Apache Whirr is a set of libraries for running cloud services.
    Whirr provides:
    
      - A cloud-neutral way to run services. You don't have to worry about the idiosyncrasies of
      each provider.
 
      - A common service API. The details of provisioning are particular to the service.
 
      - Smart defaults for services. You can get a properly configured system running quickly,
      while still being able to override settings as needed.
 
    
    You can also use Whirr as a command line tool for deploying clusters.
    
    Start with Whirr in 5 Minutes
    or the  
    Quick Start Guide.
    There is also an 
    FAQ which covers how to achieve common tasks with Whirr, and a 
    configuration guide for reference.