[rrd-users] Re: Finally Success wtih mrtg, 14all.cgi and RRD!

Tue Dec 30 15:21:47 MET 2003

Mike-

14all.cgi is a server-side script. When you put your script tags in the
web page, you're asking the webbrowser to execute it locally, which is
impossible. 14all.cgi doesn't do well with server-side includes, either.
Your easiest option would be to make it the target of a link or a frame.
You could also use it as an IFRAME target or have a hyperlink open it in a
new window.

Hope that helps,

-Jon Hartman

-----Original Message-----
From: rrd-users-bounce at list.ee.ethz.ch
[mailto:rrd-users-bounce at list.ee.ethz.ch] On Behalf Of Mike Prezbindowski
Sent: Monday, December 29, 2003 5:54 PM
To: rrd-users at list.ee.ethz.ch
Subject: [rrd-users] Finally Success wtih mrtg, 14all.cgi and RRD!

Thanks for the help everyone.  Your emails were invaluable in learning
these tools.  I can now get the default 14all.cgi script running by itself
but I need to attach it to my IT web page.  I am running Win2k and IE 6.x.
When I embed the 14all.cgi script in a web page it just doesn't do
anything.  Blank screen.  I tried adding <script>, </script> tags and
language="Perl" but no luck.  I know it works because I can call it from
the browers URL http://localhost/scripts/14all.cgi.

Anyone know how to get this to work inside a web page or how to call it
from a web page?

Mike Prezbindowski
IT Manager
Andrews Space, Inc.
505 5th Avenue South, Suite 300
Seattle, WA 98104
Office (206) 438-0617
Cell: (206) 499-0367
mailto:mprez at andrews-space.com
http://www.andrews-space.com/

 -----Original Message-----
From: 	Graeme Donaldson [mailto:graeme at toxicbunny.net] 
Sent:	Friday, December 05, 2003 3:24 AM
To:	rrd-users at list.ee.ethz.ch
Subject:	[rrd-users] Re: Monitoring System Load (graphing it)

David Jenkins said:
> Hi,
>
> I've been using MRTG for a while and now have decided to have a play 
> around with rrdtool.
>
> I have currently set it up (correctly I believe) to monitor the volume 
> of network interface traffic on my server and am now trying to work 
> out how to monitor the load on the server.
>
> I have searched the web and found many graphs displaying this data but 
> have yet to come across the commands used to create the .rrd file and 
> make/update the graph.
>
> I have checked the mailing list here as well and found a useful thread 
> but it wasn't quite what I was looking for. I have also read "man 
> rrdtutorial" a couple of times but I do obviously not understand 
> something fundamental.
>
> I would be most grateful if someone could give me some help/pointers 
> as to where I'm going wrong.

This is how I do it.  I don't store the 1-min avg since I only do the
update every 5 minutes and it wouldn't really make much sense to do so. 
Also, I'm not (currently) using SNMP to get the value, but it should be
fairly easy to modify to use SNMP.

*Create*

rrdtool create /var/db/rrd/loadavg.rrd \
  DS:5min:GAUGE:600:U:U   \
  DS:15min:GAUGE:600:U:U  \
  RRA:AVERAGE:0.5:1:576   \
  RRA:AVERAGE:0.5:6:672   \
  RRA:AVERAGE:0.5:24:744  \
  RRA:AVERAGE:0.5:288:732 \
  RRA:MAX:0.5:1:576       \
  RRA:MAX:0.5:6:672       \
  RRA:MAX:0.5:24:744      \
  RRA:MAX:0.5:288:732

*Update*

#!/usr/local/bin/bash
PATH=/bin:/usr/bin:/usr/local/bin

echo $(uptime | sed -e 's/^.*load average.*: //' -e 's/ //g' | \ awk -F,
"{ printf(\"update /var/db/rrd/loadavg.rrd N:%f:%f\", \$2, \$3)}")
| rrdtool -

*Graph*

#!/usr/local/bin/bash
PATH=/bin:/usr/bin:/usr/local/bin

tstamp=`date`
rrdtool graph /var/www/localhost/stats/loadavg-day.png \
  --start now-1day \
  --vertical-label "Load averages" \
  --title "Load averages for the past day" \
  --width 600 \
  --height 200 \
  --alt-autoscale-max \
  --lower-limit 0 \
  DEF:5minavg=/var/db/rrd/loadavg.rrd:5min:AVERAGE \
  AREA:5minavg#0000dd:"5-min load avgs" \
  GPRINT:5minavg:AVERAGE:"Avg\:%3.2lf" \
  GPRINT:5minavg:MAX:"Max\:%3.2lf\n" \
  COMMENT:"$tstamp\r"

HTH
Graeme

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