mrtg scripts [solved]

[jonfr]

Where can I find mrtg scripts ? But I want to do more then just basic things like check on lan traffic and so on.
I am a poor at writing scripts.

I am also intrested in knowing if somebody knows how to get traffic statics from speedtouch 585 router.

Thanks in advance.

[di1bert]

There's a bunch of scripts and stuff
on the MRTG home page...

When in doubt, Google it


-m

[jonfr]

I did check that site. But many links are dead. I am also looking into scripts that can help me count the earthquakes on few web pages, EMSC and USGS for instance. But I also want to count the earthquakes on the Icelandic Physics Department web page.

But I don't have the know how to write an script.

[oliver]

you'll need to do something like this (in pseudo code)

COUNT=`curl http://www.whatever.com | grep "number of earthquakes" | awk -F' ' '{print $2}'`
echo ${COUNT}
echo ${COUNT}
echo "uptime"
echo "name"

This is because MRTG requires four lines of output when evaluating data... the first is the "in" bytes, the second is the "out" bytes, third is uptime (in human readable form) and the last is the hostname. Since the last two aren't really relevent they don't have to be accurate or even valid

Then create a earthquate.cfg file and point the target line to your script (in backticks)

Target=`/path/to/your/script`

Also, make sure you include "noinfo" and "gauge" in the options. Noinfo will ignore the last two lines of your script and gauge treats each reading like a new count and not a deviation from the last.

If you search the forum for "power under control" you'll find a nice mrtg guide

[jonfr]

Thanks. Is this shell script (bash) or something else ?

[oliver]

yes, bash is fine... all you need is something that can grab the basic data that you want to graph and output it in a way that mrtg can understand.

[jonfr]

I finally had time to looka at this. But it isn't working.

Here are the scripts that I am using.

[oliver]

the problem is that your script is not returning a numeric result... it looks like your script will just be grabbing the actual line in the html page that says "Ml" and not the actual reading.

[jonfr]

The number below Ml is the earthquake, but it means the size of it (local scale). But the lines there are the earthquakes that I am trying to count. I am trying to count the numbers pr day, so I can see how it changes from time to time.

[oliver]

I love MRTG but I don't think it's the right tool to do this. I don't think you'll ever be able to ensure it's accuracy regarding the time. What I mean is that MRTG will run at 5 or 15 minute intervals (or whatever you set it to in cron) and it's dependant on the web page updating in real time. If the web page is not in real time, MRTG has no way to determine this. (At least I don't know of a way to integrate the timestamps into a reading as MRTG maintains it's own timestamps in the .../<definition>.log file).

For example, if there happened to be earthquakes at 5am/10am/3pm/8pm during the day and they were all posted at 10pm on the site, MRTG would see this as 4 quakes at 10pm as you cannot manipulate the X axis (the time span)

I think something like ploticus would be more suitable... if you changed your script to something like

[jonfr]

Thanks for the help. It is much appreciated. I think that the best way in regarding to size is to count it in a special plot on it's own, as not all web pages that display earthquake data use the same size value.

The IMO web page is updated every 5 min or so, near real time.

When testing the script I found that I get this error in cron when I try run it with mrtg.

[oliver]

mrtg will always error out unless it receives data like this when you run the script by hand:

./myscript
33
4343
3 days 4 hours 5 minutes 6 seconds
myhostname

(but obviously with real data)

If you really just need a count, something like this should work

[jonfr]

I do get statics with this script, thanks.
But the problem is that I get double statics, for one earthquake I get like 7 counts.