Icinga2 for RockyLinux 9
For an official support please visit Icinga2 Page
You can use the un-official repository (v2.14.6) below by executing these commands
curl https://icinga.repo.clinux.fr/icinga2.repo -o /etc/yum.repos.d/icinga2-clinux.repo
dnf update
dnf install icinga2
dnf update
dnf install icinga2
A plugin package is also available (GitHub)
dnf install nagios-plugins-clinux