provide information about issues and significant situations to the user.
Several loglevels let you suppress uninteresting messages.
+Please note that some plugins, that provide other means of communicating with
+the daemon, have manpages of their own to describe their functionality in more
+detail. In particular those are L<collectd-exec(5)>, L<collectd-unixsock(5)>,
+...
+
=head1 SPECIAL PLUGINS
=head2 apache
Each line is limited to 256 characters (including the newline character).
Longer lines will be ignored.
-=head2 exec
-
-The C<exec> plugin forks of an executable and reads back values that it writes
-to C<STDOUT>. The executable is forked kind of as L<init> does: It is forked
-once and not again until it exits. If it exited, it will be forked again after
-at most I<Interval> seconds. It is perfectly legal for the executable to run
-for a long time and continuously write values to C<STDOUT>.
-
-The forked executable is expected to print values to C<STDOUT>. The expected
-format is as follows:
-
-=over 4
-
-=item
-
-Each line beginning with a C<#> (hash mark) is ignored.
-
-=item
-
-Any other line must be of the form C<I<type>,I<type-instance>,I<value>>, where
-I<type> is either B<counter> or B<gauge>, I<type-instance> may not contain
-C<,> (comma), C</> (slash) and C<\0> (null byte) and I<value> is either an
-integer (if I<type> is B<counter>) or a floating-point number (if I<type> is
-B<gauge>).
-
-=back
-
-The values are always considered to be "fresh", i.E<nbsp>e. the time is set to
-"now".
-
-When collectd exits it sends a B<SIGTERM> to all still running
-child-processes upon which they have to quit.
-
=head2 mysql
Requires B<mysqlclient> to be installed. It connects to the database when
=head1 SEE ALSO
-L<collectd.conf(5)>, L<rrdtool(1)>, L<sensors(1)>, L<hddtemp(8)>,
-L<mbmon(1)>,
+L<collectd.conf(5)>,
+L<collectd-exec(5)>,
+L<collectd-unixsock(5)>,
+L<hddtemp(8)>,
L<kstat(3KSTAT)>,
+L<mbmon(1)>,
+L<rrdtool(1)>,
+L<sensors(1)>,
L<http://collectd.org/>
=head1 AUTHOR