rrdtool plugin: Fix flushing

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

diff --git a/src/collectd.conf.pod b/src/collectd.conf.pod
index 9c97137..27acc99 100644 (file)
--- a/src/collectd.conf.pod
+++ b/src/collectd.conf.pod
@@ -338,7 +338,7 @@ is enabled by default.
 =item B<PostCacheChain> I<ChainName>
 
 Configure the name of the "pre-cache chain" and the "post-cache chain". Please
 =item B<PostCacheChain> I<ChainName>
 
 Configure the name of the "pre-cache chain" and the "post-cache chain". Please

-see L<FILTER CONFIGURATION> below on information on chains and how these
+see L</"FILTER CONFIGURATION"> below on information on chains and how these

 setting change the daemon's behavior.
 
 =back
 setting change the daemon's behavior.
 
 =back


@@ -1358,6 +1358,8 @@ Select I<cgroup> based on the name. Whether only matching I<cgroups> are
 collected or if they are ignored is controlled by the B<IgnoreSelected> option;
 see below.
 
 collected or if they are ignored is controlled by the B<IgnoreSelected> option;
 see below.
 

+See F</"IGNORELISTS"> for details.
+

 =item B<IgnoreSelected> B<true>|B<false>
 
 Invert the selection: If set to true, all cgroups I<except> the ones that
 =item B<IgnoreSelected> B<true>|B<false>
 
 Invert the selection: If set to true, all cgroups I<except> the ones that


@@ -2254,14 +2256,20 @@ values. Defaults to the global hostname setting.
 
 Select partitions based on the devicename.
 
 
 Select partitions based on the devicename.
 

+See F</"IGNORELISTS"> for details.
+

 =item B<MountPoint> I<Directory>
 
 Select partitions based on the mountpoint.
 
 =item B<MountPoint> I<Directory>
 
 Select partitions based on the mountpoint.
 

+See F</"IGNORELISTS"> for details.
+

 =item B<FSType> I<FSType>
 
 Select partitions based on the filesystem type.
 
 =item B<FSType> I<FSType>
 
 Select partitions based on the filesystem type.
 

+See F</"IGNORELISTS"> for details.
+

 =item B<IgnoreSelected> B<true>|B<false>
 
 Invert the selection: If set to true, all partitions B<except> the ones that
 =item B<IgnoreSelected> B<true>|B<false>
 
 Invert the selection: If set to true, all partitions B<except> the ones that


@@ -2323,6 +2331,8 @@ is interpreted as a regular expression. Examples:
   Disk "sdd"
   Disk "/hda[34]/"
 
   Disk "sdd"
   Disk "/hda[34]/"
 

+See F</"IGNORELISTS"> for details.
+

 =item B<IgnoreSelected> B<true>|B<false>
 
 Sets whether selected disks, i.E<nbsp>e. the ones matches by any of the B<Disk>
 =item B<IgnoreSelected> B<true>|B<false>
 
 Sets whether selected disks, i.E<nbsp>e. the ones matches by any of the B<Disk>


@@ -2828,6 +2838,8 @@ TCP-Port to connect to. Defaults to B<7634>.
 Select this interface. By default these interfaces will then be collected. For
 a more detailed description see B<IgnoreSelected> below.
 
 Select this interface. By default these interfaces will then be collected. For
 a more detailed description see B<IgnoreSelected> below.
 

+See F</"IGNORELISTS"> for details.
+

 =item B<IgnoreSelected> I<true>|I<false>
 
 If no configuration if given, the B<interface>-plugin will collect data from
 =item B<IgnoreSelected> I<true>|I<false>
 
 If no configuration if given, the B<interface>-plugin will collect data from


@@ -2889,6 +2901,8 @@ This option is only available on Solaris.
 
 Selects sensors to collect or to ignore, depending on B<IgnoreSelected>.
 
 
 Selects sensors to collect or to ignore, depending on B<IgnoreSelected>.
 

+See F</"IGNORELISTS"> for details.
+

 =item B<IgnoreSelected> I<true>|I<false>
 
 If no configuration if given, the B<ipmi> plugin will collect data from all
 =item B<IgnoreSelected> I<true>|I<false>
 
 If no configuration if given, the B<ipmi> plugin will collect data from all


@@ -2945,6 +2959,8 @@ comment or the number.
 Select this irq. By default these irqs will then be collected. For a more
 detailed description see B<IgnoreSelected> below.
 
 Select this irq. By default these irqs will then be collected. For a more
 detailed description see B<IgnoreSelected> below.
 

+See F</"IGNORELISTS"> for details.
+

 =item B<IgnoreSelected> I<true>|I<false>
 
 If no configuration if given, the B<irq>-plugin will collect data from all
 =item B<IgnoreSelected> I<true>|I<false>
 
 If no configuration if given, the B<irq>-plugin will collect data from all


@@ -3168,6 +3184,8 @@ Select md devices based on device name. The I<device name> is the basename of
 the device, i.e. the name of the block device without the leading C</dev/>.
 See B<IgnoreSelected> for more details.
 
 the device, i.e. the name of the block device without the leading C</dev/>.
 See B<IgnoreSelected> for more details.
 

