Here it's important to distinguish an actual error that prevents nut-
client from working, from an annoying error message in the logs.
I see that ExecPreStart from nut-client.service is using the "-" prefix
to the command, meaning that if that particular command fails, it will
not fail the whole service. And that seems to be the case. The status
output acknowledges that the ExecPreStart command failed, but not the
service:
$ systemctl status nut-client.service
○ nut-monitor.service - Network UPS Tools - power device monitor and shutdown
controller
Loaded: loaded (/usr/lib/systemd/system/nut-monitor.service; enabled;
preset: enabled)
Active: inactive (dead) since Tue 2025-04-01 20:43:18 UTC; 10min ago
Duration: 8ms
Main PID: 2262 (code=exited, status=0/SUCCESS) <<<<<<<<
CPU: 12ms
Apr 01 20:43:18 n-nut systemd[1]: Starting nut-monitor.service - Network UPS
Tools - power device monitor and shutdown controller...
Apr 01 20:43:18 n-nut systemd-tmpfiles[2260]: Failed to open
'/usr/lib/tmpfiles.d/nut-common-tmpfiles.conf': No such file or directory
Apr 01 20:43:18 n-nut systemd[1]: Started nut-monitor.service - Network UPS
Tools - power device monitor and shutdown controller.
Apr 01 20:43:18 n-nut nut-monitor[2262]: upsmon disabled, please adjust the
configuration to your needs
Apr 01 20:43:18 n-nut nut-monitor[2262]: Then set MODE to a suitable value in
/etc/nut/nut.conf to enable it
Apr 01 20:43:18 n-nut systemd[1]: nut-monitor.service: Deactivated successfully.
Same for nut-monitor.service. It's definitely a bug (referencing a file that
doesn't exist), but if the only problem is the error message in the logs, then
its impact is less severe. This is point (1) from Bryce's comment above. Step
(2) is only necessary if the impact is more than just an error message in the
logs.
I also checked older ubuntu releases, and it only happens in noble
onwards, so I added the appropriate tasks to this bug.
** Also affects: nut (Ubuntu Oracular)
Importance: Undecided
Status: New
** Also affects: nut (Ubuntu Plucky)
Importance: Undecided
Status: Confirmed
** Also affects: nut (Ubuntu Noble)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2102107
Title:
ExecStartPre=/usr/bin/systemd-tmpfiles --create
/usr/lib/tmpfiles.d/nut-common-tmpfiles.conf (code=exited,
status=1/FAILURE)
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