Mod rrdtool » History » Revision 13
Revision 12 (Anonymous, 2008-02-10 02:27) → Revision 13/19 (Anonymous, 2008-03-14 09:05)
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{{{
#!rst
=======
rrdtool
=======
-------------------
Module: mod_rrdtool
-------------------
.. 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://oss.oetiker.ch/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
=================
Four things must be done to generate graphs:
1. Enable the mod_rrdtool in lighttpd.conf (as above)
**Alternative**: Instead of the following three steps (2,3,4), just use `lightygraph.cgi <http://trac.lighttpd.net/trac/attachment/wiki/Docs/ModRRDTool/lightygraph.cgi>`_ to automatically generate the graphs as needed -- on the fly!
2. Create/Edit the script provided below (as it generates the graphs).
I call it rrdtool.sh, make sure you have eXecute permissions on it (chmod +x)
3. Create an HTML page to output the images (provided at the end bottom)
4. Run the script and add to Cron.
0,20,40 * * * * nice -n 10 /etc/lighttpd/rrdtool.sh >& /dev/null
Note: Ubuntu fiesty and later remove the & from >& above for cron to run.
/bin/sh is linked to /bin/dash and expects a file descriptor rather than
a path to send the output to. (bad fd error otherwise)
::
#!/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=binmax,binmin,- \
CDEF:boutminmax=boutmax,boutmin,- \
AREA:binmin#ffffff: \
STACK:binminmax#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 $DISP
}}}
'''This script outputs better res graphics'''
{{{
#!/bin/sh
RRDTOOL=/usr/bin/rrdtool
OUTDIR=/var/www/www.example.com/rrd/
INFILE=/var/www/lighttpd.rrd
OUTPRE=lighttpd-traffic
WIDTH=600
HEIGHT=350
DISP="-v bytes --title TrafficWebserver \
DEF:binraw=$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#efb71d: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 -w $WIDTH -h $HEIGHT
$RRDTOOL graph $OUTDIR/$OUTPRE-day.png -a PNG --start -86400 $DISP -w $WIDTH -h $HEIGHT
$RRDTOOL graph $OUTDIR/$OUTPRE-month.png -a PNG --start -2592000 $DISP -w $WIDTH -h $HEIGHT
OUTPRE=lighttpd-requests
DISP="-v req --title RequestsperSecond -u 1 \
DEF:req=$INFILE:Requests:AVERAGE \
DEF:reqmax=$INFILE:Requests:MAX \
DEF:reqmin=$INFILE:Requests:MIN \
CDEF:reqminmax=reqmax,reqmin,- \
AREA:reqmin#ffffff: \
STACK:reqminmax#00f000: \
LINE1:reqmin#a0a0a0: \
LINE1:reqmax#a0a0a0: \
LINE2:req#00a735:requests"
$RRDTOOL graph $OUTDIR/$OUTPRE-hour.png -a PNG --start -14400 $DISP -w $WIDTH -h $HEIGHT
$RRDTOOL graph $OUTDIR/$OUTPRE-day.png -a PNG --start -86400 $DISP -w $WIDTH -h $HEIGHT
$RRDTOOL graph $OUTDIR/$OUTPRE-month.png -a PNG --start -2592000 $DISP -w $WIDTH -h $HEIGHT
}}}
'''Webpage that outputs the graphics'''
{{{
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>Lighttpd traffic & requests</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<meta http-equiv="content-style-type" content="text/css">
<style type="text/css">
<!--
div { text-align:center; }
img { width:693px; height:431px; }
-->
</style>
</head>
<body>
<div>
<h2>Lighttpd Traffic</h2>
<img src="lighttpd-traffic-hour.png" alt="graph1"><br>
<img src="lighttpd-traffic-day.png" alt="graph2"><br>
<img src="lighttpd-traffic-month.png" alt="graph3"><br>
</div>
<div> </div>
<h2>Lighttpd Requests</h2>
<img src="lighttpd-requests-hour.png" alt="graph4"><br>
<img src="lighttpd-requests-day.png" alt="graph5"><br>
<img src="lighttpd-requests-month.png" alt="graph6"><br>
</div>
</body>
</html>
}}}