+See F</"IGNORELISTS"> for details.
+

 =item B<IgnoreSelected> B<true>|B<false>
 
 Invert device selection: If set to B<true>, all md devices B<except> those
 =item B<IgnoreSelected> B<true>|B<false>
 
 Invert device selection: If set to B<true>, all md devices B<except> those


@@ -4321,6 +4339,8 @@ regular and exact matching are case sensitive.
 If no volume was specified at all for either of the three options, that data
 will be collected for all available volumes.
 
 If no volume was specified at all for either of the three options, that data
 will be collected for all available volumes.
 

+See F</"IGNORELISTS"> for details.
+

 =item B<IgnoreSelectedIO> B<true>|B<false>
 
 =item B<IgnoreSelectedOps> B<true>|B<false>
 =item B<IgnoreSelectedIO> B<true>|B<false>
 
 =item B<IgnoreSelectedOps> B<true>|B<false>


@@ -4506,6 +4526,8 @@ Here are some examples to help you understand the above text more easily:
     Filter "ppp0" "u32-1:0"
   </Plugin>
 
     Filter "ppp0" "u32-1:0"
   </Plugin>
 

+See F</"IGNORELISTS"> for details.
+

 =item B<IgnoreSelected>
 
 The behavior is the same as with all other similar plugins: If nothing is
 =item B<IgnoreSelected>
 
 The behavior is the same as with all other similar plugins: If nothing is


@@ -4698,7 +4720,7 @@ so the values will not loop.
 =item B<ReportStats> B<true>|B<false>
 
 The network plugin cannot only receive and send statistics, it can also create
 =item B<ReportStats> B<true>|B<false>
 
 The network plugin cannot only receive and send statistics, it can also create

-statistics about itself. Collected data included the number of received and
+statistics about itself. Collectd data included the number of received and

 sent octets and packets, the length of the receive queue and the number of
 values handled. When set to B<true>, the I<Network plugin> will make these
 statistics available. Defaults to B<false>.
 sent octets and packets, the length of the receive queue and the number of
 values handled. When set to B<true>, the I<Network plugin> will make these
 statistics available. Defaults to B<false>.


@@ -5028,6 +5050,8 @@ C</10.F10FCA000800/temperature>). B<IgnoreSelected> is not used.
 As there can be multiple devices on the bus you can list multiple sensor (use
 multiple B<Sensor> elements).
 
 As there can be multiple devices on the bus you can list multiple sensor (use
 multiple B<Sensor> elements).
 

+See F</"IGNORELISTS"> for details.
+

 =item B<IgnoreSelected> I<true>|I<false>
 
 If no configuration is given, the B<onewire> plugin will collect data from all
 =item B<IgnoreSelected> I<true>|I<false>
 
 If no configuration is given, the B<onewire> plugin will collect data from all


@@ -5352,10 +5376,10 @@ multiple hosts.
 =item B<Interval> I<Seconds>
 
 Sets the interval in which to send ICMP echo packets to the configured hosts.
 =item B<Interval> I<Seconds>
 
 Sets the interval in which to send ICMP echo packets to the configured hosts.

-This is B<not> the interval in which statistics are queries from the plugin but
-the interval in which the hosts are "pinged". Therefore, the setting here
-should be smaller than or equal to the global B<Interval> setting. Fractional
-times, such as "1.24" are allowed.
+This is B<not> the interval in which metrics are read from the plugin but the
+interval in which the hosts are "pinged". Therefore, the setting here should be
+smaller than or equal to the global B<Interval> setting. Fractional times, such
+as "1.24" are allowed.

 
 Default: B<1.0>
 
 
 Default: B<1.0>
 


@@ -6087,6 +6111,8 @@ Whether only matched values are selected or all matched values are ignored
 depends on the B<IgnoreSelected>. By default, only matched values are selected.
 If no value is configured at all, all values will be selected.
 
 depends on the B<IgnoreSelected>. By default, only matched values are selected.
 If no value is configured at all, all values will be selected.
 

+See F</"IGNORELISTS"> for details.
+

 =item B<IgnoreSelected> B<true>|B<false>
 
 If set to B<true>, inverts the selection made by B<Value>, i.E<nbsp>e. all
 =item B<IgnoreSelected> B<true>|B<false>
 
 If set to B<true>, inverts the selection made by B<Value>, i.E<nbsp>e. all


@@ -6440,7 +6466,8 @@ one (exclusive).
 
