Apache Whirr is a set of libraries for running cloud services.
You can also use Whirr as a command line tool for deploying clusters.
Download a release of Whirr from a nearby mirror.
Find out more about Whirr at our wiki.
Have you got a suggestion for improving Whirr? It's easy to get involved.
The code that would become Whirr started out in 2007 as some bash scripts in Apache Hadoop for running Hadoop clusters on EC2. Later the scripts were ported to Python for extra features (such as EBS support) and a wider range of cloud providers. These Python scripts are no longer supported, but can be found in the 0.5.0 release and the contrib-python SVN branch.
In May 2010 the Apache Whirr Incubator project was started to give a home to the existing work that had been done, but also to create a Java version using jclouds as the cloud provisioning library. jclouds supports many providers and has a very rich API for running code on instances, so it provides a very solid foundation for building Whirr on.
In August 2011 Whirr became an Apache Top-Level Project.