egrep -c '(vmx|svm)' /proc/cpuinfo

sudo apt update
sudo apt install qemu-kvm libvirt-daemon-system libvirt-clients bridge-utils virt-manager -y

sudo usermod -aG libvirt $USER
sudo usermod -aG kvm $USER

sudo systemctl enable --now libvirtd

sudo virsh pool-define-as default --type dir --target /var/lib/libvirt/images
sudo virsh pool-autostart default
sudo virsh pool-start default

sudo virt-install \
  --name ubuntu-vm \
  --memory 4096 \
  --vcpus 2 \
  --disk path=/var/lib/libvirt/images/ubuntu-vm.qcow2,size=50 \
  --cdrom /path/to/ubuntu.iso \
  --os-variant ubuntu24.04 \
  --graphics spice \
  --network network=default

sudo systemctl enable --now ksm

sudo systemctl stop libvirtd
sudo apt remove --purge qemu-kvm libvirt-daemon-system virt-manager -y
sudo rm -rf /var/lib/libvirt
sudo userdel libvirt-qemu