=over 4
-=item
+=item *
The I<Type> cannot be left unspecified, because it is not reasonable to add
apples to oranges. Also, the internal lookup structure won't work if you try
to group by type.
-=item
+=item *
There must be at least one unspecified, ungrouped field. Otherwise nothing
will be aggregated.
=over 4
-=item
+=item *
foo.example.com/cpu-even-average/cpu-idle
-=item
+=item *
foo.example.com/cpu-even-average/cpu-system
-=item
+=item *
foo.example.com/cpu-even-average/cpu-user
-=item
+=item *
...
=back
+=head2 Plugin C<chrony>
+
+The C<chrony> plugin collects ntp data from a B<chronyd> server, such as clock
+skew and per-peer stratum.
+
+For talking to B<chronyd>, it mimics what the B<chronyc> control program does
+on the wire.
+
+Available configuration options for the C<chrony> plugin:
+
+=over 4
+
+=item B<Host> I<Hostname>
+
+Hostname of the host running B<chronyd>. Defaults to B<localhost>.
+
+=item B<Port> I<Port>
+
+UDP-Port to connect to. Defaults to B<323>.
+
+=item B<Timeout> I<Timeout>
+
+Connection timeout in seconds. Defaults to B<2>.
+
+=back
+
=head2 Plugin C<conntrack>
This plugin collects IP conntrack statistics.
=over 4
-=item
+=item *
Sum, per-state, over all CPUs installed in the system; and
-=item
+=item *
Sum, per-CPU, over all non-idle states of a CPU, creating an "active" state.
sure B<cpufreqd> (L<http://cpufreqd.sourceforge.net/>) or a similar tool is
installed and an "cpu governor" (that's a kernel module) is loaded.
+=head2 Plugin C<cpusleep>
+
+This plugin doesn't have any options. It reads CLOCK_BOOTTIME and
+CLOCK_MONOTONIC and reports the differences between these
+clocks. Since BOOTTIME clock increments while device is suspended and
+MONOTONIC clock does not, the derivative of the difference between
+these clocks gives the relative amount of time the device has spent in
+suspend state. The recorded value is in milliseconds / seconds.
+
=head2 Plugin C<csv>
=over 4
=back
+=head2 cURL Statistics
+
+All cURL-based plugins support collection of generic, request-based
+statistics. These are disabled by default and can be enabled selectively for
+each page or URL queried from the curl, curl_json, or curl_xml plugins. See
+the documentation of those plugins for specific information. This section
+describes the available metrics that can be configured for each plugin. All
+options are disabled by default.
+
+See L<http://curl.haxx.se/libcurl/c/curl_easy_getinfo.html> for more details.
+
+=over 4
+
+=item B<TotalTime> B<true|false>
+
+Total time of the transfer, including name resolving, TCP connect, etc.
+
+=item B<NamelookupTime> B<true|false>
+
+Time it took from the start until name resolving was completed.
+
+=item B<ConnectTime> B<true|false>
+
+Time it took from the start until the connect to the remote host (or proxy)
+was completed.
+
+=item B<AppconnectTime> B<true|false>
+
+Time it took from the start until the SSL/SSH connect/handshake to the remote
+host was completed.
+
+=item B<PretransferTime> B<true|false>
+
+Time it took from the start until just before the transfer begins.
+
+=item B<StarttransferTime> B<true|false>
+
+Time it took from the start until the first byte was received.
+
+=item B<RedirectTime> B<true|false>
+
+Time it took for all redirection steps include name lookup, connect,
+pre-transfer and transfer before final transaction was started.
+
+=item B<RedirectCount> B<true|false>
+
+The total number of redirections that were actually followed.
+
+=item B<SizeUpload> B<true|false>
+
+The total amount of bytes that were uploaded.
+
+=item B<SizeDownload> B<true|false>
+
+The total amount of bytes that were downloaded.
+
+=item B<SpeedDownload> B<true|false>
+
+The average download speed that curl measured for the complete download.
+
+=item B<SpeedUpload> B<true|false>
+
+The average upload speed that curl measured for the complete upload.
+
+=item B<HeaderSize> B<true|false>
+
+The total size of all the headers received.
+
+=item B<RequestSize> B<true|false>
+
+The total size of the issued requests.
+
+=item B<ContentLengthDownload> B<true|false>
+
+The content-length of the download.
+
+=item B<ContentLengthUpload> B<true|false>
+
+The specified size of the upload.
+
+=item B<NumConnects> B<true|false>
+
+The number of new connections that were created to achieve the transfer.
+
+=back
+
=head2 Plugin C<curl>
The curl plugin uses the B<libcurl> (L<http://curl.haxx.se/>) to read web pages
B<Timeout> accordingly if you expect B<MeasureResponseTime> to report such slow
requests.
