[Nut-upsuser] is POWERDOWNFLAG for primary or secondaries?

[Jim Klimov]

It is indeed meaningful for primaries, I guess the message should be
conditional on that.

Jim

On Wed, Apr 1, 2026, 22:56 Dan Langille via Nut-upsuser <
nut-upsuser at alioth-lists.debian.net> wrote:

> Hello,
>
> After a recent upgrade from 2.8.2 to 2.8.4, a restart of upsmon gave this
> message:
>
>
> ---
> % sudo service nut_upsmon restart
> Network UPS Tools upsmon 2.8.4 release
> Starting nut_upsmon.
> Network UPS Tools upsmon 2.8.4 release
> UPS: ups04 at gw01.int.example.org (secondary) (power value 1)
> UPS: heartbeat (monitoring only)
> No POWERDOWNFLAG value was configured in /usr/local/etc/nut/upsmon.conf!
> POWERDOWNFLAG should be a path to file that is normally writeable for root
> user, and remains at least readable late in shutdown after all unmounting
> completes.
> ---
>
>
> Background: The UPS is connected to gw01 mentioned above; the above host
> is a secondary.
>
> Reading docs, it seems that POWERDOWNFLAG is meant for primaries, not
> secondaries.
>
> 'and a POWERDOWNFLAG if this machine is a "primary" system connected to
> the UPS and drives its late-shutdown power-off command in case of an
> emergency.'
>
> re: https://networkupstools.org/docs/man/upsmon.conf.html
>
>
> Am I doing this wrong? This is my secondary configuration
>
>
> ---
> [20:29 r730-01 dvl /usr/local/etc/nut] % sudo cat
> upsmon.conf.6958.2025-04-02 at 22:46:09~
> # Ansible managed
>
> MONITOR ups04 at gw01.int.example.org    1 r730-01         myrealpassword
> secondary
> MONITOR heartbeat                     0 local-heartbeat myrealpassword
> primary
> SHUTDOWNCMD /sbin/shutdown -h +0
> NOTIFYCMD ONLINE EXEC
> NOTIFYCMD ONBATT EXEC
> NOTIFYCMD /usr/local/sbin/upssched
> ---
>
>
> The line I later added, and which silenced the messages, is:
>
> POWERDOWNFLAG /var/run/nut-killpower
>
> I chose that line because that directory is cleared upon OS restart:
>
> re https://networkupstools.org/docs/user-manual.chunked/ar01s06.html
>
> "... /etc/killpower, or preferably be /var/run/nut/killpower or
> /run/nut/killpower in a temporary file system that disappears after reboot"
>
> Thank you.
>
> --
>   Dan Langille
>   dan at langille.org
>
> _______________________________________________
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