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From: Brent Bice (no email)
Date: Sat May 03 2008 - 23:58:29 EDT
Thanks, Rocco for pointing out I'd forgotten to CC the list in my
reply... (sheepish grin) Here it is for what it's worth...
Rocco Scappatura wrote:
> Hello,
>
> I would like to know if is there exists any Postfix-specific MIB.
'Don't think so, but here's what we're doing. In
/etc/snmp/snmpd.conf, I added:
# Added for monitoring postfix stats
pass .1.3.6.1.4.1.2021.255 /usr/local/bin/fetch_mail_statistics.pl
/data/log/maillog /data/log/mailstats.db .1.3.6.1.4.1.2021.255
pass .1.3.6.1.4.1.2021.254 /usr/local/bin/countqueue.pl
.1.3.6.1.4.1.2021.254
pass .1.3.6.1.4.1.2021.253 /usr/local/bin/queueage.pl .1.3.6.1.4.1.2021.253
The first perl script was written by someone else quite a while ago.
I vaguely recall having to massage it a little to make it work with the
latest version/s of postfix but don't recall now what I changed. The
other two scripts were quickie hacks I did based on the first one.
Anyway, once you drop those pass lines into snmpd.conf and then HUP
the snmp daemon you can have mrtg or cacti or whatever query for things
under the specified MIB OIDs (basically, any query that starts with the
OID specified in the pass statement is handed to the script to parse and
figure out how to respond to).
For instance, I've got a data template in cacti that defines
"postfix_deferred" to be an snmp query for .1.3.6.1.4.1.2021.255.2
I'll attach the three perl scripts (zip'd) here. I make no claim to
their beauty or elegance - I'm not a real perl hacker, I just use it
when I don't have time to write something in C (or when other admins
here might need to maintain it). :-)
Brent
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