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)

The life cycle of a container

Using containers isn't as intuitive as most of the tools that we're used to working with, so we'll need to change the way we work. In this section, we'll go through how to use Docker so that we're able to benefit from containers.

The basics of Docker

When docker run alpine ls is executed, Docker carries out the following steps behind the scenes:

  1. It finds the alpine image locally. If this is not found, Docker will try to locate and pull it from the public Docker registry to the local image storage.
  2. It extracts the image and creates a container accordingly.
  3. It executes the entry point defined in the image with commands, which are the arguments after the image name. In this...