28sep24 https://docs.fedoraproject.org/en-US/quick-docs/using-nested-virtualization-in-kvm/

https://www.cyberciti.biz/faq/how-to-install-kvm-on-centos-7-rhel-7-headless-server/

yum -y install qemu-kvm libvirt python3-libvirt libguestfs-tools virt-install

in nested virtualization

virt-host-validate

Install

apt install qemu-kvm libvirt-daemon-system libvirt-clients
apt install virt-manager