Unbound DNS caching server not loging
What's your logfile
value? Am I right to assume it involves /var/log/unbound
being a directory?
If so, make sure that directory exists, and that unbound runtime user may write in there.
mkdir -p /var/log/unbound
chown unbound:unbound /var/log/unbound
Otherwise, you may need to create unbound log file and set its permissions prior to starting unbound
touch /var/log/unbound
chown unbound:unbound /var/log/unbound