The latest articles on DEV Community by Yasar khan (@yasar_devops). https://dev.to/yasar_devops https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F4174062%2F0f43cdbd-bbc7-4498-a8a0-91590f4959bc.jpg https://dev.to/yasar_devops en Yasar khan Fri, 09 Oct 2026 18:53:30 +0000 https://dev.to/yasar_devops/i-built-a-free-devops-roadmap-with-560-scenario-based-interview-questions-heres-what-i-learned-48m9 https://dev.to/yasar_devops/i-built-a-free-devops-roadmap-with-560-scenario-based-interview-questions-heres-what-i-learned-48m9 <p>Most "learn DevOps" resources have the same two gaps: no real order to work through, and interview prep that's just flashcard definitions — "What is Docker?" — instead of anything resembling an actual interview.</p> <p>I kept seeing this from both sides: freshers who'd watched forty tutorials and still couldn't say what to check first when a container won't start, and experienced engineers prepping for a cert with nothing to practice on but multiple-choice trivia. So I built DevOps Level (<a href="https://devopslevel.com" rel="noopener noreferrer">https://devopslevel.com</a>) to close that gap — free to start, no account needed to read most of it.</p> <p>What's in it:</p> <ul> <li>A 14-stage roadmap, Linux through GitHub Actions, each stage with real explanations, not just a checklist.</li> <li>20 tool guides, 260+ pages, built as deep dives instead of cheat sheets — the Kubernetes guide deploys a real multi-service app, exposes it through an Ingress, and walks through three real broken-pod scenarios.</li> <li>560 interview questions, scenario-based on purpose: "A container that ran fine yesterday now fails with 'no space left on device' — what do you check first?" not "define a container."</li> <li>Practice Ground — a simulated terminal you type real commands into, graded on real behavior, no cluster required.</li> </ul> <p>Testing it for real caught things memory wouldn't have</p> <p>Writing a DevOps guide from memory is the fast way. I didn't do that — most of this was built and tested against a real Docker daemon and a real local Kubernetes cluster first, and the write-up follows what actually happened.</p> <p>That surfaced real numbers I wouldn't have guessed: a rolling deployment measured against 200 live requests came back 199/200 successful, not the "zero-downtime" claim most tutorials make — the one dropped request is exactly what explains the readiness/SIGTERM timing gap worth teaching.</p> <p>It also caught a mistake of my own. Mid-build, I ran a broad docker volume prune -af meaning to clear a few leftover test volumes — and it took out a Jenkins home directory and a Redis volume from an unrelated project along with it. Nothing unrecoverable, but a real reminder that wrote itself straight into the guide: list what a broad, forced prune would actually remove before you run it. The guide is better for having hit that for real instead of just warning about it in the abstract.</p> <p>Where it's at</p> <p>Free tier covers the full roadmap, ~50 interview questions, and the first page of every tool guide. Full access is ₹299/month or ₹1,999/year. Still early — genuinely want feedback on what's missing or unclear.</p> <p>If you're learning DevOps or prepping for an interview: <a href="https://devopslevel.com" rel="noopener noreferrer">https://devopslevel.com</a></p> <p>Happy to go deeper on any of this in the comments.</p> devops career kubernetes webdev