At the time of writing this book, OpenShift Container Platform (OCP) 3.9 has been just released. OCP 3.9 is significantly different from the other releases, in that the earlier versions of OpenShift were one step behind a version of Kubernetes, meaning that OpenShift 3.5 was using Kubernetes 1.6, and OpenShift 3.7 was using Kubernetes 1.8. This is the main reason why Red Hat skipped version 3.8 and jumped right to 3.9, syncing up with Kubernetes 1.9. This does not mean that OpenShift 3.8 has been renamed 3.9, in fact, it is quite the opposite. OpenShift 3.9 includes all the new features from both 3.8 and 3.9, which includes the following:
- CRI-O: A lightweight Container Runtime Interface (CRI) that natively works with Kubernetes. It is designed to bring additional features into Kubernetes, such as the following:
- Enhanced security
- Better scalability...