bandwidthd for Debian
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Configuring bandwidthd:
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Bandwidthd needs to be configured manually. This is done in
/etc/bandwidthd/bandwidthd.conf which is pretty self-explaning and also has
helpful comments. Theres always "man bandwidthd.conf" too.
You should have atleast one "subnet" declaration and "dev".


Choosing package:
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As of 2.0.1+cvs20050208-2 the bandwidthd source now produces two packages when
built. The "bandwidthd" package is the traditional bandwidthd from the 1.x
branch. It tracks the traffic and generates static html and graphs.
The new package "bandwidthd-pgsql" is the newly introduced alternative method in
2.x where you can have multiple "sensors" (bandwidthd which only collect
statistics without writing any graphs) and sends it in to a central PostgreSQL
database. The data from the PostgreSQL database is presented via a dynamic
PHP-based web-interface instead of static html pages.
I suggest not using "bandwidthd-pgsql" unless you really need multiple sensors
support, are confortable with PostgreSQL and hacking PHP.


Defunct bandwidthd processes:
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Are you seeing defunct bandwidthd processes and afraid something has gone
wrong?

Having some defunct processes is perfectly normal. They are finished grapher
children which hasn't been reaped yet. They will be reaped right before the
next grahing run, which will produce new defunct bandwidthd processes once they
are done graphing. This is used to detect if the previous graphing run is
finished when a new one is started (if there aren't any children to reap,
the current graphing run will be skipped).

So unless the graphing takes very long time on your system you'll have
defunct bandwidthd processes almost all the time when running bandwidthd.
They aren't stuck forever though so don't worry.


Differences between this package and the upstream source:
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- Files are NOT all in the same directory.
	binary: /usr/sbin/bandwidthd
	config: /etc/bandwidthd/bandwidthd.conf
	cdf logs: /var/lib/bandwidthd/
	webpages: /var/lib/bandwidthd/htdocs/
	(you need to "ln -s /var/lib/bandwidthd/htdocs/ /var/www/bandwithd"
	 if you want to make the webpages reachable via the web.)
- writes pidfile of first process in /var/run/bandwidthd.pid
  (Merged upstream in 2.x)
- main process (get pid from pidfile!) collects child pids.
  (Merged upstream in 2.x)
- SIGTERM to main process shuts down all bandwidthd proccesses.
  (Merged upstream in 2.x)
- SIGHUP to main process triggers logrotate in all processes.
  (Merged upstream in 2.x)
- Includes manpages for bandwidthd(8) and bandwidthd.conf(5).
  FIXME: needs updating for postgresql-options.
- Includes init.d-script (/etc/init.d/bandwidthd) to manage bandwidthd.

Changes are all to make it behave like a normal debian packaged daemon would,
and you'll probably see more of this included by upstream in the future.