rails. Ubuntu. Why in Windows in the browser it is impossible to display a site that is running in a virtual machine (ubuntu) via localhost:3000?

Question

Ruby on Rails

In the rails virtual machine, the project (rails s) is launched, but in Windows it does not display anything.
What could be the problem?

Answer 1

Actual rails only bind port 3000 to localhost.
Therefore, we fix:
config/boot.rb

ENV['BUNDLE_GEMFILE'] ||= File.expand_path('../../Gemfile', __FILE__)

require 'bundler/setup' # Set up gems listed in the Gemfile.
require 'rails/commands/server'

module Rails
  class Server
    alias :default_options_alias :default_options
    def default_options
      default_options_alias.merge!(:Host => '0.0.0.0')
    end
  end
end

Answer 2

rails s -b 0.0.0.0

Answer 3

Because you need to forward ports from the virtual machine to the local host machine. In Vagrant, this is done with one line in the virtual machine config.

Answer 4

add a setting to your vagrant config (or change an existing one):

config.vm.network "forwarded_port", guest: 3000, guest_ip: "localhost", host: 3000, host_ip: "localhost"