=item B<Hostname> I<Name>
Sets the hostname that identifies a host. If you omit this setting, the
-hostname will be determinded using the L<gethostname(2)> system call.
+hostname will be determined using the L<gethostname(2)> system call.
=item B<FQDNLookup> B<true|false>
and the match infrastructure (the same code used by the tail plugin) to use
regular expressions with the received data.
-The following example will read the current value of AMD stock from google's
+The following example will read the current value of AMD stock from Google's
finance page and dispatch the value to collectd.
<Plugin curl>
=item B<MeasureResponseTime> B<true>|B<false>
-Measure response time for the request. Disabled by default.
+Measure response time for the request. If this setting is enabled, B<Match>
+blocks (see below) are optional. Disabled by default.
=item B<E<lt>MatchE<gt>>
One or more B<Match> blocks that define how to match information in the data
returned by C<libcurl>. The C<curl> plugin uses the same infrastructure that's
used by the C<tail> plugin, so please see the documentation of the C<tail>
-plugin below on how matches are defined.
+plugin below on how matches are defined. If the B<MeasureResponseTime> option
+is set to B<true>, B<Match> blocks are optional.
=back
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, of which is used to collect
-a value from a JSON map object. If a B<Key> path element is that of a I<*> wildcard,
-the values for all keys will be collectd.
+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.
The following options are valid within B<URL> blocks:
=back
+=head2 Plugin C<curl_xml>
+
+The B<curl_xml plugin> uses B<libcurl> (L<http://curl.haxx.se/>) and B<libxml2>
+(L<http://xmlsoft.org/>) to retrieve XML data via cURL.
+
+ <Plugin "curl_xml">
+ <URL "http://localhost/stats.xml">
+ Host "my_host"
+ Instance "some_instance"
+ User "collectd"
+ Password "thaiNg0I"
+ VerifyPeer true
+ VerifyHost true
+ CACert "/path/to/ca.crt"
+
+ <XPath "table[@id=\"magic_level\"]/tr">
+ Type "magic_level"
+ #InstancePrefix "prefix-"
+ InstanceFrom "td[1]"
+ ValuesFrom "td[2]/span[@class=\"level\"]"
+ </XPath>
+ </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). Within each B<URL> block there are
+options which specify the connection parameters, for example authentication
+information, and one or more B<XPath> blocks.
+
+Each B<XPath> block specifies how to get one type of information. The
+string argument must be a valid XPath expression which returns a list
+of "base elements". One value is dispatched for each "base element". The
+I<type instance> and values are looked up using further I<XPath> expressions
+that should be relative to the base element.
+
+Within the B<URL> block the following options are accepted:
+
+=over 4
+
+=item B<Host> I<Name>
+
+Use I<Name> as the host name when submitting values. Defaults to the global
+host name setting.
+
+=item B<Instance> I<Instance>
+
+Use I<Instance> as the plugin instance when submitting values. Defaults to an
+empty string (no plugin instance).
+
+=item B<User> I<User>
+=item B<Password> I<Password>
+=item B<VerifyPeer> B<true>|B<false>
+=item B<VerifyHost> B<true>|B<false>
+=item B<CACert> I<CA Cert File>
+
+These options behave exactly equivalent to the appropriate options of the
+I<cURL> and I<cURL-JSON> plugins. Please see there for a detailed description.
+
+=item E<lt>B<XPath> I<XPath-expression>E<gt>
+
+Within each B<URL> block, there must be one or more B<XPath> blocks. Each
+B<XPath> block specifies how to get one type of information. The string
+argument must be a valid XPath expression which returns a list of "base
+elements". One value is dispatched for each "base element".
+
+Within the B<XPath> block the following options are accepted:
+
+=over 4
+
+=item B<Type> I<Type>
+
+Specifies the I<Type> used for submitting patches. This determines the number
+of values that are required / expected and whether the strings are parsed as
+signed or unsigned integer or as double values. See L<types.db(5)> for details.
+This option is required.
+
+=item B<InstancePrefix> I<InstancePrefix>
+
+Prefix the I<type instance> with I<InstancePrefix>. The values are simply
+concatenated together without any separator.
+This option is optional.
+
+=item B<InstanceFrom> I<InstanceFrom>
+
+Specifies a XPath expression to use for determining the I<type instance>. The
+XPath expression must return exactly one element. The element's value is then
+used as I<type instance>, possibly prefixed with I<InstancePrefix> (see above).
+
+This value is required. As a special exception, if the "base XPath expression"
+(the argument to the B<XPath> block) returns exactly one argument, then this
+option may be omitted.
+
+=item B<ValuesFrom> I<ValuesFrom> [I<ValuesFrom> ...]
