Rails 4.2 development server can't be reached Ubuntu 14.04

Question

I've installed Rails 4.2 on a Ubuntu 14.04 VM to act as a development environment. When I start the rails server with rails s the server says it starts and is listening for connections on http://localhost:3000

If I try to access <IP>:3000 , no page is displayed and nothing hits the logs of the rails server. If I execute curl localhost:3000 from within the machine, I get the html of my home page.

If I execute rails s -b 0.0.0.0 , I can access the server by its IP address.

On my MacBook Pro, running rails s (listening to localhost ) allows me to access the rails app via localhost:3000 or <IP>:3000 .

• Ubuntu 14.04.1
• Rails 4.2

Answer 1

http://edgeguides.rubyonrails.org/4_2_release_notes.html#default-host-for-rails-server

Rails 4.2 release notes say, that now default host for rails server is localhost.

So if you want to access app from another machine, use

rails server -b 0.0.0.0

Probably your Macbook Pro uses older Rails version, with old behavior