EC2 on Rails is an Ubuntu Linux server image for Amazon’s EC2 hosting service that’s ready to run a standard Ruby on Rails application with little or no customization. It’s a Ruby on Rails virtual appliance.
When I was doing my homework for deploying to EC2, I came across that and would highly recommend against it! For one thing, it's main committer is out of the picture and have yet to find a good branch with Rails 3 support.
EC2 on Rails is an Ubuntu Linux server image for Amazon’s EC2 hosting service that’s ready to run a standard Ruby on Rails application with little or no customization. It’s a Ruby on Rails virtual appliance.