Date: Fri, 11 Jan 2008 09:19:54 -0600 From: Derek Ragona <derek@computinginnovations.com> To: "Derrick Ryalls" <ryallsd@gmail.com>, "Kurt Buff" <kurt.buff@gmail.com> Cc: Bob Johnson <fbsdlists@gmail.com>, FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: Nut and RAID on FreeBSD 7.0 Message-ID: <6.0.0.22.2.20080111090620.0245e338@mail.computinginnovations.com> In-Reply-To: <d5eb95fc0801102343m7cf7cb3ckf78c0b0e694d3959@mail.gmail.co m> References: <d5eb95fc0801091651h1788afd1m256a824e4722906d@mail.gmail.com> <6.0.0.22.2.20080110025841.023a9bb8@mail.computinginnovations.com> <d5eb95fc0801101140w717095dfhed569274c261e4a6@mail.gmail.com> <6.0.0.22.2.20080110155430.023d29d8@mail.computinginnovations.com> <d5eb95fc0801101443l6b4cd69do6d69d5b90cd91702@mail.gmail.com> <54db43990801101514y317a2889l7ad18fa4ffce56be@mail.gmail.com> <a9f4a3860801101552p1f82abddnce1ba982ea791ba8@mail.gmail.com> <d5eb95fc0801102343m7cf7cb3ckf78c0b0e694d3959@mail.gmail.com>
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At 01:43 AM 1/11/2008, Derrick Ryalls wrote:
>On Jan 10, 2008 3:52 PM, Kurt Buff <kurt.buff@gmail.com> wrote:
> >
> > On Jan 10, 2008 3:14 PM, Bob Johnson <fbsdlists@gmail.com> wrote:
> > > On 1/10/08, Derrick Ryalls <ryallsd@gmail.com> wrote:
> > >
> > > >
> > > > Perhaps I need to re-evaluate my line of thinking. Light sometime
> > > > flicker, but power almost never goes out. When it does it is either
> > > > back on in less than 1 minute, or out for hours. If the UPS detects
> > > > critical correctly and gives me at least a minute before death, then
> > > > that should be plenty of time for the system to auto-shutdown. Guess
> > > > I will have to do some experimentation tonight.
> > >
> > > While you experiment, keep in mind the following sequence of events:
> > >
> > > -- Power fails
> > > -- UPS signals low battery
> > > -- System shuts down
> > > -- Power returns before UPS shuts itself down
> > > --> System never reboots, because it never lost power.
> > >
> > > Getting around this is the tricky part. I haven't used NUT in about
> > > seven years, but back then the recommendation was to shut down to
> > > single user mode and run a script that delayed for some time longer
> > > than the remaining battery life of the UPS, then rebooted the system.
> > > There didn't seem to be an easy hook for running a script after
> > > shutting down to single user mode (maybe there is now).
> > >
> > > I haven't looked at NUT recently, but I expect the various flags that
> > > you are supposed to test are another way around this problem.
> >
>
>Trying to test out the scripts, I ran into a road block. I see that
>upsmon is working and detecting the events I wanted to detect from
>these sorts of entries in /var/log/messages:
>
>Jan 10 23:28:57 frodo upsmon[80983]: UPS powercom@localhost on line power
>
>Plus a similar message for going to battery power. However, the
>notify executable is having issues and is dumping dozens of lines like
>this in /var/log/messages:
>
>Jan 10 23:28:09 frodo kernel: pid 81029 (upssched), uid 1005: exited
>on signal 11
>Jan 10 23:28:09 frodo kernel: pid 81031 (upssched), uid 1005: exited
>on signal 11
>Jan 10 23:28:10 frodo kernel: pid 81032 (upssched), uid 1005: exited
>on signal 11
>Jan 10 23:28:10 frodo kernel: pid 81033 (upssched), uid 1005: exited
>on signal 11
>Jan 10 23:28:11 frodo kernel: pid 81034 (upssched), uid 1005: exited
>on signal 11
>Jan 10 23:28:11 frodo kernel: pid 81035 (upssched), uid 1005: exited
>on signal 11
>
>I tried giving the user the user in question (nutmon) a shell of
>/bin/sh instead of /sbin/nologin but that didn't help. Any clues on
>how to fix this? Executing upssched from the command line it tells me
>not to execute directly (similar to what the man page states), and
>manually executing the upsched-cmd shell script does work and the
>script itself uses full paths for commands.
What is in your notify command?
I set my NOTIFYCMD in upsmon.conf to a simple shell script I created to
send the message via sendmail, here is my script if that helps:
============================================
#!/usr/local/bin/ksh
#set -x
SENDMAIL=/usr/sbin/sendmail
MAIL=/usr/bin/mail
HOSTNAME=/bin/hostname
MYHOSTNAME=`$HOSTNAME -s`
echo $* | $MAIL -s "UPS Alert from $MYHOSTNAME" upsmon@computinginnovations.com
================================================
-Derek
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