The nightly orders database backup exits successfully but leaves nothing in /backups.
This morning the restore rehearsal went looking for the orders database archive and found an empty directory.
The job's exit status is clean and its schedule unchanged, so the first suspicion is that something deletes archives after they are written.
The fix is yours to find: hints, the recovery checks and the debrief unlock inside the incident.
The alert fires and the clock starts. Read the page and the briefing.
Work in a simulated shell with realistic output: logs, configs, services.
Change the system the way you would in production. Hints are there if you get stuck.
Automated checks verify the recovery, then the debrief explains what happened.
Free, instant, and it works on your phone. No signup: start as a guest and save your progress later.