BaseDir "/path/to/data/"
PIDFile "/path/to/pidfile/collectd.pid"
Server "123.123.123.123" 12345
-
+
LoadPlugin cpu
LoadPlugin load
-
+
<LoadPlugin df>
Interval 3600
</LoadPlugin>
-
+
LoadPlugin ping
<Plugin ping>
Host "example.org"
<Aggregation>
Plugin "cpu"
Type "cpu"
-
+
GroupBy "Host"
GroupBy "TypeInstance"
-
+
CalculateSum true
CalculateAverage true
</Aggregation>
Plugin "cpu"
PluginInstance "/[0,2,4,6,8]$/"
Type "cpu"
-
+
SetPlugin "cpu"
SetPluginInstance "even-%{aggregation}"
-
+
GroupBy "Host"
GroupBy "TypeInstance"
-
+
CalculateAverage true
</Aggregation>
</Plugin>
# GraphitePrefix "collectd."
# GraphiteEscapeChar "_"
</Publish>
-
+
# Receive values from an AMQP broker
<Subscribe "some_name">
Host "localhost"
=back
+=head2 Plugin C<aquaero>
+
+This plugin collects the value of the available sensors in an
+I<AquaeroE<nbsp>5> board. AquaeroE<nbsp>5 is a water-cooling controller board,
+manufactured by Aqua Computer GmbH L<http://www.aquacomputer.de/>, with a USB2
+connection for monitoring and configuration. The board can handle multiple
+temperature sensors, fans, water pumps and water level sensors and adjust the
+output settings such as fan voltage or power used by the water pump based on
+the available inputs using a configurable controller included in the board.
+This plugin collects all the available inputs as well as some of the output
+values chosen by this controller. The plugin is based on the I<libaquaero5>
+library provided by I<aquatools-ng>.
+
+=over 4
+
+=item B<Device> I<DevicePath>
+
+Device path of the AquaeroE<nbsp>5's USB HID (human interface device), usually
+in the form C</dev/usb/hiddevX>. If this option is no set the plugin will try
+to auto-detect the Aquaero 5 USB device based on vendor-ID and product-ID.
+
+=back
+
=head2 Plugin C<ascent>
This plugin collects information about an Ascent server, a free server for the
ParseTime false
OpCodes true
QTypes true
-
+
ServerStats true
ZoneMaintStats true
ResolverStats false
MemoryStats true
-
+
<View "_default">
QTypes true
ResolverStats true
CacheRRSets true
-
+
Zone "127.in-addr.arpa/IN"
</View>
</Plugin>
=back
+=head2 Plugin C<cpu>
+
+The I<CPU plugin> collects CPU usage metrics.
+
+The following configuration options are available:
+
+=over 4
+
+=item B<ReportActive> B<false>|B<true>
+
+Reports non-idle CPU usage as the "active" value. Defaults to false.
+
+=item B<ReportByCpu> B<false>|B<true>
+
+When true reports usage for all cores. When false, reports cpu usage
+aggregated over all cores. Implies ValuesPercentage when false.
+Defaults to true.
+
+=item B<ValuesPercentage> B<false>|B<true>
+
+When true report percentage usage instead of tick values. Defaults to false.
+
+=back
+
+
=head2 Plugin C<cpufreq>
This plugin doesn't have any options. It reads
Password to use if authorization is required to read the page.
+=item B<Digest> B<true>|B<false>
+
+Enable HTTP digest authentication.
+
=item B<VerifyPeer> B<true>|B<false>
Enable or disable peer SSL certificate verification. See
=head2 Plugin C<curl_json>
-The B<curl_json plugin> uses B<libcurl> (L<http://curl.haxx.se/>) and
-B<libyajl> (L<http://www.lloydforge.org/projects/yajl/>) to retrieve JSON data
-via cURL. This can be used to collect values from CouchDB documents (which are
-stored JSON notation), for example.
+The B<curl_json plugin> collects values from JSON data to be parsed by
+B<libyajl> (L<http://www.lloydforge.org/projects/yajl/>) retrieved via
+either B<libcurl> (L<http://curl.haxx.se/>) or read directly from a
+unix socket. The former can be used, for example, to collect values
+from CouchDB documents (which are stored JSON notation), and the
+latter to collect values from a uWSGI stats socket.
-The following example will collect several values from the built-in `_stats'
-runtime statistics module of CouchDB
+The following example will collect several values from the built-in
+C<_stats> runtime statistics module of I<CouchDB>
(L<http://wiki.apache.org/couchdb/Runtime_Statistics>).
