=back
+=head2 Plugin C<memcached>
+
+The C<memcached plugin> connects to a memcached server and queries statistics
+about cache utilization, memory and bandwidth used.
+L<http://www.danga.com/memcached/>
+
+=over 4
+
+=item B<Host> I<Hostname>
+
+Hostname to connect to. Defaults to B<127.0.0.1>.
+
+=item B<Port> I<Port>
+
+TCP-Port to connect to. Defaults to B<11211>.
+
+=back
+
=head2 Plugin C<mysql>
The C<mysql plugin> requires B<mysqlclient> to be installed. It connects to the
=back
+=head2 Plugin C<nginx>
+
+This plugin collects the number of connections and requests handeled by the
+C<nginx daemon> (speak: engineE<nbsp>X), a HTTP and mail server/proxy. It
+queries the page provided by the C<ngx_http_stub_status_module> module, which
+isn't compiled by default. Please refer to
+L<http://wiki.codemongers.com/NginxStubStatusModule> for more information on
+how to compile and configure nginx and this module.
+
+The following options are accepted by the C<nginx plugin>:
+
+=over 4
+
+=item B<URL> I<http://host/nginx_status>
+
+Sets the URL of the C<ngx_http_stub_status_module> output.
+
+=item B<User> I<Username>
+
+Optional user name needed for authentication.
+
+=item B<Password> I<Password>
+
+Optional password needed for authentication.
+
+=item B<CACert> I<File>
+
+File that holds one or more SSL certificates. If you want to use HTTPS you will
+possibly need this option. What CA certificates come bundled with C<libcurl>
+and are checked by default depends on the distribution you use.
+
+=back
+
=head2 Plugin C<ntpd>
=over 4
=head2 Plugin C<perl>
-=over 4
-
-=item B<LoadPlugin> I<Plugin>
-
-Loads the Perl plugin I<Plugin>. This does basically the same as B<use> would
-do in a Perl program.
-
-=item B<BaseName> I<Name>
-
-Prepends I<Name>B<::> to all plugin names loaded after this option. This is
-provided for convenience to keep plugin names short.
-
-=item B<IncludeDir> I<Dir>
-
-Adds I<Dir> to the B<@INC> array. This is the same as using the B<-IDir>
-command line option or B<use lib Dir> in the source code.
-
-=back
+This plugin embeds a Perl-interpreter into collectd and provides an interface
+to collectd's plugin system. See L<collectd-perl(5)> for its documentation.
=head2 Plugin C<ping>
L<collectd(1)>,
L<collectd-exec(5)>,
+L<collectd-perl(5)>,
L<collectd-unixsock(5)>,
L<hddtemp(8)>,
L<kstat(3KSTAT)>,