Failed to mirror OpenShift image repository when private registry is insecure

Solution Verified - Updated -

Issue

  • Unable to install or upgrade OpenShift Container Platform due to failure in mirroring the OpenShift image registry.

  • oc client fails to mirror the OpenShift image repository to use during cluster installation or upgrade in disconnected environment with error:

error: unable to connect to X.X.X.X:5000/ocp4/openshift4: Get https://X.X.X.X:5000/v2/: http: server gave HTTP response to HTTPS client
  • How to mirror images to an insecure registry?

Environment

  • Red Hat OpenShift Container Platform (RHOCP)
    • 4.X

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