+
+Specifies one or more XPath expression to use for reading the values. The
+number of XPath expressions must match the number of data sources in the
+I<type> specified with B<Type> (see above). Each XPath expression must return
+exactly one element. The element's value is then parsed as a number and used as
+value for the appropriate value in the value list dispatched to the daemon.
+
+=back
+
+=back
+
=head2 Plugin C<dbi>
This plugin uses the B<dbi> library (L<http://libdbi.sourceforge.net/>) to
Query blocks define I<SQL> statements and how the returned data should be
interpreted. They are identified by the name that is given in the opening line
of the block. Thus the name needs to be unique. Other than that, the name is
-not used in collectd.
+not used in collectd.
In each B<Query> block, there is one or more B<Result> blocks. B<Result> blocks
define which column holds which value or instance information. You can use
different syntax. The plugin will use only those queries, where the specified
minimum and maximum versions fit the version of the database in use.
-The database version is determined by C<dbi_conn_get_engine_version>, see the
+The database version is determined by C<dbi_conn_get_engine_version>, see the
L<libdbi documentation|http://libdbi.sourceforge.net/docs/programmers-guide/reference-conn.html#DBI-CONN-GET-ENGINE-VERSION>
for details. Basically, each part of the version is assumed to be in the range
from B<00> to B<99> and all dots are removed. So version "4.1.2" becomes
=item B<Interface> I<Interface>
-The dns plugin uses B<libpcap> to capture dns traffic and analyses it. This
+The dns plugin uses B<libpcap> to capture dns traffic and analyzes it. This
option sets the interface that should be used. If this option is not set, or
set to "any", the plugin will try to get packets from B<all> interfaces. This
may not work on certain platforms, such as MacE<nbsp>OSE<nbsp>X.
Controls whether or not to recurse into subdirectories. Enabled by default.
+=item B<IncludeHidden> I<true>|I<false>
+
+Controls whether or not to include "hidden" files and directories in the count.
+"Hidden" files and directories are those, whose name begins with a dot.
+Defaults to I<false>, i.e. by default hidden files and directories are ignored.
+
=back
=head2 Plugin C<GenericJMX>
Prefix all lines printed by the current time. Defaults to B<true>.
+=item B<PrintSeverity> B<true>|B<false>
+
+When enabled, all lines are prefixed by the severity of the log message, for
+example "warning". Defaults to B<false>.
+
=back
B<Note>: There is no need to notify the daemon after moving or removing the
=back
+=head2 Plugin C<modbus>
+
+The B<modbus plugin> connects to a Modbus "slave" via Modbus/TCP and reads
+register values. It supports reading single registers (unsigned 16E<nbsp>bit
+values), large integer values (unsigned 32E<nbsp>bit values) and floating point
+values (two registers interpreted as IEEE floats in big endian notation).
+
+Synopsis:
+
+ <Data "voltage-input-1">
+ RegisterBase 0
+ RegisterType float
+ 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"
+ Collect "voltage-input-2"
+ </Slave>
+ </Host>
+
+=over 4
+
+=item E<lt>B<Data> I<Name>E<gt> blocks
+
+Data blocks define a mapping between register numbers and the "types" used by
+I<collectd>.
+
+Within E<lt>DataE<nbsp>/E<gt> blocks, the following options are allowed:
+
+=over 4
+
+=item B<RegisterBase> I<Number>
+
+Configures the base register to read from the device. If the option
+B<RegisterType> has been set to B<Uint32> or B<Float>, this and the next
+register will be read (the register number is increased by one).
+
+=item B<RegisterType> B<Uint16>|B<Uint32>|B<Float>
+
+Specifies what kind of data is returned by the device. If the type is B<Uint32>
+or B<Float>, two 16E<nbsp>bit registers will be read and the data is combined
+into one value. Defaults to B<Uint16>.
+
+=item B<Type> I<Type>
+
+Specifies the "type" (data set) to use when dispatching the value to
+I<collectd>. Currently, only data sets with exactly one data source are
+supported.
+
+=item B<Instance> I<Instance>
+
+Sets the type instance to use when dispatching the value to I<collectd>. If
+unset, an empty string (no type instance) is used.
+
+=back
+
+=item E<lt>B<Host> I<Name>E<gt> blocks
+
+Host blocks are used to specify to which hosts to connect and what data to read
+from their "slaves". The string argument I<Name> is used as hostname when
+dispatching the values to I<collectd>.
+
+Within E<lt>HostE<nbsp>/E<gt> blocks, the following options are allowed:
+
+=over 4
+
+=item B<Address> I<Hostname>
+
+Specifies the node name (the actual network address) used to connect to the
+host. This may be an IP address or a hostname. Please note that the used
+I<libmodbus> library only supports IPv4 at the moment.
