Practice Labs

Break-fix labs, free and ungated

You get an environment that is already broken and a terminal to fix it in. Nothing to install, no cloud account, and nothing left running afterwards.

Scenario labs Challenge labs Runs in the browser

How It Works

Each lab drops you into a broken config. Your job: find the bug and fix it.

Understand what went wrong — a teammate pushed broken config and CI is failing.

Run the tool, read the errors, and trace them back to the source.

Edit the config, re-run the check, and confirm a clean result.

Terminal — Linux

Guided break-fix scenarios. Read the symptom, work the terminal, and fix it.

Fix broken HCL configs, missing variables, misconfigured backends, and more.

Debug Dockerfiles, fix multi-stage builds, and repair container configurations.

Fix playbook syntax, module parameters, handlers, and role structures.

Repair pods, services, deployments, RBAC, and network policies.

Fix gitignore, merge conflicts, commit hooks, rebase issues, and SSH configs.

Fix permissions, crontabs, systemd services, nginx, firewall rules, and more.