Book Image

50 Kubernetes Concepts Every DevOps Engineer Should Know

By : Michael Levan
Book Image

50 Kubernetes Concepts Every DevOps Engineer Should Know

By: Michael Levan

Overview of this book

Kubernetes is a trending topic among engineers, CTOs, CIOs, and other technically sound professionals. Due to its proliferation and importance for all cloud technologies, DevOps engineers nowadays need a solid grasp of key Kubernetes concepts to help their organization thrive. This book equips you with all the requisite information about how Kubernetes works and how to use it for the best results. You’ll learn everything from why cloud native is important to implementing Kubernetes clusters to deploying applications in production. This book takes you on a learning journey, starting from what cloud native is and how to get started with Kubernetes in the cloud, on-premises, and PaaS environments such as OpenShift. Next, you’ll learn about deploying applications in many ways, including Deployment specs, Ingress Specs, and StatefulSet specs. Finally, you’ll be comfortable working with Kubernetes monitoring, observability, and security. Each chapter of 50 Kubernetes Concepts Every DevOps Engineer Should Know is built upon the previous chapter, ensuring that you develop practical skills as you work through the code examples in GitHub, allowing you to follow along while giving you practical knowledge. By the end of this book, you’ll be able to implement Kubernetes in any environment, whether it’s an existing environment, a greenfield environment, or your very own lab running in the cloud or your home.
Table of Contents (14 chapters)
1
Part 1: First 20 Kubernetes Concepts – In and Out of the Cloud
6
Part 2: Next 15 Kubernetes Concepts – Application Strategy and Deployments
9
Part 3: Final 15 Kubernetes Concepts – Security and Monitoring

Getting to know Helm charts and Kustomize

When you’re working with Kubernetes, unless it’s a dev environment for your testing, there’s an extremely slim chance that you only have one Kubernetes Manifest. You most likely have multiple for various resources such as Deployments, Services, DaemonSets, ConfigMaps, Ingresses, and a ton of the other Kubernetes resources out there. Utilizing almost every single Kubernetes platform or tool that’s deployed to your cluster uses a Kubernetes Manifest.

With all those Kubernetes Manifests, there are a ton of different values and parameters that you need to pass at runtime to make it all work. In this section, you’ll learn about two different methods of managing Kubernetes Manifests – Helm charts and Kustomize.

Why think about deployment methods for manifests?

Before diving into different deployment methods, it makes sense to understand why you’d want to consider deployment methods other than...