Output of journalctl -u pve-cluster:
-- Logs begin at Sun 2020-11-22 08:12:46 CET, end at Mon 2020-11-23 12:29:48 CET. --
-- No entries --
Re - upgrading, I was under the assumption this happened automagically. Will do an apt update/dist-upgrade.
Edit - there were no ProxMox updates available...