For syncthing, is there a log file option; I can’t seem to find that.
I think not. But you can probably do
services.syncthing.extraFlags = [ "--logfile=/path/to/file" ... ] (according to Syncthing — Syncthing documentation) if you don’t want logging to the system journal.
ok, logs can be shown like this;). Thanks
journalctl -u syncthing.service