*dnf-automatic* is an add-on for `dnf` that performs scheduled,
automatic updates. It works pretty much how I would want it to:
triggered by a systemd timer, sends email reports upon completion, and
only reboots for kernel et al. updates.
In its default configuration, `dnf-automatic.timer` fires every day. I
want machines to update weekly, but I want them to update on different
days (so as to avoid issues if all the machines reboot at once). Thus,
the _dnf-automatic_ role uses a systemd unit extension to change the
schedule. The day-of-the-week is chosen pseudo-randomly based on the
host name of the managed system.
The `gitea_root_url` variable is used to configure the root URL for
Gitea, which is in turn used to generate HTTP/HTTPS "clone" links for
Git repositories. If this value is not set, the default is used, which
does not work since the application is behind a reverse proxy.