Jenkins vs OpenShift Quick Reference

I found it hard to find an overview about jenkins integration with OpenShift. So decided to do a short write-up of what I know and I've found.

OpenShift v3

• Launching Jenkins slaves off external OpenShift v3 cluster
• Pipelines and workflows plugin to communicate with OpenShift v3
• also here
• Running Jenkins 1.x inside OpenShift v3
• upstream project doc
• blog Jenkins S2I and slave pods
• Blog: Pipelines and running Jenkins 2 inside OpenShift v3 

OpenShift v2 (outdated)

• OpenShift v2 with running jenkins inside
• Deploy to OpenShift v2 from an External Jenkins Instance
• No plugin to run jenkins slaves inside OpenShift v2