Service outage 서비스 중단 · service-unavailable

Cases

1. IL-0020 A descheduler evicted pods from cordoned nodes during an EKS upgrade — UK Ministry of Justice, 2025, sev1

   Root cause Faulty deployment

2. IL-0005 Telemetry rollout overloaded the control planes and broke service discovery — OpenAI, 2024, sev1

   Root cause Configuration change

3. IL-0024 Hub outage from expensive cache queries and uncancelled requests — Hugging Face, 2024, sev1

   Root cause Software defect

4. IL-0009 A generated name collision made Argo CD delete the production environment — InfluxData, 2023, sev1

   Root cause Configuration change

5. IL-0010 A dropped template delimiter made Argo CD delete every service worldwide — Skyscanner, 2021, sev1

   Root cause Configuration change

6. IL-0008 A validating webhook with a dead backend stalled a GKE master upgrade — Jetstack, 2019, sev1

   Root cause Configuration change

7. IL-0004 Pod priority defaults preempted production ingesters — Grafana Labs, 2019, sev2

   Root cause Configuration change

8. IL-0014 A GKE upgrade that stalled, left zombie nodes and broke an ingress — loveholidays, 2019

   Root cause Cloud provider outage