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I am fairly new to the world of AIX and would like to setup a simple
shell script to monitor my server's uptime. More specifically, I would
like to know when any of my servers have rebooted.

I have written a script to do this, basically using the uptime utility,
but I would like to know if there are any tools, such as Sun's kstat,
that will give me boot time statistics.

Here is what I am looking for, taken from a script on a Solaris box;

LASTBOOT=`/usr/bin/kstat | grep boot_time | awk '{print \$2}'`

This is the type of data that I am looking for;

$ /usr/bin/kstat | grep boot_time
boot_time 1100420233

I have read there is another utility similar on the AIX o/s - pstat. I
have looked at the man pages and done some searches on this, but I am
not seeing any syntax examples.

Thanks.

Bill

On 2005-01-31, BigBill <bill.scheuernstuhl@gmail.com> wrote:

> shell script to monitor my server's uptime. More specifically, I would
> like to know when any of my servers have rebooted.

Isn't it *much* simpler to just add something like:

echo "I've rebooted!" | mail admin@example.com

to the boot scripts?

--
Jurjen Oskam
"E-mail has just erupted like a weed, and instead of considering
what to say when they write, people now just let thoughts drool
out onto the screen." - R. Craig Hogan

BigBill wrote:
> I have read there is another utility similar on the AIX o/s - pstat. I
> have looked at the man pages and done some searches on this, but I am
> not seeing any syntax examples.
>
> Thanks.
>
> Bill
>

I suppose this will do:
maba:/home/maba > last reboot
reboot ~ Jan 18 17:58
reboot ~ Aug 12 09:56
...

Markus

This script is for Solaris based machines that I work with:

################################################## ##########
#
# Variable Definitions #
#
################################################## ##########

SERVER=`/usr/bin/hostname`
ERROR=/tmp/up_mon.err
FLAG=/tmp/up_mon.flag
LASTBOOT=`/usr/bin/kstat | grep boot_time | awk '{print \$2}'`
DATE=`/usr/local/bin/perl -e 'printf"%d\n", time;'`

################################################## ###########
#
# FUNCTION DEFINITION #
#
################################################## ###########

#Email script fail notice function
function messagenotice {
mailx -s "up_mon.ksh" user@noname.net < ${ERROR}
/usr/bin/rm ${ERROR}
exit 0
}

################################################## ###########
#
# EXECUTION #
#
################################################## ###########

#Check for flag
if [ -f ${FLAG} ]
then
let "ii = ${DATE} - `cat ${FLAG}`"
if [ ii -le 1800 ]
then
exit 0
else
/usr/bin/rm ${FLAG}
fi
fi

#Check to see if flag exists
if [ -f /usr/bin/kstat ]
then
echo kstat exists!
else
echo "kstat does not exist on ${SERVER}." > ${ERROR}
messagenotice
fi

#Check for reboot
let "i = ${DATE} - ${LASTBOOT}"

if [ ${i} -le 1800 ]
then
echo "Server ${SERVER} recently rebooted, please investigate."
> ${ERROR}
echo "`/usr/bin/who -b | awk '{print \$2,\$3,\$4,\$5,\$6}'`" >>
${ERROR}
echo ${DATE} > ${FLAG}
messagenotice
fi

exit 0


Instead of re-inventing the wheel, I would like to do exactly the same
thing.

Here is an example of what has been suggested...

################################################## #################
#
# Function Definition
#
################################################## #################

function errornotice {
mailx -s "{$hostname}" test@noname.net < ${ERROR}
/bin/rm -f ${ERROR}
exit 0
}

################################################## ################
#
# Script Execution
#
################################################## ################

uptime | grep days >> /dev/null
if [[ $? -eq 1 ]]; then
echo "System was booted less than 24 hours ago"
errornotice
else
echo "System has been up more than 24 hours."
exit
fi

HOURS=`uptime | awk '{print $3}' | cut -f1 -d:`
MINUTES=`uptime | awk '{print $3}' | cut -f2 -d: | cut -f1 -d,`

echo "The system has been up ${HOURS} hours and ${MINUTES} minutes."
if [[ ${HOURS} -lt 1 ]]; then
echo "The system was booted less than one hour ago. Take action now"
fi
if [[ ${MINUTES} -lt 30 && ${HOURS} -lt 1 ]]; then
echo "The system was booted less than 30 minutes ago. Take action
now"
fi

BigBill wrote:
> I am fairly new to the world of AIX and would like to setup a simple
> shell script to monitor my server's uptime. More specifically, I would
> like to know when any of my servers have rebooted.

The "last" command supplies information about reboots.

--
Gary R. Hook
__________________________________________________ ______________________
Vocatus atque non vocatus deus aderit

On 31 Jan 2005 10:44:05 -0800, "BigBill"
<bill.scheuernstuhl@gmail.com> wrote:

>I am fairly new to the world of AIX and would like to setup a simple
>shell script to monitor my server's uptime. More specifically, I would
>like to know when any of my servers have rebooted.
>
>I have written a script to do this, basically using the uptime utility,
>but I would like to know if there are any tools, such as Sun's kstat,
>that will give me boot time statistics.
>
>Here is what I am looking for, taken from a script on a Solaris box;
>
>LASTBOOT=`/usr/bin/kstat | grep boot_time | awk '{print \$2}'`
>
>This is the type of data that I am looking for;
>
>$ /usr/bin/kstat | grep boot_time
>boot_time 1100420233
>
>I have read there is another utility similar on the AIX o/s - pstat. I
>have looked at the man pages and done some searches on this, but I am
>not seeing any syntax examples.


who -b

Shows last boot time.