To install Linux KVM hypervisor on CentOS 8, run
dnf install qemu-kvm
Install libvirtd
dnf install libvirt-daemon libvirt-daemon-kvm libvirt-client
Enable libvirtd to start on boot
systemctl enable libvirtd
Start libvirtd
systemctl start libvirtd
To see status, run
systemctl status libvirtd
Install virt-install
dnf install virt-install
Now you have Linux KVM installed. You can use virt-install or Virt Manager to create virtual machine.