+=encoding UTF-8
+
=head1 NAME
collectd.conf - Configuration for the system statistics collection daemon B<collectd>
Include "/etc/collectd.d/*.conf"
+Starting with version 5.3, this may also be a block in which further options
+affecting the behavior of B<Include> may be specified. The following option is
+currently allowed:
+
+ <Include "/etc/collectd.d">
+ Filter "*.conf"
+ </Include>
+
+=over 4
+
+=item B<Filter> I<pattern>
+
If the C<fnmatch> function is available on your system, a shell-like wildcard
I<pattern> may be specified to filter which files to include. This may be used
in combination with recursively including a directory to easily be able to
arbitrarily mix configuration files and other documents (e.g. README files).
-The following statement is similar to the example above but includes all files
+The given example is similar to the first example above but includes all files
matching C<*.conf> in any subdirectory of C</etc/collectd.d>:
Include "/etc/collectd.d" "*.conf"
+=back
+
If more than one files are included by a single B<Include> option, the files
will be included in lexicographical order (as defined by the C<strcmp>
function). Thus, you can e.E<nbsp>g. use numbered prefixes to specify the
default value is B<5>, but you may want to increase this if you have more than
five plugins that may take relatively long to write to.
+=item B<WriteQueueLengthLimitHigh> I<Num>
+=item B<WriteQueueLengthLimitLow> I<Num>
+
+Default value for high limit is 0 (no limit).
+Default value for low limit is 50% of high limit.
+
+When the write queue size becomes bigger than the high limit, values I<will> be dropped.
+When the write queue size is between low and high, values I<may> be dropped (depending
+on the queue size)
+
+If high limit is set to 0, there is no limit. This is the default.
+If high limit is set, but not low limit, low will be computed as 50% of high.
+
+If you do not want to randomly drop values when the queue size is between low
+and high value, set the same value for low and high. When low=high and when the
+queue size is bigger, values are just dropped until the queue size becomes smaller.
+
=item B<Hostname> I<Name>
Sets the hostname that identifies a host. If you omit this setting, the
many small files are stored on the disk. This is a usual scenario for mail
transfer agents and web caches.
-=item B<ReportPercentage> B<false>|B<true>
+=item B<ValuesAbsolute> B<true>|B<false>
-Enables or disables reporting of disk space and inodes as a percentage.
-Defaults to B<false>.
+Enables or disables reporting of free, used and used disk space in 1K-blocks.
+Defaults to true.
+
+=item B<ValuesPercentage> B<true>|B<false>
+
+Enables or disables reporting of free, used and used disk space in percentage.
+Defaults to false.
-This is useful for deploying I<collectd> on the cloud, where machines with
-different disk size may exist. Then it is more practical to configure
-thresholds based on relative disk size.
+This is useful for deploying collectd on the cloud, where machines with
+different disk size may exist. Then it is more practical to configure thresholds
+based on relative disk size.
=back
=head2 Plugin C<varnish>
-The Varnish plugin collects information about Varnish, an HTTP accelerator.
+The I<varnish plugin> collects information about Varnish, an HTTP accelerator.
+
+Synopsis:
+
+ <Plugin "varnish">
+ <Instance "example">
+ CollectCache true
+ CollectConnections true
+ CollectBackend true
+ CollectSHM true
+ CollectESI false
+ CollectFetch false
+ CollectHCB false
+ CollectSMA false
+ CollectSMS false
+ CollectSM false
+ CollectTotals false
+ CollectWorkers false
+ </Instance>
+ </Plugin>
+
+The configuration consists of one or more E<lt>B<Instance>E<nbsp>I<Name>E<gt>
+blocks. I<Name> is the parameter passed to "varnishd -n". If left empty, it
+will collectd statistics from the default "varnishd" instance (this should work
+fine in most cases).
+
+Inside each E<lt>B<Instance>E<gt> blocks, the following options are recognized:
=over 4
Host "localhost"
Port "2003"
Protocol "udp"
+ LogSendErrors true
Prefix "collectd"
</Node>
</Plugin>
Protocol to use when connecting to I<Graphite>. Defaults to C<tcp>.
+=item B<LogSendErrors> B<false>|B<true>
+
+If set to B<true> (the default), logs errors when sending data to I<Graphite>.
+If set to B<false>, it will not log the errors. This is especially useful when
+using Protocol UDP since many times we want to use the "fire-and-forget"
+approach and logging errors fills syslog with unneeded messages.
+
=item B<Prefix> I<String>
When set, I<String> is added in front of the host name. Dots and whitespace are
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