<Plugin curl_json>
</URL>
</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) and one or more B<Key> blocks.
-The B<Key> string argument must be in a path format, which is used to collect a
-value from a JSON map object. If a path element of B<Key> is the
-I<*>E<nbsp>wildcard, the values for all keys will be collectd.
+This example will collect data directly from a I<uWSGI> "Stats Server" socket.
+
+ <Plugin curl_json>
+ <Sock "/var/run/uwsgi.stats.sock">
+ Instance "uwsgi"
+ <Key "workers/*/requests">
+ Type "http_requests"
+ </Key>
+
+ <Key "workers/*/apps/*/requests">
+ Type "http_requests"
+ </Key>
+ </Sock>
+ </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) or B<Sock>
+blocks defining a unix socket to read JSON from directly. Each of
+these blocks may have one or more B<Key> blocks.
+
+The B<Key> string argument must be in a path format. Each component is
+used to match the key from a JSON map or the index of an JSON
+array. If a path component of a B<Key> is a I<*>E<nbsp>wildcard, the
+values for all map keys or array indices will be collectd.
The following options are valid within B<URL> blocks:
Sets the plugin instance to I<Instance>.
=item B<User> I<Name>
+
=item B<Password> I<Password>
+
+=item B<Digest> B<true>|B<false>
+
=item B<VerifyPeer> B<true>|B<false>
+
=item B<VerifyHost> B<true>|B<false>
+
=item B<CACert> I<file>
+
=item B<Header> I<Header>
+
=item B<Post> I<Body>
These options behave exactly equivalent to the appropriate options of the
=item B<Password> I<Password>
+=item B<Digest> B<true>|B<false>
+
=item B<VerifyPeer> B<true>|B<false>
=item B<VerifyHost> B<true>|B<false>
=item B<ValuesAbsolute> B<true>|B<false>
-Enables or disables reporting of free, used and used disk space in 1K-blocks.
-Defaults to true.
+Enables or disables reporting of free and used disk space in 1K-blocks.
+Defaults to B<true>.
-=item B<ValuesPercentage> B<true>|B<false>
+=item B<ValuesPercentage> B<false>|B<true>
-Enables or disables reporting of free, used and used disk space in percentage.
-Defaults to false.
+Enables or disables reporting of free and used disk space in percentage.
+Defaults to B<false>.
-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.
+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.
=back
=back
++=head2 Plugin C<load>
+
+The I<Load plugin> collects the system load. These numbers give a rough overview
+over the utilization of a machine. The system load is defined as the number of
+runnable tasks in the run-queue and is provided by many operating systems as a
+one, five or fifteen minute average.
+
+The following configuration options are available:
+
+=over 4
+
+=item B<ReportRelative> B<false>|B<true>
+
+When enabled, system load divided by number of available CPU cores is reported
+for intervals 1 min, 5 min and 15 min. Defaults to false.
+
+=back
+
+
=head2 Plugin C<logfile>
=over 4
ShowCPU true
ShowCPUCores true
ShowMemory true
-
+
ShowTemperatures true
Temperature vddg
Temperature vddq
ShowPower true
Power total0
Power total1
- IgnoreSelectedPower true
+ IgnoreSelectedPower true
</Plugin>
The following options are valid inside the B<PluginE<nbsp>mic> block:
=item fout
-Fan Out
+Fan Out
=item vccp
=item total0
-Total power utilization averaged over Time Window 0 (uWatts).
+Total power utilization averaged over Time Window 0 (uWatts).
=item total1
-Total power utilization averaged over Time Window 0 (uWatts).
+Total power utilization averaged over Time Window 0 (uWatts).
=item inst
=item imax
-Max instantaneous power (uWatts).
+Max instantaneous power (uWatts).
=item pcie
-PCI-E connector power (uWatts).
+PCI-E connector power (uWatts).
=item c2x3
-2x3 connector power (uWatts).
+2x3 connector power (uWatts).
=item c2x4
-2x4 connector power (uWatts).
+2x4 connector power (uWatts).
=item vccp
-Core rail (uVolts).
+Core rail (uVolts).
=item vddg
-Uncore rail (uVolts).
+Uncore rail (uVolts).
=item vddq
-Memory subsystem rail (uVolts).
+Memory subsystem rail (uVolts).
+
+=back
=back
+=head2 Plugin C<memory>
+
+The I<memory plugin> provides the following configuration options:
+
+=over 4
+
+=item B<ValuesAbsolute> B<true>|B<false>
+
+Enables or disables reporting of physical memory usage in absolute numbers,
+i.e. bytes. Defaults to B<true>.
