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Cut kube-state-metrics CustomResourceState noise without breaking alerts

How to trim custom resource metrics and labels with a measurable canary before Prometheus, dashboards, and alerts start lying.

A practical guide to reducing kube-state-metrics and CustomResourceState cardinality with allowlists, metricRelabelings, impact PromQL, and rollback gates.

Created: August 13, 2026

Published: August 13, 2026

Estimated time40 min

LevelIntermediate

Before you startAccess to the kube-state-metrics manifest or Helm values

PlatformsLinux / Docker

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Docker

Local or lab validation with rendered configuration before moving the change into the real cluster.

Dockerrendered valuescurl

Render Helm

helm template ksm prometheus-community/kube-state-metrics -f values-canary.yaml > rendered-ksm.yaml

Inspect relabelings

grep -n 'metricRelabelings\|labeldrop\|action: drop' -n rendered-ksm.yaml

Also available inReducir ruido de kube-state-metrics CustomResourceState sin romper alertas

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