无法启动 Rails 服务器！ "getaddrinfo: Name or service not known (SocketError)"

Question

当我尝试使用

运行 我的 rails 应用程序时

RAILS_ENV=production rails s -binding=128.199.95.219

我收到这个错误

/usr/local/rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/socket.rb:232:in `getaddrinfo': getaddrinfo: Name or service not known (SocketError)
from /usr/local/rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/socket.rb:232:in `foreach'
from /usr/local/rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/socket.rb:459:in `tcp_server_sockets'
from /usr/local/rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/webrick/utils.rb:70:in `create_listeners'
from /usr/local/rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/webrick/server.rb:133:in `listen'
from /usr/local/rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/webrick/server.rb:114:in `initialize'
from /usr/local/rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/webrick/httpserver.rb:45:in `initialize'
from /usr/local/rvm/gems/ruby-2.2.1/gems/rack-1.6.4/lib/rack/handler/webrick.rb:31:in `new'
from /usr/local/rvm/gems/ruby-2.2.1/gems/rack-1.6.4/lib/rack/handler/webrick.rb:31:in `run'
from /usr/local/rvm/gems/ruby-2.2.1/gems/rack-1.6.4/lib/rack/server.rb:286:in `start'
from /usr/local/rvm/gems/ruby-2.2.1/gems/railties-4.2.4/lib/rails/commands/server.rb:80:in `start'
from /usr/local/rvm/gems/ruby-2.2.1/gems/railties-4.2.4/lib/rails/commands/commands_tasks.rb:80:in `block in server'
from /usr/local/rvm/gems/ruby-2.2.1/gems/railties-4.2.4/lib/rails/commands/commands_tasks.rb:75:in `tap'
from /usr/local/rvm/gems/ruby-2.2.1/gems/railties-4.2.4/lib/rails/commands/commands_tasks.rb:75:in `server'
from /usr/local/rvm/gems/ruby-2.2.1/gems/railties-4.2.4/lib/rails/commands/commands_tasks.rb:39:in `run_command!'
from /usr/local/rvm/gems/ruby-2.2.1/gems/railties-4.2.4/lib/rails/commands.rb:17:in `<top (required)>'
from bin/rails:4:in `require'
from bin/rails:4:in `<main>'

我搜索了很多地方，但仍然没有找到可以解决这个问题的明确答案。

我的应用程序 运行 在 Ubuntu (14.0.4) 中与 Nginx 和 Unicorn 在 DigitalOcean

有人知道吗？

Answer 1

绑定参数使用双破折号，即：

RAILS_ENV=production rails s --binding=128.199.95.219

有关详细信息，请参阅 rails s --help。