Show HN: KubeKosh – Self-Hosted Kubernetes Playground in a Docker Container

Category: devtools

Tags: kubernetes, self-hosted, learning-platform

Score: 7.0/10 (Innovation: 6, Technical: 7, Documentation: 8, Utility: 7)

KubeKosh bundles a real K3s cluster, browser-based terminal, and automated scenario validation into a single Docker container for offline Kubernetes learning. It provides CKA/CKAD/CKS-aligned task and MCQ scenarios with exam mode and progress persistence, making it a practical self-hosted lab without requiring a cloud account or local cluster.

Target audience: backend devs, devops, platform engineers

Repository: https://github.com/zeborg/kubekosh · JavaScript · Apache-2.0 · 188 stars

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