Previously (some years back) I have used
vmbuilder, but this now seems to be unmaintained and cannot be used with newer ubuntu versions.
I have also tried
vagrant with vagrant-libvirt plugin, apart from this method requires a huge amount of packages to be installed it didn't work in the end after all because there is no ubuntu cloud images for the
I have also looked into standard virt-installer providing the standard ISO image as CD-ROM, but that is not non-interactive. Apart from that I also ran into a ubiquity bug during the interactive installation.
So what is the best way to non-interactively provision ubuntu virtual
libvirt? Or what is the replacement of vmbuilder?