Book Image

The Kubernetes Workshop

By : Zachary Arnold, Sahil Dua, Wei Huang, Faisal Masood, Mélony Qin, Mohammed Abu Taleb
Book Image

The Kubernetes Workshop

By: Zachary Arnold, Sahil Dua, Wei Huang, Faisal Masood, Mélony Qin, Mohammed Abu Taleb

Overview of this book

Thanks to its extensive support for managing hundreds of containers that run cloud-native applications, Kubernetes is the most popular open source container orchestration platform that makes cluster management easy. This workshop adopts a practical approach to get you acquainted with the Kubernetes environment and its applications. Starting with an introduction to the fundamentals of Kubernetes, you’ll install and set up your Kubernetes environment. You’ll understand how to write YAML files and deploy your first simple web application container using Pod. You’ll then assign human-friendly names to Pods, explore various Kubernetes entities and functions, and discover when to use them. As you work through the chapters, this Kubernetes book will show you how you can make full-scale use of Kubernetes by applying a variety of techniques for designing components and deploying clusters. You’ll also get to grips with security policies for limiting access to certain functions inside the cluster. Toward the end of the book, you’ll get a rundown of Kubernetes advanced features for building your own controller and upgrading to a Kubernetes cluster without downtime. By the end of this workshop, you’ll be able to manage containers and run cloud-based applications efficiently using Kubernetes.
Table of Contents (20 chapters)
Preface

Summary

In this chapter, we have seen the different ways that Kubernetes provides to associate environment-specific data with our applications running as containers.

Kubernetes provides ways to store sensitive data as Secrets and normal application data as ConfigMaps. We have also seen how to create ConfigMaps and Secrets and associate them with our containers via CLI. Running everything via the command line will facilitate the automation of these steps and improve the overall agility of your application.

Associating data with containers enables us to use the same container across different environments in our IT systems (for example, in test and production). Using the same container across different environments provides a way for secure and trusted code promotion techniques for IT processes. Each team can use a container as a unit of deployment and sign the container so that other parties can trust the container. This also provides a trusted way of distributing code not...