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RE: Problem stopping services

From: Benjamin Krajmalnik
Subject: RE: Problem stopping services
Date: Thu, 24 Mar 2011 14:36:01 -0600

Hello Martin,


I made the changes per your request.

The monit_stop.out file was created but it is empty.

Stop command failed to stop the service.


The section from monitrc follows:


  check process staledaemon with pidfile /var/run/

    start program = "/root/ staledaemon" with timeout 60 seconds

    stop program  = "/usr/local/bin/bash -c '/root/ staledaemon >> /tmp/monit_stop.out 2>&1' "

    if cpu > 60% for 2 cycles then alert

    if cpu > 80% for 5 cycles then alert

    if cpu > 80% for 5 cycles then restart

    if loadavg(5min) greater than 16 for 8 cycles then alert

    if loadavg(5min) greater than 16 for 10 cycles then restart

    if children < 2 for 2 cycles then restart


Previously I had been using webmin to monitor the processes, and everything worked fine with it.  I decided to move to monit because if the higher granularity and functionality.  I am running the tests every 30 seconds.  Also, I have one test which monitors a process by name which seem to think the process is going down – not certain if it is or not, still checking.  In this case the process is pgagent (the PostgreSQL agent).  I had never seen it go down before, so will do more checks, but I had seen a thread concerning some issues with monitoring a process by name.




From: address@hidden [mailto:address@hidden On Behalf Of Martin Pala
Sent: Tuesday, March 22, 2011 2:07 AM
To: This is the general mailing list for monit
Subject: Re: Problem stopping services




please can you add the start/stop statement which you use for the in monit configuration file?


You can log the script output this way:


stop program = "/bin/bash -c '/root/ staledaemon >>/tmp/monit_stop.out 2>&1'"







On Mar 22, 2011, at 12:36 AM, Benjamin Krajmalnik wrote:

I am having a strange issue stopping a group of services (daemons written in PHP).

OS is FreeBSD 8.1, monit version is 5.2.4.


I have tried various approaches.

I tried running it through a which looks as follows:



#stop a php daemon


killstring="/bin/ps -aux | /usr/bin/grep ‘php $mydaemon’ | /usr/bin/grep -v stopdaemon | /usr/bin/grep -v grep | /usr/binawk ' {print \$2}' | /usr/bin/xargs /bin/kill -s KILL && sleep 10"

eval $killstring


Running this from the command line works fine.  Running it from within monit fails – not sure why.

Checking the processes which run as the stop script is called I see the following, which indicates it was called properly and with root access:


root      61480  0.6  0.0  8264  1784  ??  S     5:28PM   0:00.01 /bin/sh /root/ staledaemon

root      60597  0.0  0.1 99664 21116  ??  Ss    5:27PM   0:00.03 /usr/local/bin/php staledaemon.php

root      60598  0.0  0.1 99664 21200  ??  I     5:27PM   0:00.01 /usr/local/bin/php staledaemon.php

root      61620  0.0  0.1 99664 21204  ??  S     5:28PM   0:00.00 /usr/local/bin/php staledaemon.php


Launching the script from the command line works fine.  Any ideas will be deeply appreciated, since it is critical that I be able to stop the processes.

I monitor the number of processes which are running, and if they fall below a certain level I need to restart the service, since each process in the service has its own functionality.


Any assistance will be deeply appreciated.

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