</Plugin>
In the B<Plugin> block, there may be one or more B<URL> blocks, each defining a
-URL to be fetched via HTTP (using libcurl). Within each B<URL> block there are
+URL to be fetched using libcurl. Within each B<URL> block there are
options which specify the connection parameters, for example authentication
information, and one or more B<XPath> blocks.
=item B<User> I<Username>
Username to use when connecting to the database. The user does not have to be
-granted any privileges (which is synonym to granting the C<USAGE> privilege).
-Any existing MySQL user will do.
+granted any privileges (which is synonym to granting the C<USAGE> privilege),
+unless you want to collectd replication statistics (see B<MasterStats> and
+B<SlaveStats> below). In this case, the user needs the C<REPLICATION CLIENT>
+(or C<SUPER>) privileges. Else, any existing MySQL user will do.
=item B<Password> I<Password>
=item B<SlaveStats> I<true|false>
-Enable the collection of master / slave statistics in a replication setup.
+Enable the collection of master / slave statistics in a replication setup. In
+order to be able to get access to these statistics, the user needs special
+privileges. See the B<User> documentation above.
=item B<SlaveNotifications> I<true|false>
This plugin sends a desktop notification to a notification daemon, as defined
in the Desktop Notification Specification. To actually display the
notifications, B<notification-daemon> is required and B<collectd> has to be
-able to access the X server.
+able to access the X server (i.E<nbsp>e., the C<DISPLAY> and C<XAUTHORITY>
+environment variables have to be set correctly) and the D-Bus message bus.
The Desktop Notification Specification can be found at
L<http://www.galago-project.org/specs/notification/>.
=head2 Plugin C<swap>
The I<Swap plugin> collects information about used and available swap space. On
-I<Solaris>, the following options are available:
+I<Linux> and I<Solaris>, the following options are available:
=over 4
=item B<ReportByDevice> B<false>|B<true>
-Configures how to report physical swap devices. If set to B<false> is used (the
+Configures how to report physical swap devices. If set to B<false> (the
default), the summary over all swap devices is reported only, i.e. the globally
used and available space over all devices. If B<true> is configured, the used
and available space of each device will be reported separately.
-This option is only available if the I<Swap plugin> can use the L<swapctl(2)>
-mechanism under I<Solaris>.
+This option is only available if the I<Swap plugin> can read C</proc/swaps>
+(under Linux) or use the L<swapctl(2)> mechanism (under I<Solaris>).
=back