Incident Library

Organisation

Sunwoo Park

Sunwoo Park · sunwoo-park

1 case · 2023

Root cause Breaking change in an upgrade
Component Admission webhookGKE control planeIstio
Contributing factor Deferred upgrades
Symptom Service outage

Cases

  1. IL-0180 A GKE control plane auto-upgrade from 1.22 to 1.23 removed the v1beta1 Ingress and ValidatingWebhookConfiguration APIs that Istio 1.7.4 still used, and Istio stopped working in productionSunwoo Park · 2023

    Root cause Breaking change in an upgrade