Introduction

You know Docker. You’ve written Compose files. You’ve built images, connected containers, and mounted volumes.
Now your app needs to survive the real world — scaling, self-healing, zero-downtime deploys, secrets management, and multi-service coordination at scale.
That’s what this book teaches.

What You’ll Learn

By the end of this book, you’ll understand every major Kubernetes concept — from Pods to production security and internals — through hands-on labs, real-world examples, and deliberate “break it” exercises that build genuine debugging intuition.

The stack: Docker · Kubernetes (v1.28+) · Minikube · Helm · Prometheus & Grafana · ArgoCD · GitHub Actions

Prerequisites

You need these tools before starting. Run the check commands — if they pass, you’re good to go.

Installation Guide

# kubectl
curl -LO "https://dl.k8s.io/release/$(curl -L -s https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl"
sudo install -o root -g root -m 0755 kubectl /usr/local/bin/kubectl

# minikube
curl -LO https://storage.googleapis.com/minikube/releases/latest/minikube-linux-amd64
sudo install minikube-linux-amd64 /usr/local/bin/minikube

# helm
curl https://raw.githubusercontent.com/helm/helm/main/scripts/get-helm-3 | bash

# Install kubectl, minikube, and helm
brew install kubectl minikube helm

# Ensure Docker Desktop is installed and running
brew install --cask docker

minikube start --driver=docker

# Chocolatey on Windows
choco install kubernetes-cli minikube kubernetes-helm

curl -LO "https://dl.k8s.io/release/$(curl -L -s https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl"
sudo install -o root -g root -m 0755 kubectl /usr/local/bin/kubectl

curl -LO https://storage.googleapis.com/minikube/releases/latest/minikube-linux-amd64
sudo install minikube-linux-amd64 /usr/local/bin/minikube

curl https://raw.githubusercontent.com/helm/helm/main/scripts/get-helm-3 | bash

Getting the Lab Files

Pre-built manifest YAML files for all hands-on exercises are available in the src/manifests/ directory, organized by chapter.

You can apply manifests directly from this directory during labs instead of manually copy-pasting code blocks:

# Example: Apply a manifest directly
kubectl apply -f src/manifests/ch03-pods/

How to Use This Book

Each chapter is designed to take 30–60 minutes and ends with a hands-on lab. The pattern is always:

Concept (short) → Example (immediate) → Try it → Break it

• Read linearly if you’re new to Kubernetes.
• Jump around if you have experience — every section is self-contained.
• Do the labs. Reading about K8s is like reading about swimming. You have to get in the water.

🔥 The “Break It!” philosophy: The fastest way to understand a system is to watch it fail. Every chapter has intentional breakage exercises. Don’t skip them.

Chapter Dependency Map

graph LR
    CH1["Ch 1: Why K8s"] --> CH2["Ch 2: kubectl"]
    CH2 --> CH3["Ch 3: Pods"]
    CH3 --> CH4["Ch 4: Workloads"]
    CH3 --> CH5["Ch 5: Services"]
    CH5 --> CH6["Ch 6: Ingress"]
    CH3 --> CH7["Ch 7: Config"]
    CH3 --> CH8["Ch 8: Storage"]
    CH4 --> CH10["Ch 10: Health"]
    CH4 --> CH11["Ch 11: Resources"]
    CH4 --> CH12["Ch 12: Helm"]
    CH5 --> CH13["Ch 13: Observability"]
    CH3 --> CH14["Ch 14: Scheduling"]
    CH9["Ch 9: RBAC"] --> CH15["Ch 15: Security"]
    CH12 --> CH16["Ch 16: CI/CD"]
    CH3 --> CH17["Ch 17: Internals"]
    CH3 --> CH18["Ch 18: Troubleshooting"]

Arrows indicate prerequisite relationships. If you’re experienced with Kubernetes, use this graph to skip chapters you already know while ensuring you don’t miss a dependency.

Chapter Roadmap

Ready? Let’s go to Chapter 1. →