+This option is similar to enabling the B<TotalTime> statistic but it's
+measured by collectd instead of cURL.
+
=item B<MeasureResponseCode> B<true>|B<false>
Measure response code for the request. If this setting is enabled, B<Match>
blocks (see below) are optional. Disabled by default.
+=item B<E<lt>StatisticsE<gt>>
+
+One B<Statistics> block can be used to specify cURL statistics to be collected
+for each request to the remote web site. See the section "cURL Statistics"
+above for details. If this setting is enabled, B<Match> blocks (see below) are
+optional.
+
=item B<E<lt>MatchE<gt>>
One or more B<Match> blocks that define how to match information in the data
These options behave exactly equivalent to the appropriate options of the
I<cURL> plugin. Please see there for a detailed description.
+=item B<E<lt>StatisticsE<gt>>
+
+One B<Statistics> block can be used to specify cURL statistics to be collected
+for each request to the remote URL. See the section "cURL Statistics" above
+for details.
+
=back
The following options are valid within B<Key> blocks:
These options behave exactly equivalent to the appropriate options of the
I<cURL plugin>. Please see there for a detailed description.
+=item B<E<lt>StatisticsE<gt>>
+
+One B<Statistics> block can be used to specify cURL statistics to be collected
+for each request to the remote URL. See the section "cURL Statistics" above
+for details.
+
=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
=head2 Plugin C<grpc>
The I<grpc> plugin provides an RPC interface to submit values to or query
-values from collectd based on the open source gRPC framework. It exposes and
+values from collectd based on the open source gRPC framework. It exposes an
end-point for dispatching values to the daemon.
The B<gRPC> homepage can be found at L<https://grpc.io/>.
=item B<Listen> I<Host> I<Port>
The B<Listen> statement sets the network address to bind to. When multiple
-statements are specified, the daemon will bin to all of them. If none are
+statements are specified, the daemon will bind to all of them. If none are
specified, it defaults to B<0.0.0.0:50051>.
The argument I<Host> may be a hostname, an IPv4 address, or an IPv6 address.
+Optionally, B<Listen> may be specified as a configuration block which
+supports the following options:
+
+=over 4
+
+=item B<EnableSSL> I<true>|I<false>
+
+Whether to enable SSL for incoming connections. Default: false.
+
+=item B<SSLRootCerts> I<Filename>
+
+=item B<SSLServerKey> I<Filename>
+
+=item B<SSLServerCert> I<Filename>
+
+Filenames specifying SSL certificate and key material to be used with SSL
+connections.
+
+=back
+
+=item B<WorkerThreads> I<Num>
+
+Number of threads to start for handling incoming connections. The default
+value is B<5>.
+
=back
=head2 Plugin C<hddtemp>
=head2 Plugin C<ntpd>
-The C<ntpd> plugin collects per-peer ntpd data such as time offset and time
+The C<ntpd> plugin collects per-peer ntp data such as time offset and time
dispersion.
For talking to B<ntpd>, it mimics what the B<ntpdc> control program does on
-wire - using B<mode 7> specific requests. This mode is deprecated with
+the wire - using B<mode 7> specific requests. This mode is deprecated with
newer B<ntpd> releases (4.2.7p230 and later). For the C<ntpd> plugin to work
correctly with them, the ntp daemon must be explicitly configured to
enable B<mode 7> (which is disabled by default). Refer to the I<ntp.conf(5)>
set to B<false>, B<only> matching disks will be collected. If B<IgnoreSelected>
is set to B<true>, all disks are collected B<except> the ones matched.
+=item B<IgnoreSleepMode> B<true>|B<false>
+
+Normally, the C<smart> plugin will ignore disks that are reported to be asleep.
+This option disables the sleep mode check and allows the plugin to collect data
+from these disks anyway. This is useful in cases where libatasmart mistakenly
+reports disks as asleep because it has not been updated to incorporate support
+for newer idle states in the ATA spec.
+
+=item B<UseSerial> B<true>|B<false>
+
+A disk's kernel name (e.g., sda) can change from one boot to the next. If this
+option is enabled, the C<smart> plugin will use the disk's serial number (e.g.,
+HGST_HUH728080ALE600_2EJ8VH8X) instead of the kernel name as the key for
+storing data. This ensures that the data for a given disk will be kept together
+even if the kernel name changes.
+
=back
=head2 Plugin C<snmp>
=over 4
-=item
+=item *
Check I</etc/uuid> (or I<UUIDFile>).
-=item
+=item *
Check for UUID from HAL (L<http://www.freedesktop.org/wiki/Software/hal>) if
present.
-=item
+=item *
Check for UUID from C<dmidecode> / SMBIOS.
-=item
+=item *
Check for UUID from Xen hypervisor.
projects / collectd.git / blobdiff