Incident Library

Organisation

Preply

Preply · preply

1 case · 2020

Root cause DNS or network fault
Component conntrack tableCoreDNSkube-proxy
Contributing factor Automation amplificationIgnored early signalNo caching
Symptom DNS resolution failuresHigh error rateStale endpoint routing

Cases

  1. IL-0049 Partial DNS outage after CoreDNS scaled down and kube-proxy failed to delete stale conntrack entriesPreply · 2020

    Root cause DNS or network fault