Christian Arnaut | 25 Nov 23:05 2014
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SNMP Disk Space Negative Values

Am attempting to use MRTG to monitor disk space on a Windows Server as I have done on multiple servers and workstations in the past. However, this time the local storage capacity on the local drive partition is nearly 15TB.
 
It appears that I have exceeded an SNMP threshold where the integer values are now negative numbers. For example to monitor total space on the C: drive I used (simplified)... iso.3.6.1.2.1.25.2.3.1.4.2 * iso.3.6.1.2.1.25.2.3.1.6.2
 
iso.3.6.1.2.1.25.2.3.1.3.2 = STRING: "C:\\ Label:"
iso.3.6.1.2.1.25.2.3.1.3.4 = STRING: "E:\\ Label:"
iso.3.6.1.2.1.25.2.3.1.4.2 = INTEGER: 4096
iso.3.6.1.2.1.25.2.3.1.4.4 = INTEGER: 4096
iso.3.6.1.2.1.25.2.3.1.5.2 = INTEGER: 10350335
iso.3.6.1.2.1.25.2.3.1.5.4 = INTEGER: -268468737
iso.3.6.1.2.1.25.2.3.1.6.2 = INTEGER: 6261795
iso.3.6.1.2.1.25.2.3.1.6.4 = INTEGER: -527400222
 
With the E: drive, iso.3.6.1.2.1.25.2.3.1.4.4 correctly shows the cluster size (4096). However, I am sure the total number of clusters isn't '-527400222'. Even if I used the absolute value of 527400222, the numbers don't add up to the 15TB partition size.
 
Any suggestions? Or have I reached the limitation of MRTG for the purpose I am looking for?
 
 
Thank you, in advance, for any assistance!

~Christian
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Christian Arnaut | 19 Nov 17:45 2014
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Same config, differing results...

<!-- .hmmessage P { margin:0px; padding:0px } body.hmmessage { font-size: 12pt; font-family:Calibri } -->
I have a test (virtual) Debian server that I use for testing new applications, configs, etc. before they are deployed to my production Debian server. MRTG is amongst the apps that I use the virtual server for.
 
Currently I am using the identical cfg file to monitor bandwidth on a Windows 7 wireless network adaptor on my laptop. On the test server, the graphed results are exactly what I intended. However, the exact cfg file on the production server produces dramatically different results. On the production environment, the graph is a continually growing saw-tooth graph that almost appears to be showing the uptime of the interface. If, after a few hours, I turn off the wireless interface and turn it back on, the graph drops to zero and the saw-tooth begins again. Conversely, on the test server, the bandwidth logs continue to be logged and displayed exactly as intended.
 
Two servers, both running the same OS (Debian 7.7), both running the same version of MRTG (2.7.14) and both running the same config for the intended interface (below). What am I possibly missing?
 
 
Thanks, in advance, for any suggestions!
~Christian
 
(cfg file below)
 
EnableIPv6: no
Options[_]: gauge
WorkDir: /var/www/mrtg/user

Target[user-eth1]: 12:xxxxpublic <at> 192.168.0.77:
SetEnv[user-eth1]: MRTG_INT_IP="192.168.3.55" MRTG_INT_DESCR="Intel(R)-Centrino(R)-Advanced-N-6205"
MaxBytes[user-eth1]: 16250000
Options[_]: bits
Title[user-eth1]: Traffic Analysis for user -- WiFi Connection
PageTop[user-eth1]: <h1>Traffic Analysis for user -- WiFi Connection</h1>
                <div id="sysdetails">
                        <table>
                                <tr>
                                        <td>System:</td>
                                        <td>user-2519.xxxx.local in </td>
                                </tr>
                                <tr>
                                        <td>Maintainer:</td>
                                        <td>user <at> xxxx.org</td>
                                </tr>
                                <tr>
                                        <td>Description:</td>
                                        <td>Intel(R)-Centrino(R)-Advanced-N-6205  </td>
                                </tr>
#                                <tr>
#                                        <td>ifType:</td>
#                                        <td>Radio Spread Spectrum (802.11) (71)</td>
#                                </tr>
                                <tr>
                                        <td>ifName:</td>
                                        <td>WiFi Connection</td>
                                </tr>
                                <tr>
                                        <td>Max Speed:</td>
                                        <td>104.0 Mbits/s</td>
                                </tr>
                                <tr>
                                        <td>Ip:</td>
                                        <td>192.168.3.55 (user-2519.xxxx.local)</td>
                                </tr>
                        </table>
                </div>
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Dave Heritage | 10 Nov 20:56 2014

Re: HTML not beign generated

Windows.

The interface html pages are not updating.  The base index.html is fine.

All of the graphs are correct if I manually build an interfacename.html (as if it had made it on its own).

I just re-verified the clock on the server is correct (TZ and time date itself).

I have not tried to just run mrtg once (as the .cfg files have daemon:yes in them).

 

The graphs are not the issue as far as I can tell.  It is just that the interface html pages are not created (or updated).  If I open one that used to update properly, it still shows the last update time as weeks ago.  Additionally, I run three mrtg (wperl) processes with different config files that output to different directories.  My two 'newer' cfg files are creating the graphs fine, but it has never created the interface html files at all.

 

Dave

 

From: Courtney, Wrolf [mailto:Wrolf.Courtney <at> mtahq.org]
Sent: Monday, November 10, 2014 9:19 AM
To: Dave Heritage; 'mrtg <at> lists.oetiker.ch'
Subject: RE: [mrtg] HTML not beign generated

 

Is this Linux or Windoze?

