Munin contributed plugins

#!/bin/sh

#

# Plugin to monitor CPU usage, for a selected set of processes. Tested on FreeBSD.

#

# Author: Erik Cederstrand

# Based on http://waste.mandragor.org/munin_tutorial/cpubyuser

# Thanks to Yann Hamon.

#

# Usage: Place in /usr/local/etc/munin/plugins/ (or link it there  using ln -s)

#        Add this to your /ur/local/etc/munin/plugin-conf.d/plugins.conf:

#       [cpubyproc]

#       env.procs httpd java

#

#    httpd and java being a list of the processes to monitor.

#

# Parameters understood:

#

#       config   (required)

#       autoconf (optional - used by munin-config)

#

#%# family=auto

#%# capabilities=autoconf

if [ "$1" = "autoconf" ] ; then 

    if [ -n "$procs" ] ; then

        echo "yes"

    else

        echo "\$procs not defined."

    fi

    exit

fi

if [ "$1" = "config" ] ; then

    echo "graph_args --base 1000 -r --lower-limit 0";

    echo "graph_title CPU usage, by process";

    echo "graph_category system";

    echo "graph_info This graph shows CPU usage, for monitored processes.";

        echo 'graph_vlabel %'

        echo 'graph_scale no'

        echo 'graph_period second'

    echo "graph_order $procs"

    FIRSTPROC=1;

    for proc in $procs; do  

        echo "${proc}.label $proc"

        echo "${proc}.info CPU used by process $proc"

        echo "${proc}.type GAUGE"

        if [ $FIRSTPROC -eq 1 ] ; then

            echo "${proc}.draw AREA"

            export FIRSTPROC=0;

        else    

            echo "${proc}.draw STACK"

        fi

    done ;

    exit

fi

for proc in $procs ; do {

    ps axo 'pcpu,comm' | grep "$proc" |

    awk '

    BEGIN {

        FS=" "

        CPU_PROC=0

    }

    {

        CPU_PROC+=$0

    }

    END { 

    print  "'$proc'.value "CPU_PROC

    }'  

}

done;