Editing Traffic accounting through proc
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Traffic Accounting through /proc/net/dev | Traffic Accounting through /proc/net/dev | ||
| − | == | + | {|border="0" align="right" |
| − | + | |- | |
| − | + | |__TOC__ | |
| + | |} | ||
| − | = | + | =Introduction= |
| − | + | Traffic accounting in OpenVZ can be done through data collection against /proc/net/dev in the individual VEs on a HN. | |
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| − | == Script | + | =Prerequisites= |
| + | * OpenVZ | ||
| + | * RRDTool | ||
| + | * Gnu AWK | ||
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| + | =Script= | ||
First create a directory to store your RRD files: | First create a directory to store your RRD files: | ||
| + | <code> | ||
# mkdir /var/lib/rrd/ | # mkdir /var/lib/rrd/ | ||
| + | </code> | ||
| − | + | The install this script: | |
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| − | # Time to do the data collection. | + | <code> |
| − | for veid in | + | #!/bin/sh |
| − | + | # Script Name: vz_direct_traffic_log | |
| − | + | # Author: "Brian Harrington, Alticon Inc" <bharrington@alticon.net> | |
| − | + | # Website: htty://www.alticon.net | |
| − | + | ||
| + | # Time to do the data collection. | ||
| + | for veid in `/usr/sbin/vzlist -o veid | grep -v VEID | sed 's/ //g'`; do | ||
| + | |||
| + | RRDFILE="/var/lib/rrd/$veid.rrd" | ||
| + | |||
| + | if ! test -e $RRDFILE; then | ||
| + | echo $RRDFILE does not exist, creating. | ||
| + | # Place your preferred RRD Creation command here | ||
| + | fi | ||
| + | |||
| + | # Parse out the inbound/outbound traffic and assign them to the corresponding variables | ||
| + | eval `/usr/sbin/vzctl exec $veid "grep venet0 /proc/net/dev" | \ | ||
| + | awk -F: '{print $2}' | awk '{printf"VEIN=%-15d\nVEOUT=%-15d\n", $1, $9}'` | ||
| + | |||
| + | #Send the data to the corresponding RRD time with (N)now as the update time | ||
| + | /usr/bin/rrdtool update $RRDFILE N:$VEIN:$VEOUT | ||
| + | done | ||
| + | </code> | ||
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| − | + | =Setup= | |
| − | + | Add this to cron to run every 5 minutes: | |
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| + | <code> | ||
| + | # cat "*/5 * * * * root /path/to/script/vz_direct_traffic_log " > /etc/crontab && /etc/init.d/crontab restart | ||
| + | </code> | ||
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To check the output of this later run: | To check the output of this later run: | ||
# rrdtool fetch /var/lib/rrd/<veid>.rrd AVERAGE -s -3600 | # rrdtool fetch /var/lib/rrd/<veid>.rrd AVERAGE -s -3600 | ||
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