+
+=item B<Port> I<Service>
+
+Specifies the port used to connect to the host. The port can either be given as
+a number or as a service name. Please note that the I<Service> argument must be
+a string, even if ports are given in their numerical form. Defaults to "502".
+
+=item B<Interval> I<Interval>
+
+Sets the interval (in seconds) in which the values will be collected from this
+host. By default the global B<Interval> setting will be used.
+
+=item E<lt>B<Slave> I<ID>E<gt>
+
+Over each TCP connection, multiple Modbus devices may be reached. The slave ID
+is used to specify which device should be addressed. For each device you want
+to query, one B<Slave> block must be given.
+
+Within E<lt>SlaveE<nbsp>/E<gt> blocks, the following options are allowed:
+
+=over 4
+
+=item B<Instance> I<Instance>
+
+Specify the plugin instance to use when dispatching the values to I<collectd>.
+By default "slave_I<ID>" is used.
+
+=item B<Collect> I<DataName>
+
+Specifies which data to retrieve from the device. I<DataName> must be the same
+string as the I<Name> argument passed to a B<Data> block. You can specify this
+option multiple times to collect more than one value from a slave. At least one
+B<Collect> option is mandatory.
+
+=back
+
+=back
+
+=back
+
=head2 Plugin C<mysql>
The C<mysql plugin> requires B<mysqlclient> to be installed. It connects to
=head2 Plugin C<netapp>
-The netapp plugin can collect various performance and capacity informations
+The netapp plugin can collect various performance and capacity information
from a NetApp filer using the NetApp API.
+Please note that NetApp has a wide line of products and a lot of different
+software versions for each of these products. This plugin was developed for a
+NetApp FAS3040 running OnTap 7.2.3P8 and tested on FAS2050 7.3.1.1L1,
+FAS3140 7.2.5.1 and FAS3020 7.2.4P9. It I<should> work for most combinations of
+model and software version but it is very hard to test this.
+If you have used this plugin with other models and/or software version, feel
+free to send us a mail to tell us about the results, even if it's just a short
+"It works".
+
To collect these data collectd will log in to the NetApp via HTTP(S) and HTTP
basic authentication.
=item B<IgnoreSelected>
-The behaviour is the same as with all other similar plugins: If nothing is
+The behavior is the same as with all other similar plugins: If nothing is
selected at all, everything is collected. If some things are selected using the
options described above, only these statistics are collected. If you set
B<IgnoreSelected> to B<true>, this behavior is inverted, i.E<nbsp>e. the
The Network plugin sends data to a remote instance of collectd, receives data
from a remote instance, or both at the same time. Data which has been received
-from the network is usually not transmitted again, but this can be actived, see
+from the network is usually not transmitted again, but this can be activated, see
the B<Forward> option below.
The default IPv6 multicast group is C<ff18::efc0:4a42>. The default IPv4
That means that multicast packets will be sent with a TTL of C<1> (one) on most
operating systems.
+=item B<Interface> I<Interface name>
+
+Set the outgoing or incoming interface for IP packets. This applies at least
+to IPv6 packets and if possible to IPv4. If this option is not applicable,
+undefined or a non-existent interface name is specified, the default
+behaviour is to let the kernel choose the appropriate interface. Be warned
+that the manual selection of an interface for unicast traffic is only
+necessary in rare cases.
+
=item B<MaxPacketSize> I<1024-65535>
Set the maximum size for datagrams received over the network. Packets larger
=item B<ReverseLookups> B<true>|B<false>
-Sets wether or not to perform reverse lookups on peers. Since the name or
+Sets whether or not to perform reverse lookups on peers. Since the name or
IP-address may be used in a filename it is recommended to disable reverse
lookups. The default is to do reverse lookups to preserve backwards
compatibility, though.
Specifies the location of the status file.
+=item B<ImprovedNamingSchema> B<true>|B<false>
+
+When enabled, the filename of the status file will be used as plugin instance
+and the client's "common name" will be used as type instance. This is required
+when reading multiple status files. Enabling this option is recommended, but to
+maintain backwards compatibility this option is disabled by default.
+
+=item B<CollectCompression> B<true>|B<false>
+
+Sets whether or not statistics about the compression used by OpenVPN should be
+collected. This information is only available in I<single> mode. Enabled by
+default.
+
+=item B<CollectIndividualUsers> B<true>|B<false>
+
+Sets whether or not traffic information is collected for each connected client
+individually. If set to false, currently no traffic data is collected at all
+because aggregating this data in a save manner is tricky. Defaults to B<true>.
+
+=item B<CollectUserCount> B<true>|B<false>
+
+When enabled, the number of currently connected clients or users is collected.
