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=======
rrdtool
=======
-------------------
Module: mod_rrdtool
-------------------
:Author: Jan Kneschke
:Date: $Date: 2004/08/29 09:43:49 $
:Revision: $Revision: 1.1 $
:abstract:
mod_rrdtool is used to monitor the traffic and load on the webserver
.. meta::
:keywords: lighttpd, skeleton
.. contents:: Table of Contents
Description
===========
RRD_ is a system to store and display time-series data (i.e. network
bandwidth, machine-room temperature, server load average).
.. _RRD: http://people.ee.ethz.ch/~oetiker/webtools/rrdtool/
Options
=======
rrdtool.binary
path to the rrdtool binary
e.g.: ::
rrdtool.binary = "/usr/bin/rrdtool"
rrdtool.db-name
filename of the rrd-database. Make sure that <rrdtool.db-name> doesn't exist
before the first run, as lighttpd has to create the DB for you.
e.g.: ::
rrdtool.db-name = "/var/www/lighttpd.rrd"
Generating Graphs
=================
::
#!/bin/sh
RRDTOOL=/usr/bin/rrdtool
OUTDIR=/var/www/servers/www.example.org/pages/rrd/
INFILE=/var/www/lighttpd.rrd
OUTPRE=lighttpd-traffic
DISP="-v bytes --title TrafficWebserver \
DEF:binraw=$INFILE:InOctets:AVERAGE \
DEF:binmaxraw=$INFILE:InOctets:MAX \
DEF:binminraw=$INFILE:InOctets:MIN \
DEF:bout=$INFILE:OutOctets:AVERAGE \
DEF:boutmax=$INFILE:OutOctets:MAX \
DEF:boutmin=$INFILE:OutOctets:MIN \
CDEF:bin=binraw,-1,* \
CDEF:binmax=binmaxraw,-1,* \
CDEF:binmin=binminraw,-1,* \
CDEF:binminmax=binmaxraw,binminraw,- \
CDEF:boutminmax=boutmax,boutmin,- \
AREA:binmin#ffffff: \
STACK:binmax#f00000: \
LINE1:binmin#a0a0a0: \
LINE1:binmax#a0a0a0: \
LINE2:bin#a0a735:incoming \
GPRINT:bin:MIN:%.2lf \
GPRINT:bin:AVERAGE:%.2lf \
GPRINT:bin:MAX:%.2lf \
AREA:boutmin#ffffff: \
STACK:boutminmax#00f000: \
LINE1:boutmin#a0a0a0: \
LINE1:boutmax#a0a0a0: \
LINE2:bout#a0a735:outgoing \
GPRINT:bout:MIN:%.2lf \
GPRINT:bout:AVERAGE:%.2lf \
GPRINT:bout:MAX:%.2lf \
"
$RRDTOOL graph $OUTDIR/$OUTPRE-hour.png -a PNG --start -14400 $DISP
$RRDTOOL graph $OUTDIR/$OUTPRE-day.png -a PNG --start -86400 $DISP
$RRDTOOL graph $OUTDIR/$OUTPRE-month.png -a PNG --start -2592000 $DISP
OUTPRE=lighttpd-requests
DISP="-v req --title RequestsperSecond -u 1 \
DEF:req=$INFILE:Requests:AVERAGE \
DEF:reqmax=$INFILE:Requests:MAX \
DEF:reqmin=$INFILE:Requests:MIN \
CDEF:reqminmax=reqmax,reqmin,- \
AREA:reqmin#ffffff: \
STACK:reqminmax#0e0e0e: \
LINE1:reqmin#a0a0a0: \
LINE1:reqmax#a0a0a0: \
LINE2:req#00a735:requests"
$RRDTOOL graph $OUTDIR/$OUTPRE-hour.png -a PNG --start -14400 $DISP
$RRDTOOL graph $OUTDIR/$OUTPRE-day.png -a PNG --start -86400 $DISP
$RRDTOOL graph $OUTDIR/$OUTPRE-month.png -a PNG --start -2592000 $DISP
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