Briefing
Quillon Security runs its Sentry endpoint sensor on every node of the fleet-east cluster as the sentry-agent DaemonSet, and at 09:04 all five sensor pods started crash-looping inside the same minute.
Agent 7.5.0 went out on Tuesday with new named-pipe hooks, so the obvious suspect is already being named in the channel.
One node, fleet-east-4, has shown SchedulingDisabled.
Inspired by a real outage: External Technical Root Cause Analysis — Channel File 291 (CrowdStrike, 2024). Names and details are fictionalized.
The fix is yours to find: hints, the recovery checks and the debrief unlock inside the incident.