Production Hadoop Service

Myself and Chris have started working on this project. The idea is for both of us to get up to speed with installing and running a Hadoop cluster in the first instance.

To date we have got one one node running all service and successfully running a job. This was using secure ssh for connection. We have started looking at converting this to using Kerberos before trying to build more nodes. Configuration seems to be working but we have an issue using host principals to ssh.