that was the topic of today's presentation, and here are the slides: http://www.slideshare.net/markkerzner/automated-hadoop-cluster-construction-on-ec2
However, it was more than that, because we had a lively discussion, almost an unconference, where people asked questions, gave explanations, and described their business cases.
The case in point: we kept talking next to the library for another hour. To an outsider (and there was one police car watching us), it was a veritable Silicon Valley meeting, what with the startup and technology discussions.
See you next time on Richmond, another hands-on session. However, other presenter ideas are welcome.