<html><head><style type='text/css'>p { margin: 0; }</style></head><body><div style='font-family: Arial; font-size: 12pt; color: #000000'>I have accomplished this by using Mr. Shipway's cfgmaker template 'generic-host.htp'. That has given me the OIDs of basically everything I need for vital system resources...even for my network printer! I would highly recommend that method for anyone that doesn't know much about OIDs/SNMP/MIBs or anyone that is getting errors with SNMP strings and would like to go straight to the OIDs.<br><br>----- Original Message -----<br>From: "Steve Shipway" <s.shipway@auckland.ac.nz><br>To: "mrtg" <mrtg@lists.oetiker.ch><br>Sent: Sunday, September 27, 2009 4:36:09 PM GMT -06:00 US/Canada Central<br>Subject: [mrtg] FW: Monitoring Load<br><br>
<!--[if !mso]>
<style>
v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}
</style>
<![endif]-->
<!--[if !mso]>
<style>
st1\:*{behavior:url(#default#ieooui) }
</style>
<![endif]-->
<style>
<!--
/* Font Definitions */
@font-face
{font-family:Wingdings;
panose-1:5 0 0 0 0 0 0 0 0 0;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman";}
a:link, span.MsoHyperlink
{color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{color:blue;
text-decoration:underline;}
p
{margin:0cm;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman";}
span.EmailStyle18
{mso-style-type:personal;
font-family:Arial;
color:navy;}
span.EmailStyle19
{mso-style-type:personal-reply;
font-family:Arial;
color:navy;}
@page Section1
{size:595.3pt 841.9pt;
margin:72.0pt 90.0pt 72.0pt 90.0pt;}
div.Section1
{page:Section1;}
-->
</style>
<div class="Section1">
<p class="MsoNormal"><font face="Times New Roman" size="3"><span style="font-size: 12pt;"> </span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;">Three ways to do the same thing, with 3
solutions! (1) is if the problem is the string conversion, (2) is for if
the problem is the MIB symbolic name, and (3) is if the problem is it not being
an integer. To be honest though I think (2) or possible (2)+(3) is the
way to go, but I had to include (1) as it is so pretty </span></font><font color="navy" face="Wingdings" size="2"><span style="font-size: 10pt; font-family: Wingdings; color: navy;">J</span></font><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;"></span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;"> </span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;">1. Your device is outputting the laLoad
variable as a string rather than as an integer. You may need to set up a
Conversion Code definition with the fromstring() function to convert it to a
real number.</span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;"> </span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;">In the cfg file, put a line:</span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;"> </span></font></p>
<p class="MsoNormal"><font color="black" face="Courier New" size="3"><span style="font-size: 12pt; font-family: "Courier New"; color: black;">ConversionCode:
/usr/local/mrtg/etc/conversoincode.pl</span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;"> </span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;">(you might need to put a different path
for your script, of course). Then, in the conversioncode.pl file, put the
text:</span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;"> </span></font></p>
<p class="MsoNormal"><font color="black" face="Courier New" size="3"><span style="font-size: 12pt; font-family: "Courier New"; color: black;">sub fromstring()
{my $v = shift; if($v =~ /(\d+\.?\d*)/) { return $1; } else { return 0; } }</span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;"> </span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;">Finally, your Target definition should add
‘|fromstring’</span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;"> </span></font></p>
<p class="MsoNormal"><font color="black" face="Courier New" size="3"><span style="font-size: 12pt; font-family: "Courier New"; color: black;">Target[server.wherever_load]:
laLoad.3&laLoad.3:public@server.wherever|fromstring</span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;"> </span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;">Having said all of this, though, I would
have expected Perl to Do The Right Thing when confronted with a string
containing just a number. I don’t see why this bit should be
necessary.</span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;"> </span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;">2. Another possibility is that MRTG simply
doesn’t know about the symbolic laLoad name whereas snmpwalk does.
