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 on 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

You can download the example code files for this book from your account at http://www.packtpub.com. If you purchased this book elsewhere, you can visit http://www.packtpub.com/support and register to have the files emailed directly to you.

You can download the code files by following these steps:

1. Log in or register at http://www.packtpub.com.
2. Select the SUPPORT tab.
3. Click on Code Downloads & Errata.
4. Enter the name of the book in the Search box and follow the on-screen instructions.

Once the file is downloaded, please make sure that you unzip or extract the folder using the latest version of:

• WinRAR / 7-Zip for Windows
• Zipeg / iZip / UnRarX for macOS
• 7-Zip / PeaZip for Linux

The code bundle for the book is also hosted on GitHub at https://github.com/PacktPublishing/Mastering-Kubernetes-Third-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://static.packt-cdn.com/downloads/9781839211256_ColorImages.pdf.

Conventions used

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

CodeInText: 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 set in bold:

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 example, in menus or dialog boxes, also appear in the text like this. For example: "Select System info from the Administration panel."

Warnings or important notes appear like this.

Tips and tricks appear like this.