To get the most out of this book

To follow the examples in each chapter, you need a recent version of Docker and Kubernetes installed onto your machine, ideally Kubernetes 1.18. If your operating system is Windows 10 Professional, you can enable hypervisor mode; otherwise, you will need to install VirtualBox and use a Linux guest OS. If you use macOS then you’re good to go.

Download the example code files

The code bundle for the book is hosted on GitHub at https://github.com/PacktPublishing/Mastering-Kubernetes-4th-Edition. We also have other code bundles from our rich catalog of books and videos available at https://github.com/PacktPublishing/. Check them out!

Download the color images

We also provide a PDF file that has color images of the screenshots/diagrams used in this book. You can download it here: https://packt.link/gXMql.

Conventions used

There are a number of text conventions used throughout this book.

CodeInText: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. For example: “If you chose HyperKit instead of VirtualBox, you need to add the flag --vm-driver=hyperkit when starting the cluster.”

A block of code is set as follows:

apiVersion: "etcd.database.coreos.com/v1beta2"
kind: "EtcdCluster"
metadata:
  name: "example-etcd-cluster"
spec:
  size: 3
  version: "3.2.13"

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are highlighted:

apiVersion: "etcd.database.coreos.com/v1beta2"
kind: "EtcdCluster"
metadata:
  name: "example-etcd-cluster"
spec:
  size: 3
  version: "3.2.13"

Any command-line input or output is written as follows:

$ k get pods
NAME                   READY   STATUS    RESTARTS   AGE
echo-855975f9c-r6kj8   1/1     Running   0          2m11s

Bold: Indicates a new term, an important word, or words that you see on the screen. For instance, words in menus or dialog boxes appear in the text like this. For example: “Select System info from the Administration panel.”