[Nut-upsuser] NUT Client Not Working, Server OK

[Charles Lepple]

[please keep the list CC'd - probably easiest via Reply-All]

On Jan 28, 2022, at 10:20 AM, William Cole wrote:
> However, when executing sudo service nut-client on the Client PC, still getting a Connection refused message:
> 
> upsmon[491] UPS [APCES750Client at 192.168.1.101]:connect failed: Connection failure: Connection refused
> (repeated 9 times)

"Connection refused" is a standard network error message that says that either a firewall is blocking the port, or no daemon is currently listening on that port. Since both ends of this connection are on the same host, a firewall is not particularly likely to be blocking this, but you could always change it to use 127.0.0.1 (localhost) if there is a firewall that can't easily be changed.

In the case of the client Pi, you mentioned that ups.conf was originally empty. You may need to restart upsd (sudo "service nut-server restart", I think) now that it has an entry for the locally connected UPS. upsd listens on the port that NUT clients like upsmon and upsc connect to.

- Charles