In this episode, with @HenrikRexed we dive deep into the Kubernetes Admission Controller, exploring the latest enhancements introduced in K8s v1.33 and how they impact cluster security, policy enforcement, and observability.
✨ What You’ll Learn:
- What is the Kubernetes Admission Controller and how it works
- The role of mutation, schema validation, and policy validation
- Introduction to CEL (Common Expression Language) and how it powers declarative policies
- How to use new CRDs like ValidatingAdmissionPolicy and MutatingAdmissionPolicy
- Real-world examples of mutation and validation policies
- How to observe policy violations using audit annotations and metrics
- Why CEL is becoming the standard for cloud-native policy management
🚀 Whether you're using OPA Gatekeeper, Kyverno, or just exploring native Kubernetes features, this episode will help you understand how to secure and observe your workloads more effectively.
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📖 Chapters 📖
00:00 Intro
00:17 Welcome
01:52 Admission Controller
06:49 The CRDs
11:52 CEL
15:04 Observability
18:04 Conclusion
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🔗 Additional Links
Dynatrace Trial
Github repo for the tutorial
ValidatinAdmissionPolicy
MutatingAdmissionPolicy
CEL
Blog Is It Observable
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