I just wanted to test the Foreman 3.12 / Katello 4.14 RC, I got halted by dnf not finding the GPG key for the pulpcore repo:
pulpcore: Fetch, Upload, Organize, and Distribute Software Packages. 3.4 kB/s | 235 B 00:00
Status code: 404 for https://yum.theforeman.org/pulpcore/nightly/GPG-RPM-KEY-pulpcore (IP: 2a04:4e42:41::561)
That made me aware of the release linking pulpcore to nightly.
# cat /etc/yum.repos.d/katello.repo
# Place this file in your /etc/yum.repos.d/ directory
[katello]
name=Katello 4.14
baseurl=https://yum.theforeman.org/katello/4.14/katello/el8/$basearch/
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-foreman
enabled=1
gpgcheck=1
# Candlepin RPMs as supported by Katello - This is a coordinated
# copy of Candlepin's packages in order to ensure compatibility
[candlepin]
name=Candlepin: an open source entitlement management system.
baseurl=https://yum.theforeman.org/candlepin/4.4/el8/$basearch/
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-candlepin
enabled=1
gpgcheck=1
[pulpcore]
name=pulpcore: Fetch, Upload, Organize, and Distribute Software Packages.
baseurl=https://yum.theforeman.org/pulpcore/nightly/el8/$basearch/
gpgkey=https://yum.theforeman.org/pulpcore/nightly/GPG-RPM-KEY-pulpcore
enabled=1
gpgcheck=1
Cheers, lumarel