[Nut-upsuser] ordered shutdown

[Douglas Parsons]

Lars,

The win client includes several timers that can be used to simulate what you
seek. There is a timer that can be set to cause the server to shut down
after X minutes on battery. You can set this to the needed times giving you
the sequencing you are looking for. The down side is the issue of mid
shutdown recovery. On a large UPS system with the windows client you have to
cycle power to the server to get it to reboot. Unless you have a way to
switch off the output that the server is on, you will have to continue the
shutdown of the entire system and then trigger a restart of the UPS unit OR
require manual intervention. This is exactly the point I am facing in my
system. At this point we are concerned with a clean shutdown and are willing
to do a manual restart.

I have about 50 ups units on campus and monitor them all with one NUT
server. All of the windows clients then talk to that one master server to
get the status to it's UPS unit.

Mine is still a work in progress and has many things left to fix.

Doug

On Fri, Jan 30, 2009 at 7:32 AM, Lars Täuber <taeuber at bbaw.de> wrote:

> Hallo there.
>
> I'm new to this list and also to NUT.
> Our previous ups-system was APC based and apcupsd was serving the ordered
> shutdowns in our network.
>
> Our new ups is made by MGE and that's why we can't use apcupsd anymore.
> This led us into trouble.
> Our network system is quite complex and we need shutdown sequence levels.
> The servers depend on each other because of NFS and SQL connections and the
> like.
> We have one 60kVA UPS and more than 20 servers/routers/SANs supplied with
> energy by it.
>
> With apcupsd we could confiure the servers to shutdown on a specified
> battery level or the remaining time. Is there a way to do this with NUT
> anyhow?
> I thought about using the schedule mechanism with own bash scripts but this
> won't work on windows. In the docs is nothing written about such a feature.
> BTW, is there a feature request website for NUT somewhere?
>
> Thanks
> Lars
>
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