Rails 4.0: ActionController::RoutingError - ruby-on-rails

Question

When I'm starting serven in production mode, i got this page:
"The page you were looking for doesn't exist. You may have mistyped the address or the page may have moved."
App works normally in development mode.
Here is my logs:
I, [2013-04-22T11:27:17.618777 #15685] INFO -- : Started GET "/" for 127.0.0.1 at 2013-04-22 11:27:17 +0400
F, [2013-04-22T11:27:17.620365 #15685] FATAL -- :
ActionController::RoutingError (No route matches [GET] "/"):
actionpack (4.0.0.beta1) lib/action_dispatch/middleware/debug_exceptions.rb:21:in `call'
actionpack (4.0.0.beta1) lib/action_dispatch/middleware/show_exceptions.rb:30:in `call'
railties (4.0.0.beta1) lib/rails/rack/logger.rb:38:in `call_app'
railties (4.0.0.beta1) lib/rails/rack/logger.rb:21:in `block in call'
activesupport (4.0.0.beta1) lib/active_support/tagged_logging.rb:67:in `block in tagged'
activesupport (4.0.0.beta1) lib/active_support/tagged_logging.rb:25:in `tagged'
activesupport (4.0.0.beta1) lib/active_support/tagged_logging.rb:67:in `tagged'
railties (4.0.0.beta1) lib/rails/rack/logger.rb:21:in `call'
actionpack (4.0.0.beta1) lib/action_dispatch/middleware/request_id.rb:21:in `call'
rack (1.5.2) lib/rack/methodoverride.rb:21:in `call'
rack (1.5.2) lib/rack/runtime.rb:17:in `call'
activesupport (4.0.0.beta1) lib/active_support/cache/strategy/local_cache.rb:72:in `call'
actionpack (4.0.0.beta1) lib/action_dispatch/middleware/static.rb:64:in `call'
railties (4.0.0.beta1) lib/rails/engine.rb:510:in `call'
railties (4.0.0.beta1) lib/rails/application.rb:96:in `call'
rack (1.5.2) lib/rack/lock.rb:17:in `call'
rack (1.5.2) lib/rack/content_length.rb:14:in `call'
rack (1.5.2) lib/rack/handler/webrick.rb:60:in `service'
/home/u164/.rvm/rubies/ruby-1.9.3-p392/lib/ruby/1.9.1/webrick/httpserver.rb:138:in `service'
/home/u164/.rvm/rubies/ruby-1.9.3-p392/lib/ruby/1.9.1/webrick/httpserver.rb:94:in `run'
/home/u164/.rvm/rubies/ruby-1.9.3-p392/lib/ruby/1.9.1/webrick/server.rb:191:in `block in start_thread'
My Gemfile:
ruby "1.9.3"
source 'https://rubygems.org'
# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '4.0.0.beta1'
gem 'execjs'
gem 'therubyracer'
#gem 'sqlite3'
gem 'pg'
# Gems used only for assets and not required
# in production environments by default.
group :assets do
gem 'sass-rails', '~> 4.0.0.beta1'
gem 'coffee-rails', '~> 4.0.0.beta1'
# See https://github.com/sstephenson/execjs#readme for more supported runtimes
# gem 'therubyracer', platforms: :ruby
gem 'uglifier', '>= 1.0.3'
end
gem 'jquery-rails'
# Turbolinks makes following links in your web application faster. Read more: https://github.com/rails/turbolinks
gem 'turbolinks'
# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
gem 'jbuilder', '~> 1.0.1'

Answer 1

In Rails 4.0.0 when deploying to production, you will need to generate/create an index page which should be located in public/index.html.
I have successfully deployed on Amazon EC2 (AWS) using this fix.
For example:
$ rails generate controller welcome index