node-exporter throws errors reading the InfiniBand class counter info in RHOCP

Solution Verified - Updated -

Issue

  • InfiniBand counters are not scrapped by Prometheus

  • in the node-export pods are observed errors indicating that not able to read the Infiniband counters

    2025-09-30T16:23:04.696886438+05:30 ts=2025-09-30T10:53:04.696Z caller=collector.go:169 level=error msg="collector failed" name=infiniband duration_seconds=0.000299582 err="error obtaining InfiniBand class info: failed to read file \"/host/sys/class/infiniband/qedr0/ports/1/counters/VL15_dropped\": invalid argument"

Environment

  • Red Hat OpenShift Container Platform (RHOCP)
    • 4.18.22
  • Prometheus
  • Infiniband

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