OpenShift node filesystem usage metrics for local storage is missing in Prometheus node_exporter

Solution Verified - Updated -

Issue

  • Some OCP nodes have additional filesystems mounted (e.g. /var/lib/origin/es-storage) but Prometheus node_exporter doesn't report any metrics about them (i.e. node_filesystem_ metrics).
  • How can we instruct Prometheus node_exporter to show metrics for all mounted filesystems?

Environment

  • Red Hat OpenShift Container Platform (OCP) 3.11

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