No application running on cloud9s host, hello_world rails-tutorial app



Hello everyone!

Pleasure to be here.

I started the rails-tutorial, hello_world app, which is just setting up the gem file and running the server.
I cannot get anything rendered on the page that cloud9 defaults to. Gems are per the tutorials request, exact gems, no >= conditions. I am new to cloud IDE’s. I have done bundle update, rechecked the gems, done bundle install. Made sure the naming is correct, so cloud9 knows what to render. To no avail.
Any ideas?


Please share your Gemfile code as well as the command you are using to run the server.

source ''

gem 'rails',        '5.0.1'
gem 'puma',         '3.4.0'
gem 'sass-rails',   '5.0.6'
gem 'uglifier',     '3.0.0'
gem 'coffee-rails', '4.2.1'
gem 'jquery-rails', '4.1.1'
gem 'turbolinks',   '5.0.1'
gem 'jbuilder',     '2.4.1'

group :development, :test do
  gem 'sqlite3', '1.3.12'
  gem 'byebug',  '9.0.0', platform: :mri

group :development do
  gem 'web-console',           '3.1.1'
  gem 'listen',                '3.0.8'
  gem 'spring',                '1.7.2'
  gem 'spring-watcher-listen', '2.0.0'

group :production do
  gem 'pg', '0.18.4'

This is the gemfile. Command used to run server is ‘rails server’ Anything looking suspicious?


You should always run your Rails server with specific C9 port and binding:

rails server -p $PORT -b $IP


Yup I had missed that, I am used to running rails server locally, missed the port and ip command. Thanks a lot.


thanks! I’ve encountered the same problem. It’s all good now!