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Old 08-10-2004, 12:07 PM   #1
Registered: Sep 2003
Location: Bulgaria
Distribution: Ubuntu 9.10, FreeBSD 7.2
Posts: 459

Rep: Reputation: 31
MRTG getting output from scripts

There is written in the documentation that MRTG can write graphics based on output from external scripts instead of SNMP. 4 lines are needed as output:
Line 1
    current state of the first variable, normally 'incoming bytes count' 

Line 2
    current state of the second variable, normally 'outgoing bytes count' 

Line 3
    string (in any human readable format), telling the uptime of the target. 

Line 4
    string, telling the name of the target.
So I made the following script (/root/mrtg-test) and chmoded it +x:
echo 3027162
echo 0
echo 193.bla.bla.bla
It returns 4 lines of output, but nothing is drawn on the graphs after running mrtg on that config:
WorkDir: /var/www/htdocs/mrtg-test
options[_]: growright

Title[test]: Am testovo nekvo takova
Target[test]: `/root/mrtg-test`
MaxBytes[test]: 1250000000
PageTop[test]: <H2>Bla?</H2>
Max In: 0.0 B/s (0.0%) Average In: 0.0 B/s (0.0%) Current In: 0.0 B/s (0.0%)
Max Out: 0.0 B/s (0.0%) Average Out: 0.0 B/s (0.0%) Current Out: 0.0 B/s (0.0%)
IMHO, there should be 3027162 current value, but it is 0. Does anyone have an idea?
Old 08-12-2004, 05:23 AM   #2
Registered: Sep 2003
Location: Bulgaria
Distribution: Ubuntu 9.10, FreeBSD 7.2
Posts: 459

Original Poster
Rep: Reputation: 31
I made up my way, via using gauge option
Wow, how many things can be monitored via MRTG... I feel like a little child in a toy-shop


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