Changes

Traffic accounting through proc

6 bytes added, 21:44, 19 November 2007

categorized; removed unneeded 'code' tags, use -H in vzlist; get rid of first-level headings

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==Introduction==Traffic accounting in OpenVZ can be done through data collection against <code>/proc/net/dev </code> in the individual VEs on a HN.

==Prerequisites== * OpenVZ * RRDTool * ~~Gnu~~ GNU AWK

==Script==

First create a directory to store your RRD files:

~~<code>~~

# mkdir /var/lib/rrd/

~~</code>~~

~~The~~ Then install this script:

~~<code>~~

#!/bin/sh

# Script Name: vz_direct_traffic_log

# Time to do the data collection.

for veid in `/usr/sbin/vzlist -o veid ~~| grep~~ -~~v VEID~~ H | sed 's/ //g'`; do

RRDFILE="/var/lib/rrd/$veid.rrd"

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>~~

==Setup==

Add this to cron to run every 5 minutes:

~~<code>~~ # cat "*/5 * * * * root /path/to/script/vz_direct_traffic_log " > \ /etc/crontab && /etc/init.d/crontab restart~~</code>~~

To check the output of this later run:

# rrdtool fetch /var/lib/rrd/<veid>.rrd AVERAGE -s -3600

~~__NOEDITSECTION__~~[[Category: Monitoring]][[Category: Networking]]

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