$ virt-builder fedora-26 virt-builder: error: failed to download http://download.opensuse.org/repositories/Virtualization:/virt-builder-im...: HTTP status code 500 [...] You can temporarily disable this repo by doing: $ mkdir -p ~/.config/virt-builder/repos.d/ $ touch ~/.config/virt-builder/repos.d/opensuse.conf Keep an eye on https://status.opensuse.org/ . When download.opensuse.org becomes available again you can just remove the ‘~/.config/virt-builder/repos.d/opensuse.conf’ file to go back to normal. Thanks: Pino Toscano for coming up with the incantation above. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com virt-df lists disk usage of guests without needing to install any software inside the virtual machine. Supports Linux and Windows. http://people.redhat.com/~rjones/virt-df/