Incident Library?

Incident Library?

Component ?

Client-side DNS resolver and cache 클라이언트 쪽 DNS 리졸버와 캐시 · `dns-resolver`

2 cases · 2019 to 2024

Root cause ?Capacity exhaustion 1 Configuration change 1

Contributing factor ?Cache-masked failure 1 Unknown limit 1 Monitoring blind spot 1 No caching 1 No staged rollout 1 Retry storm 1 Unrepresentative staging 1

Symptom ?DNS resolution failures 2 Control plane unresponsive 1 High error rate 1 Monitoring outage 1 OOMKilled 1 Service outage 1

Cases, by severity

IL-0005 Telemetry rollout overloaded the control planes and broke service discovery — OpenAI, 2024, sev1
Root cause Configuration change
IL-0001 Cluster-wide DNS outage after CoreDNS ran out of memory — Zalando, 2019
Root cause Capacity exhaustion

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