Nut upsuser - Dec 2018 - battery.runtime

First time poster but I've been using NUT periodically for a long time. 

I was looking for a way to initiate a shutdown on servers when UPS battery
runtime drops to a certain threshold. I never found a published way after much
searching.

I have upsmon running mostly for the email notifications and removed the
shutdowncmd command to keep it from running. Rather I'm using a cron job
script for "upsc ups at ip.add.rr.ess battery.runtime" to capture the
battery capacity and then execute a shutdown when it reaches a trigger.

This solution fits my needs because some servers need to power down before
others (apps before storage).

Even in FreeNAS I've decided to use the when "UPS goes on battery"
timer with a ridiculously large number that can never be reached, and a dummy
shutdown command, just to let the cron job do the shutdown.

Is there another way? 
Is this a sane method? 
Is this a feature that can be requested? 

Thanks 
Danny 


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On Dec 4, 2018, at 10:12 AM, Danny Siminiuk <daniel at siminiuk.com>
wrote:
> 
> First time poster but I've been using NUT periodically for a long time.
> 
> I was looking for a way to initiate a shutdown on servers when UPS battery
runtime drops to a certain threshold. I never found a published way after much
searching.
> 
> 
Does “ignorelb” do what you need? See the description here:
https://networkupstools.org/docs/man/ups.conf.html
> 
> _______________________________________________
> Nut-upsuser mailing list
> Nut-upsuser at alioth-lists.debian.net
> https://alioth-lists.debian.net/cgi-bin/mailman/listinfo/nut-upsuser
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Hi Charles, 

I don't think "ignorelb" will work in my case because that is set
on the master. I am using the nut package in pfSense as the master and I want
pfSense to shutdown on LOWBATT as designed.

I tried using upssched.conf with timers on the netclients but that's not
appropriate because ONBATT by itself doesn't tell you how much capacity
remains in the UPS. You still need to invoke a script to check.

The netclients are what I need shutdown in a particular order. 

I'm currently using upsc to get ups.status = "OB" and
battery.runtime < n (seconds).

My UPS has about 16 minutes capacity when fully charged and a 19% load with all
hardware on.
8 minutes remaining (battery.runtime <= 480) shut down VMs and hypervisors
(clients).
5 minutes remaining (battery.runtime <= 300) shut down FreeNAS (client). 
2 minutes remaining LOWBATT shut down the master. 

Even if it's a kludge I guess it gets the job done. I was looking for native
support for battery.runtime triggers.

Thanks 
Danny 


From: "Charles Lepple" <clepple at gmail.com> 
To: "Danny Siminiuk" <daniel at siminiuk.com> 
Cc: "nut-upsuser" <nut-upsuser at alioth-lists.debian.net> 
Sent: Tuesday, December 4, 2018 12:07:48 PM 
Subject: Re: [Nut-upsuser] battery.runtime 

On Dec 4, 2018, at 10:12 AM, Danny Siminiuk < [ mailto:daniel at siminiuk.com
| daniel at siminiuk.com ] > wrote:




First time poster but I've been using NUT periodically for a long time. 

I was looking for a way to initiate a shutdown on servers when UPS battery
runtime drops to a certain threshold. I never found a published way after much
searching.





Does “ignorelb” do what you need? See the description here: [
https://networkupstools.org/docs/man/ups.conf.html |
https://networkupstools.org/docs/man/ups.conf.html ]


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