Every HTTPS request to the storefront fails certificate validation, so browsers and the mobile app refuse to connect.
Larkspur Outfitters serves its storefront from edge-01, an nginx host that terminates HTTPS for shop.larkspur.test.
Since a little after six this morning the synthetic checkout check has failed from every region, and customers are sending screenshots of a full-page browser warning.
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.