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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Yes, you can do this, but it is a bit more complicated. Here’s
a way to achieve it.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>First, write a plugin for NRPE (exit status 0, output one line
of text containing number) that can collect the metrics you’re interested
in. For example, a small script that downloads a file from a specified
location and times the transfer, then returns the transfer time in seconds for
each of the two sites as two separate values in the output text. NOTE:
Your plugin should ALWAYS exit in less than 30 sec.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Install a small testing satellite server at the various
locations you wish to test from. If you have VMWare then a VM would be
perfect. On this server, install the Nagios NRPE agent, and this new
plugin, and configure NRPE to accept commands from your MRTG server.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>On your MRTG server, install mrtg-nrpe (comes with the Routers2
software, in C or Perl). For each remote server, configure a Target that
uses mrtg-nrpe as a data collection plugin to query the remote NRPE and run the
NRPE plugin you designed at the start. This returns a pair of values in
seconds which you can graph. Make good use of the Forks: directive to
ensure that your checks all complete within the 5min window.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>And voila, you have a graph of FTP performance form each site,
with the ‘in’ and ‘out’ lines being the response times
of your two FTP servers! You can use a similar method to
create plugins to monitor other network protocols.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>We have done something similar for remote monitoring of mail
queues.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Feel free to email me directly if you’d like a bit more
help with this.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Steve<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Steve Shipway<o:p></o:p></span></b></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>ITS Unix Services Design Lead<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>University of Auckland<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Floor 2, 58 Symonds Street<o:p></o:p></span></p>
<p class=MsoNormal><i><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>09 3737599 ext 86487<o:p></o:p></span></i></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal style='margin-left:5.25pt'><b><span lang=EN-US
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
mrtg-bounces+s.shipway=auckland.ac.nz@lists.oetiker.ch
[mailto:mrtg-bounces+s.shipway=auckland.ac.nz@lists.oetiker.ch] <b>On Behalf Of
</b>Furosh One<br>
<br>
</span><o:p></o:p></p>
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<p class=MsoNormal><br>
I've used MRTG in the past as a network administrator and I know it's good.
However, I have the need to perform some network testing to collect
stats/metrics on network performance, bandwidth, time, etc from our global WAN
to a central server that I've setup.<br>
<br>
Essentially management would like for me to compare versus our company's public
FTP site and test against a co-located server in a cloud environment. <br>
<br>
We would like to know if all our global WAN locations would benefit with using
this cloud setup to increase speed for data transfers for things such as FTP,
SFTP, SVN, Git, SCP, RSYNC, etc.<br>
<br>
Can I use MRTG to obtain this information for a destination and not a ROUTER?
If so, I'd like to collect network speed metrics and graphs, etc. to compare
versus our current FTP site.<br>
<br>
-Regards,<br>
FuRoSh.<o:p></o:p></p>
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