[mrtg] Using MRTG for graphing sum of OIDS.

G. Colangelo binarym at psycho-hazard.net
Mon Feb 14 16:26:22 MET 2005


I want my mrtg to graph UCD-SNMP-MIB::memAvailReal +
UCD-SNMP-MIB::memBuffer + UCD-SNMP-MIB::memCac hed", so i tried the
following syntax: 

Target[mem]: +
+ at host (no linefeed,
space between each '+')

But mrtg reply me this:

[root at rei]:/etc# mrtg                                                   
16:07 ERROR: Target[mem][_IN_] ' + +  $target->[3]{$mode} ' (warn): Argument
"\x{1}\x{3}..." isn't numeric in addition (+) at (eval 12) line 1.
ERROR: Target[mem][_OUT_] ' + +  $target->[3]{$mode} ' (warn): Argument
"\x{1}\x{3}..." isn't numeric in addition (+) at (eval 13) line 1.

I tried a lot of differents syntax, but none works. 
I don't understand the syntax used in the manpage:

oid1&oid2:comm at host / oid3&oid4:comm at host * x

Why is there 3 '&'. I was believing that '&' was used as delimiter
between in and out sources.
Can anybody explain me the syntax to do it ?


Gérald Colangelo
binarym at psycho-hazard.net - http://psycho-hazard.net/~binarym/

Being a sysadmin means hours of hard labor every day.
Being an abusive sysadmin means hours of fun.

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