[Nut-upsuser] New User Questions - With Belkin USB

David White whitedavidp at yahoo.com
Tue Jul 9 15:16:09 BST 2019

Hello all and thanks. I read here 
while searching around for my issue's resolution. In this I see that 
this nut driver is creating and using an entry in /dev (in this case 
ttyS0). So I "ll tty*" and see nothing with nut. Since this is a USB 
UPS, I suppose I should be looking for something in /dev/ttyUSB*. I have 
a single entry there ttyUSB0 but that is created and used by me for 
running Heyu for my home automation system.

Any chance I am onto something here?


On 7/8/2019 1:16 PM, Roger Price wrote:
> On Mon, 8 Jul 2019, David White wrote:
>> However I am a bit stumped on monitoring. What I want is to execute a
>> script when the UPS goes on battery. To do this, I think I have to
>> have the nut-client running. Is this correct? If so I seem to have
>> some troulbe.
> You need to have nut-monitor.service running. The command
>  systemctl list-unit-files | grep nut should report
>  nut-driver.service                         static
>  nut-monitor.service                        enabled
>  nut-server.service                         enabled
> plus any "delayed UPS shutdown" service you might use.  nut-driver is
> started automatically by systemd whenever nut-server starts.
> The command ps -elf | grep -E "nut|ups" should show
>  1 S upsd      3096     1 ... /usr/lib/ups/driver/...
>  1 S upsd      3100     1 ... /usr/sbin/upsd
>  1 S root      3104     1 ... /usr/sbin/upsmon
>  5 S upsd      3105  3104 ... /usr/sbin/upsmon
> Roger
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