~/lightning

Lightning Talk: CEL: Hidden Feature of Kyverno Playground

recording made private on YouTubehttps://youtu.be/b_p9Yjtp-bo
Lightningat KyvernoCon NA 2025 · on Monday, 2025-11-10· [kubernetes]
name:Hoon Jo
linkedin:hoonjo
video:https://youtu.be/b_p9Yjtp-bo (made private)
slides:none on file

Shows that Kyverno Playground can be used to validate Kubernetes-native CEL expressions and run another policy-as-code without installing Kyverno itself. Demo pastes a validation policy and a manifest, the run returns a concrete failure: metadata.name required. Playground runs quickly, supports K-native validation and has early mutation support (beta), so tests work without provisioning a cluster or installing admission controllers. Useful for rapid policy iteration and verifying concrete, reproducible failures.

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