[Nut-upsuser] upsmon shutdown based on Time since power fail.

[Jon Bendtsen]

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
>>
>
>