[Nut-upsdev] Starting drivers without entry in 'ups.conf'

[Arjen de Korte]

Until the release of nut-2.0.5 it was possible to have a working
configuration without configuring anything in 'ups.conf'. Since then,
this no longer works, as the server will only look for driver sockets
for UPSes that have been configured in 'ups.conf' (since the socket is
named after the UPSname).

Drivers will use the old naming scheme '<driver>-<port>' if the UPSname
can't be found in 'ups.conf'. From time to time, people are confused by
this, especially since this used to work up to (and including)
nut-2.0.4. Some distributions even offered this as the standard way of
configuring single UPS systems.

Now that this is no longer possible, I think it is better to refuse to
start in case the UPSname can't be found, to prevent problems later on
in the configuration process. Any thoughts on this?

Best regards, Arjen