Worker nodes over-committed and causing nodes to restart or go "NotReady"

Solution Verified - Updated -

Issue

  • My worker nodes are suddenly restarting with no apparent reasons, and appearing as NotReady.
  • Why my worker nodes are being replaced?
  • My worker node appears as over-committed when running oc describe node command.
  • Why my pods are restarting?

Environment

  • Red Hat OpenShift Service on AWS (ROSA)
    • 4.x
  • Red Hat OpenShift Dedicated (OSD)
    • 4.x
  • Azure Red Hat OpenShift (ARO)
    • 4.x
  • Red Hat OpenShift Container Platform (RHOCP)
    • 4.x

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