<div dir="ltr"><div>Thank you very much for the advice.</div><div><br></div><div>My upsd.conf [located on the server] is set to listen as follows:</div><div><br></div><div>LISTEN 192.168.1.100 3493</div><div>LISTEN 192.168.1.101 3493</div><div>LISTEN 0.0.0.0 3493</div><div>LISTEN 127.0.0.1 3493</div><div><br></div><div>After making these changes I shut both the server and client down [sudo shutdown now].</div><div>On restart I began getting messages to the effect that the server was not available. The messages appeared on both the server and client terminal displays.</div><div><br></div><div>I commented out the 127.0.0.1 LISTEN line on the server's upsd.conf script and then shutdown and restarted both server and client.</div><div>The "server not available" message did not appear, however in both instances I am still getting the "connection refused" message on the client [after running sudo service nut-client status]. <br></div><div><br></div><div>I'm now casting about for my next move. Clearly I've got something configured wrong, but what I don't yet know.<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, Jan 30, 2022 at 10:29 PM Charles Lepple <<a href="mailto:clepple@gmail.com">clepple@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">[please keep the list CC'd - probably easiest via Reply-All]<br>
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On Jan 28, 2022, at 10:20 AM, William Cole wrote:<br>
> However, when executing sudo service nut-client on the Client PC, still getting a Connection refused message:<br>
> <br>
> upsmon[491] UPS [<a href="mailto:APCES750Client@192.168.1.101" target="_blank">APCES750Client@192.168.1.101</a>]:connect failed: Connection failure: Connection refused<br>
> (repeated 9 times)<br>
<br>
"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.<br>
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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.<br>
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- Charles</blockquote></div><br clear="all"><br>-- <br><div dir="ltr" class="gmail_signature"><div dir="ltr">Fredericksburg, VA<br></div></div>