Nagios Support Forum

[root@nagiosxi tmp]# cat /etc/mrtg/mrtg.cfg|head -n 40
######################################################################
# Multi Router Traffic Grapher -- Example Configuration File
######################################################################
# This file is for use with mrtg-2.0
#
# Note:
#
# * Keywords must start at the begin of a line.
#
# * Lines which follow a keyword line which do start
# with a blank are appended to the keyword line
#
# * Empty Lines are ignored
#
# * Lines starting with a # sign are comments.

# Where should the logfiles, and webpages be created?

# Minimal mrtg.cfg
#--------------------

HtmlDir: /var/www/mrtg
ImageDir: /var/www/mrtg
LogFormat: rrdtool
LogDir: /var/lib/mrtg
ThreshDir: /var/lib/mrtg

#Target[r1]: 2:[email protected]
#MaxBytes[r1]: 1250000
#Title[r1]: Traffic Analysis
#PageTop[r1]: <H1>Stats for our Ethernet</H1>

WorkDir: /var/lib/mrtg


#### ADDED BY NAGIOSXI (USER: nagiosadmin, DATE: 2012-11-29 15:22:53) ####
# Created by
# /usr/bin/cfgmaker --show-op-down --zero-speed=100000000 --snmp-options=:::::2 --noreversedns public@frw-3750-1

ast login: Thu Dec 27 18:59:12 2012 from 172.16.30.5
[root@nagiosxi ~]# env LANG=C /usr/bin/mrtg /etc/mrtg/mrtg.cfg
2012-12-28 00:07:26: ERROR: Target[tec-7200_1678][_IN_] ' $target->[957]{$mode} ' did not eval into defined data
2012-12-28 00:07:26: ERROR: Target[tec-7200_1678][_OUT_] ' $target->[957]{$mode} ' did not eval into defined data
2012-12-28 00:07:26: ERROR: Target[tec-7200_2267][_IN_] ' $target->[1190]{$mode} ' did not eval into defined data
2012-12-28 00:07:26: ERROR: Target[tec-7200_2267][_OUT_] ' $target->[1190]{$mode} ' did not eval into defined data
2012-12-28 00:07:26: ERROR: Target[tec-7200_4984][_IN_] ' $target->[2031]{$mode} ' did not eval into defined data
2012-12-28 00:07:26: ERROR: Target[tec-7200_4984][_OUT_] ' $target->[2031]{$mode} ' did not eval into defined data
2012-12-28 00:07:26: ERROR: Target[tec-7200_5001][_IN_] ' $target->[2042]{$mode} ' did not eval into defined data
2012-12-28 00:07:26: ERROR: Target[tec-7200_5001][_OUT_] ' $target->[2042]{$mode} ' did not eval into defined data
2012-12-28 00:07:26: ERROR: Target[tec-7200_5027][_IN_] ' $target->[2061]{$mode} ' did not eval into defined data
2012-12-28 00:07:26: ERROR: Target[tec-7200_5027][_OUT_] ' $target->[2061]{$mode} ' did not eval into defined data
2012-12-28 00:07:26: ERROR: Target[tec-7200_5038][_IN_] ' $target->[2070]{$mode} ' did not eval into defined data
2012-12-28 00:07:26: ERROR: Target[tec-7200_5038][_OUT_] ' $target->[2070]{$mode} ' did not eval into defined data
2012-12-28 00:07:26: ERROR: Target[tec-7200_5056][_IN_] ' $target->[2083]{$mode} ' did not eval into defined data
2012-12-28 00:07:26: ERROR: Target[tec-7200_5056][_OUT_] ' $target->[2083]{$mode} ' did not eval into defined data
2012-12-28 00:07:26: ERROR: Target[tec-7200-3_366][_IN_] ' $target->[2380]{$mode} ' did not eval into defined data
2012-12-28 00:07:26: ERROR: Target[tec-7200-3_366][_OUT_] ' $target->[2380]{$mode} ' did not eval into defined data
2012-12-28 00:07:26: ERROR: Target[tec-7200-3_1099][_IN_] ' $target->[2746]{$mode} ' did not eval into defined data
2012-12-28 00:07:26: ERROR: Target[tec-7200-3_1099][_OUT_] ' $target->[2746]{$mode} ' did not eval into defined data
2012-12-28 00:07:26: ERROR: Target[tec-7200-3_
........

Usually when you install rrdcached your /etc/mrtg/mrtg.cfg should have a line at the top similar to

Scott
This lIne was there but on the bottom of the file mrtg.cfg .... i moved it to the top.


LibAdd: /opt/rrdtool-1.4.4/lib/perl/5.10.1

We Need this graphs to work, currently it looks something like this .. the gaps duration are increased.

Hi Scott,
The Graph worked after i replaced the MRTG file from a Test instance, my question now is how to find out what in MRTG.cfg file could have caused this problem.

In the above snippet The 1190, 2031, 2042 should be line numbers in your config that were yielding undefined data. What was happening on those lines?

Hi Scott
On line 1190,2031 there was </tr>


<tr>
<td>Max Speed:</td>
<td>12.5 MBytes/s</td>
</tr>

On line 2042 (hight lighted with Red)

</tr>
<tr>
<td>Max Speed:</td>
<td>1250.0 kBytes/s</td>
</tr>
</table>
</div>

Scott,
Is there are way to regenerate mrtg.cfg from XI again. I spend a lot of time investigating this problem. I had no idea the Bandwidth data from process.pl will be 0=IN and 0=Out. Will this happen if we have services prefdata check for 1minute 3 minute and 5 minutes interval.

My question about the lines, thank you for answering the questions, but I'm afraid your prompt and correct response doesn't help because that is simply the HTML it is using the generate the header.

As for your latest questions, do you mean you are worried about losing past performance data if you delete the current MRTG config? The answer is you would not lose performance data, however the non-loss of performance data is contingent upon you naming these items the exact same as you had named them before. Depending on the number of items you are monitoring it would require a fair amount of work. However, if you are up for the task you would need to:

0) Make a backup (Always) [Backup mrtg.cfg and the nagios and nagiosql database.]
1) Delete the mrtg.cfg
2) Clear out /usr/local/nagiosxi/tmp
3) Remove the hosts and services using the Nagios Core Config Manager
4) Re-add them using the Nagios XI Router/Switch Wizard

Hello zaji,

To re-build the mrtg.cfg file run the following:
To re-build item specific .cfg files please see the following:

http://oss.oetiker.ch/mrtg/doc/cfgmaker.en.html

The Problem has been resolved, thanks for your help.