[Nut-upsuser] UPS Shutdown
roger at rogerprice.org
Thu Oct 6 09:35:12 UTC 2016
On Wed, 5 Oct 2016, Mike wrote:
> I have found the shutdown delay to be quite elusive within the NUT realm.
> I have asked for the kind folk of this mailing list to post those UPS's
> which actually can implement the shutdown delay concept. I have not seen
> anything posted, here or on the website, to that effect.
> Nor have I seen any manner of documentation in the various UPS profiles
> that would suggest whether or not a specific UPS actually obeys and
> complies with the shutdown delay concept.
> Something as critical as the shutdown delay should be so supremely
> documented that it is child's play. But it is not. It currently is
> wizardry, if it exists at all.
Hi Mike, The current NUT has evolved from a little documentation and a lot
of experimenting. As an example of the lack of manufacturer's
documentation, see Eaton's "POWER FAILURE SHUTDOWN TIMELINE" for their
This page, from a leading UPS manufactuer fails to document the offdelay,
which is hidden in the yellow bars labelled "System Shutdown". It does
succeed in describing the Power-On Delay.
It is not possible for NUT to take over the documentation of the
idiosyncracies of each UPS. All NUT can say is "Try this with your UPS".
However there is a need for a minimalist description of a working NUT
* A drawing and three sentences each to describe the NUT components
* A working example of a set of configuration files for a single
workstation which will shut down the workstation and the UPS when LB is
One sheet of A4. Or the electronic equivalent.
We are looking for a volunteer to draft this sheet :-)
Best Regards, Roger
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