Get dropped into a broken Linux environment. You have 30 minutes to diagnose and fix it. No multiple choice — real terminals, real services, real pressure.
$ systemctl status postgresql
● postgresql.service - PostgreSQL RDBMS
Loaded: loaded (/lib/systemd/system/postgresql.service; enabled)
Active: failed (Result: exit-code) since Fri 2025-01-10 03:42:17 UTC
$ journalctl -u postgresql --no-pager -n 5
FATAL: data directory "/var/lib/postgresql/15/main" has wrong ownership
HINT: The server must be started by the user that owns the data directory.
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Each scenario spins up an isolated Linux container with real broken services. You get a real terminal — no simulations.
30 minutes to diagnose and fix. Your angry colleagues send increasingly helpful hints as time passes.
Perfect for SRE interview prep. Every session generates a diagnostic timeline showing your troubleshooting approach.
Start free. Upgrade when you need to assess candidates at scale.
For engineers sharpening their own skills.
For teams running technical interviews at scale.
For larger orgs with custom needs.