I am very privacy conscious so i opted out for the telemetry data in Volumio. Using a Pi-Hole i now see a large number of connections made by Volumio. Some of them are explainable:
updates.volumio(dot)org
pushupdates.volumio(dot)org
So an update check and a “push” channel to send the updates but what are these:
database.volumio(dot)cloud
functions.volumio(dot)cloud
meta.volumio(dot)org
myvolumio.firebaseapp(dot)com
myvolumio.firebaseio(dot)com
I did not yet “monitor” the traffic that is send / received to/from these servers ! As a test i blocked all these connections and Volumio just works fine without them. I do notice that Volumio tries to connect every 5 seconds to pushupdates.volumio.org quickly earning first place in my “blocked top 10” in the Pi-Hole.
So why do i block the update check / push? I installed the update and lost all settings and all plugins. In the new version these plugins are not (yet) available so i re-installed the previous version for now.
My question remains, what are all these connections and where are they used for?