Revision 14 - History - Mod rrdtool - Lighttpd - lighty labs

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Revision 13 (Anonymous, 2008-03-14 09:05) → Revision 14/19 (Anonymous, 2008-06-16 03:31)

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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 &amp; 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> 
         <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> 
 }}} 

 = Problems = 


       * is has a pipe open all the time 
       * it doesn’t handle a restart 
       * doesn’t work with max-worker 

 from http://blog.lighttpd.net/articles/2007/04/10/about-perfection-deprecacting-mod_rrdtool

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Mod rrdtool » History » Revision 14