[Nut-upsuser] upsmon shutdown based on Time since power fail.
Jon Bendtsen
jbendtsen at laerdal.dk
Mon May 25 12:20:47 UTC 2009
Hi
I am sorry, but i can not answer any of your technical NUT questions,
i just wrote with an idea that might or might not work.
As for starting the machine if power returns, then i can think of some
remote power management that can turn the power on/off to the machine
and then sit between the UPS and the machine(s). WAKE on LAN might be
an option too.
JonB
On 22/05/2009, at 03.07, Richard Chapman wrote:
> Thanks Jon
>
> This sounds like one way to do it. If I do it this way - do you know
> whether the file:
>
> /etc/killpower
>
> will be created before the shut-down is issued (as it would if the
> battery low event occurs). If not - the UPS may not be shut down -
> and therefore the system may not start up again if the power returns
> before the battery is completely flat.
>
> I guess if the flag file isn't created - then we could run a short
> script to create it - then issue the shut-down.... Does that sound
> right to you? Indeed - if we do write a short script - we could do
> the delay in the script - somehow test whether we are still on
> battery - and if so - issue the shut-down immediately.
>
> Out of interest - do you know what the ups parameter:
>
> battery.runtime: 120
>
> Means - and where might it be documented?
>
> Thanks Jon
>
>
> Richard.
>
>
> Jon Bendtsen wrote:
>> On 20/05/2009, at 12.11, Richard Chapman wrote:
>>
>>> For various reasons - I have been trying to get my Desktops and/or
>>> servers to shut-down a fixed time after a power fail - or better
>>> still a fixed time - or a low battery whichever comes first.
>>
>> [cuuuuut]
>>
>>> Is there another parameter somewhere - probably in upsmon - which
>>> would allow me to specify a shut-down after (say) 3 minutes
>>> running on battery regardless of battery status?
>>
>> In the upsmon.conf file you use NOTIFYCMD and ONBATT to execute a
>> shutdown $time
>>
>> Then you use a ONLINE to execute a -c to cancel a shutdown if the
>> power returns.
>>
>>
>>
>> JonB
>>
>
>
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