Quickstart rails application for openshift.
Create an account at http://openshift.redhat.com/
Create a rails application
rhc app create -a railsapp -t ruby-1.8
Add mysql support to your application
rhc app cartridge add -a railsapp -c mysql-5.1
Add this upstream rails quickstart repo
cd railsapp
git remote add upstream -m master git://github.com/openshift/rails-example.git
git pull -s recursive -X theirs upstream master
Then push the repo upstream
git push
That's it, you can now checkout your application at:
http://railsapp-$yournamespace.rhcloud.com