On Commons, uploads are currently not working. I've personally tried the Upload Wizard and Flickr2Commons. Both of them give an error of
Could not connect to storage backend "local-swift-eqiad"
Fae has tried to use the API, and also gotten an error.
This was initially reported on Commons:Village Pump at 16:54, 6 January 2017, with AKlapper (WMF) stating at 17:04, 6 January 2017 (UTC) that developers are aware and on it. The last succesful upload took place at 16:10, 6 January 2017 according to Special:NewFiles. It is now 17:59:30, 6 January 2017.
I am creating this task following a request from Fae.