远程服务器上的`rails s`命令的javascript运行时错误答案

【问题标题】：javascript runtime error with `rails s` command on remote server远程服务器上的`rails s`命令的javascript运行时错误
【发布时间】：2013-06-08 22:18:16
【问题描述】：

我刚刚设置了一个 VPS 来准备启动一个 Rails 应用程序，在实际的远程服务器上，我创建了一个新的 rails 项目来测试它，只做rails new blog -d postgresql。然后我尝试使用rails s 命令启动服务器并得到以下错误。

.rvm/gems/ruby-1.9.3-p429@anwalt/gems/execjs-1.4.0/lib/execjs/runtimes.rb:51:in `autodetect': Could not find a JavaScript runtime. See https://github.com/sstephenson/execjs for a list of available runtimes. (ExecJS::RuntimeUnavailable)
    from /home/michael/.rvm/gems/ruby-1.9.3-p429@anwalt/gems/execjs-1.4.0/lib/execjs.rb:5:in `<module:ExecJS>'
    from /home/michael/.rvm/gems/ruby-1.9.3-p429@anwalt/gems/execjs-1.4.0/lib/execjs.rb:4:in `<top (required)>'
    from /home/michael/.rvm/gems/ruby-1.9.3-p429@anwalt/gems/uglifier-2.1.1/lib/uglifier.rb:3:in `require'
    from /home/michael/.rvm/gems/ruby-1.9.3-p429@anwalt/gems/uglifier-2.1.1/lib/uglifier.rb:3:in `<top (required)>'
    from /home/michael/.rvm/gems/ruby-1.9.3-p429@global/gems/bundler-1.3.5/lib/bundler/runtime.rb:72:in `require'
    from /home/michael/.rvm/gems/ruby-1.9.3-p429@global/gems/bundler-1.3.5/lib/bundler/runtime.rb:72:in `block (2 levels) in require'
    from /home/michael/.rvm/gems/ruby-1.9.3-p429@global/gems/bundler-1.3.5/lib/bundler/runtime.rb:70:in `each'
    from /home/michael/.rvm/gems/ruby-1.9.3-p429@global/gems/bundler-1.3.5/lib/bundler/runtime.rb:70:in `block in require'
    from /home/michael/.rvm/gems/ruby-1.9.3-p429@global/gems/bundler-1.3.5/lib/bundler/runtime.rb:59:in `each'
    from /home/michael/.rvm/gems/ruby-1.9.3-p429@global/gems/bundler-1.3.5/lib/bundler/runtime.rb:59:in `require'
    from /home/michael/.rvm/gems/ruby-1.9.3-p429@global/gems/bundler-1.3.5/lib/bundler.rb:132:in `require'
    from /home/michael/blogy/config/application.rb:7:in `<top (required)>'
    from /home/michael/.rvm/gems/ruby-1.9.3-p429@anwalt/gems/railties-4.0.0.rc1/lib/rails/commands.rb:78:in `require'
    from /home/michael/.rvm/gems/ruby-1.9.3-p429@anwalt/gems/railties-4.0.0.rc1/lib/rails/commands.rb:78:in `block in <top (required)>'
    from /home/michael/.rvm/gems/ruby-1.9.3-p429@anwalt/gems/railties-4.0.0.rc1/lib/rails/commands.rb:75:in `tap'
    from /home/michael/.rvm/gems/ruby-1.9.3-p429@anwalt/gems/railties-4.0.0.rc1/lib/rails/commands.rb:75:in `<top (required)>'
    from bin/rails:4:in `require'
    from bin/rails:4:in `<main>'

我安装了$ gem install execjs，但仍然遇到同样的错误（我想我必须在某个地方要求它）。无论如何，我的问题是，为什么rails s 命令不能像在本地机器上那样在开箱即用的 VPS 上工作，如果不使用rails s 命令我应该如何启动应用程序一旦我启动了我的真实应用程序（而不是这个虚拟应用程序）。

【问题讨论】：

标签： ruby-on-rails vps

【解决方案1】：

如果您使用的是 debian\ubuntu，请尝试通过 apt-get install nodejs 或 sudo apt-get install nodejs 安装 node.js。

【讨论】：

好的，谢谢，这行得通，服务器在http://0.0.0.0:3000 开始开发，但是当我转到那个地址时，它只是说“Chrome 无法连接。”当我输入ip地址时，它也是一样的。