On 8 jul 2006, at 09.18, J. Buck Caldwell wrote:
Forgive the cross-posting, but I think I need a wider audience.
Is it possible to track pf ALTQ usage with MRTG? I notice that
FreeBSD's built-in bsnmpd has a module and mibs to support pf, but
I know too little about SNMP to figure out how to access the queue
stats.
Specifically, I'm looking to make a series of MRTG graphs that show
the total bytes that pass through each queue. I figure if worst
comes to worst, I can work out a separate program that parses the
output of 'pfctl -vsq' and returns that as MRTG-readable input, but
it would be much smoother to get it via SNMP, if it can be done.
I got one of those, a small python script which feeds the data into a
rrd file:
https://svn.stromnet.org/repos/misc/trunk/rrd/pfque-rrd.py
Works fine, the only problem I have is when i reload my rules (that
is, reset the counters).. The graph goes mad ;)
Altough, if there is some way to do this via SNMP instead, I would
also like to know...
The above scripts uses tftp to move the rrdfiles to my graphing host.
I call it from crontab every minute.
For the graphing I use this:
https://svn.stromnet.org/repos/misc/trunk/rrd/pfque-graph.py
And the result looks like this:
http://stats.stromnet.org/router/details.php?file=pfqueue_out
If you look at the last month/year graphs, you see the problem with
resetting the counters..
Any help would be appreciated. I'm sure others would be interested
in this as well.
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