OCP 4 - Performance degradation on AZURE

Solution Verified - Updated -

Issue

  • Big performance issues on OCP 4.X on Azure, installed using UPI.
  • 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.X
  • Azure as cloud provider.

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