OpenShift 4 disk performance degradation on Azure

Solution Verified - Updated -

Issue

  • Disk performance issues on OpenShift 4 clusters on Azure.
  • OpenShift clusters performance issues on Azure.

  • etcd operator becomes degraded, and related messages appearing in the etcd logs:

    etcdserver: read-only range request ... took too long to execute

    embed: rejected connection from "X.X.X.X:X" (error "EOF", ServerName "")

Environment

  • Red Hat Openshift Container Platform (RHOCP)
    • 4
  • Azure

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