.2.2/lib/ruby/2.2.0/webrick/server.rb:133:in `listen'
    from /Users/MacBook/.rbenv/versions/2.2.2/lib/ruby/2.2.0/webrick/server.rb:114:in `initialize'
    from /Users/MacBook/.rbenv/versions/2.2.2/lib/ruby/2.2.0/webrick/httpserver.rb:45:in `initialize'
    from /Users/MacBook/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/rack-1.6.4/lib/rack/handler/webrick.rb:31:in `new'
    from /Users/MacBook/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/rack-1.6.4/lib/rack/handler/webrick.rb:31:in `run'
    from /Users/MacBook/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/rack-1.6.4/lib/rack/server.rb:286:in `start'
    from /Users/MacBook/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/commands/server.rb:80:in `start'
    from /Users/MacBook/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/commands/commands_tasks.rb:80:in `block in server'
    from /Users/MacBook/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/commands/commands_tasks.rb:75:in `tap'
    from /Users/MacBook/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/commands/commands_tasks.rb:75:in `server'
    from /Users/MacBook/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/commands/commands_tasks.rb:39:in `run_command!'
    from /Users/MacBook/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/commands.rb:17:in `<top (required)>'
    from /Users/MacBook/buro/bin/rails:8:in `require'
    from /Users/MacBook/buro/bin/rails:8:in `<top (required)>'
    from /Users/MacBook/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/spring-1.3.6/lib/spring/client/rails.rb:28:in `load'
    from /Users/MacBook/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/spring-1.3.6/lib/spring/client/rails.rb:28:in `call'
    from /Users/MacBook/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/spring-1.3.6/lib/spring/client/command.rb:7:in `call'
    from /Users/MacBook/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/spring-1.3.6/lib/spring/client.rb:26:in `run'
    from /Users/MacBook/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/spring-1.3.6/bin/spring:48:in `<top (required)>'
    from /Users/MacBook/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/spring-1.3.6/lib/spring/binstub.rb:11:in `load'
    from /Users/MacBook/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/spring-1.3.6/lib/spring/binstub.rb:11:in `<top (required)>'
    from /Users/MacBook/.rbenv/versions/2.2.2/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require'
    from /Users/MacBook/.rbenv/versions/2.2.2/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require'
    from /Users/MacBook/buro/bin/spring:13:in `<top (required)>'
    from bin/rails:3:in `load'
    from bin/rails:3:in `<main>'

Answer 1

做

ps ax | grep server

查找您的rails服务器。每个结果行中的第一个数字是进程id，也就是"pid“。您可以像这样终止这些进程

kill -9 12345

其中12345是一个示例pid。

把他们都杀了，然后

rm tmp/pids/server.pid

为了更好的衡量。顺便说一句，这些都是在终端中完成的，位于应用程序的根文件夹(运行服务器的位置)。