Loopedin Labs Pro

Be the one who fixes it.

Real outages, harder every week. Break prod in the browser, fix it before anyone notices.

• Advanced labs

  Harder, interview-grade incidents in the terminal: OOMKilled pods, stuck rollouts, leaked secrets, Terraform state locks. New ones every week.

• Detailed DevOps roadmap

  30 modules from zero to on-call ready, each with topics, the best free resources and a hands-on task.

Free

The PDF guides

Written the way you meet these tools at work: something broke, here's how to find out why. Free with a Loopedin Labs account, just sign in and download.

Linux for DevOps Engineers

Learn it by fixing real problems.

• 57 pages
• 15 chapters
• 25+ real-world scenarios
• 10 hands-on labs

Peek inside

2-minute triage on an unknown prod boxThe 'service unreachable' ladderOOM killer and exit code 137

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All 15 chapters ›

1. 1How Linux fits together + a 2-minute triage for any box
2. 2Filesystem, symlink deploys, finding configs fast
3. 3Pipes, awk, sed, jq: answer log questions in seconds
4. 4Permissions, sudo and the 'Permission denied' ladder
5. 5Processes, signals, /proc, deleted-but-open files
6. 6systemd units, journalctl, flapping services
7. 7Networking: ss, dig, curl timings, tcpdump
8. 8Disks, fstab, growing volumes, the 3 a.m. disk-full playbook
9. 9CPU, memory, OOM killer and exit code 137
10. 10Bash scripts that survive production
11. 11SSH hardening and brute-force defence
12. 12Packages, cron, and where every log lives
13. 13Containers under the hood: namespaces, cgroups
14. 14Troubleshooting playbooks + symptom table
15. 1510 practice labs + one-page cheat sheet

Docker in One Weekend

From zero to Compose in two days.

$ docker compose up -d

Docker in One Weekend

From zero to Compose in two days.

• 23 pages
• 8 quests
• 2 mini projects
• 'When things go boom' fix table

Peek inside

Your weekend map: 8 questsContainers vs VMs, explained visuallyPorts, with diagramsThe one-page cheat sheet

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All 8 chapters ›

1. 1Meet Docker: containers vs VMs, first container
2. 2Images and containers, the full lifecycle
3. 3Ports, volumes and env vars
4. 4Mini project: serve your own site from nginx
5. 5Your first Dockerfile + a Flask API
6. 6Layers and build cache: 1-second rebuilds
7. 7Docker Compose: app + Redis with one command
8. 8Ship to Docker Hub, clean up, what next