Does Rocky linux 8.8 supports xCAT 2.15? Which version is suitable for rocky 8.8?
Here: https://pkgs.org/search/?q=xcat suggests there is no package for EL8 or EL9. You can however get the source rpm from Fedora and build it yourself with mock. Either that, it would require requesting EPEL if they would add it to EPEL8 or EPEL9.
Fedora only has xcat 1.0.4 as seen here by source rpms: Overview - rpms/xcat - src.fedoraproject.org