OpenShift Overview

In the previous chapter, we briefly covered Container Runtime and Container Runtime Interface basics, followed by what CRI-O is and how it works. Finally, we installed a Kubernetes cluster with CRI-O as a Container Runtime Interface and ran a few simple commands to verify that Kubernetes was working through CRI-O. 

This chapter is focused on giving a brief description of OpenShift as a Platform as a Service (PaaS) Solution. We will describe Infrastructure as a Service (IaaS) and PaaS clouds. As a part of the PaaS cloud descriptions, we will provide a basic explanation of OpenShift's business value. In this chapter, you will also learn about OpenShift's technical components and available OpenShift variants.

After reading this chapter, you will have learned about the following:

• Cloud technology landscape and the role of PaaS
• OpenShift as an extension of Kubernetes
• OpenShift business value
• OpenShift flavors
• OpenShift architecture