Hosting front end offline after upgrade - database gone

I ran some system updates a while back which took my sites offline. After much effort, I upgraded aegir to 2.1 (as well as a number of other things) and got the sites back online. The web front end was still offline though, but I figured I'd solve that later. Well, later is now, and while trying to figure out why it's offline, I discovered that the aegir database is gone! No wonder the site won't load.

Not sure where to start. I tried reinstalling aegir but it says "aegir frontend failed to bootstrap, something went wrong!" It says "dpkg: dependency problems prevent configuration of aegir2", and the faq says to make sure Drush is installed, but Drush still works from the previous setup. I re-imported the aegir database from a backup, hoping it would be that simple, but still no luck. Any direction would be greatly appreciated!

#1

I ended up having to uninstall aegir (thanks to the page of uninstall steps) and do a manual reinstall, then import the sites in from backups. Not fun, but glad it's resolved.