Implement Rails Application using single front-end server(Apache) ,back-end server(Passenger) and database-server

We have requirement to d开发者_如何学编程eploy rails application using single front-end server(Apache),two back-end server(Passenger) and two database-server.what will be the configuration? will it effect to change in rails application code base?

You can use Capistrano to deploy to multiple servers at the same time. If you want more specific configuration help please ask one or more specific questions.