September 2021
Beginner to intermediate
145 pages
3h 14m
English
Content preview from OpenShift for Developers, 2nd Edition
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Chapter 3. OpenShift Lab
You need an OpenShift cluster to complete the exercises throughout the rest of the book. This chapter explains how to run OpenShift in a virtual machine (VM) on your computer and introduces the basics of interacting with it. It also suggests other ways to access a cluster if you can’t run OpenShift locally.
OpenShift runs on your laptop, on a brigade of aging computers in the home lab of one of this book’s authors, on premises in data centers, and in public clouds. You can step through the examples in this book on any OpenShift cluster of recent vintage, meaning version 4.7 or later. If you don’t already have access to a cluster, this chapter will show you how to set up an OpenShift VM on your computer.
CodeReady Containers
For the scenarios in this book, we recommend using CodeReady Containers (CRC), an OpenShift 4 cluster that runs on your local computer in a single VM. This cluster provides a minimal environment for developing and testing purposes, including everything you need to get started.
The CRC VM is considered a minimal environment because the monitoring and machine-config operators within the cluster are disabled to conserve resources. Unfortunately, this means that all of the various performance monitoring charts within the Web Console are presented as blank space. And of course, CRC is a single-node “cluster,” so it can only emulate multinode scaling or rolling upgrades.
The CRC cluster uses an internal virtual network on your local machine. ...
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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.