Technology · Ebook

Kyverno: Policy as Code for Kubernetes

by Shriira Press

Kyverno is a Kubernetes-native policy engine: it validates, mutates, and generates resources according to rules you write as Kubernetes YAML — no new language to learn — so you can enforce security and best practices automatically. This free book teaches it from the ground up: Kubernetes admission control (the foundation), Kyverno's architecture, the policy model (ClusterPolicy/Policy and rules), validation policies for enforcing standards, mutation for applying defaults, generation for provisioning companion resources, reporting and testing for safe audit-first adoption, how it compares to OPA/Gatekeeper and connects to image verification and the supply-chain stack, and operating Kyverno in production (including the webhook failure-mode trade-off). Ten focused chapters with real policies and clear diagrams that turn your standards into automatic, enforced guardrails.

Contents

1. 1Preface
2. 2Chapter 1 — What Kyverno Is
3. 3Chapter 2 — Kubernetes Admission Control
4. 4Chapter 3 — Architecture
5. 5Chapter 4 — The Policy Model
6. 6Chapter 5 — Validation Policies
7. 7Chapter 6 — Mutation Policies
8. 8Chapter 7 — Generation Policies
9. 9Chapter 8 — Reporting and Testing
10. 10Chapter 9 — Ecosystem and Comparison
11. 11Chapter 10 — Operating Kyverno and Putting It Together