Ruby on rails Eventmachine启动\u tcp\u服务器无接受器-端口正在使用或需要根权限（RuntimeError）

我已经三天没能运行本地服务器了。重新启动我的电脑没有帮助。有几次，在反复尝试大约40-50次后，它随机起作用了——我不知道为什么。我曾经尝试过一个不同的端口，但效果很好，但从那时起，没有一个端口可以工作。每次我尝试运行rails服务器时，我都会得到这样的结果

/Users/colmtuite/.rvm/gems/ruby-2.2.0/gems/eventmachine-1.0.5/lib/eventmachine.rb:526:in `start_tcp_server': no acceptor (port is in use or requires root privileges) (RuntimeError)
    from /Users/colmtuite/.rvm/gems/ruby-2.2.0/gems/eventmachine-1.0.5/lib/eventmachine.rb:526:in `start_server'
    from /Users/colmtuite/.rvm/gems/ruby-2.2.0/gems/thin-1.5.1/lib/thin/backends/tcp_server.rb:16:in `connect'
    from /Users/colmtuite/.rvm/gems/ruby-2.2.0/gems/thin-1.5.1/lib/thin/backends/base.rb:55:in `block in start'
    from /Users/colmtuite/.rvm/gems/ruby-2.2.0/gems/eventmachine-1.0.5/lib/eventmachine.rb:187:in `call'
    from /Users/colmtuite/.rvm/gems/ruby-2.2.0/gems/eventmachine-1.0.5/lib/eventmachine.rb:187:in `run_machine'
    from /Users/colmtuite/.rvm/gems/ruby-2.2.0/gems/eventmachine-1.0.5/lib/eventmachine.rb:187:in `run'
    from /Users/colmtuite/.rvm/gems/ruby-2.2.0/gems/thin-1.5.1/lib/thin/backends/base.rb:63:in `start'
    from /Users/colmtuite/.rvm/gems/ruby-2.2.0/gems/thin-1.5.1/lib/thin/server.rb:159:in `start'
    from /Users/colmtuite/.rvm/gems/ruby-2.2.0/gems/rack-1.6.1/lib/rack/handler/thin.rb:19:in `run'
    from /Users/colmtuite/.rvm/gems/ruby-2.2.0/gems/rack-1.6.1/lib/rack/server.rb:286:in `start'
    from /Users/colmtuite/.rvm/gems/ruby-2.2.0/gems/railties-4.2.0/lib/rails/commands/server.rb:80:in `start'
    from /Users/colmtuite/.rvm/gems/ruby-2.2.0/gems/railties-4.2.0/lib/rails/commands/commands_tasks.rb:80:in `block in server'
    from /Users/colmtuite/.rvm/gems/ruby-2.2.0/gems/railties-4.2.0/lib/rails/commands/commands_tasks.rb:75:in `tap'
    from /Users/colmtuite/.rvm/gems/ruby-2.2.0/gems/railties-4.2.0/lib/rails/commands/commands_tasks.rb:75:in `server'
    from /Users/colmtuite/.rvm/gems/ruby-2.2.0/gems/railties-4.2.0/lib/rails/commands/commands_tasks.rb:39:in `run_command!'
    from /Users/colmtuite/.rvm/gems/ruby-2.2.0/gems/railties-4.2.0/lib/rails/commands.rb:17:in `<top (required)>'
    from bin/rails:4:in `require'
    from bin/rails:4:in `<main>'

当我运行

ps aux | grep ruby

时，我得到以下输出：

colmtuite        6422   0.0  0.0  2441988    668 s002  S+    2:44am   0:00.00 grep rails

colmtuite       13305   0.0  0.0  2423356    200 s000  R+    8:15pm   0:00.00 grep ruby

---

我的端口是因为某种原因关闭的吗？

我也有同样的问题

这对我有用

$ ps ax | grep rails

然后使用进程id终止进程

$ kill -9 [process Id]

范例

$ kill -9 20496

---

再次启动服务器

如果运行sudosudo，会发生什么？您是说运行“sudo ps aux | grep rails”吗？我得到这个输出：colmtuite 17258 0.0 0 0.0 2450180 672 s000 S+1:53am 0:00.00 grep rails for'sudo ps aux | grep ruby'我得到这个输出：colmtuite 17286 0.0 0 0.0 2441988 676 s000 S+1:55am 0:00.00 grep rubyNo，我想尝试使用

sudo

命令运行本地服务器：），然后您就会知道问题是否与根权限或正在使用的端口有关。我得到以下输出：