Kubernetes for Python developers - 2024

"Kubernetes for Python Developers" is the essential guide for developers new to Kubernetes, focusing on a step-by-step approach from application creation to deployment. Written with beginners in mind, it demystifies Kubernetes through a developer’s lens, ensuring concepts are accessible and practical. The book includes 30+ exercises with solutions and numerous examples to solidify understanding. Whether you’re looking to grasp container orchestration or deploy your Python applications with confidence, this book provides the knowledge and tools needed to navigate the Kubernetes ecosystem effectively.

Is this the right book for you
This book aims to bridge the gap between Python development and Kubernetes operations, making it an ideal read for anyone in the software development lifecycle seeking to adopt Kubernetes for Python applications. This includes python developers, beginners to Kubernetes, students and educators.Whom is this book NOT for
If you already know Kubernetes and are using it in some capacity, then you might not find any value in this book. Also, if you don’t have much of a technical background(don’t know how to work with Python, no idea about containers), then this book won’t be a good fit for you.

About me
I’m a full stack developer with more than 2 decades of experience working with enterprise customers. I’ve been dabbling with Kubernetes since 2018, when there were comparitively lesser resources to tame the Kubernetes beast. I always wanted to read a book to bridge the knowledge gap for a developer who knows a bit of ops and wants to dip their toes in the Kubernetes waters and figured I’ll write one for those who are on the same boat.

Is the book ideal only for Python developers
IThe book has been written using a Python Flask application as an example. It is quite easy to fit in your Node.js/Java/PHP/Rails/Golang/Rust stack if you understand the concepts explained in the book.

Contents
1. The meta stuff
The audience of the book
Why developers should learn Kubernetes
What we will build
What prerequisites you need
2. Containers recap
Intro to containers
How containers work
Container networking
Isolating processes
Docker compose
Docker registry
Other container engines
3. Kubernetes 101
Why Kubernetes
How Kubernetes works
Components of a Kubernetes cluster
Setting up your first cluster
4. Pods 101
Kubectl, kubeconfig
How to interact with your cluster
Pods, events
working with pods
5. Pods 201
Getting inside a pod
Pod probes
Namespaces
Pod networking
Deploying your first application
6. Beyond pods
Replicasets
Deployments
Services
Full fledged Flask app with Redis
7. Going a notch further
Config maps
Secrets
Init containers
Storing persistent data
8. A more robust setup
Stateful sets
Service accounts and RBAC
Ingress
annotations
9. Closing thoughts
Setting up a CD pipeline in Github
Github actions
Where to go from here
Appendix A: Troubleshooting common scenarios
Pod not coming up
Correct labels
Exposing ports
Resource constraints
Unauthorized
Appendix B: Solutions to exercises