June 2021
Intermediate to advanced
271 pages
7h 19m
English
Content preview from Hybrid Cloud Apps with OpenShift and Kubernetes
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Chapter 2. Getting Started with OpenShift and Kubernetes
In this chapter, we cover a variety of topics that present a foundational understanding of Kubernetes and OpenShift. We begin with an overview of the Kubernetes architecture and then describe several deployment options that will enable you to get both a basic Kubernetes environment and an OpenShift environment up and running. Next, we give an introduction to the command-line tools kubectl and oc, which are used for interacting with Kubernetes and OpenShift respectively. We then introduce a short review of the fundamental Kubernetes concepts of pods, deployments, and service accounts. In the second half of this chapter, we present several enhancement concepts that OpenShift provides over traditional Kubernetes. We then conclude this chapter with a discussion of more advanced topics that are often used when running Kubernetes or OpenShift in production.
Kubernetes Architecture
The Kubernetes architecture at a high level is relatively straightforward. It is composed of a master node and a set of worker nodes. The nodes can be either physical servers or VMs. Users of the Kubernetes environment interact with the master node using either a CLI (kubectl), an API, or a GUI. The master node is responsible for scheduling work across the worker nodes. In Kubernetes, the unit of work that is scheduled is called a pod, and a pod can hold one or more containers. The primary components that exist on the master node are the kube-apiserver ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.