[Nut-upsuser] List of connected slaves

Larry Fahnoe fahnoe at fahnoetech.com
Fri Apr 13 12:21:18 UTC 2018

Umm, the ups -c option "Lists each client connected on ups, one name per
line." according to the man page and it has worked for me for a long time.


On Fri, Apr 13, 2018 at 7:01 AM, Charles Lepple <clepple at gmail.com> wrote:

> On Apr 13, 2018, at 3:55 AM, Jon Bendtsen <jon.bendtsen at jonix.dk> wrote:
> >
> > On 13/04/2018 07.56, zefanjas wrote:
> >> Hi,
> >> is there a command to get a list of connected slaves you can run on the
> >> nutserver? I want to monitor the slaves and if their are actually
> >> connected to server.
> >
> > if there is no such command in NUT, then on my Debian Stretch using the
> lsof -p command on the upsd proccess on my NUT server reveals TCP
> connections to the clients.
> >
> > I see 2 connections pr. client, probably because each client monitors 2
> UPS's, one for each powersupply.
> To be pedantic for a moment, the TCP connections to port 3493 are a
> superset of the slaves connected - the difference being tools that are
> monitoring but not logged in as a slave.
> You can get a list of slaves with the following:
> echo 'LIST CLIENT ups' | nc nut-server-host 3493
> I thought there was an option to "upsc" for this, but I guess not. There
> is also a bug in the Python module: https://github.com/
> networkupstools/nut/issues/549
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Larry Fahnoe, Fahnoe Technology Consulting, fahnoe at FahnoeTech.com
           Minneapolis, Minnesota       www.FahnoeTech.com
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