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Episode 06 of "OpenShift in a nutshell" presentations in Iran OpenStack community group
This episode is about core concepts in OpenShift.
Part 2 includes concepts of Users, Projects, Builds and Image streams
At the end of presentation you can find a link that helps you to setup OpenShift in your local system ( this setup is not a enterprise setup and it's only for creating a small test environment ).
I hope you will find it useful.