<p>I'm searching for a main difference between OpenShift V3 and V2.
Is OpenShift V2 working like this?: <a href="https://www.openshift.com/walkthrough/how-it-works" rel="nofollow">https://www.openshift.com/walkthrough/how-it-works</a>
And how are Docker and Kubernetes working in V3?</p>

<p>Can someone give me a clear explanation about the build-up of OpenShift V2 and V3</p>

<p>This is a rather broadly asked question, so I will (and can) answer only in a rather broad manner.</p>

<p>There are a lot of key concepts that have changed. These are the most important ones and you'll need some time to get into it, but they are a big improvement to OpenShift v2.:</p>

<ul>
<li>Cartridges vs. Docker Containers  </li>
<li>Gears vs. Kubernetes Pods </li>
<li>Broker vs. Kubernetes Master </li>
<li>Release of <a href="https://access.redhat.com/articles/rhel-atomic-getting-started" rel="noreferrer">Red Hat Enterprise Linux Atomic
Host</a></li>
</ul>

<p>When you'll study the links below you will understand, that (really exaggerated) OpenShift v3 has basically nothing to do with v2 besides the name, the logo and the PaaS focus. But it's still a great tool and IMO has set new standards in the PaaS-world. (No, I don't work for RedHat ;)</p>

<p>What's New:</p>

<p><a href="https://docs.openshift.com/enterprise/3.0/whats_new/overview.html" rel="noreferrer">https://docs.openshift.com/enterprise/3.0/whats_new/overview.html</a>
<a href="https://docs.openshift.com/enterprise/3.0/architecture/overview.html" rel="noreferrer">https://docs.openshift.com/enterprise/3.0/architecture/overview.html</a></p>

<p>For starters; Docker &amp; Kubernetes:</p>

<p><a href="https://blog.openshift.com/openshift-v3-platform-combines-docker-kubernetes-atomic-and-more/" rel="noreferrer">https://blog.openshift.com/openshift-v3-platform-combines-docker-kubernetes-atomic-and-more/</a></p>

<p>Pretty new:</p>

<p><a href="https://access.redhat.com/articles/1353773" rel="noreferrer">Creating a Kubernetes Cluster to Run Docker Formatted Container Images</a></p>

<p>EDIT 2016_06_30:
Sorry for necro'ing this old post, but I wanted to add this quick, fun and <em>very</em> informative video about Kubernetes: <a href="https://youtu.be/4ht22ReBjno" rel="noreferrer">https://youtu.be/4ht22ReBjno</a></p>
