[collectd] Plugins for postfix, amavisd-new and powerdns
octo at verplant.org
Mon Mar 31 21:05:38 CEST 2008
the problem is that I need to specify a ``type'' for each value, because
values either be a counter (e. g. number of questions since start) or a
gauge value (e. g. number of entries in a cache). I don't want to simply
add a ``type'' for each value the daemon can provide, because similar
graphs already exist and by re-using those types the graphing
infrastructure can be re-used, too, and things like `noerror-answers'
and `nxdomain-answers' should be transformed into collectd's naming
scheme, so that multiple files can end up in one graph. That's why I
used `dns_rcode-NXDOMAIN' for the latter, for example.
Supporting _all_ counters the recursor can offer and let the user set
another command if he doesn't like it is a good point, I didn't think of
that for whatever reason.
That the authorative server can't provide several values at once is a
bummer. Wouldn't be querying all wanted values in a loop be a good
idea then? That way the user could provide a list of all the values he
wants - with a fairly complete default setting..
Thanks for the PDF, hopefully it has some more details than the online
 To be honest, this wan't the first thing that annoyed me. The first
thing was that the server doesn't start without a backend and
complains about that to file descriptor 2, aka. STDERR - _after_
closing it and dup'ing /dev/null to that FD.. Hooray for strace..
Florian octo Forster
Hacker in training
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