[mrtg] Math and Upgrading

[CHENG, DAVID (PB)]

OK, these are two fairly lame questions, but please bear with me.

1) I have not tried to add targets (other than simple examples) in the past,
so this is my first experience.  I've tried to RTFM, but I must be confusing
myself or something.  Anyway, I have a configuration file that is trying to
add snmpInGetNexts and snmpInGetRequests, then get snmpOutGetResponses (Yes,
I realize that MRTG will cause these counters to change; kinda like
Heisenberg's Uncertainty Principle).  I can retrieve data for each
individual MIB without a problem, but when I try to add them, I get error
messages.  I have tried these target strings and received the following
errors:

Target[SNMP_TEST]: snmpInGetNexts.0:public at 1.1.1.1 +
snmpInGetRequests.0:public at 1.1.1.1&snmpOutGetResponses.0:public at 1.1.1.1

sh-2.05$ mrtg snmp_test.cfg
Use of uninitialized value in string eq at
/usr/local/mrtg-2/bin/../lib/mrtg2/MRTG_lib.pm line 1138. Use of
uninitialized value in string eq at
/usr/local/mrtg-2/bin/../lib/mrtg2/MRTG_lib.pm line 1138. Use of
uninitialized value in string eq at
/usr/local/mrtg-2/bin/../lib/mrtg2/MRTG_lib.pm line 1139. Use of
uninitialized value in string eq at
/usr/local/mrtg-2/bin/../lib/mrtg2/MRTG_lib.pm line 1139. Use of
uninitialized value in concatenation (.) or string at
/usr/local/mrtg-2/bin/../lib/mrtg2/MRTG_lib.pm line 1148. Use of
uninitialized value in concatenation (.) or string at
/usr/local/mrtg-2/bin/../lib/mrtg2/MRTG_lib.pm line 1148. cannot encode
Object ID 10.11.34.1: first subid too big in Object ID 10.11.34.1 at
/usr/local/mrtg/bin/mrtg line 1607
WARNING: skipping because at least the query for 10.11.34.1 on  10.11.34.1
did not succeed Use of uninitialized value in string eq at
/usr/local/mrtg/bin/mrtg line 1545. Use of uninitialized value in string eq
at /usr/local/mrtg/bin/mrtg line 1545. Use of uninitialized value in hash
element at /usr/local/mrtg/bin/mrtg line 1551. Use of uninitialized value in
hash element at /usr/local/mrtg/bin/mrtg line 1551. Use of uninitialized
value in hash element at /usr/local/mrtg/bin/mrtg line 1555. Use of
uninitialized value in hash element at /usr/local/mrtg/bin/mrtg line 1555.
Use of uninitialized value in concatenation (.) or string at
/usr/local/mrtg/bin/mrtg line 1556. Use of uninitialized value in
concatenation (.) or string at /usr/local/mrtg/bin/mrtg line 1556.
WARNING: Could not match host:'EnLA0201 at 10.11.34.1' ref:'' key:''
ERROR: Target[isd_rsm_cpu][_IN_] 'snmpInGetNexts. $$target[1]{$mode}  +
snmpInGetRequests.0:EnLA0201@ $$target[0]{$mode} ' (warn): Array found where
operator expected at (eval 6) line 1, at end of line
ERROR: Target[isd_rsm_cpu][_OUT_] 'snmpInGetNexts. $$target[1]{$mode}  +
snmpInGetRequests.0:EnLA0201@ $$target[0]{$mode} ' (warn): Array found where
operator expected at (eval 7) line 1, at end of line


Or, another target string yields this error:

Target[SNMP_TEST]: snmpInGetNexts.0 +
snmpInGetRequests.0&snmpOutGetResponses.0:public at 1.1.1.1

ERROR: Target[isd_rsm_cpu][_IN_] 'snmpInGetNexts.0 +  $$target[0]{$mode} '
(eval): Bareword "snmpInGetNexts" not allowed while "strict subs" in use at
(eval 6) line 1.

ERROR: Target[isd_rsm_cpu][_OUT_] 'snmpInGetNexts.0 +  $$target[0]{$mode} '
(eval): Bareword "snmpInGetNexts" not allowed while "strict subs" in use at
(eval 7) line 1.


I think I am missing something really stupid, but I'm tired right now, and I
hope you guys will overlook this.  I could add these values in an external
script, but I figured the math would be easier...:)


2) I don't know if this has anything to do with this issue, but I am
currently running MRTG 2.9.22, RRDTOOL 1.0.39, and 14all.cgi 1.1p23.  I know
that there are newer versions of all these programs out there, but this has
been running smoothly for months, so I haven't thought about upgrading.  Any
compelling reasons to upgrade at this time?  Also, I lost my previous
upgrade notes (if I upgrade, this will be my second time upgrading), but I
seem to remember that it was fairly painless to upgrade.  I think all I did
was configure;make;make install (maybe I never made any notes before because
it was that easy?).  Is that still true, or do I need to be careful of
anything overwriting something that I don't want overwritten?

Thanks for indulging me and wading through this post.

Best Regards,

David Cheng

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