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)

Summary

In this chapter, we learned the basic concepts of Kubernetes. We learned that a Kubernetes master has kube-apiserver to handle requests and controller managers are the control center of Kubernetes. These ensure our desired container amount is fulfilled, they control the endpoint to associate pods and services, and they control API access tokens. We also have Kubernetes nodes, which are the workers to host the containers, receive the information from the master, and route the traffic based on the configuration.

We then used minikube to demonstrate basic Kubernetes objects, including pods, ReplicaSets, Deployments, Services, secrets, and ConfigMaps. Finally, we demonstrated how to combine all of the concepts we've learned into our kiosk application.

As we mentioned previously, the data inside containers will disappear when a container is gone. Therefore, volume is extremely...