Kubernetes · medium · solved in-browser (no VM needed) · 3 tiered hints
Write /home/player/ingress.yaml: an Ingress named web routing host app.example.com path / to service web on port 80. (No cluster here — authored manifest, graded structurally.)
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Open the challenge and an in-page editor appears — write your answer and tmpfs.tech grades it server-side against the same checks a real box would run. No VM, no install, no signup needed to try.
Author Pod, Deployment and Service manifests and reason about scheduling.
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Is it free? Yes — play as a guest, no signup required to start.
Do I need to install anything? No. Everything runs in your browser.
How is it graded? Automatically and deterministically — your work is checked against the exact rules the live box would apply.