This repository contains the practical labs from the book. Here you have the "what" (YAML manifests and scripts), but to understand the "why" (architecture, design, and DevOps strategy), you need the complete guide.
👇 Get the updated 2026 edition here: 👇
2026 Update: This repository is kept strictly up to date. We have migrated the lab environment from Vagrant to Kind. Now you can spin up a professional cluster on your laptop in less than 2 minutes, consuming less RAM and aligned with modern standards.
| Branch | Distribution | Status |
|---|---|---|
main / v2.x |
Kind (K8s v1.32) | ✅ Recommended (Current Book) |
v1.x |
VirtualBox + Vagrant |
To run the examples without errors, ensure you have the following tools installed:
- Docker
>= 27.2.0 - Kubectl
>= 1.35.0 - Kind
>= v0.30.0(Kubernetes in Docker)
This code accompanies the book chapters, where you will learn to:
- Chapter 2: Spin up a multi-layer K8s cluster locally (no cloud costs).
- Chapter 9: Ingress strategies to expose your apps to the real world.
- Chapter 12: Manage persistent storage (PVCs) without data loss.
Stuck on an exercise? The step-by-step explanation is in the corresponding chapter of the book.
Follow these steps to get your lab ready as described in Chapter 2 of the book.
git clone https://github.com/mmorejon/once-upon-a-time-k8s.git
cd once-upon-a-time-k8sWe have automated the cluster creation. Detailed configurations can be found in cluster/kind-config.yaml.
# Run the creation script from the project root
bash/cluster.sh createIf everything went well, you will see the initialization of the nodes and the control plane:
Creating cluster "book" ...
✓ Ensuring node image (kindest/node:v1.35.0) 🖼
✓ Preparing nodes 📦 📦 📦
✓ Writing configuration 📜
✓ Starting control-plane 🕹️
✓ Installing CNI 🔌
✓ Installing StorageClass 💾
✓ Joining worker nodes 🚜
Set kubectl context to "kind-book"
Ready! Your kubectl context now points to the kind-book cluster. You can now start deploying.
kubectl cluster-info --context kind-bookThis project is alive thanks to the readers. Since Leanpub doesn't have a native comments system, we use this repository to centralize the communication.
What do you want to do today?
| Your goal | Where to go |
|---|---|
| 📣 Leave a review | Go to Discussions / Reviews and Feedback Tell us what you think of the book. |
| 💬 I have a question | Go to Discussions / Q&A Ask about concepts, diagrams or exercises. |
| 💡 Suggest ideas | Go to Discussions / Ideas Propose topics for future chapters. |
| 🐛 Report an error | Open an Issue Only for typos or errors in the code. |
This project is alive thanks to the readers.
- ⭐ Found it useful? Give the repository a star (top right). It helps us reach more engineers.
- 📚 Don't have the book yet?
