Hi all,

I've been struggling with the regex and/or dstype of the tail plugin. I'm basically wanting to count lines in an audit file that logs authentications. Any line should match. Here's what I've got:

LoadPlugin "tail"
<Plugin "tail">
  <File "/var/log/shibboleth-idp/idp-audit.log">
    Instance "idp_audit_log"
    <Match>
      Regex ".*"
      DSType "CounterInc"
      Type "derive"
      Instance "urn_ufl_edu"
    </Match>
  </File>
</Plugin>

I know that the log has more lines in it, since I can run this command and see the line count jump dramatically even in just a few seconds:

$ cat /var/log/shibboleth-idp/idp-audit.log  | wc -l

Unfortunately, when I dump the rrd, I get AVERAGE values like:

<!-- 2011-03-14 11:15:00 EDT / 1300115700 --> <row><v> 1.9156000000e+00 </v></row> <!-- 2011-03-14 11:20:00 EDT / 1300116000 --> <row><v> 1.9638666667e+00 </v></row> <!-- 2011-03-14 11:25:00 EDT / 1300116300 --> <row><v> 2.1036444444e+00 </v></row> <!-- 2011-03-14 11:30:00 EDT / 1300116600 --> <row><v> 1.9892000000e+00 </v></row> <!-- 2011-03-14 11:35:00 EDT / 1300116900 --> <row><v> 1.9534666667e+00 </v></row>

I *know* I'm seeing more than 1-2 lines in a 5 minute interval. Is it possible the numbers are too large that I'm substracting, yielding an overflow? A single hour can sometimes have 10k lines in the log file.

Thanks in advance for your consideration!
--
Martin B. Smith
[email protected] - (352) 273-1374
CNS/Open Systems Group
University of Florida

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