【发布时间】：2016-05-17 19:40:46
【问题描述】：
所以我已经运行这个 rails 服务器大约一个月了，在重新启动计算机后（我试图在我的 mac 上添加全局环境变量），当我运行“rails s”时，服务器现在踢出这个错误。我确保 localhost 和虚拟域也都指向 127.0.0.1。正如我所说，在重新启动之前，这工作正常，但之后出现错误。
=> Booting Unicorn
=> Rails 4.2.0 application starting in development on http://localhost:3000
=> Run `rails server -h` for more startup options
=> Ctrl-C to shutdown server
Exiting
/Users/chris/.rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/unicorn- 4.8.3/lib/unicorn/configurator.rb:604:in `pack_sockaddr_in': getaddrinfo: nodename nor servname provided, or not known (SocketError)
from /Users/chris/.rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/unicorn-4.8.3/lib/unicorn/configurator.rb:604:in `canonicalize_tcp'
from /Users/chris/.rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/unicorn-4.8.3/lib/unicorn/configurator.rb:590:in `expand_addr'
from /Users/chris/.rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/unicorn-4.8.3/lib/unicorn/http_server.rb:236:in `listen'
from /Users/chris/.rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/unicorn-4.8.3/lib/unicorn/http_server.rb:809:in `block in bind_new_listeners!'
from /Users/chris/.rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/unicorn-4.8.3/lib/unicorn/http_server.rb:809:in `each'
from /Users/chris/.rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/unicorn-4.8.3/lib/unicorn/http_server.rb:809:in `bind_new_listeners!'
from /Users/chris/.rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/unicorn-4.8.3/lib/unicorn/http_server.rb:138:in `start'
from /Users/chris/.rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/unicorn-rails-2.2.0/lib/unicorn_rails.rb:33:in `run'
from /Users/chris/.rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/rack-1.6.0/lib/rack/server.rb:286:in `start'
from /Users/chris/.rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.0/lib/rails/commands/server.rb:80:in `start'
from /Users/chris/.rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.0/lib/rails/commands/commands_tasks.rb:80:in `block in server'
from /Users/chris/.rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.0/lib/rails/commands/commands_tasks.rb:75:in `tap'
from /Users/chris/.rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.0/lib/rails/commands/commands_tasks.rb:75:in `server'
from /Users/chris/.rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.0/lib/rails/commands/commands_tasks.rb:39:in `run_command!'
from /Users/chris/.rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.0/lib/rails/commands.rb:17:in `<top (required)>'
from /Users/chris/bbplm/bin/rails:8:in `require'
from /Users/chris/bbplm/bin/rails:8:in `<top (required)>'
from /Users/chris/.rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/spring-1.2.0/lib/spring/client/rails.rb:27:in `load'
from /Users/chris/.rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/spring-1.2.0/lib/spring/client/rails.rb:27:in `call'
from /Users/chris/.rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/spring-1.2.0/lib/spring/client/command.rb:7:in `call'
from /Users/chris/.rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/spring-1.2.0/lib/spring/client.rb:26:in `run'
from /Users/chris/.rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/spring-1.2.0/bin/spring:48:in `<top (required)>'
from /Users/chris/.rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/spring-1.2.0/lib/spring/binstub.rb:11:in `load'
from /Users/chris/.rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/spring-1.2.0/lib/spring/binstub.rb:11:in `<top (required)>'
from /Users/chris/bbplm/bin/spring:16:in `require'
from /Users/chris/bbplm/bin/spring:16:in `<top (required)>'
from bin/rails:3:in `load'
from bin/rails:3:in `<main>'
从 gemfile 中删除 spring 后，我捆绑安装并尝试重新运行服务器。这是我收到的错误。
=> Booting Unicorn
=> Rails 4.2.0 application starting in development on http://localhost:3000
=> Run `rails server -h` for more startup options
=> Ctrl-C to shutdown server
Exiting
/Users/chris/.rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/unicorn-4.8.3/lib/unicorn/configurator.rb:604:in `pack_sockaddr_in': getaddrinfo: nodename nor servname provided, or not known (SocketError)
from /Users/chris/.rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/unicorn-4.8.3/lib/unicorn/configurator.rb:604:in `canonicalize_tcp'
from /Users/chris/.rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/unicorn-4.8.3/lib/unicorn/configurator.rb:590:in `expand_addr'
from /Users/chris/.rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/unicorn-4.8.3/lib/unicorn/http_server.rb:236:in `listen'
from /Users/chris/.rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/unicorn-4.8.3/lib/unicorn/http_server.rb:809:in `block in bind_new_listeners!'
from /Users/chris/.rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/unicorn-4.8.3/lib/unicorn/http_server.rb:809:in `each'
from /Users/chris/.rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/unicorn-4.8.3/lib/unicorn/http_server.rb:809:in `bind_new_listeners!'
from /Users/chris/.rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/unicorn-4.8.3/lib/unicorn/http_server.rb:138:in `start'
from /Users/chris/.rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/unicorn-rails-2.2.0/lib/unicorn_rails.rb:33:in `run'
from /Users/chris/.rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/rack-1.6.0/lib/rack/server.rb:286:in `start'
from /Users/chris/.rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.0/lib/rails/commands/server.rb:80:in `start'
from /Users/chris/.rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.0/lib/rails/commands/commands_tasks.rb:80:in `block in server'
from /Users/chris/.rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.0/lib/rails/commands/commands_tasks.rb:75:in `tap'
from /Users/chris/.rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.0/lib/rails/commands/commands_tasks.rb:75:in `server'
from /Users/chris/.rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.0/lib/rails/commands/commands_tasks.rb:39:in `run_command!'
from /Users/chris/.rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.0/lib/rails/commands.rb:17:in `<top (required)>'
from bin/rails:8:in `require'
from bin/rails:8:in `<main>'
【问题讨论】：
-
尝试从您的
Gemfile中删除spring，运行bundle install，然后尝试启动您的服务器。不知道究竟是什么原因造成的，但这在过去对我有用。 -
验证您的 DNS 是否有效
-
尝试删除 gem 和捆绑安装。具有不同堆栈跟踪的相同错误。此外，我的 DNS 似乎在系统中运行良好。你有具体的检查方法吗？访问所有网站都可以正常工作。
-
我已经在 Ubuntu VM 中重建了环境，并且使用完全相同的代码一切正常。我真的希望我能弄清楚它为什么会抛出这个错误。
-
尝试明确地转到127.0.0.1:3000，以防某些恶作剧者在您的 DNS 中将
localhost定义为 127.0.0.1 以外的其他内容 - 它偶尔会发生！
标签： ruby-on-rails ruby-on-rails-4