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Questions tagged [nut]

The Network UPS Tools are a set of open-source programs that facilitate UPS monitoring in a networked environment using a client/server model.

The Network UPS Tools ("NUT" for short) are a set of programs for monitoring UPSes and reacting to power events. They operate off a client/server model, so a single "master" host may be directly connected to a UPS and a number of "slave" hosts can get the UPS's status from the master.

NUT supports redundant power supplies; a full NUT configuration can define how many power supplies each monitored UPS powers (usually one or none) and how many power supplies the system needs in order to keep running. This allows NUT to only shut systems down when absolutely necessary.

NUT can communicate with UPSes over a variety of channels, including network, RS232, and USB. Different UPSes are supported to varying degrees; some UPSes communicate via open or published protocols and are well supported, while others use proprietary protocols that many not have been fully reverse-engineered yet. There is a hardware compatibility list detailing current support.

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How to have NUT automatically power off a UPS before the monitoring system shuts down?

I've got NUT configured on a few systems in the following way: One host is connected to four UPSes via USB. That host is plugged into two of the four UPSes. Two other hosts are on the same rack, each plugged into one of the remaining UPSes. …
asciiphil
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How can I fix my UPS repeatedly disconnecting and reconnecting?

I'm running a nut server connected to a Tripp Lite SMART1500LCD by USB. The device is behaving unexpectedly and I can see these kernel messages: user@host:~ $ dmesg -T [Wed Dec 4 13:24:24 2019] usb 1-1.5: USB disconnect, device number 91 [Wed Dec …
Layne
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Server not start in low battery (Network UPS Tools)

I have server (Centos 6.5 + nut-2.6.5 + Powercom BNT-600AP USB) everything works well, UPS picks up problems with electricity. When no electricity more than 10 minutes UPS shutdown the server, and turns the server when power is restored. When no…
Sanya Snex
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How to disable UPS energy_saving with NUT?

I've got a Proline 650 UPS (Serial) installed Extra details: The UPS has a serial connection with a single 12v SLA battery. (It was not listed in the NUT compatibility list but after compiling NUT-scanner it was detected to work with the blazer_ser…
user1862165
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Can't get upsmon service started to monitor (and respond to) remote UPS

I am having difficulty getting my nut install to simply monitor a single remote UPS attached to a Buffalo LinkStation Duo. I can manually correctly read its status using upsc ups@buffalo.local and it is user / passwordless. Long-run, what I want is…
stefandz
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Network UPS Tools (NUT) causing UPS to Reboot?

I have NUT upsmon 2.7.2 installed on an OrangePi One running Armbian 5.25 (which is Debian jessie). It is setup to monitor my Tripp Lite SmartOnline SU3000RTXLCS2U using the usbhid-ups driver and communicate to the server when it should shutdown or…
radensb
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NUT UPS-Dummy driver in repeater mode for Synology NAS

I have a NUT client that requires the UPS it monitors to be named ups. The client (a Synology NAS) does not provide a method to change this configuration. My setup consists of multiple UPSes monitored by a single master and I'd rather not have 1/4…
Jon
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apcupsd vs NUT in Proxmox environment

I have a Proxmox node which is actually is HP Proliant DL 320e G8 server + APC SmartUPS 750 connected directly to the server by usb cable. On the host are running several Linux VMs. My question is - which software are better for graceful shutdown…
powerthrash
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APC SC1000I over USB and NUT

I've got an APC SC1000I which I want to set up to be monitored with NUT, likely with newhidups. The basic config doesn't work: # tail -n 1 /var/log/messages Poll UPS [apc@localhost] failed - Driver not connected What puzzles me, is that the UPS…
yanchenko
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NUT shuts down UPS even when power is available

I have an APC Backup UPS ES 850G2, connected via USB to a RaspberryPi acting as NUT master. The Pi uses the usbhid-ups driver. Several other devices are NUT slaves and poll the Pi for UPS info. Here's a list of some particular things about the…
TTL
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NUT loses communications with the UPS

I am using NUT to monitor my UPS. I have a APC Back-UPS ES 550G, and the NUT server runs on a Raspberry Pi. I use the usbhid-ups driver, which works fine most of the time. However, after a few hours of running, it starts to broadcast messages on the…
petersohn
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MacOS nut client install for synology network ups

I have an APC UPS connected to my synology nas and I am trying to get my mac (10.13) to connect to the 'network ups' of synology. So far I've been trying to follow this…
Kevin V
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nut ups master and slave across different networks

I have set up a NUT master and slave and they work great when on the same LAN. Does anyone know if it possible to set them up across different networks? I can't find any reference to this anywhere when searching online and no one has been able to…
Madrid1980
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Nut says APC UPS is on battery. It is not

Since 2 days my Smart-UPS 1500 RM reports it is on battery but this is clearly not the case since it's been running for more than two days indicating 100% battery with 01:30:00 running time. Batteries were replaced a couple of months ago. I do not…
divB
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install-man5 Error 1 after running 'make install' after compiling NUT (Network UPS Tools)

In an attempt to solve my NUT energy-saving problem that I've asked about in a lengthy serverfault question, I read that in the latest NUT version, nutdriver_qx replaces blazer_ser and I think it's worth trying nutdriver_qx as it might allow me to…
user1862165
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