Rails 服务器在启动时立即退出
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【中文标题】Rails 服务器在启动时立即退出【英文标题】：Rails server quits right when it starts 【发布时间】：2017-03-12 08:59:18 【问题描述】：我遇到这个问题有一段时间了，但没有找到解决办法。我正在 Rails 中构建一个论坛应用程序。我刚刚将引导程序和引导程序 gem 添加到我的项目中。我去运行服务器，它以一个巨大的错误退出。这里是。
Julies-MacBook-Air:railsnew juliechopourian$ rails server
=> Booting Puma
=> Rails 5.0.0.1 application starting in development on http://localhost:3000
=> Runrails server -hfor more startup options
Puma starting in single mode...
* Version 3.6.0 (ruby 2.3.1-p112), codename: Sleepy Sunday Serenity
* Min threads: 5, max threads: 5
* Environment: development
* Listening on tcp://localhost:3000
Exiting
/Users/juliechopourian/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/puma-3.6.0/lib/puma/binder.rb:266:ininitialize'：地址已在使用中 - bind(2) for "::1" 端口 3000 (Errno::EADDRINUSE)
来自 /Users/juliechopourian/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/puma-3.6.0/lib/puma/binder.rb:266:in new'
from /Users/juliechopourian/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/puma-3.6.0/lib/puma/binder.rb:266:inadd_tcp_listener'
来自 /Users/juliechopourian/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/puma-3.6.0/lib/puma/binder.rb:260:in block in add_tcp_listener'
from /Users/juliechopourian/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/puma-3.6.0/lib/puma/binder.rb:259:ineach'
来自 /Users/juliechopourian/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/puma-3.6.0/lib/puma/binder.rb:259:in add_tcp_listener'
from /Users/juliechopourian/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/puma-3.6.0/lib/puma/binder.rb:102:inblock 解析'
来自 /Users/juliechopourian/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/puma-3.6.0/lib/puma/binder.rb:85:in each'
from /Users/juliechopourian/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/puma-3.6.0/lib/puma/binder.rb:85:inparse'
来自 /Users/juliechopourian/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/puma-3.6.0/lib/puma/runner.rb:133:in load_and_bind'
from /Users/juliechopourian/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/puma-3.6.0/lib/puma/single.rb:85:inrun'
来自 /Users/juliechopourian/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/puma-3.6.0/lib/puma/launcher.rb:172:in run'
from /Users/juliechopourian/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/puma-3.6.0/lib/rack/handler/puma.rb:51:inrun'
来自 /Users/juliechopourian/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/rack-2.0.1/lib/rack/server.rb:296:in start'
from /Users/juliechopourian/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/railties-5.0.0.1/lib/rails/commands/server.rb:79:instart'
来自 /Users/juliechopourian/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/railties-5.0.0.1/lib/rails/commands/commands_tasks.rb:90:in block in server'
from /Users/juliechopourian/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/railties-5.0.0.1/lib/rails/commands/commands_tasks.rb:85:intap '
来自 /Users/juliechopourian/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/railties-5.0.0.1/lib/rails/commands/commands_tasks.rb:85:in server'
from /Users/juliechopourian/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/railties-5.0.0.1/lib/rails/commands/commands_tasks.rb:49:inrun_command ！
来自 /Users/juliechopourian/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/railties-5.0.0.1/lib/rails/commands.rb:18:in <top (required)>'
from /Users/juliechopourian/treehouse/rails_app/railsnew/bin/rails:9:inrequire'
来自 /Users/juliechopourian/treehouse/rails_app/railsnew/bin/rails:9:in <top (required)>'
from /Users/juliechopourian/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/spring-1.7.2/lib/spring/client/rails.rb:28:inload'
来自 /Users/juliechopourian/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/spring-1.7.2/lib/spring/client/rails.rb:28:in call'
from /Users/juliechopourian/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/spring-1.7.2/lib/spring/client/command.rb:7:incall '
来自 /Users/juliechopourian/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/spring-1.7.2/lib/spring/client.rb:30:in run'
from /Users/juliechopourian/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/spring-1.7.2/bin/spring:49:in'
来自 /Users/juliechopourian/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/spring-1.7.2/lib/spring/binstub.rb:11:in load'
from /Users/juliechopourian/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/spring-1.7.2/lib/spring/binstub.rb:11:in'
来自 /Users/juliechopourian/.rbenv/versions/2.3.1/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in require'
from /Users/juliechopourian/.rbenv/versions/2.3.1/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:inrequire'
来自 /Users/juliechopourian/treehouse/rails_app/railsnew/bin/spring:13:in <top (required)>'
from bin/rails:3:inload'
来自 bin/rails:3:in <main>'
Julies-MacBook-Air:railsnew juliechopourian$
我认为这可能与美洲狮宝石有关，但我真的不知道。任何帮助将不胜感激。如果我需要发布更多我的项目，请告诉我。
【问题讨论】：
EADDRINUSE 有时您可能会忘记终止最后一个终端会话，反查或在浏览器中关注 localhost:3000 看看会发生什么 【参考方案1】：导轨 5
ps辅助| grep 3000
如果 Rails 应用程序仍在运行
用户 3454 0.6 5.6 1708124 220676 pts/5 Sl+ 20:18 0:20 puma 3.6.0 (tcp://localhost:3000)
杀死 -9 3454
或
rails s -p 3001
【讨论】：
我跑了 ps aux | grep 3000 在终端中。我得到了这个... 59714 99.5 0.1 2668560 2812 ?? R Fri11AM 55:21.24 puma 3.6.0 (tcp://localhost:3000) [railsnew] ------ 62810 0.0 0.0 2442020 872 s000 S+ 1:09PM 0:00.00 grep 3000 杀死 59714 或重启电脑 ;) digitalocean.com/community/tutorials/… 对不起杀死-9 59714【参考方案2】：观看此Address already in use - bind(2) for "::1" port 3000 (Errno::EADDRINUSE)
端口 3000 上已经有东西在监听。请确保您没有其他 ruby 进程监听该端口。类似的东西
ps aux | grep ruby
【讨论】：
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