[Nut-upsuser] ups not being started sat reboot

Gene Heskett gheskett at shentel.net
Sat Sep 5 16:27:18 BST 2020

On Saturday 05 September 2020 05:23:04 Roger Price wrote:

> On Sat, 5 Sep 2020, Gene Heskett wrote:
> > But runs normally if started.  On a rpi4 running an uptodate
> > raspbian buster, how do I set it to auto start at boot time?
> Hello Gene, By "auto start" I assume you mean the automatic power on
> of a box when wall power returns after a power failure. For this to
> work, two things are needed:
>   1. The UPS power outlets have been turned off.
>   2. The box's BIOS has been set to "power up on AC return".  (The
> words may change, it depends on the BIOS.)
> The problem may be that the box is turned off without a command to the
> UPS to later turn off the power outlets.  When the power outlets are
> turned off, you should hear the "clunk" of the relays.
> Roger
I have a standby that starts in about 5 seconds, so theoretically, any 
shut downs, which shouldn't happen unless the generac blows up, won't 
happen.  Its a 650WA cyberpower, running an rpi4 and its mesa based 
interface. all of which is running on a 5 volt 5 amp supply, max 30 
watts drain IOW.

All I really want is the -wall broadcast from nut telling me its on 
standby power, and back on wall power 5 or 6 seconds later.

But on a reboot, I have to start nut manually.  So what I want to know is 
what to do, in which rc#.d to start nut automatically at reboot time. 

Its running on the raspbian clone of buster, all uptodate except the 
kernel and its libs, which have been replaced by a locally built 
preempt-rt kernel and protected from apt upgrades which would destroy 
its real time performance.

The ups is working great, all I want is nut running and tracking the 
failures.  Local power hasn't historically been as dependable as I'd 
like, and my installing a 20kw standby was in self defense since the 
missus has COPD and a long power failure killing her oxygen generator 
might have put a ~30~ on her story.  She is now in a rest home till 
whenever? telinit says its obsolete, see systemd and systemctl.  And
I'm green yet at that stuff.


Cheers, Gene Heskett
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
If we desire respect for the law, we must first make the law respectable.
 - Louis D. Brandeis
Genes Web page <http://geneslinuxbox.net:6309/gene>

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