[mrtg] Re: mrtg, extOutput.1, snmp

PAUL WILLIAMSON pwilliamson at mandtbank.com
Fri Dec 30 21:18:28 MET 2005 

Sounds about right.  Just multiply the output by 300 or multiply 
by 60 and add perminute to the options.  Or, just change the 
description to say "messages per second" unless you want to 
track "messages per 5 minutes."  To me, it sounds better to scale 
it to something like "messages per minute" or something similar.

MRTG does rates of change over time.  You might be able to fiddle 
with the options like making it a gauge or any number of other 
ways to get the number you are looking for.

"Sendmail statistics" is a bit vague.  Do you want to convey 
messages per a specific time interval?  

Paul

>>> "VCI Help Desk" <admin at vci.net> 12/30/05 2:34 PM >>>
    Apparently, I still have something wrong and I can't find it.
Here's
what I have in mrtg.cfg  The values that I get thru SNMP are the
mailstats
that are constantly incrementing and do not reset. When I view the
graph it
says the past 5 minutes there were .5 messages sent. This should be
about
200 messages.

    I believe the problem is MRTG is calculating the difference between
the
values retrieved over the last 5 minutes and dividing that by 300
seconds.
Is there some way I can tell it to not divide by 300? Does this right?

Target[test]: extOutput.1&extOutput.2:xxxsnmp at smtp.xx.xxx 
Title[test]: smtp Sendmail Statistics
PageTop[test]: <h1>smtp Sendmail Statistics</H1>
MaxBytes[test]: 1000
Options[test]: growright, nopercent

Target[test2]: extOutput.1&extOutput.2:xxxsnmp at smtp2.xx.xxx 
Title[test2]: smtp2 Sendmail Statistics
PageTop[test2]: <h1>smtp2 Sendmail Statistics</H1>
MaxBytes[test2]: 1000
Options[test2]: growright, nopercent

      Bill


----- Original Message ----- 
From: Bill
To: mrtg at list.ee.ethz.ch 
Sent: Friday, December 30, 2005 8:47 AM
Subject: [mrtg] Re: mrtg, extOutput.1, snmp


    Yes, that is what I have. I forgot to mention that, sorry.

    Options[_]: growright, nopercent, absolute

      Bill



----- Original Message ----- 
From: Daniel J McDonald
To: Bill
Sent: Friday, December 30, 2005 8:41 AM
Subject: Re: [mrtg] Re: mrtg, extOutput.1, snmp


On Fri, 2005-12-30 at 08:30 -0600, Bill wrote:
>     Thanks for the help. I figured out what it was. When I used a
Perl
> script to telnet to the mail server and get the stats I had the Perl
script
> get the difference in the messages transferred over the past 5
minutes. So
I
> had the MaxBytes set to 1000. With this method the difference is not
> calculated so the MaxBytes was too low.
>
>     I also had the "Option: gauge" set so I had to remove that
option.

You need to use option[target]: absolute

>
>     Also, I tried the debugging specified below but my MRTG says it
doesn't
> know that option. I have the MRTG that came with RedHat 9. it is
version
> 2.9.17-13

That is immensely old.

To turn on debugging, edit the mrtg script and change the $DEBUG
variable - it's relatively close to the top.
>
>       Bill
>
>
> ----- Original Message ----- 
> From: William Owen
> To: 'Bill'
> Sent: Thursday, December 29, 2005 4:17 PM
> Subject: RE: [mrtg] mrtg, extOutput.1, snmp
>
>
> Try running MRTG interactively and tack -debug=base,snpo,log onto the
end
of
> the command.  This will show basic debugging along with SNMP
debugging and
> RRDTool log debugging.  The output from this should allow you to
pinpoint
> where you are having a failure.  If it isn't obvious from there, post
the
> output to the list and you should get some help.
>
> -----Original Message-----
> From: Bill [mailto:admin at vci.net] 
> Sent: Thursday, December 29, 2005 3:38 PM
> To: mrtg at list.ee.ethz.ch 
> Subject: [mrtg] mrtg, extOutput.1, snmp
>
>     I have mrtg monitoring my sendmail stats using a script that
telnet's
to
> my mail servers and gets the stats. Today, I was trying to change the
data
> collection method to use get the email stats using snmpd. I added an
"ext"
> option to snmpd.conf and wrote a script to return the stats. When I
do an
> snmpget from the monitoring server it works perfect. I changed the
source
in
> my mrtg config file and run mrtg. It runs without any errors but my
RRD
> files don't record the data. It's filled with NaN. After I wait about
30
> minutes the entire RRD file is still NaN.
>
>     I've done everything I know to do. I've never had this much
difficulty
> getting something to graph and I can't figure out why this doesn't
work.
> Anyone have any ideas.
>
>     Bill
>
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-- 
Daniel J McDonald
LAN/WAN Integrator
Austin Energy

Desk: 512 322 6739
Cell: 512 694 0654

dan.mcdonald at austinenergy.com 

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