Quick head-scratcher avoidance tip
When upgrading versions of Fedora, it’s almost never a bad idea to force a SELinux relabel on reboot (or via fixfiles if it’s a little too late ;-))
I yum-upgraded my doorstop-cum-network box without doing so, then had a momentary headscratcher relating to why Dovecot failed to start or OpenSSH wouldn’t use my pubkey. Whoops.
This public service announcement brought to you by the What The Heck Happened There Avoidance League