raynix 筆記

How to Drop Unwanted Metrics with Google Managed Prometheus

TL; DR: some prometheus exporters such as kube-state-metrics do emit a LOT of metrics and that will make a difference in your next bill so here’s how to drop them.

apiVersion: monitoring.googleapis.com/v1
kind: PodMonitoring
metadata:
  name: my-app-monitoring
spec:
  endpoints:
    - interval: 1m
      metricRelabeling:
        # drop is the action!
        - action: drop 
          # a regex to match all metrics to be dropped
          regex: unwanted_metric_prefix-.*
          # to match against the name of the metric
          sourceLabels:
            - __name__
      path: /metrics
      port: 8080
  selector:
    matchLabels:
      app: my-app

​x
 
apiVersion: monitoring.googleapis.com/v1
kind: PodMonitoring
metadata:
  name: my-app-monitoring
spec:
  endpoints:
    - interval: 1m
      metricRelabeling:
        # drop is the action!
        - action: drop 
          # a regex to match all metrics to be dropped
          regex: unwanted_metric_prefix-.*
          # to match against the name of the metric
          sourceLabels:
            - __name__
      path: /metrics
      port: 8080
  selector:
    matchLabels:
      app: my-app
​

March 19, 2025

admin

Systems Admin

Google Cloud, prometheus