[mrtg] MRTG not honouring mib file

[Mike Mitchell]

I looked at the IMPORTS line in the squid 3.1.8 MIB file and there is nothing there of concern.  It is acting more like the MIB file couldn't be read at all.  Check the permissions on the file and its directory path.  Judging from your example, you're running 'snmpget' as root.  Try running 'snmpget' under the same ID as you're running mrtg.

Here's a small perl script that can be used to test the MIB parser:

  #!/usr/bin/perl
  # change the following line to point to your MRTG library directory
  use lib qw(/usr/local/etc/mrtg/lib/mrtg2)
  use SNMP_util;

  $SNMP_util::Debug = 1;
  foreach $arg (@ARGV) {
      $cnt = SNMP_util::snmpMIB_to_OID($arg);
      print "Loaded $cnt OIDs\n";
  }

I ran the script with the path to the squid 3.1.8 MIB file as its only argument.
It returned a list of textual strings to OID numbers and the line "Loaded 114 OIDs".

Mike Mitchell

________________________________
From: mrtg-bounces+mike.mitchell=sas.com at lists.oetiker.ch [mrtg-bounces+mike.mitchell=sas.com at lists.oetiker.ch] on behalf of Babu C [babscontact at rediffmail.com]
Sent: Wednesday, October 06, 2010 6:00 AM
To: mrtg at lists.oetiker.ch
Subject: [mrtg] MRTG not honouring mib file

Hi List,
As I suspect my issue is something to do with mrtg I am posting it
here, I have upgraded the squid box to 3.1.8 and everything is working
fine except the graph part with mrtg.

Details of system as follows
OS FreeBSD : 8.1
Squid : 3.1.8
MRTG : mrtg-2.16.4

My mrtg.cfg is as below

LoadMIBs: /usr/local/etc/mrtg/squid.mib
EnableIPv6: no
WorkDir: /usr/local/www/apache22/data
Options[_]: bits,growright

Target[proxy-hit]:
cacheHttpHits&cacheServerRequests:public at 127.0.0.1:3401
MaxBytes[proxy-hit]: 100000
Title[proxy-hit]: HTTP Hits
Suppress[proxy-hit]: y
LegendI[proxy-hit]: HTTP hits
LegendO[proxy-hit]: HTTP requests
Legend1[proxy-hit]: HTTP hits
Legend2[proxy-hit]: HTTP requests
YLegend[proxy-hit]: perminute
ShortLegend[proxy-hit]: req/min
Options[proxy-hit]: nopercent, perminute, dorelpercent, unknaszero,
growright, pngdate
#PNGTitle[proxy-hit]: Proxy Hits

Target[proxy-srvkbinout]:
cacheServerInKb&cacheServerOutKb:public at 127.0.0.1:3401
MaxBytes[proxy-srvkbinout]: 76800
Title[proxy-srvkbinout]: Cache Server Traffic In/Out
Suppress[proxy-srvkbinout]: y
LegendI[proxy-srvkbinout]: Traffic In
LegendO[proxy-srvkbinout]: Traffic Out
Legend1[proxy-srvkbinout]: Traffic In
Legend2[proxy-srvkbinout]: Traffic Out
YLegend[proxy-srvkbinout]: per minute
ShortLegend[proxy-srvkbinout]: b/min
kMG[proxy-srvkbinout]: k,M,G,T
kilo[proxy-srvkbinout]: 1024
Options[proxy-srvkbinout]: nopercent, perminute, unknaszero,
growright, pngdate

I have verified that squid snmp is working through the following
command

#snmpget -On -m /usr/local/etc/mrtg/squid.mib -v 2c -c public
127.0.0.1:3401 cacheHttpHits cacheServerRequests cacheServerInKb
cacheServerOutKb cacheUptime CacheSoftware cacheVersionId

This gives me results without any errors so snmp part of squid is
working fine I think
Now when I run mrtg I could see the following errors in mrtg.log file

010-10-04 12:37:33 -- Started mrtg with config
'/usr/local/etc/mrtg/mrtg.cfg'
2010-10-04 12:37:33 -- Unknown SNMP var cacheHttpHits
at /usr/local/bin/mrtg line 2242
2010-10-04 12:37:33 -- Unknown SNMP var cacheServerRequests
at /usr/local/bin/mrtg line 2242
2010-10-04 12:37:33 -- Unknown SNMP var cacheUptime
at /usr/local/bin/mrtg line 2242
2010-10-04 12:37:33 -- Unknown SNMP var cacheSoftware
at /usr/local/bin/mrtg line 2242
2010-10-04 12:37:33 -- Unknown SNMP var cacheVersionId
at /usr/local/bin/mrtg line 2242
2010-10-04 12:37:33 -- Use of uninitialized value $ret[-2] in
concatenation (.) or string at /usr/local/bin/mrtg line 2261.
2010-10-04 12:37:33 -- Use of uninitialized value $ret[-1] in
concatenation (.) or string at /usr/local/bin/mrtg line 2261.
2010-10-04 12:37:33 -- Unknown SNMP var cacheServerInKb
at /usr/local/bin/mrtg line 2242
2010-10-04 12:37:33 -- Unknown SNMP var cacheServerOutKb
at /usr/local/bin/mrtg line 2242
2010-10-04 12:37:33 -- Unknown SNMP var cacheUptime
at /usr/local/bin/mrtg line 2242
2010-10-04 12:37:33 -- Unknown SNMP var cacheSoftware
at /usr/local/bin/mrtg line 2242
2010-10-04 12:37:33 -- Unknown SNMP var cacheVersionId
at /usr/local/bin/mrtg line 2242
2010-10-04 12:37:33 -- Use of uninitialized value $ret[-2] in
concatenation (.) or string at /usr/local/bin/mrtg line 2261.
2010-10-04 12:37:33 -- Use of uninitialized value $ret[-1] in
concatenation (.) or string at /usr/local/bin/mrtg line 2261.
2010-10-04 12:37:33 -- 2010-10-04 12:37:33: ERROR:
Target[proxy-hit][_IN_] ' $target->[0]{$mode} ' did not eval into
defined data
2010-10-04 12:37:33 -- 2010-10-04 12:37:33: ERROR:
Target[proxy-hit][_OUT_] ' $target->[0]{$mode} ' did not eval into
defined data
2010-10-04 12:37:33 -- 2010-10-04 12:37:33: ERROR:
Target[proxy-srvkbinout][_IN_] ' $target->[1]{$mode} ' did not eval
into defined data
2010-10-04 12:37:33 -- 2010-10-04 12:37:33: ERROR:
Target[proxy-srvkbinout][_OUT_] ' $target->[1]{$mode} ' did not eval
into defined data

All I could make out from these error was mrtg not reading squid.mib
file. Am I right?
Now I am stuck and I suspect a broken mrtg? or did I go wrong
somewhere? Do kindly let me know what went wrong and how to proceed
further.
Thanx in advance
Babs
[X]<http://sigads.rediff.com/RealMedia/ads/click_nx.ads/www.rediffmail.com/signatureline.htm@Middle?>
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