1 =head1 NAME
3 collectd.conf - Configuration for the system statistics collection daemon B<collectd>
5 =head1 SYNOPSIS
7 BaseDir "/path/to/data/"
8 PIDFile "/path/to/pidfile/collectd.pid"
9 LogFile "/path/to/logfile/collectd.log"
10 Server "123.123.123.123" 12345
12 LoadPlugin cpu
13 LoadPlugin load
14 LoadPlugin ping
16 <Plugin ping>
17 Host "example.org"
18 Host "provider.net"
19 </Plugin>
21 =head1 DESCRIPTION
23 This config file controls how the system statistics collection daemon
24 B<collectd> behaves. The most significant option is B<LoadPlugin>, which
25 controls which plugins to load. These plugins ultimately define collectd's
26 behavior.
28 The syntax of this config file is similar to the config file of the famos
29 B<Apache Webserver>. Each line containes either a key-value-pair or a
30 section-start or -end. Empty lines and everything after the hash-symbol `#' is
31 ignored. Values are either string, enclosed in double-quotes,
32 (floating-point-)numbers or a boolean extression, i.E<nbsp>e. either B<true> or
33 B<false>. String containing of only alphanumeric characters and underscores do
34 not need to be quoted.
36 =head1 GLOBAL OPTIONS
38 =over 4
40 =item B<BaseDir> I<Directory>
42 Sets the base directory. This is the directory beneath all RRD-files are
43 created. Possibly more subdirectories are created. This is also the working
44 directory for the daemon.
46 =item B<LoadPlugin> I<Plugin>
48 Loads the plugin I<Plugin>. There must be at least one such line or B<collectd>
49 will be mostly useless. The names of the plugins are listed in L<collectd(1)>.
51 =item B<PIDFile> I<File>
53 Sets where to write the PID file to. This file is overwritten when it exists
54 and deleted when the program ist stopped. Some init-scripts might override this
55 setting using the B<-P> commandline option.
57 =item B<LogFile> I<File>
59 Sets the file to write debugging output to. This is only used if compiled with
60 debugging enabled. It's ignored otherwise.
62 =item B<Interval> I<Seconds>
64 Configures the interval in which to query the read plugins. Obviously smaller
65 values lead to a higher system load produces by collectd, while higher values
66 lead to more coarse statistics. Please note that changing this value may render
67 your RRD-files unuseable, if you use the C<rrdtool plugin>. You have been
68 warned.
70 =back
72 =head1 PLUGIN OPTIONS
74 Some Plugins may register own options. These options must be inclosed in a
75 C<Plugin>-Section. Which options exist depends on the plugin used:
77 =head2 Plugin C<apache>
79 To configure the C<apache>-plugin you first need to configure the Apache
80 webserver correctly. The Apache-plugin C<mod_status> needs to be loaded and
81 working and the C<ExtendedStatus> directive needs to be B<enabled>. You can use
82 the following snipped to base your Apache config upon:
84 ExtendedStatus on
85 <IfModule mod_status.c>
86 <Location /mod_status>
87 SetHandler server-status
88 </Location>
89 </IfModule>
91 Since it's C<mod_status> module is very similar to Apache's, B<lighttpd> is
92 also supported. It introduces a new field, called C<BusyServers>, to count the
93 number of currently connected clients. This field is also supported.
95 The following options are accepted by the C<apache>-plugin:
97 =over 4
99 =item B<URL> I<http://host/mod_status?auto>
101 Sets the URL of the C<mod_status> output. This needs to be the output generated
102 by C<ExtendedStatus on> and it needs to be the machine readable output
103 generated by appending the C<?auto> argument.
105 =item B<User> I<Username>
107 Optional user name needed for authentication.
109 =item B<Password> I<Password>
111 Optional password needed for authentication.
113 =item B<CACert> I<File>
115 File that holds one or more SSL certificates. If you want to use HTTPS you will
116 possibly need this option. What CA certificates come bundeled with C<libcurl>
117 and are checked by default depends on the distribution you use.
119 =back
121 =head2 Plugin C<apcups>
123 =over 4
125 =item B<Host> I<Hostname>
127 Hostname of the host running B<apcupsd>. Defaults to B<localhost>. Please note
128 that IPv6 support has been disabled unless someone can confirm or decline that
129 B<apcupsd> can handle it.
131 =item B<Port> I<Port>
133 TCP-Port to connect to. Defaults to B<3551>.
135 =back
137 =head2 Plugin C<csv>
139 =over 4
141 =item B<DataDir> I<Directory>
143 Set the directory to store RRD-files under. Per default RRD-files are generated
144 beneath the daemon's working directory, i.E<nbsp>e. the B<BaseDir>.
146 =back
148 =head2 Plugin C<df>
150 =over 4
152 =item B<Device> I<Device>
154 Select partitions based on the devicename.
156 =item B<MountPoint> I<Directory>
158 Select partitions based on the mountpoint.
160 =item B<FSType> I<FSType>
162 Select partitions based on the filesystem type.
164 =item B<IgnoreSelected> I<true>|I<false>
166 Invert the selection: If set to true, all partitions B<except> the ones that
167 match any one of the criteria are collected. By default only selected
168 partitions are collected if a selection is made. If no selection is conifured
169 at all, B<all> partitions are selected.
