Monitoring openvz resources using munin

2007-07-04T23:32:56Z

Pepa: /* munin plugin */

== munin plugin ==

The plugin listed below grabs all the bean counters' values.

<pre>#!/bin/sh
#
# plugin to monitor OpenVZ bean counters.
#
#
#%# family=auto
#%# capabilities=autoconf suggest

ATTR=`basename $0 | sed 's/^vebc_//g'`

if [ "$1" = "autoconf" ]; then
if [ -r /proc/bc/0/resources ]; then
echo yes
exit 0
else
echo "no (/proc/bc/0/resources not found)"
exit 1
fi
fi

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

if [ -r /proc/bc/0/resources ]; then
cat /proc/bc/0/resources |
while read str; do

vals=($str)
echo ${vals[0]}
done

exit 0
else
exit 1
fi
fi

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

# echo "graph_order down up"
echo "graph_title $ATTR beancounter for VE's"
echo 'graph_category system'
echo "graph_info 'VE bean counters info'"

for VEID in `ls -d1 /proc/bc/???`; do
id=`basename $VEID`
grep $ATTR $VEID/resources |
while read str; do

vals=($str)
name=${vals[0]}
echo ${id}.label $id
echo "${id}.warning ${vals[3]}"
echo "${id}.critical ${vals[4]}"
done
done

exit 0
fi;

for VEID in `ls -d1 /proc/bc/???`; do
id=`basename $VEID`
grep $ATTR $VEID/resources |
while read str; do

vals=($str)
name=${vals[0]}
echo "$id.value ${vals[1]}"
done
done

</pre>

Please note, you have to configure plugin to run as root:

<code>
[vebc*]
user root
</code>

at /etc/munin/plugin-conf.d/ somewhere.

Extended Version for old system using user_beancounter.

Put it with the munin plugins and make a link for every
graph which should be produced named like:

vebc_VALUENAME1_VALUENAME2_..._VEID

e.g.: vebc_numflock_numpty_numsiginfo_101

<pre>
#!/bin/sh
#
# plugin to monitor OpenVZ bean counters.
#
#
#%# family=auto
#%# capabilities=autoconf suggest

ATTR=`basename $0 | sed -e 's/^vebc_.*_//'`
STATS=`basename $0 | sed -e 's/^vebc_//' -e 's/_[0-9]*$//' -e 's/_/ /g'`

if [ "$1" = "autoconf" ]; then
if [ -r /proc/bc/0/resources ]; then
echo yes
exit 0
else
echo "no (/proc/bc/0/resources not found)"
exit 1
fi
fi

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

if [ -r /proc/bc/0/resources ]; then
cat /proc/bc/0/resources |
while read str; do

vals=($str)
echo ${vals[0]}
done

exit 0
else
exit 1
fi
fi

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

# echo "graph_order down up"
echo "graph_title beancounter for VE$ATTR: $STATS"
echo "graph_category VE$ATTR"
echo "graph_info 'VE bean counters info'"

readme="false"
cat /proc/user_beancounters | while read myid stuff; do

line=""

if [ "$myid" == "$ATTR:" ]; then

readme="true"
line="$stuff"
echo $line
else

loid=`echo $myid | sed -e 's/.*:/:/'`

if [ "$loid" == ":" ]; then

readme="false"
fi
if [ "$readme" == "true" ]; then

line="$myid $stuff"
echo $line
fi
fi

done | while read name value top warn max; do

okname="dummy"

for statname in $STATS; do

if [ "$name" == "$statname" ]; then

okname=$name
fi

done

if [ "$okname" != "dummy" ]; then

echo $okname.label $name
echo $okname.warning $warn
echo $okname.critical $max
fi
done

exit 0
fi;

readme="false"
cat /proc/user_beancounters | while read myid stuff; do

line=""

if [ "$myid" == "$ATTR:" ]; then

readme="true"
line="$stuff"
echo $line
else

loid=`echo $myid | sed -e 's/.*:/:/'`

if [ "$loid" == ":" ]; then

readme="false"
fi

if [ "$readme" == "true" ]; then

line="$myid $stuff"
echo $line
fi
fi
done | while read name value x; do

okname="dummy"

for statname in $STATS; do

if [ "$name" == "$statname" ]; then

okname=$name
fi
done

if [ "$okname" != "dummy" ]; then

echo $okname.value $value
fi

done

</pre>

This is not too performant but should do and the graphs are much
more readable then the first solution.

OpenVZ Virtuozzo Containers Wiki - User contributions [en]

Monitoring openvz resources using munin