Hello all and thanks. I read here <https://mn3m.info/posts/configure-ups-monitor-using-nut-on-debian/> 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?

Thanks

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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