+
+=item B<ValuesPercentage> B<false>|B<true>
+
+Enables or disables reporting of physical memory usage in percentages, e.g.
+percent of physical memory used. Defaults to B<false>.
+
+This is useful for deploying I<collectd> in a heterogeneous environment in
+which the sizes of physical memory vary.
+
=back
=head2 Plugin C<modbus>
Type voltage
Instance "input-1"
</Data>
-
+
<Data "voltage-input-2">
RegisterBase 2
RegisterType float
Type voltage
Instance "input-2"
</Data>
-
+
<Host "modbus.example.com">
Address "192.168.0.42"
Port "502"
Interval 60
-
+
<Slave 1>
Instance "power-supply"
Collect "voltage-input-1"
User "username"
Password "aef4Aebe"
Interval 30
-
+
<WAFL>
Interval 30
GetNameCache true
GetBufferCache true
GetInodeCache true
</WAFL>
-
+
<Disks>
Interval 30
GetBusy true
</Disks>
-
+
<VolumePerf>
Interval 30
GetIO "volume0"
GetLatency "volume0"
IgnoreSelectedLatency false
</VolumePerf>
-
+
<VolumeUsage>
Interval 30
GetCapacity "vol0"
GetSnapshot "vol3"
IgnoreSelectedSnapshot false
</VolumeUsage>
-
+
<Quota>
Interval 60
</Quota>
-
+
<Snapvault>
Interval 30
</Snapvault>
-
+
<System>
Interval 30
GetCPULoad true
# Export to an internal server
# (demonstrates usage without additional options)
Server "collectd.internal.tld"
-
+
# Export to an external server
# (demonstrates usage with signature options)
<Server "collectd.external.tld">
=back
-=head2 Plugin "sigrok"
+=head2 Plugin C<sigrok>
-The I<sigrok> plugin uses libsigrok to retrieve measurements from any device
+The I<sigrok plugin> uses I<libsigrok> to retrieve measurements from any device
supported by the L<sigrok|http://sigrok.org/> project.
B<Synopsis>
LogLevel 3
<Device "AC Voltage">
Driver "fluke-dmm"
- Interval 10
- Conn "/dev/ttyUSB2"
+ MinimumInterval 10
+ Conn "/dev/ttyUSB2"
</Device>
<Device "Sound Level">
Driver "cem-dt-885x"
- Conn "/dev/ttyUSB1"
+ Conn "/dev/ttyUSB1"
</Device>
</Plugin>
=item B<LogLevel> B<0-5>
-The sigrok logging level to pass on to the collectd log, as a number 0-5.
-These levels correspond to None, Errors, Warnings, Informational, Debug
-and Spew, respectively. The default is 2 (Warnings). The sigrok log messages,
-regardless of their level, are always submitted to collectd at its INFO
-log level.
+The I<sigrok> logging level to pass on to the I<collectd> log, as a number
+between B<0> and B<5> (inclusive). These levels correspond to C<None>,
+C<Errors>, C<Warnings>, C<Informational>, C<Debug >and C<Spew>, respectively.
+The default is B<2> (C<Warnings>). The I<sigrok> log messages, regardless of
+their level, are always submitted to I<collectd> at its INFO log level.
-=item E<lt>B<Device> I<name>E<gt>
+=item E<lt>B<Device> I<Name>E<gt>
A sigrok-supported device, uniquely identified by this section's options. The
-I<name> is passed to collectd as the I<plugin instance>.
+I<Name> is passed to I<collectd> as the I<plugin instance>.
-=item B<Driver>
+=item B<Driver> I<DriverName>
The sigrok driver to use for this device.
-=item B<Conn>
+=item B<Conn> I<ConnectionSpec>
If the device cannot be auto-discovered, or more than one might be discovered
-by the driver, I<Conn> specifies the connection string to the device. It can
-be of the form of a serial port (I</dev/ttyUSB2>), or, in case of a non-serial
-USB-connected device, the USB VendorID/ProductID separated by a period
-(I<0403.6001>). A USB device can also be specified as bus.address
-(I<1.41>).
+by the driver, I<ConnectionSpec> specifies the connection string to the device.
+It can be of the form of a device path (e.g.E<nbsp>C</dev/ttyUSB2>), or, in
+case of a non-serial USB-connected device, the USB I<VendorID>B<.>I<ProductID>
+separated by a period (e.g.E<nbsp>C<0403.6001>). A USB device can also be
+specified as I<Bus>B<.>I<Address> (e.g.E<nbsp>C<1.41>).
