title: Rationale behind Prometheus Labeldrop Action
body: <p>I understand that in order to restrict sending unnecessary metrics to the storage systems, we can use metrics_relabel_configs and action &quot;labeldrop&quot; to drop certain labels.</p>
  <p>All the examples I see, people are dropping labels as if they already knew all the labels associated with the metrics.</p>
  <p>While using exporters like node_exporters, process_exporter and kubestatemetrics for kubernetes, there are just too many metrics present. How do you decide which one to keep or drop ?</p>