On Tue, Mar 19, 2013 at 12:44 PM, Fred Smith fredex@fcshome.stoneham.ma.uswrote:
On Tue, Mar 19, 2013 at 11:10:07AM -0400, m.roth@5-cent.us wrote:
Fred Smith wrote:
Hi, trying to figure out how the system manages UPS connections. On
both
Centos 5.9 and 6.4, merely plugging in a USB UPS device causes an icon to appear in the top panel, and (at least on 5.9, haven't yet tested this in 6.4) when the UPS suffers a power failure the system notices and after a bit does a clean shutdown.
Interesting.... I haven't observed this behavior; certainly not on headless servers, though most are on UPSes; nor, when I had a working UPS for my workstation, have I seen it. Are you running gnome or KDE?
All this without installing ANYTHING extra.
You mean, like apcupsd?
Yes, nor "nut" either.
http://www.networkupstools.org/
[ I had to look it up ... so hopefully this will help those other curious people out there. ]
question #1: in 5.9 there are two entries in /etc/inittab, one for power fail and the other for power restoration. The default setting for the powerfail entry has it doing a shutdown in 2 minutes.
<snip> > message (when power fails) about the line being too long. So, I created > a shellscript that runs both the command to tell XP to go down,
followed
<snip> > When I run this script from the commandline it works just fine. but
when
I turn off input power to the UPS it starts the XP shutdown then
within
without waiting the specified length of time, initiates the shutdown of Linux. Once the shutdown is done, the UPS powers off, thereby
killing
the not-yet-shutdown windoze box.
Thinking about this as I write, I'd guess that it expects the machine *receiving* the shutdown to respect the five minute wait. What you might want to do is a sleep 300 before sending the command.
<snip>
just to be sure I'm clear: the shutdown command appears to be sent to windows, as I desire. then instead of honoring the "+5" in the local shutdown command it shuts down immediately.
but if I just run the identical script from a commandline it does exactly what I think it should: (1) tells windows to shut down then (2) waits 5 mins before shutting down Linux.
-- ---- Fred Smith -- fredex@fcshome.stoneham.ma.us----------------------------- "For him who is able to keep you from falling and to present you before his glorious presence without fault and with great joy--to the only God our Savior be glory, majesty, power and authority, through Jesus Christ our Lord, before all ages, now and forevermore! Amen."
----------------------------- Jude 1:24,25 (niv)
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