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{{DISPLAYTITLE:Monitoring bandwith of containers}}
Use the /proc/dev/net inside a container, dump stats into a round robin database (rrd)
<pre>
#!/bin/bash
#
# Bandwidth collection script for OpenVZ by Eric 'phpfreak' Rosebrock
# http://www.serverpowered.com / http://www.thewebfreaks.com
# Please read: http://www.serverpowered.com/openvz-bandwidth-accounting.php
#
#
# No warranties on this script, use it at your own risk!
#
# Special thanks to Rick Blundell for helping me to get this thing going.
#
# Discussions: http://forum.openvz.org/index.php?t=tree&goto=1350
# BWVE is the bandwidth storage VE. This would have been created by the
# tutorial you followed as listed above.
BWVE=1002
# BWDIR is the directory inside the bandwdith VE where the .rrd files
# will be stored.
BWDIR=var/rrd/vz
# You should not need to edit anything below this line.
# Get the date from the first of this month to create new rrd files
TDATE=`date +%Y-%m-01`;
ETIME=`date +%s -d $TDATE`
# Define the full path to the bandwidth VE directory and the storage dir.
CBWDIR=/vz/private/$BWVE/$BWDIR
# Test and make sure that directory is there, if not create it.
if ! test -d $CBWDIR; then
echo $CBWDIR does not exist, creating it.
mkdir $CBWDIR
fi
# Get a list of all of the VE's created on the system, not just the running ones.
for i in `ls $CBWDIR`; do
VES=`echo $i | cut -f2 -d- | cut -f1 -d.`;
# if the VE was there before, an .rrd file will exist. Now if the VE is gone,
# Delete the .rrd file because its obviously not needed anymore.
if ! test -d /vz/private/$VES; then
echo $i will be deleted
rm -rf $CBWDIR/vps-$VES.rrd
fi
done
# Time to do the data collection.
for i in `/usr/sbin/vzlist -Ho veid`; do
RRDFILE=$CBWDIR/vps-$i.rrd
if ! test -e $RRDFILE; then
echo $RRDFILE does not exist, creating.
/usr/bin/rrdtool create $RRDFILE -s 300 \
DS:ds0:DERIVE:600:0:1125000000 \
DS:ds1:DERIVE:600:0:1125000000 \
RRA:AVERAGE:0.5:1:600 \
RRA:AVERAGE:0.5:6:700 \
RRA:AVERAGE:0.5:24:775 \
RRA:AVERAGE:0.5:288:797 \
RRA:MAX:0.5:1:600 \
RRA:MAX:0.5:6:700 \
RRA:MAX:0.5:24:775 \
RRA:MAX:0.5:288:797 \
RRA:MIN:0.5:1:600 \
RRA:MIN:0.5:6:700 \
RRA:MIN:0.5:24:775 \
RRA:MIN:0.5:288:797
fi
X=`/usr/sbin/vzctl exec $i "grep venet0 /proc/net/dev"`
eval `echo $X | cut -f2 -d: | awk '{printf"IN=%-11d\nOUT=%-11d\n", $1, $9}'`
for g in IN OUT;do
if [ -z ${!g} ]; then
echo foo
eval $g=0
fi
done
/usr/bin/rrdtool update $RRDFILE N:$IN:$OUT
done
</pre>
[[Category: HOWTO]]
[[Category: Monitoring]]
Use the /proc/dev/net inside a container, dump stats into a round robin database (rrd)
<pre>
#!/bin/bash
#
# Bandwidth collection script for OpenVZ by Eric 'phpfreak' Rosebrock
# http://www.serverpowered.com / http://www.thewebfreaks.com
# Please read: http://www.serverpowered.com/openvz-bandwidth-accounting.php
#
#
# No warranties on this script, use it at your own risk!
#
# Special thanks to Rick Blundell for helping me to get this thing going.
#
# Discussions: http://forum.openvz.org/index.php?t=tree&goto=1350
# BWVE is the bandwidth storage VE. This would have been created by the
# tutorial you followed as listed above.
BWVE=1002
# BWDIR is the directory inside the bandwdith VE where the .rrd files
# will be stored.
BWDIR=var/rrd/vz
# You should not need to edit anything below this line.
# Get the date from the first of this month to create new rrd files
TDATE=`date +%Y-%m-01`;
ETIME=`date +%s -d $TDATE`
# Define the full path to the bandwidth VE directory and the storage dir.
CBWDIR=/vz/private/$BWVE/$BWDIR
# Test and make sure that directory is there, if not create it.
if ! test -d $CBWDIR; then
echo $CBWDIR does not exist, creating it.
mkdir $CBWDIR
fi
# Get a list of all of the VE's created on the system, not just the running ones.
for i in `ls $CBWDIR`; do
VES=`echo $i | cut -f2 -d- | cut -f1 -d.`;
# if the VE was there before, an .rrd file will exist. Now if the VE is gone,
# Delete the .rrd file because its obviously not needed anymore.
if ! test -d /vz/private/$VES; then
echo $i will be deleted
rm -rf $CBWDIR/vps-$VES.rrd
fi
done
# Time to do the data collection.
for i in `/usr/sbin/vzlist -Ho veid`; do
RRDFILE=$CBWDIR/vps-$i.rrd
if ! test -e $RRDFILE; then
echo $RRDFILE does not exist, creating.
/usr/bin/rrdtool create $RRDFILE -s 300 \
DS:ds0:DERIVE:600:0:1125000000 \
DS:ds1:DERIVE:600:0:1125000000 \
RRA:AVERAGE:0.5:1:600 \
RRA:AVERAGE:0.5:6:700 \
RRA:AVERAGE:0.5:24:775 \
RRA:AVERAGE:0.5:288:797 \
RRA:MAX:0.5:1:600 \
RRA:MAX:0.5:6:700 \
RRA:MAX:0.5:24:775 \
RRA:MAX:0.5:288:797 \
RRA:MIN:0.5:1:600 \
RRA:MIN:0.5:6:700 \
RRA:MIN:0.5:24:775 \
RRA:MIN:0.5:288:797
fi
X=`/usr/sbin/vzctl exec $i "grep venet0 /proc/net/dev"`
eval `echo $X | cut -f2 -d: | awk '{printf"IN=%-11d\nOUT=%-11d\n", $1, $9}'`
for g in IN OUT;do
if [ -z ${!g} ]; then
echo foo
eval $g=0
fi
done
/usr/bin/rrdtool update $RRDFILE N:$IN:$OUT
done
</pre>
[[Category: HOWTO]]
[[Category: Monitoring]]