graph IDP activity with cacti / rrdtools

[Garick Hamlin]

On Mon, Apr 30, 2012 at 12:56:19PM +0200, procaccia wrote:
> Hello,
> 
> I want to produce graph usage stats from my IDPs
> I found 
> https://wiki.shibboleth.net/confluence/display/SHIB2/IdP+Audit+Log+Analysis+Tool
> whitch does a very good job for text formatted stats
> has anyone wrote something to parse from loganalysis.py the values to 
> feed to a rrd archive ?
> any cacti template ?
> If not, have you an idea on how to get only the last 5mn part of the 
> idp-audit.log !?

I do this kind of analysis for munin.  I originally wrote code to
read the file backward then realized: if I used the 'tac' gnu coreutils 
tool, the script is trivial.  

1) Make a timestamp five minutes in the past.  
2) Read the file backwards with tac until the timestamp read is less 
   than your 'five minutes ago timestamp'.
3) Output your counters.

Garick