How to verify we are hitting cdn04.quay.io when pulling images?

Solution Verified - Updated -

Issue

  • We are adding access to 3 new cdn sites tomorrow as noted in Firewall changes for container image pulls 2024/2025
  • How can we validate that the 3 new sites work? From a debug session on a worker node I can podman login to registry.redhat.io and pull images, but I cannot seem to do the same for cdn01.quay.io today.
  • Is it even possible to validate access to cdn04.quay.io, cdn05.quay.io, and cdn06.quay.io based on this note in the article?

Environment

  • Red Hat Quay
    • 3.13.x and lower

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