+This is expecially interesting when B<CollectIndividualUsers> is disabled, but
+can be configured independently from that option. Defaults to B<false>.
+
=back
=head2 Plugin C<oracle>
Sets the Time-To-Live of generated ICMP packets.
+=item B<SourceAddress> I<host>
+
+Sets the source address to use. I<host> may either be a numerical network
+address or a network hostname.
+
+=item B<Device> I<name>
+
+Sets the outgoing network device to be used. I<name> has to specify an
+interface name (e.E<nbsp>g. C<eth0>). This might not be supported by all
+operating systems.
+
+=item B<MaxMissed> I<Packets>
+
+Trigger a DNS resolv after the host has not replied to I<Packets> packets. This
+enables the use of dynamic DNS services (like dyndns.org) with the ping plugin.
+
+Default: B<-1> (disabled)
+
=back
=head2 Plugin C<postgresql>
</Database>
<Database bar>
+ Interval 300
Service "service_name"
Query backend # predefined
Query rt36_tickets
=item I<interval>
-The interval collectd is using (as specified by the B<Interval> option).
+The interval with which this database is queried (as specified by the database
+specific or global B<Interval> options).
=back
=over 4
+=item B<Interval> I<seconds>
+
+Specify the interval with which the database should be queried. The default is
+to use the global B<Interval> setting.
+
=item B<Host> I<hostname>
Specify the hostname or IP of the PostgreSQL server to connect to. If the
=back
+=head2 Plugin C<python>
+
+This plugin embeds a Python-interpreter into collectd and provides an interface
+to collectd's plugin system. See L<collectd-python(5)> for its documentation.
+
=head2 Plugin C<routeros>
The C<routeros> plugin connects to a device running I<RouterOS>, the
User "collectd"
Password "secr3t"
CollectInterface true
+ CollectCPULoad true
+ CollectMemory true
</Router>
<Router>
Host "router1.example.com"
Password "5ecret"
CollectInterface true
CollectRegistrationTable true
+ CollectDF true
+ CollectDisk true
</Router>
</Plugin>
When set to B<true>, information about wireless LAN connections will be
collected. Defaults to B<false>.
+=item B<CollectCPULoad> B<true>|B<false>
+
+When set to B<true>, information about the CPU usage will be collected. The
+number is a dimensionless value where zero indicates no CPU usage at all.
+Defaults to B<false>.
+
+=item B<CollectMemory> B<true>|B<false>
+
+When enabled, the amount of used and free memory will be collected. How used
+memory is calculated is unknown, for example whether or not caches are counted
+as used space.
+Defaults to B<false>.
+
+=item B<CollectDF> B<true>|B<false>
+
+When enabled, the amount of used and free disk space will be collected.
+Defaults to B<false>.
+
+=item B<CollectDisk> B<true>|B<false>
+
+When enabled, the number of sectors written and bad blocks will be collected.
+Defaults to B<false>.
+
=back
=head2 Plugin C<rrdcached>
</Match>
<Match>
Regex "\\<R=local_user\\>"
+ ExcludeRegex "\\<R=local_user\\>.*mail_spool defer"
DSType "CounterInc"
Type "counter"
Instance "local_user"
Regex "SPAM \\(Score: (-?[0-9]+\\.[0-9]+)\\)"
+=item B<ExcludeRegex> I<regex>
+
+Sets an optional regular expression to use for excluding lines from the match.
+An example which excludes all connections from localhost from the match:
+
+ ExcludeRegex "127\\.0\\.0\\.1"
+
=item B<DSType> I<Type>
Sets how the values are cumulated. I<Type> is one of:
=head2 Plugin C<tokyotyrant>
-The C<tokyotyrant plugin> connects to a TokyoTyrant server and collects a
+The C<tokyotyrant plugin> connects to a TokyoTyrant server and collects a
couple metrics: number of records, and database size on disk.
=over 4
Defaults to B<Command>.
+=item B<StoreRates> B<true|false>
+
+If set to B<true>, convert counter values to rates. If set to B<false> (the
+default) counter values are stored as is, i.E<nbsp>e. as an increasing integer
+number.
+
=back
=head1 THRESHOLD CONFIGURATION
=back
-=head2 Built-in targets
+=head2 Built-in targets
The following targets are built into the core daemon and therefore need no
plugins to be loaded:
the identifier of a value. If multiple regular expressions are given, B<all>
regexen must match for a value to match.
+=item B<Invert> B<false>|B<true>
+
+When set to B<true>, the result of the match is inverted, i.e. all value lists
+where all regular expressions apply are not matched, all other value lists are
+matched. Defaults to B<false>.
+
=back
Example:
projects / collectd.git / blobdiff