En résumé :

1. Customize

   $ sudo virt-customize -a /var/lib/libvirt/images/imagetest1.qcow2 --hostname vm01.test.lab --root-password password:rootpw --ssh-inject 'root:file:labkey.pub' --uninstall cloud-init --selinux-relabel

2. Import and install

   $ sudo virt-install --name vm01 --memory 1024 --vcpus 1 --disk /var/lib/libvirt/images/image.qcow2 --import --os-type linux --os-variant generic --noautoconsole

3. Access

   $ sudo virsh domifaddr vmlab01

   $ ssh -i labkey root@192.168.122.76