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2 stories

Banner: Kubernetes HPA unable to read CPU utilisation because a container has no CPU request

DevOps & CI/CD Bug Report

Kubernetes HPA shows <unknown>/70% and never scales: missing request for cpu

Ryan Pham · Aug 6, 2025 · 5 min read

During a traffic spike our checkout service stayed at 3 pods while CPU was pegged. kubectl get hpa showed <unknown>/70% for weeks. A sidecar container added by a platform change had no CPU request, so utilisation could not be computed. Requests on every container fixed it.

Banner: Argo CD application stuck OutOfSync because of fields changed by controllers

DevOps & CI/CD Bug Report

Argo CD application always OutOfSync after sync: defaulted fields and HPA replicas

Ryan Pham · Dec 4, 2024 · 6 min read

Half our Argo CD applications showed OutOfSync seconds after every successful sync, and auto-sync kept fighting the HPA over replica counts. The live objects had fields set by controllers and webhooks that Git never mentioned. Targeted ignoreDifferences and server-side diff fixed it.