171 =back
173 =head2 Plugin C<dns>
175 =over 4
177 =item B<Interface> I<Interface>
179 The dns plugin uses B<libpcap> to capture dns traffic and analyses it. This
180 option sets the interface that should be used. If this option is not set, or
181 set to "any", the plugin will try to get packets from B<all> interfaces. This
182 may not work on certain platforms, such as MacE<nbsp>OSE<nbsp>X.
184 =item B<IgnoreSource> I<IP-address>
186 Ignore packets that originate from this address.
188 =back
190 =head2 Plugin C<email>
192 =over 4
194 =item B<SocketGroup> I<Group>
196 If running as root change the group of the UNIX-socket after it has been
197 created. Defaults to B<collectd>.
199 =item B<SocketPerms> I<Permissions>
201 Change the file permissions of the UNIX-socket after it has been created. The
202 permissions must be given as a numeric, octal value as you would pass to
203 L<chmod(1)>. Defaults to B<0770>.
205 =item B<MaxConns> I<Number>
207 Sets the maximum number of connections that can be handled in parallel. Since
208 this many threads will be started immediately setting this to a very high
209 value will waste valuable resources. Defaults to B<5> and will be forced to be
210 at most B<16384> to prevent typos and dumb mistakes.
212 =back
214 =head2 Plugin C<hddtemp>
216 =over 4
218 =item B<Host> I<Hostname>
220 Hostname to connect to. Defaults to B<127.0.0.1>.
222 =item B<Port> I<Port>
224 TCP-Port to connect to. Defaults to B<7634>.
226 =back
228 =head2 Plugin C<irq>
230 =over 4
232 =item B<Irq> I<Irq>
234 Select this irq. By default these irqs will then be collected. For a more
235 detailed description see B<IgnoreSelected> below.
237 =item B<IgnoreSelected> I<true>|I<false>
239 If no configuration if given, the B<irq>-plugin will collect data from all
240 irqs. This may not be practical, especially if no interrupts happen. Thus, you
241 can use the B<Irq>-option to pick the interupt you're interested in.
242 Sometimes, however, it's easier/prefered to collect all interupts I<except> a
243 few ones. This option enables you to do that: By setting B<IgnoreSelected> to
244 I<true> the effect of B<Irq> is inversed: All selected interupts are ignored
245 and all other interupts are collected.
247 =back
249 =head2 Plugin C<mbmon>
251 =over 4
253 =item B<Host> I<Hostname>
255 Hostname to connect to. Defaults to B<127.0.0.1>.
257 =item B<Port> I<Port>
259 TCP-Port to connect to. Defaults to B<411>.
261 =back
263 =head2 Plugin C<mysql>
265 =over 4
267 =item B<Host> I<Hostname>
269 Hostname of the database server. Defaults to B<localhost>.
271 =item B<User> I<Username>
273 Username to use when connecting to the database.
275 =item B<Password> I<Password>
277 Password needed to log into the database.
279 =item B<Database> I<Database>
281 Select this database. Defaults to I<no database> which is a perfecly reasonable
282 option for what this plugin does.
284 =back
286 =head2 Plugin C<network>
288 =over 4
290 =item B<Listen> I<Host> [I<Port>]
292 =item B<Server> I<Host> [I<Port>]
294 The B<Server> statement sets the server to send datagrams B<to>. The statement
295 may occur multiple times to send each datagram to multiple destinations.
297 The B<Listen> statement sets the interfaces to bind to. When multiple
298 statements are found the daemon will bind to multiple interfaces.
300 The argument I<Host> may be a hostname, an IPv4 address or an IPv6 address. If
301 the argument is a multicast address the daemon will join that multicast group.
303 If no B<Listen> statement is found the server tries join both, the default IPv6
304 multicast group and the default IPv4 multicast group. If no B<Server> statement
305 is found the client will try to send data to the IPv6 multicast group first. If
306 that failes the client will try the IPv4 multicast group.
308 The default IPv6 multicast group is C<ff18::efc0:4a42>. The default IPv4
309 multicast group is C<239.192.74.66>.
311 The optional I<Port> argument sets the port to use. It can either be given
312 using a numeric port number or a service name. If the argument is omited the
313 default port B<25826> is assumed.
315 =item B<TimeToLive> I<1-255>
317 Set the time-to-live of sent packets. This applies to all, unicast and
318 multicast, and IPv4 and IPv6 packets. The default is to not change this value.
319 That means that multicast packets will be sent with a TTL of C<1> (one) on most
320 operating systems.
322 =back
324 =head2 Plugin C<ntpd>
326 =over 4
328 =item B<Host> I<Hostname>
330 Hostname of the host running B<ntpd>. Defaults to B<localhost>.
332 =item B<Port> I<Port>
334 UDP-Port to connect to. Defaults to B<123>.
336 =back
338 =head2 Plugin C<ping>
340 =over 4
342 =item B<Host> I<IP-address>
344 Host to ping periodically. This option may be repeated several times to ping
345 multiple hosts.
