OpenShift Vs Kubernetes¶

Introduction¶

OpenShift is Kubernetes packaged with enterprise platform features such as integrated authentication, projects, Routes, Operators, image builds, monitoring, and stricter security defaults. The fastest way to learn the architecture is to inspect cluster operators and the namespaces that run platform components.

Core Concepts¶

OpenShift builds on Kubernetes with projects, Routes, ImageStreams, Builds, Operators, SCCs, and integrated platform administration.

Practical Examples¶

oc get clusteroperators

oc get nodes

oc get pods -n openshift-apiserver

oc get pods -n openshift-ingress

Example output:

NAME             VERSION   AVAILABLE   PROGRESSING   DEGRADED   SINCE
authentication   4.15.12   True        False         False      8d
ingress          4.15.12   True        False         False      8d

Verification¶

oc get co

oc get clusterversion

oc get namespaces | grep openshift

Common Mistakes¶

• Looking only at the final error and ignoring events.
• Checking the wrong project with oc.
• Changing several objects at once before confirming the current state.

Quick Checklist¶

• Confirm the active project.
• Inspect the exact object named in the error.
• Read recent events.
• Apply one focused fix.
• Verify status after the change.

Related Guides¶

• Openshift Cli oc Explained
• Openshift Projects Vs Namespaces

Summary¶

OpenShift Vs Kubernetes is best understood through the OpenShift objects involved and the oc commands that verify their current state.