CERN Alma 9 repository not accessible outside CERN
In order to follow the installation on Alma9, one has to run this command to get the yum repos
sudo dnf --repofrompath=cern9el,http://linuxsoft.cern.ch/internal/repos/cern9el-stable/x86_64/os --repo=cern9el install cern-release
Unfortunately the link is not accessible outside CERN network