All my sites are offline (opens in new tab)

I woke up to this today. All my sites were down including one several hundred kilometers from home and one on another continent. I am currently in Bali. I can detect no email problems, possibly vindicated by receiving several notification messages from flightaware. I clicked the big red banner and verified my email to no avail. Still everything offline. I logged in remotely to each of the receivers and everything looked fine. Restarting piaware (sudo systemctl restart piaware) on each site se...