無法啟動Rails服務器！ “ getaddrinfo：名稱或服務未知（SocketError）”

Question

當我嘗試使用以下方式運行Rails應用程序時

RAILS_ENV=production rails s -binding=128.199.95.219

我得到這個錯誤

/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>'

我在很多地方搜索過Google，但仍然找不到可以解決此問題的明確答案。

我的應用程序在DigitalOcean的Nginx和Unicorn的Ubuntu（14.0.4）中運行

有人知道嗎？

Answer 1

對綁定參數使用雙破折號 ，即：

RAILS_ENV=production rails s --binding=128.199.95.219

有關更多信息，請參見rails s --help 。