Test Learn Kubernetes in a simulated environment.

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Learning Kubernetes doesn’t have to be hard.

Local setup is a hassle. Cloud is expensive. Practice in your browser instead

Instant Loading

Load the page and you're good to go: no waiting, no setup

Stable & Local

Everything runs locally: stay in the flow, no interruptions

Affordable

No cloud costs to cover: learn without breaking the bank

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What is KubeMastery?

What it does and what it does not.

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What it is

A Kubernetes flight simulator

Pilots and astronauts train in simulators before the real thing. This is the same idea for Kubernetes. A lightweight JavaScript implementation of core Kubernetes behavior with a built-in terminal.

  • Practice safely before touching real clusters
  • Short lessons and tasks in your browser
  • Fast feedback, no setup, no waiting
Training simulator illustration
What it is not

Not a remote lab

No cloud cluster to boot. No hidden infrastructure bill. It is a simulator.

  • Not a WASM cluster, not a remote cloud cluster
  • It trades the real world's chaos for a clean, controlled environment
  • Not a big-team job. A one-man project, built with care. ❤️
Training simulator illustration

It feels real. Here is why.

Not magic. Not guesswork. Just careful testing.

Tested against real kubectl output, every space included

We run the exact same commands on a real cluster and compare every line of output with the simulator. Spacing, column alignment, exit codes. All of it.

Conformance test output diff between Kubernetes and simulator

Checked against official Kubernetes schemas

Every resource the simulator creates is validated against official Kubernetes OpenAPI specs. Same fields, same shapes, no surprises when you move to the real thing.

OpenAPI-based Kubernetes schema validation

Try it free for 7 days. No risk, no commitment.

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