Work with OpenShift a lot and I really like it. Very similar to Kubernetes but solves a lot of business problems including providing:

  * security   
  * source to image builds     
  * a well designed ui for monitoring and configuration   
  * advanced routing techniques such as a/b deployments ect  
  * liveness probes, readiness probes and other needs  
  * metrics via a prometheus plugin

I tried openshift 3 when it was new and received apologies from RH employees on IRC because it was so buggy.

It felt like one guy saw kubernetes and decided to make a GUI for it, hence openshift. Felt like it was a true open source project, not bad, but not production ready for end users yet. This was early 2018.

We have been using it for a few years. Its a complete solution for deploying apps (with logging, monitoring, rolling deployments, etc) and it has a pretty nice UI. Once you have it set up its as easy to use as Heroku. Can't really imagine a better solution for medium sized projects.

Openshift is Kubernetes...with a few more things bolted on. Currently running it at scale at Cisco and pretty happy with it and support from RedHat.

Openshift is a fork of Kubernetes...with a few more things bolted on. I think the distinction is important. Development occurs in a separate repo and the upstream Kubernetes code is backported into that repo. Similar to how Red Hat handles RHEL.

OpenShift is an implementation of the Kubernetes spec

I know. But Kubernetes doesn't require 16 GB of ram on the master node to run, for example. There's a ton of differences between Kubernetes and OpenShift, hence why I'm asking. The fact that OpenShift is a superset of Kubernetes precisely means there's differences.