-=item B<SerialComm>
+=item B<SerialComm> I<SerialSpec>
For serial devices with non-standard port settings, this option can be used
-to specify them in the form I<9600/8n1>. This should not be necessary; drivers
-know how to communicate with devices they support.
+to specify them in a form understood by I<sigrok>, e.g.E<nbsp>C<9600/8n1>.
+This should not be necessary; drivers know how to communicate with devices they
+support.
-=item B<Interval>
+=item B<MinimumInterval> I<Seconds>
-Specifies the minimum time between measurement dispatches to collectd, in
-seconds. Since some sigrok-supported devices can acquire measurements many
+Specifies the minimum time between measurement dispatches to I<collectd>, in
+seconds. Since some I<sigrok> supported devices can acquire measurements many
times per second, it may be necessary to throttle these. For example, the
-RRD plugin cannot process writes more than once per second.
+I<RRD plugin> cannot process writes more than once per second.
-The default (and minimum) interval is 1 second. Unused measurements are
-discarded.
+The default B<MinimumInterval> is B<0>, meaning measurements received from the
+device are always dispatched to I<collectd>. When throttled, unused
+measurements are discarded.
=back
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>, I<Gauge> and I<Set> types which
+are dispatched as the I<collectd> types C<derive>, C<latency>, C<gauge> and
+C<objects> 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>
+
+=item B<DeleteSets> 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 and size of sets 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.
+
+=item B<TimerPercentile> I<Percent>
+
+Calculate and dispatch the configured percentile, i.e. compute the latency, so
+that I<Percent> of all reported timers are smaller than or equal to the
+computed latency. This is useful for cutting off the long tail latency, as it's
+often done in I<Service Level Agreements> (SLAs).
+
+If not specified, no percentile is calculated / dispatched.
+
+=back
+
=head2 Plugin C<swap>
The I<Swap plugin> collects information about used and available swap space. On
When enabled, the I<swap I/O> is reported in bytes. When disabled, the default,
I<swap I/O> is reported in pages. This option is available under Linux only.
+=item B<ValuesAbsolute> B<true>|B<false>
+
+Enables or disables reporting of absolute swap metrics, i.e. number of I<bytes>
+available and used. Defaults to B<true>.
+
+=item B<ValuesPercentage> B<false>|B<true>
+
+Enables or disables reporting of relative swap metrics, i.e. I<percent>
+available and free. Defaults to B<false>.
+
+This is useful for deploying I<collectd> in a heterogeneous environment, where
+swap sizes differ and you want to specify generic thresholds or similar.
+
=back
=head2 Plugin C<syslog>
<Plugin "tail">
<File "/var/log/exim4/mainlog">
Instance "exim"
+ Interval 60
<Match>
Regex "S=([1-9][0-9]*)"
DSType "CounterAdd"
next B<Instance> option. This way you can extract several plugin instances from
one logfile, handy when parsing syslog and the like.
+The B<Interval> option allows you to define the length of time between reads. If
+this is not set, the default Interval will be used.
+
Each B<Match> block has the following options to describe how the match should
be performed:
<Node "example">
Host "localhost"
Port "2003"
- Protocol "udp"
+ Protocol "tcp"
LogSendErrors true
Prefix "collectd"
</Node>
TTLFactor 2.0
</Node>
Tag "foobar"
+ Attribute "foo" "bar"
</Plugin>
The following options are understood by the I<write_riemann plugin>:
Add the given string as an additional tag to the metric being sent to
I<Riemann>.
+=item B<Attribute> I<String> I<String>
+
+Consider the two given strings to be the key and value of an additional
+attribute for each metric being sent out to I<Riemann>.
+
=back
=head1 THRESHOLD CONFIGURATION
Here is a configuration example to get you started. Read below for more
information.
- <Threshold>
+ <Plugin threshold>
<Type "foo">
WarningMin 0.00
WarningMax 1000.00
</Type>
</Plugin>
</Host>
- </Threshold>
+ </Plugin>
There are basically two types of configuration statements: The C<Host>,
C<Plugin>, and C<Type> blocks select the value for which a threshold should be
Max 100
Satisfy "All"
</Match>
-
+
# Match if the value of any data source is outside the range of 0 - 100.
<Match "value">
Min 0
<Target "replace">
# Replace "example.net" with "example.com"
Host "\\<example.net\\>" "example.com"
-
+
# Strip "www." from hostnames
Host "\\<www\\." ""
</Target>