The yum utility fails to connect to cdn.redhat.com when behind proxy

Solution Verified - Updated -

Issue

  • yum is failing with following error when listing repositories with the system behind a proxy.
# yum repolist
Updating Subscription Management repositories.
Red Hat Enterprise Linux 8 for x86_64 - AppStream (RPMs)                                             0.0  B/s |   0  B     00:00
Red Hat Enterprise Linux 8 for x86_64 - BaseOS (RPMs)                                                0.0  B/s |   0  B     00:00
Failed to synchronize cache for repo 'rhel-8-for-x86_64-appstream-rpms', ignoring this repo.
Failed to synchronize cache for repo 'rhel-8-for-x86_64-baseos-rpms', ignoring this repo.

Environment

  • Red Hat Enterprise Linux 8
    • yum

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