MRTG

hebblethwaite · 08-06-2010, 06:34 AM

Greetings friends,

I've had MRTG installed for a while but am only getting around to figuring out how it works. Need a little help finishing the job. Facts:
-router is at 192.168.1.1
-MRTG seems to be successfully installed on my Fedora Core 4 (I know, old school!) machine. [server]/r1.html does bring up the right page.
-mrtg.cfg looks like this (I started with a sample):

HtmlDir: /var/www/html/mrtg
ImageDir: /var/www/html/mrtg
LogDir: /var/lib/mrtg
ThreshDir: /var/lib/mrtg
RunAsDaemon: Yes
#Target[r1]: 2

ublic@myrouter.somplace.edu
Target[r1]: 2

ublic@192.168.1.1
MaxBytes[r1]: 1250000
Title[r1]: Traffic Analysis
PageTop[r1]: <H1>Edge Stats for HebbleNet Router</H1>

Problem is I can't figure out:
1. How to make it "update" automatically. It's stuck on November 11, 2009
2. Not sure how to make sure it's monitoring the WAN port or the LAN port on the router, which is a SonicWall TZ150.

Thanks in advance!
Kevin

engtmk · 08-09-2010, 04:56 PM

Quote:

1. How to make it "update" automatically. It's stuck on November 11, 2009

you have to check if there was a crontab on the machine to update the logfile (which contain the values polled from your snmp agent)

check this article here it should help you
http://oss.oetiker.ch/mrtg/doc/mrtg-unix-guide.en.html

Quote:

2. Not sure how to make sure it's monitoring the WAN port or the LAN port on the router, which is a SonicWall TZ150.

you can monitor any snmp-enabled devices.

engtmk
http://engtmk-techtip.blogspot.com

centosboy · 08-11-2010, 07:35 AM

Quote:

Originally Posted by hebblethwaite

Greetings friends,

I've had MRTG installed for a while but am only getting around to figuring out how it works. Need a little help finishing the job. Facts:
-router is at 192.168.1.1
-MRTG seems to be successfully installed on my Fedora Core 4 (I know, old school!) machine. [server]/r1.html does bring up the right page.
-mrtg.cfg looks like this (I started with a sample):

HtmlDir: /var/www/html/mrtg
ImageDir: /var/www/html/mrtg
LogDir: /var/lib/mrtg
ThreshDir: /var/lib/mrtg
RunAsDaemon: Yes
#Target[r1]: 2

ublic@myrouter.somplace.edu
Target[r1]: 2

ublic@192.168.1.1
MaxBytes[r1]: 1250000
Title[r1]: Traffic Analysis
PageTop[r1]: <H1>Edge Stats for HebbleNet Router</H1>

Problem is I can't figure out:
1. How to make it "update" automatically. It's stuck on November 11, 2009
2. Not sure how to make sure it's monitoring the WAN port or the LAN port on the router, which is a SonicWall TZ150.

Thanks in advance!
Kevin

You should have a cron entry somewhere like

Code:

/etc/cron.d/mrtg

with contents such as:

Code:

*/5 * * * * root LANG=C LC_ALL=C /usr/bin/mrtg /etc/mrtg/mrtg.cfg --lock-file /var/lock/mrtg/mrtg_l --confcache-file /var/lib/mrtg/mrtg.ok

exact paths depends on your installation type.
regarding lan port or wan port..either must be snmp enabled and then you monitor using that ports ip.

from an rpm install you can find out where the config files are

Code:

[root@cxxx]# rpm -qc mrtg
/etc/cron.d/mrtg
/etc/httpd/conf.d/mrtg.conf

an example i have

Code:

HtmlDir: /var/www/mrtg
ImageDir: /var/www/mrtg
LogDir: /var/lib/mrtg
ThreshDir: /var/lib/mrtg
Target[xxxx]: 2:starf1sh@localhost
MaxBytes[xxxx]: 1250000
Title[xxxx]: Traffic Analysis
Options[xxxx]: growright,bits
PageTop[xxxx]: <H1>Stats for xxxxxxx localhost</H1>