347 =item B<TTL> I<0-255>
349 Sets the Time-To-Live of generated ICMP packets.
351 =back
353 =head2 Plugin C<rrdtool>
355 You can use the settings B<StepSize>, B<HeartBeat>, B<RRARows>, and B<XFF> to
356 finetune your RRD-files. Please read L<rrdcreate(1)> if you encounter problems
357 using these settings. If you don't want to dive into the depths of RRDTool, you
358 can savely ignore these settings.
360 =over 4
362 =item B<DataDir> I<Directory>
364 Set the directory to store CSV-files under. Per default CSV-files are generated
365 beneath the daemon's working directory, i.E<nbsp>e. the B<BaseDir>.
367 =item B<StepSize> I<Seconds>
369 Sets the stepsize of newly created RRD-files. Ideally (and per default) this
370 setting is identical to the global B<Interval>-option and should not be
371 smaller. If unsure, don't set this option.
373 =item B<HeartBeat> I<Seconds>
375 Sets the heartbeat of newly created RRD-files. Ideally (and per default) this
376 setting is bigger than the B<Interval>-setting. If unsure, don't set this
377 option.
379 =item B<RRARows> I<NumRows>
381 The C<rrdtool plugin> calculates the number of PDPs per CDP based on the
382 B<StepSize>, this setting and a timespan. This plugin creates RRD-files with
383 three times five RRAs, i. e. five RRAs with the CFs B<MIN>, B<AVERAGE>, and
384 B<MAX>. The five RRAs are optimized for graphs covering one hour, one day, one
385 week, one month, and one year.
387 So for each timespan, it calculates how many PDPs need to be consolidated into
388 one CDP by calculating:
389 number of PDPs = timespan / (stepsize * rrarows)
391 Bottom line is, set this no smaller than the width of you graphs in pixels.
393 =item B<XFF> I<Factor>
395 Set the "XFiles Factor". This is mostly interesting if you set B<StepSize>
396 bigger than B<Interval>. If unsure, don't set this option.
398 =item B<CacheFlush> I<Seconds>
400 When the C<rrdtool plugin> uses a cache (by setting B<CacheTimeout>, see below)
401 it writes all values for a certain RRD-file if the oldest value is older than
402 (or equal to) the number of seconds specified. If some RRD-file is not updated
403 anymore for some reason (the computer was shut down, the network is broken,
404 etc.) some values may still be in the cache. If B<CacheFlush> is set, then the
405 entire cache is searched for entries older than B<CacheTimeout> seconds and
406 written to disk every I<Seconds> seconds. Since this is kind of expensive and
407 does nothing under normal circumstances, this value should not be too small.
408 900 seconds might be a good value, though setting this to 7200 seconds doesn't
409 normally do much harm either.
411 =item B<CacheTimeout> I<Seconds>
413 If this option is set to a value greater than zero, the C<rrdtool plugin> will
414 save values in a cache, as described above. Writing multiple values at once
415 reduces IO-operations and thus lessens the load produced by updating the files.
416 The tradeoff is that the graphs kind of "drag behind" and that more memory is
417 used.
419 =back
421 =head2 Plugin C<sensors>
423 =over 4
425 =item B<Sensor> I<chip-bus-address/type-feature>
427 Selects the name of the sensor which you want to collect or ignore, depending
428 on the B<IgnoreSelected> below. For example, the option "B<Sensor>
429 I<it8712-isa-0290/voltage-in1>" will cause collectd to gather data for the
430 voltage sensor I<in1> of the I<it8712> on the isa bus at the address 0290.
432 =item B<IgnoreSelected> I<true>|I<false>
434 If no configuration if given, the B<sensors>-plugin will collect data from all
435 sensors. This may not be practical, especially for uninteresting sensors.
436 Thus, you can use the B<Sensor>-option to pick the sensors you're interested
437 in. Sometimes, however, it's easier/prefered to collect all sensors I<except> a
438 few ones. This option enables you to do that: By setting B<IgnoreSelected> to
439 I<true> the effect of B<Sensor> is inversed: All selected sensors are ignored
440 and all other sensors are collected.
442 =back
444 =head2 Plugin C<traffic>
446 =over 4
448 =item B<Interface> I<Interface>
450 Select this interface. By default these interfaces will then be collected. For a more detailed description see B<IgnoreSelected> below.
452 =item B<IgnoreSelected> I<true>|I<false>
454 If no configuration if given, the B<traffic>-plugin will collect data from
455 all interfaces. This may not be practical, especially for loopback- and
456 similar interfaces. Thus, you can use the B<Interface>-option to pick the
457 interfaces you're interested in. Sometimes, however, it's easier/prefered
458 to collect all interfaces I<except> a few ones. This option enables you to
459 do that: By setting B<IgnoreSelected> to I<true> the effect of
460 B<Interface> is inversed: All selected interfaces are ignored and all
461 other interfaces are collected.
463 =back
465 =head1 SEE ALSO
467 L<collectd(1)>
469 =head1 AUTHOR
471 Florian Forster E<lt>octo@verplant.orgE<gt>
473 =cut