[Alert] How to fix NodeFileDescriptorLimit alert fired in OpenShift ?

Solution Verified - Updated -

Issue

  • NodeFileDescriptorLimit critical alert fired in OpenShift.
  • Applications on the node may no longer be able to open and operate on files due to firing alert.
NAME                     SEVERITY  STATE   NAMESPACE             REASON
NodeFileDescriptorLimit  critical  firing  openshift-monitoring  Kernel is predicted to exhaust file descriptors limit soon.

Environment

  • Red Hat OpenShift Container Platform (RHOCP)
    • 4.0

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