Introduction to Kubernetes Security
Welcome to K8s Security Guide, a comprehensive resource created by Itai Ganot to provide in-depth guides and best practices for securing Kubernetes environments.
This site is dedicated to helping developers, DevOps engineers, and Kubernetes administrators implement robust security measures aligned with the principles of the Certified Kubernetes Security Specialist (CKS) certification and beyond.
Topics relevant for the CKS certification exam are marked accordingly throughout the documentation.
- Current Kubernetes Version: 1.36
- CKS Exam Last Updated: October 15, 2024
The site is actively being developed. More CKS-related topics are being added regularly. Content is kept up to date with the latest Kubernetes versions and security tools based on the CKS curriculum.
Documentation Structure
The K8s Security Guide is organized into four main categories:
Security Fundamentals
Core security principles including authentication, authorization, RBAC, and the Kubernetes security model. Essential foundation for understanding how Kubernetes security works.
Attack Vectors
Common security risks, real-world Kubernetes exploits, container escapes, and privilege escalation techniques. Understanding threats is the first step to defending against them.
Best Practices
Production-grade security configurations for hardening Kubernetes clusters, workloads, and network configurations. Covers all four CKS exam domains:
- Cluster Setup & Hardening
- System Hardening
- Minimize Microservice Vulnerabilities
- Supply Chain Security
Security Tools
Open-source tools for vulnerability scanning, runtime security, policy enforcement, and compliance auditing. Includes tools like Trivy, Falco, kube-bench, and more.
Who Should Use This Guide?
| Audience | Use Case |
|---|---|
| DevOps Engineers | Implementing Kubernetes security in production cloud-native environments |
| Security Engineers | Hardening clusters and implementing security policies |
| Developers | Building secure containerized applications |
| CKS Candidates | Preparing for the Certified Kubernetes Security Specialist exam |
How to Navigate
- Start with Fundamentals to build a strong security foundation
- Explore Attack Vectors to understand common Kubernetes threats
- Follow Best Practices to implement security hardening techniques
- Use Security Tools to enhance your security posture
- Browse Recommended Books for deeper learning resources
- Use the Search feature (top right) to find specific security topics
Preparing for the CKS Exam?
Dedicated CKS prep resources, separate from the documentation:
- CKS Exam Guide — format, cost, retake policy, voucher tips
- CKS Study Plan — 30, 60, and 90-day roadmaps linked to articles on this site
- CKS Cheat Sheet — printable one-page reference for kubectl, NetworkPolicy, RBAC, seccomp, and more
- CKS vs CKA vs CKAD — comparison of the three CNCF Kubernetes certifications
- Practice Questions — multiple-choice CKS practice across all six domains