 When the C<rrdtool> plugin uses a cache (by setting B<CacheTimeout>, see below)
 it writes all values for a certain RRD-file if the oldest value is older than
 
 When the C<rrdtool> plugin uses a cache (by setting B<CacheTimeout>, see below)
 it writes all values for a certain RRD-file if the oldest value is older than

-(or equal to) the number of seconds specified. If some RRD-file is not updated
+(or equal to) the number of seconds specified by B<CacheTimeout>.
+That check happens on new values arriwal. If some RRD-file is not updated

 anymore for some reason (the computer was shut down, the network is broken,
 etc.) some values may still be in the cache. If B<CacheFlush> is set, then the
 entire cache is searched for entries older than B<CacheTimeout> seconds and
 anymore for some reason (the computer was shut down, the network is broken,
 etc.) some values may still be in the cache. If B<CacheFlush> is set, then the
 entire cache is searched for entries older than B<CacheTimeout> seconds and


@@ -6449,6 +6476,10 @@ does nothing under normal circumstances, this value should not be too small.
 900 seconds might be a good value, though setting this to 7200 seconds doesn't
 normally do much harm either.
 
 900 seconds might be a good value, though setting this to 7200 seconds doesn't
 normally do much harm either.
 

+Default value for this option is 10x of B<CacheTimeout>.
+If value of B<CacheFlush> less than value of B<CacheTimeout> then default value
+used too.
+

 =item B<CacheTimeout> I<Seconds>
 
 If this option is set to a value greater than zero, the C<rrdtool plugin> will
 =item B<CacheTimeout> I<Seconds>
 
 If this option is set to a value greater than zero, the C<rrdtool plugin> will


@@ -6515,6 +6546,8 @@ on the B<IgnoreSelected> below. For example, the option "B<Sensor>
 I<it8712-isa-0290/voltage-in1>" will cause collectd to gather data for the
 voltage sensor I<in1> of the I<it8712> on the isa bus at the address 0290.
 
 I<it8712-isa-0290/voltage-in1>" will cause collectd to gather data for the
 voltage sensor I<in1> of the I<it8712> on the isa bus at the address 0290.
 

+See F</"IGNORELISTS"> for details.
+

 =item B<IgnoreSelected> I<true>|I<false>
 
 If no configuration if given, the B<sensors>-plugin will collect data from all
 =item B<IgnoreSelected> I<true>|I<false>
 
 If no configuration if given, the B<sensors>-plugin will collect data from all


@@ -6624,6 +6657,8 @@ is interpreted as a regular expression. Examples:
   Disk "sdd"
   Disk "/hda[34]/"
 
   Disk "sdd"
   Disk "/hda[34]/"
 

+See F</"IGNORELISTS"> for details.
+

 =item B<IgnoreSelected> B<true>|B<false>
 
 Sets whether selected disks, i.E<nbsp>e. the ones matches by any of the B<Disk>
 =item B<IgnoreSelected> B<true>|B<false>
 
 Sets whether selected disks, i.E<nbsp>e. the ones matches by any of the B<Disk>


@@ -7235,6 +7270,8 @@ Selects the name of the thermal device that you want to collect or ignore,
 depending on the value of the B<IgnoreSelected> option. This option may be
 used multiple times to specify a list of devices.
 
 depending on the value of the B<IgnoreSelected> option. This option may be
 used multiple times to specify a list of devices.
 

+See F</"IGNORELISTS"> for details.
+

 =item B<IgnoreSelected> I<true>|I<false>
 
 Invert the selection: If set to true, all devices B<except> the ones that
 =item B<IgnoreSelected> I<true>|I<false>
 
 Invert the selection: If set to true, all devices B<except> the ones that


@@ -9436,6 +9473,48 @@ be an FQDN.
    Target "write"
  </Chain>
 
    Target "write"
  </Chain>
 

+=head1 IGNORELISTS
+
+B<Ignorelists> are a generic framework to either ignore some metrics or report
+specific metircs only. Plugins usually provide one or more options to specify
+the items (mounts points, devices, ...) and the boolean option
+C<IgnoreSelected>.
+
+=over 4
+
+=item B<Select> I<String>
+
+Selects the item I<String>. This option often has a plugin specific name, e.g.
+B<Sensor> in the C<sensors> plugin. It is also plugin specific what this string
+is compared to. For example, the C<df> plugin's B<MountPoint> compares it to a
+mount point and the C<sensors> plugin's B<Sensor> compares it to a sensor name.
+
+By default, this option is doing a case-sensitive full-string match. The
+following config will match C<foo>, but not C<Foo>:
+
+  Select "foo"
+
+If I<String> starts and ends with C</> (a slash), the string is compiled as a
+I<regular expression>. For example, so match all item starting with C<foo>, use
+could use the following syntax:
+
+  Select "/^foo/"
+
+The regular expression is I<not> anchored, i.e. the following config will match
+C<foobar>, C<barfoo> and C<AfooZ>:
+
+  Select "/foo/"
+
+The B<Select> option may be repeated to select multiple items.
+
+=item B<IgnoreSelected> B<true>|B<false>
+
+If set to B<true>, matching metrics are I<ignored> and all other metrics are
+collected. If set to B<false>, matching metrics are I<collected> and all other
+metrics are ignored.
+
+=back
+

 =head1 SEE ALSO
 
 L<collectd(1)>,
 =head1 SEE ALSO
 
 L<collectd(1)>,