Using MRTG to monitor the performance on DELL switch

[NagiosNewbis]

Hi;

I am configuring the MRTG to monitor the performance of my DELL 3348 switch, after configured the MRTG on my Nagios Core server and running it with the following command.

/usr/local/mrtg-2/bin/cfgmaker --global 'WorkDir: /home/httpd/mrtg' --global 'Options[_]: bits,growright' --output /home/mrtg/cfg/mrtg.cfg snmp_community_name@ip_addr_of_monitored_switch

/usr/local/mrtg-2/bin/indexmaker --output=/var/www/mrtg/index.html /home/mrtg/cfg/mrtg.cfg

env LANG=C /usr/local/mrtg-2/bin/mrtg /home/mrtg/cfg/mrtg.cfg

then, I checked my /var/www/mrtg folder and open the index.html file on browser, I can see the link liked below but I do not see other files on my server such as 172.16.3.278_9-day.png.

How can I find those files and how can I integrate them to my Nagios config file to show them on Nagios site?

<tr>
<td><DIV><B>Traffic Analysis for 9 -- </B></DIV>
<DIV><A HREF="172.16.3.247_9.html"><IMG BORDER=1 ALT="172.16.3.247_9 Traffic Graph" SRC="172.16.3.247_9-day.png"></A><BR>
<SMALL><!--#flastmod file="172.16.3.247_9.html" --></SMALL></DIV>
</td><td><DIV><B>Traffic Analysis for 12 -- </B></DIV>
<DIV><A HREF="172.16.3.247_12.html"><IMG BORDER=1 ALT="172.16.3.247_12 Traffic Graph" SRC="172.16.3.247_12-day.png"></A><$
<SMALL><!--#flastmod file="172.16.3.247_12.html" --></SMALL></DIV>
</td></tr>

[sreinhardt]

Well to find them using the find or locate commands are your best bet.

Code: Select all

find "172.16.3.278_9-day.png" /
locate 172.16.3.278_9-day.png

However this sounds like it may be an issue with mrtg not getting the correct oid for the dell switch, and therefore not generating the rrd and png files.

[NagiosNewbis]

I found it under /home/httpd/mrtg folder, also I found those .log files either. I forgot to check my mrtg.cfg file in which I assigned "WorkDir: /home/httpd/mrtg" in file.

In my Nagios config file for the switch, I have this configured

define service{
use generic-service ; Inherit values from a template
host_name dell-sw-247
service_description Port 50 Bandwidth Usage
check_command check_mrtgtraf!/home/httpd/mrtg/172.16.3.247_50.log!AVG!1000000,1000000!5000000,5000000!10
}

But when I click on the service from Nagios webpage, I saw this error

"check_mrtgtraf: Unable to open MRTG log file"

can someone tell me why?

[NagiosNewbis]

I can browse the traffic analyze page from this link on server (file:///home//httpd/mrtg/172.16.3.247_49.html), but I cannot do it from my workstation using http://172.16.3.247/mrtg, any idea? But I can use http://172.16.3.247/nagios to see my Nagios page.

[scottwilkerson]

you likely need to create an apache config that looks something like this

Code: Select all

#
# This configuration file maps the mrtg output (generated daily)
# into the URL space.  By default these results are only accessible
# from the local host.
#
Alias /mrtg /home/httpd/mrtg

<Location /mrtg>
    Order allow,deny
    Allow from all
</Location>

Then restart apache

[NagiosNewbis]

thx! got it.

[slansing]

Thanks for letting us know what the resolution was!