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I wanted to learn Kubernetes, but the options were either "build a local lab" or pay for expensive classes built around cloud environments. I wanted something you could just open and learn from. So I built a browser-based cluster simulation with lessons to follow along.
It behaves like Kubernetes, but it's just JavaScript under the hood. Enough to run kubectl commands, create resources, and watch their lifecycle play out. There's also a live cluster visualizer so you can see your nodes, Pods, and containers in real time.
Once you've covered the concepts, you can jump into CKA drills. Each drill is a standalone, time-boxed scenario that mirrors the real exam format: a broken cluster state, a concrete task, and a pass-or-fail outcome.
The goal isn't to simulate the exam. It's to build the reflex of diagnosing and fixing things quickly, so that when you sit the real exam, the commands and the reasoning are already automatic.
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Lightweight: Designed for speed, it works everywhereโincluding vscode.devโwithout the bloat. - Source: dev.to / 3 months ago
It's VSCode, so it's 90% similar to https://vscode.dev. - Source: Hacker News / 3 months ago
It is basically VS Code Web. Try https://vscode.dev/ to see how you feel. If you don't like it you won't like cider. - Source: Hacker News / 3 months ago
GitHub Codespaces provides 60 hours of free compute time every month, which is more than enough for scoped home assignments or interviews. Itโs a full VSCode in the browser at github.dev or vscode.dev. - Source: dev.to / 9 months ago
In VSCode extensions this is trivial, this is how you create the 'executable': https://github.com/floooh/vscode-kcide/blob/main/src/wasi.ts ...and this is how you run it: https://github.com/floooh/vscode-kcide/blob/2dfc621aade4a2be06b6a0e703bebb244f5e414c/src/assembler.ts#L33-L40 The asmx.wasm file is a vanilla POSIX cmdline tool (https://github.com/floooh/easmx) which loads and saves files, and the tool has been... - Source: Hacker News / 9 months ago
replit - Code, create, andlearn together. Use our free, collaborative, in-browser IDE to code in 50+ languages โ without spending a second on setup.
KodeKloud - We are a fast growing EdTech startup on trending technologies in IT and Cloud Computing.
GitHub Codespaces - GItHub Codespaces is a hosted remote coding environment by GitHub based on Visual Studio Codespaces integrated directly for GitHub.
VS Code - Build and debug modern web and cloud applications, by Microsoft
StackBlitz - Online VS Code Editor for Angular and React
Cursor - The AI-first Code Editor. Build software faster in an editor designed for pair-programming with AI.