Nut upsuser - Jul 2016 - Best practice to shutdown hosts which has not NUT via upssched

Hi

?? I need to shutdown a number of hosts which has not NUT from one which has it.

?? I tried to do it from upssched script (after upssched's timer) like this:

case $1 in
??????? earlyshutdown)
??????????????? logger -t upssched-cmd "Early shutdown is started"
??????????????? /bin/sh /usr/local/sbin/shutdown-all-hosts.sh
??????????????? /usr/local/sbin/upsmon -c fsd
??????????????? ;;
esac

?? shutdown-all-hosts.sh contains:
# Linux hosts
HOSTLIST="sim iogate br"
for host in $HOSTLIST
do
...
???? ssh $host halt -p
...
done
# Windows hosts
ssh shut at com "shutdown -s -t 0"

?? shutdown-all-hosts.sh works fine if it runned manually.
?? But it does not work even if I insert sleep 30 sec before upsmon -c fsd
?? Also I read somewhere that it is not a good idea to shutdown other hosts from
the CMDSCRIPT.

?? Does anyone know how to shutdown hosts without NUT from a host with NUT?

Thanks in advance
Dmitri Stepanov
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Hi

?? I need to shutdown a number of hosts which has not NUT from one which has it.

?? I tried to do it from upssched script (after upssched's timer) like this:

case $1 in
??????? earlyshutdown)
??????????????? logger -t upssched-cmd "Early shutdown is started"
??????????????? /bin/sh /usr/local/sbin/shutdown-all-hosts.sh
??????????????? /usr/local/sbin/upsmon -c fsd
??????????????? ;;
esac

?? shutdown-all-hosts.sh contains:
# Linux hosts
HOSTLIST="sim iogate br"
for host in $HOSTLIST
do
...
???? ssh $host halt -p
...
done
# Windows hosts
ssh shut at com "shutdown -s -t 0"

?? shutdown-all-hosts.sh works fine if it runned manually.
?? But it does not work even if I insert sleep 30 sec before upsmon -c fsd
?? Also I read somewhere that it is not a good idea to shutdown other hosts from
the CMDSCRIPT.

?? Does anyone know how to shutdown hosts without NUT from a host with NUT?

Thanks in advance
Dmitri Stepanov

On Wed, 13 Jul 2016, Dmitri Stepanov wrote:
> Hi
>
> ?? I need to shutdown a number of hosts which has not NUT from one which
has it.
>
> ?? I tried to do it from upssched script (after upssched's timer) like
this:
>
> case $1 in
> ??????? earlyshutdown)
> ??????????????? logger -t upssched-cmd "Early shutdown is
started"
> ??????????????? /bin/sh /usr/local/sbin/shutdown-all-hosts.sh
> ??????????????? /usr/local/sbin/upsmon -c fsd
> ??????????????? ;;
> esac
>
> ?? shutdown-all-hosts.sh contains:
> # Linux hosts
> HOSTLIST="sim iogate br"
> for host in $HOSTLIST
> do
> ...
> ???? ssh $host halt -p
> ...
> done
> # Windows hosts
> ssh shut at com "shutdown -s -t 0"
>
> ?? shutdown-all-hosts.sh works fine if it runned manually.
> ?? But it does not work even if I insert sleep 30 sec before upsmon -c fsd
When you say "it does not work", what are the symptoms? Does 
shutdown-all-hosts.sh get called?
> ?? Also I read somewhere that it is not a good idea to shutdown other hosts
from the CMDSCRIPT.
The User Manual chapter 7.2:

<< It?s not a good idea to call your system?s shutdown routine directly 
from the CMDSCRIPT, since there?s no synchronization with the slave 
systems hooked to the same UPS. FSD is the master?s way of saying "we?re 
shutting down now like it or not, so you?d better get ready". >> 
http://networkupstools.org/docs/user-manual.chunked/ar01s07.html

If you want to shutdown your slave systems siom, iogate and br from the 
CMDSCRIPT, you will need to reproduce the NUT protocol of "slaves
first",
then the master.  Your current protocol does not check that the slaves are 
indeed shutting down.

Roger

On 07/13/2016 04:17 AM, Dmitri Stepanov wrote:
>    I need to shutdown a number of hosts which has not NUT from one which
has it.
Let's make sure you are not missing an obvious point.  By "has not
NUT",
you might mean not running upsd.  The best practice is to run upsmon on
the other hosts.  This does not require running NUT proper (server).  Is
there some reason why you can't run upsmon on the other hosts? 
Typically, upsd and drivers are packaged as something like
"nut-server",
whereas upsmon is packaged as "nut-client".