Eventmachine start_tcp_server no acceptor - 端口正在使用或需要root权限（RuntimeError）

Posted 2023-02-25

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【中文标题】Eventmachine start_tcp_server no acceptor - 端口正在使用或需要root权限（RuntimeError）【英文标题】：Eventmachine start_tcp_server no acceptor - port is in use or requires root privileges (RuntimeError) 【发布时间】：2015-08-11 17:53:32 【问题描述】：

我已经有 3 天无法运行本地服务器了。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，它随机工作 - 我不知道为什么。我尝试了一次不同的端口并且有效，但从那时起，没有端口工作。每次我尝试运行我的 rails 服务器时，我都会得到这个。

/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 rails 时，我得到了这个输出：

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

当我运行ps aux | grep ruby 时，我得到了这个输出：

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

我的端口是否因某种原因关闭？

【问题讨论】：

如果你用sudo运行它会发生什么？你的意思是运行'sudo ps aux | grep 轨道'？我得到了这个输出： colmtuite 17258 0.0 0.0 2450180 672 s000 S+ 1:53am 0:00.00 grep rails 对于'sudo ps aux | grep ruby' 我得到了这个输出： colmtuite 17286 0.0 0.0 2441988 676 s000 S+ 1:55am 0:00.00 grep ruby 不，我的意思是尝试使用sudo 命令运行您的本地服务器:) 然后您将知道问题是否与root权限或正在使用的端口有关。我得到了这个输出：gist.github.com/colmtuite/9c7e11a17f51f273c0fe 【参考方案1】：

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