statsd plugin: Implement the "Delete{Counters,Timers,Gauges}" options.

[collectd.git] / src / collectd.conf.pod

diff --git a/src/collectd.conf.pod b/src/collectd.conf.pod
index b66c4350305a8a217b2ebbdfbd78aa6341d54302..a16f29a1fd83b1982fbaa3791ee03d1a421dbebd 100644 (file)
--- a/src/collectd.conf.pod
+++ b/src/collectd.conf.pod
@@ -5103,6 +5103,43 @@ Since the configuration of the C<snmp plugin> is a little more complicated than
 other plugins, its documentation has been moved to an own manpage,
 L<collectd-snmp(5)>. Please see there for details.
 
+=head2 Plugin C<statsd>
+
+The I<statsd plugin> listens to a UDP socket, reads "events" in the statsd
+protocol and dispatches rates or other aggregates of these numbers
+periodically.
+
+The plugin implements the I<Counter>, I<Timer> and I<Gauge> types which are
+dispatched as C<derive>, C<latency> and C<gauge> respectively.
+
+The following configuration options are valid:
+
+=over 4
+
+=item B<Host> I<Host>
+
+Bind to the hostname / address I<Host>. By default, the plugin will bind to the
+"any" address, i.e. accept packets sent to any of the hosts addresses.
+
+=item B<Port> I<Port>
+
+UDP port to listen to. This can be either a service name or a port number.
+Defaults to C<8125>.
+
+=item B<DeleteCounters> B<false>|B<true>
+
+=item B<DeleteTimers> B<false>|B<true>
+
+=item B<DeleteGauges> B<false>|B<true>
+
+These options control what happens if metrics are not updated in an interval.
+If set to B<False>, the default, metrics are dispatched unchanged, i.e. the
+rate of counters will be zero, timers report C<NaN> and gauges are unchanged.
+If set to B<True>, the such metrics are not dispatched and removed from the
+internal cache.
+
+=back
+
 =head2 Plugin C<swap>
 
 The I<Swap plugin> collects information about used and available swap space. On
@@ -6034,7 +6071,7 @@ Synopsis:
      Protocol UDP
      StoreRates true
      AlwaysAppendDS false
-     Delay 10
+     TTLFactor 2.0
    </Node>
    Tag "foobar"
  </Plugin>
@@ -6081,6 +6118,15 @@ If set the B<true>, append the name of the I<Data Source> (DS) to the
 identifies a metric in I<Riemann>. If set to B<false> (the default), this is
 only done when there is more than one DS.
 
+=item B<TTLFactor> I<Factor>
+
+I<Riemann> events have a I<Time to Live> (TTL) which specifies how long each
+event is considered active. I<collectd> populates this field based on the
+metrics interval setting. This setting controls the factor with which the
+interval is multiplied to set the TTL. The default value is B<2.0>. Unless you
+know exactly what you're doing, you should only increase this setting from its
+default value.
+
 =back
 
 =item B<Tag> I<String>