Incident Library

Organisation

Cybozu

Cybozu · cybozu

2 cases · 2018 to 2024

Root cause Capacity exhaustion1Software defect1
Component Linux kernel2Database1Client-side DNS resolver and cache1
Contributing factor Unreviewed defaults1
Symptom DNS resolution failures1High latency1Intermittent timeouts1Packet loss1

Cases

  1. IL-0440 Pods on Cybozu's Neco Kubernetes platform got frequent no such host and i/o timeout DNS errors from dropped packetsCybozu · 2024

    Root cause Capacity exhaustion

  2. IL-0439 Database access slowed after each block device and filesystem expansion because the Linux kernel dropped the page cacheCybozu · 2018

    Root cause Software defect