How to add custom registries to OpenShift 4?

Solution Unverified - Updated -

Issue

  • Is it possible to add additional registry to OpenShift 4?
  • How to add container registry with url like " abc.com:5001" (including the port).
  • Is it possible to add a registry that requires a certificate in OpenShift 4?
  • According to the documentation for configuring image registry settings, additionalTrustedCA is added but it failed to pull image from the registry:

    Failed to pull image “abc.com:5001/namespace/rhel-luna:latest”: rpc error: code = Unknown desc = pinging docker registry returned: Get https://abc.com:5001/v2/: x509: certificate signed by unknown authority
    

Environment

  • Red Hat OpenShift Container Platform (RHOCP)
    • 4
  • External image registry

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