Technology · Ebook

Krkn: Chaos Engineering for Kubernetes

by Shriira Press

Krkn — pronounced "kraken" — is a CNCF sandbox chaos and resiliency testing tool that deliberately injects failures into Kubernetes and OpenShift clusters so teams discover how their systems behave under stress before a real outage forces the lesson. This book follows Krkn from first principles to production practice: the assumptions distributed systems are built on, the steady-state, hypothesis, inject, observe method, and Krkn's out-of-cluster engine and plugin model. It tours the full scenario catalog — pod, node, zone, network, resource-hog, and time-skew failures — then covers Cerberus health signalling, Prometheus and Elasticsearch telemetry with SLO validation, the containerized krkn-hub, the krknctl orchestration CLI, and folding chaos into CI/CD as a disciplined resilience practice.

Contents

1. 1Preface
2. 2Chapter 1 — What Krkn Is
3. 3Chapter 2 — The Chaos Engineering Method
4. 4Chapter 3 — Architecture and Components
5. 5Chapter 4 — The Scenario Catalog
6. 6Chapter 5 — Cerberus and Health Signalling
7. 7Chapter 6 — Metrics, SLOs, and Telemetry
8. 8Chapter 7 — krkn-hub and krknctl
9. 9Chapter 8 — Krkn in Practice