Book Image

DevOps with Kubernetes - Second Edition

By : Hideto Saito, Hui-Chuan Chloe Lee, Cheng-Yang Wu
Book Image

DevOps with Kubernetes - Second Edition

By: Hideto Saito, Hui-Chuan Chloe Lee, Cheng-Yang Wu

Overview of this book

Kubernetes has been widely adopted across public clouds and on-premise data centers. As we're living in an era of microservices, knowing how to use and manage Kubernetes is an essential skill for everyone in the IT industry. This book is a guide to everything you need to know about Kubernetes—from simply deploying a container to administrating Kubernetes clusters wisely. You'll learn about DevOps fundamentals, as well as deploying a monolithic application as microservices and using Kubernetes to orchestrate them. You will then gain an insight into the Kubernetes network, extensions, authentication and authorization. With the DevOps spirit in mind, you'll learn how to allocate resources to your application and prepare to scale them efficiently. Knowing the status and activity of the application and clusters is crucial, so we’ll learn about monitoring and logging in Kubernetes. Having an improved ability to observe your services means that you will be able to build a continuous delivery pipeline with confidence. At the end of the book, you'll learn how to run managed Kubernetes services on three top cloud providers: Google Cloud Platform, Amazon Web Services, and Microsoft Azure.
Table of Contents (14 chapters)

Getting started with Kubernetes

In this section, we'll learn how to set up a single-node cluster. Then, we'll learn how to interact with Kubernetes via its command-line tool: kubectl. We'll go through all of the important Kubernetes API objects and their expressions in YAML format, which is the input to kubectl. We'll then see how kubectl sends requests to the API server to create the desired objects accordingly.

Preparing the environment

Firstly, kubectl has to be installed. In major Linux distributions (such as Ubuntu or CentOS), you can just search for and install the package named kubectl via the package manager. In macOS, we can choose to use Homebrew (https://brew.sh/) to install it. Homebrew is...