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Re: [monit] Process without pidfile - cannot script

From: Martin Pala
Subject: Re: [monit] Process without pidfile - cannot script
Date: Fri, 12 Mar 2010 10:50:28 +0100

On Mar 12, 2010, at 1:36 AM, Adam Nielsen wrote:

>> yes, monit requires pidfile ... you can still watch the parent
>> process of smbd childs - the 'totalcpu' and 'totalmem' allows to
>> react to total cpu and memory usage of all smbd's sub-processes, the
>> 'children' statement allows to check sub-processes count.
> Ah ok, unfortunately that's not going to work too well as I don't want to 
> boot off all 50 users when only one has a problem.
> Is there any way I can say "only do it between 2am and 3am"?
> Thanks,
> Adam.

You can try something like this:

check process smbd with pidfile /opt/samba/var/locks/
  start program = "/etc/init.d/smbd start"
  stop  program = "/etc/init.d/smbd stop"
  if totalcpu > 90% for 5 cycles then exec "/bin/bash -c '/bin/ps -eo 
pcpu,pid,args | /usr/bin/awk '$0 ~ /smbd/ && $1 > 80 {print $2}' | xargs -i 
kill {}'"

=> if total cpu usage of smbd and all its sub-processes exceeds 90%, the exec 
script will kill all smbd processes which take more then 80% of cpu


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