virt-sysprep

Reset, unconfigure, or customize a virtual machine image. More information: https://manned.org/virt-sysprep.

• List all supported operations (enabled operations are indicated with asterisks):

virt-sysprep --list-operations

• Remove sensitive system data from a virtual machine image:

sudo virt-sysprep --add path/to/image.qcow2

• Specify a virtual machine by its name and run all enabled operations but don't actually apply the changes:

sudo virt-sysprep --domain vm_name --dry-run

• Run only the specified operations:

sudo virt-sysprep --domain vm_name --operations operation1,operation2,…

• Generate a new /etc/machine-id file and enable customizations to be able to change the host name to avoid network conflicts:

sudo virt-sysprep --domain vm_name --enable customizations --hostname host_name --operation machine-id