 

Exactly what is not updating? The graphs on the index.html for the device, or the graphs when you drill down to the individual interfaces?

 

Do the pages update OK if you do a manual refresh page?

 

Is the clock set right on the server?

 

If you manually run mrtg from the command line on the server, do the graphs update?

 

Wrolf

 

From: mrtg [mailto:mrtg-bounces+wrolf.courtney=nyct.com <at> lists.oetiker.ch] On Behalf Of Dave Heritage
Sent: Monday, November 10, 2014 10:11 AM
To: 'mrtg <at> lists.oetiker.ch'
Subject: Re: [mrtg] HTML not beign generated

 

I have had MRTG set up and running for some time.  All of a sudden (About 4 weeks ago now) the html pages for the graphs stopped being generated.  I have re-run cfgmaker and compared the newly generated file against what I am running with no changes seen.  All of the graphs are created properly.  Indexmaker created the index page without issue.  Any ideas?

 

David Heritage

dave <at> onxinc.com

ONX, Inc.

918.660.2880

888.664.2880

Read my blog at http://www.mymsfight.com

 

 

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Dave Heritage | 10 Nov 16:10 2014

Re: HTML not beign generated

I have had MRTG set up and running for some time.  All of a sudden (About 4 weeks ago now) the html pages for the graphs stopped being generated.  I have re-run cfgmaker and compared the newly generated file against what I am running with no changes seen.  All of the graphs are created properly.  Indexmaker created the index page without issue.  Any ideas?

 

David Heritage

dave <at> onxinc.com

ONX, Inc.

918.660.2880

888.664.2880

Read my blog at http://www.mymsfight.com

 

 

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Fred Weston | 4 Nov 23:19 2014
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Graph under reporting utilization

I am running MRTG 2.16.2, which I realize is quite old.  I haven't had
occassion or need to upgrade it in quite some time.

I use it to monitor several network links and it works very well for
all but one.  I am using it to monitor the interface utilization of a
1 Gb/s ethernet port on a Cisco 3850 switch and while MRTG does get
data and creates a graph, I don't believe the data it is presenting is
accurate.

Here is the config snippet from my mrtg.cfg:

Target[colo-metro-ethernet-utilization]: 50:public <at> 192.168.198.1:
SetEnv[colo-metro-ethernet-utilization]: MRTG_INT_IP=""
MRTG_INT_DESCR="GigabitEthernet1/0/48"
MaxBytes[colo-metro-ethernet-utilization]: 125000000
Title[colo-metro-ethernet-utilization]: Traffic Analysis for 50 -- COLO-STACK

Here is an example of the daily graph that is generated by MRTG:
https://lpga.box.com/shared/static/vefa3l9dxhmdgifgpw6f.png

The problem is that these numbers do not seem correct to me (they seem
to be significantly under reporting utilization).

That seems to be confirmed by what the switch itself says:

5 minute input rate 46968000 bits/sec, 14177 packets/sec
5 minute output rate 306860000 bits/sec, 28679 packets/sec

This was taken from the switch around the same time the graph above
was generated.  The switch seems to indicate the 5 min utilization
rate is about 58.5 MB/s while MRTG is only showing about 18.2 MB/s.

I'm not sure why there's a discrepancy.  Am I doing something wrong or
missing something simple?

Thanks,
FW
Werner | 28 Oct 12:01 2014
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How can I maximize the Y values​​?

The curve creeps just above the x-axis.
How can I maximize the Y values​​?
--

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Pappelweg 9
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FAX:  07422/52798
Email: wguenzl <at> guenzl.net

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Waqas Asghar | 15 Oct 12:24 2014
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Plot only in traffic

Hi

I want to only plot in traffic of a cisco router interface any idea how that can be achieved ?


Regards,
Waqas Asghar
+923335495619
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Christian | 3 Oct 15:00 2014
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sysName persistence across reboot?

Hi,

I apologize in advance if my question is not relevant to this mailing list. It's not about mrtg functionality but general SNMP protocol.

 

I just want to know if there is a standard or specification that dictates SNMP objects persistence after a reboot. Specifically the sysName, sysLocation and sysContact. I've come across some devices that reset these to their default factory value after each reboot.

 

Is this a common behavior? How many devices like that have you seen? What's your experience with sysName, etc.?

 

Thank you

Christian

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Yunus Adejumo | 2 Oct 16:14 2014
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How can I capture wlan0 interface of EAP150

Dear All,

Please, how do I specify and receive capture logs from EAP150. It is easier getting data from the eth0 interface but the wireless does not return any value.

Thank you.
 
Yunus Adejumo
Information Technology and Communications Unit (INTECU)
Obafemi Awolowo University, Ile-Ife
Tel:08054149570, 07051091415
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Courtney, Wrolf | 1 Oct 16:27 2014

Interface Descriptions for Avaya/Nortel 5510 in cfgmaker

Does anyone know how to get interface names for Avaya/Nortel 5510s in descriptions for cfgmaker? I have no problem with 8600s, just the 5510s. I have tried all parameters in the man page for --ifdesc.

 

Thanks,

 

Wrolf Courtney

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Massimo Cucchi (Europe | 29 Sep 09:35 2014

Re: data whel poll is not available

Hi Guys,

 

A quick question,

 

When I poll a Memory into a cisco router  I receive a correct value , but if there are issues on polling the graph show me always the last value obtained (Iand I can’t understand if there are some problem) , how can I show on the graph a “zero” value based on an error of polling device ?

 

Thank you

 

Massimo



Massimo Cucchi
Architect
Dimension Data Italia SpA
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