Book Image

The Kubernetes Book

By : Nigel Poulton, Pushkar Joglekar
Book Image

The Kubernetes Book

By: Nigel Poulton, Pushkar Joglekar

Overview of this book

Kubernetes is the leading orchestrator of cloud-native apps. With knowledge of how to work with Kubernetes, you can easily deploy and manage applications on the cloud or in your on-premises data center. The book begins by introducing you to Kubernetes and showing you how to install it. You’ll learn how to use Kubernetes Services and bring stable and reliable networking to apps that are deployed on Kubernetes. You'll delve deep into the powerful storage subsystem of Kubernetes and learn how to leverage the variety of external storage backends in your applications. As the book progresses, it shows you how to use features such as DaemonSets, Helm, and RBAC to enhance your Kubernetes applications. You'll explore the six categories of identifying vulnerabilities and look at a few ways to prevent and mitigate them. You'll also look at ways to secure the software delivery pipeline by discussing some image-related best practices. The book ends by sharing with you some resources that’ll help take your Kubernetes knowledge to the next level. By the end of the book, you’ll have the confidence and skills to leverage all the features of Kubernetes to develop scalable applications.
Table of Contents (23 chapters)
Free Chapter
1
Chapter 1
3
Chapter 2
5
Chapter 3
7
Chapter 4
9
Chapter 5
11
Chapter 6
13
Chapter 7
15
Chapter 8
17
Chapter 9
19
Chapter 10
21
Chapter 11

Kubernetes Background

Kubernetes is an orchestrator. For the most part, it orchestrates containerized cloud-native apps. However, there are projects that enable it to orchestrate things such as virtual machines and functions (serverless workloads). All of this adds up to Kubernetes being the de facto orchestrator for cloud-native applications.

That's great, but what do we mean when use terms like orchestrator and cloud-native?

An orchestrator is a backend system that deploys and manages applications. This means it helps you deploy your application, scale it up and down, perform updates and rollbacks, and more. If it's a good orchestrator, it does this without you having to supervise.

A cloud-native application is a business application that is made from a set of small independent services that communicate and form a useful application. As the name suggests, this design allows it to cope with cloud-like demands and run natively on cloud platforms. As an example, cloud...