topic Re: Killing process in Operating System - HP-UX

Killing process

Darren Murray_1 — Thu, 22 Aug 2002 05:58:49 GMT

Hi,

I have a problem with users leaving a process behind if the application crashes. Once left behind this process chomps up cpu. The problem I have that a nightly job has the same process name so I need a script that will kill a process with the process name being mdb_x.27831 owned by any other username than qbdba.

The process is able to run for users other than qbdba but not for any longer than 60 minutes

I hope that makes sense.

Re: Killing process

Darren Murray_1 — Thu, 22 Aug 2002 06:02:11 GMT

Here is an example from top where you will see the same name but different user id's

The user whybroja should be killed

29896 whybroja 241 run 1563:34 98.81 98.64 mdb_x

13842 qbdba 148 20 5:13 10.26 10.24 mdb_x

Re: Killing process

Stefan Farrelly — Thu, 22 Aug 2002 06:12:07 GMT

Easy.
PID=$(ps -ef|grep mdb_x|grep -v grep|grep -v qbdba|awk '{print $2}')

Gives you the pid number to kill. It greps out the process owned by qbdba so if you have a runaway this will find it, then if the pid is non null kill it;

[ "$PID" -ne "" ] && kill $PID

Re: Killing process

Tom Geudens — Thu, 22 Aug 2002 06:18:10 GMT

Hi,
There are several good threads about how to go about killing processes. Example : http://forums.itrc.hp.com/cm/QuestionAnswer/1,,0xc8d7a135f587d5118ff00090279cd0f9,00.html

I found this thread by doing a search on the forums with keywords : "kill grep process".

Hope it helps,
Tom

Re: Killing process

Darren Murray_1 — Thu, 22 Aug 2002 06:21:01 GMT

Hi Stefan,

Thanks and I will assign points shortly!

This process can run for a time of about hour before you know that its a zombie.

How do I allow it to check that its been running for 60min + before killing it?

Cheers
Darren

Re: Killing process

Justo Exposito — Thu, 22 Aug 2002 06:21:02 GMT

Hi,

You can try this:

for i in $(ps -ef | grep "mbx_x*"| grep -v -e "qbdba" -e "grep" |sed -e 's/^/ /g' -e 's/\ \{1,\}/#/g' | cut -d"#" -f3)
do
echo $i
done

If all works, change the "echo $i" by "kill $i"

Regards,

Justo.

Re: Killing process

Paula J Frazer-Campbell — Thu, 22 Aug 2002 06:30:38 GMT

Hi Darren

This script looks for running heavy cpu time users of a particular type and Zaps them.

The line:-
if [ $cpu00 -gt 180 ] - sets the cpu usage before the kill is activated ??? adjust to suit.

It is not the tidiest script but it works.

Test it well before use and echo back results before unhashing the Kill line.

HTH

Paula

------------------------cut here--------------
# CONNECTION MONITORING /CONTROL #
###########################################################
#!/usr/bin/sh
# Get info on the users
# Change the grep to suit particular user
#
ps -ef | grep " mdb_x.27831" | grep whybroja | grep -v grep | awk '{print $2, $5, $7}' | while read pid time cpu
do
# Strip the ':'
cpu00=`echo $cpu | sed 's/://'`
time00=`echo $time | sed 's/://'`
time000=`echo $time00 | sed 's/://'`
currenttime=`date "+%H%M%S"`
#
# Calculate total time connected
timeon=`print $currenttime - $time000|bc`
echo $timeon
#
# CPU usage bit
# Cpu usage limit
if [ $cpu00 -gt 180 ]
then
# Gracefull kill
echo $pid

# kill $pid

# Stronger kill (If required)
# sleep 5
# kill -9 $pid
fi
done

------------------------------------------------

Re: Killing process

Paula J Frazer-Campbell — Thu, 22 Aug 2002 07:17:24 GMT

Darren

Welcome to the forum.

Paula