The instructions are for enabling the RHEL 7 server extra repository from RHUI is incorrect because of the repository name 'rhui-rhel-7-server-rhui-extras-rpms'. The correct command should be as follows: # yum-config-manager --enable rhel-7-server-rhui-extras-rpms Reported by: rhn-support-ashipati https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/upgrading_from_rhel_7_to_rhel_8/assembly_preparing-for-the-upgrade_upgrading-from-rhel-7-to-rhel-8#annotations:750f6196-9a77-49b1-bbe5-45a5b764a032
Annotation: Section "3.1. Preparing a RHEL 7 system for the upgrade" of the "Upgrading from RHEL 7 to RHEL 8" title.