In this case you’ll need ot tell MRTG about the MIB.</span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;"> </span></font></p>
<p class="MsoNormal"><font color="black" face="Courier New" size="3"><span style="font-size: 12pt; font-family: "Courier New"; color: black;">LoadMIBs:
/usr/share/snmp/mibs/UCD-SNMP-MIB.txt</span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;"> </span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;">3. A third possibility is to try using
laLoadInt instead. This is definitely a number, but multipled by
100. You need to divide it in the Target definition:</span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;"> </span></font></p>
<p class="MsoNormal"><font color="black" face="Courier New" size="3"><span style="font-size: 12pt; font-family: "Courier New"; color: black;">Target[server.wherever_load]:
laLoadInt.3&laLoadInt.3:public@server.wherever / 100</span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;"> </span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;">Note that the spaces are significant in
this definition. </span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;"> </span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;"> </span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;">Steve</span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;"> </span></font></p>
<div style="border-style: none none none solid; border-color: -moz-use-text-color -moz-use-text-color -moz-use-text-color blue; border-width: medium medium medium 1.5pt; padding: 0cm 0cm 0cm 4pt;">
<div>
<div class="MsoNormal" style="text-align: center;" align="center"><font face="Times New Roman" size="3"><span style="font-size: 12pt;" lang="EN-US">
<hr align="center" size="2" width="100%">
</span></font></div>
<p class="MsoNormal"><b><font face="Tahoma" size="2"><span style="font-size: 10pt; font-family: Tahoma; font-weight: bold;" lang="EN-US">From:</span></font></b><font face="Tahoma" size="2"><span style="font-size: 10pt; font-family: Tahoma;" lang="EN-US">
mrtg-bounces@lists.oetiker.ch
[mailto:mrtg-bounces@lists.oetiker.ch]
<b><span style="font-weight: bold;">On Behalf Of </span></b>Matt Baer<br>
<b><span style="font-weight: bold;">Sent:</span></b> Monday, 28 September 2009
6:21 a.m.<br>
<b><span style="font-weight: bold;">To:</span></b> mrtg<br>
<b><span style="font-weight: bold;">Subject:</span></b> Re: [mrtg] Monitoring Load</span></font><span lang="EN-US"></span></p>
</div>
<p class="MsoNormal"><font face="Times New Roman" size="3"><span style="font-size: 12pt;"> </span></font></p>
<div>
<p class="MsoNormal"><font color="black" face="Arial" size="3"><span style="font-size: 12pt; font-family: Arial; color: black;">Direct copy and paste output of that
command:<br>
<br>
UCD-SNMP-MIB::laIndex.1 = INTEGER: 1<br>
UCD-SNMP-MIB::laIndex.2 = INTEGER: 2<br>
UCD-SNMP-MIB::laIndex.3 = INTEGER: 3<br>
UCD-SNMP-MIB::laNames.1 = STRING: Load-1<br>
UCD-SNMP-MIB::laNames.2 = STRING: Load-5<br>
UCD-SNMP-MIB::laNames.3 = STRING: Load-15<br>
UCD-SNMP-MIB::laLoad.1 = STRING: 0.57<br>
UCD-SNMP-MIB::laLoad.2 = STRING: 0.42<br>
UCD-SNMP-MIB::laLoad.3 = STRING: 0.36<br>
UCD-SNMP-MIB::laConfig.1 = STRING: 12.00<br>
UCD-SNMP-MIB::laConfig.2 = STRING: 12.00<br>
UCD-SNMP-MIB::laConfig.3 = STRING: 12.00<br>
UCD-SNMP-MIB::laLoadInt.1 = INTEGER: 56<br>
UCD-SNMP-MIB::laLoadInt.2 = INTEGER: 41<br>
UCD-SNMP-MIB::laLoadInt.3 = INTEGER: 35<br>
UCD-SNMP-MIB::laLoadFloat.1 = Opaque: Float: 0.570000<br>
UCD-SNMP-MIB::laLoadFloat.2 = Opaque: Float: 0.420000<br>
UCD-SNMP-MIB::laLoadFloat.3 = Opaque: Float: 0.360000<br>
UCD-SNMP-MIB::laErrorFlag.1 = INTEGER: noError(0)<br>
UCD-SNMP-MIB::laErrorFlag.2 = INTEGER: noError(0)<br>
UCD-SNMP-MIB::laErrorFlag.3 = INTEGER: noError(0)<br>
UCD-SNMP-MIB::laErrMessage.1 = STRING: <br>
UCD-SNMP-MIB::laErrMessage.2 = STRING: <br>
UCD-SNMP-MIB::laErrMessage.3 = STRING:<br>
<br>
<br>
</span></font></p>
</div>
</div>
</div>
<br>_______________________________________________
mrtg mailing list
mrtg@lists.oetiker.ch
https://lists.oetiker.ch/cgi-bin/listinfo/mrtg
</div></body></html>