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 The following options are accepted by the C<apache>-plugin:
93 =over 4
95 =item B<URL> I<http://host/mod_status?auto>
97 Sets the URL of the C<mod_status> output. This needs to be the output generated
98 by C<ExtendedStatus on> and it needs to be the machine readable output
99 generated by appending the C<?auto> argument.
101 =item B<User> I<Username>
103 Optional user name needed for authentication.
105 =item B<Password> I<Password>
107 Optional password needed for authentication.
109 =item B<CACert> I<File>
111 File that holds one or more SSL certificates. If you want to use HTTPS you will
112 possibly need this option. What CA certificates come bundeled with C<libcurl>
113 and are checked by default depends on the distribution you use.
115 =back
117 =head2 Plugin C<apcups>
119 =over 4
121 =item B<Host> I<Hostname>
123 Hostname of the host running B<apcupsd>. Defaults to B<localhost>. Please note
124 that IPv6 support has been disabled unless someone can confirm or decline that
125 B<apcupsd> can handle it.
127 =item B<Port> I<Port>
129 TCP-Port to connect to. Defaults to B<3551>.
131 =back
133 =head2 Plugin C<csv>
135 =over 4
137 =item B<DataDir> I<Directory>
139 Set the directory to store RRD-files under. Per default RRD-files are generated
140 beneath the daemon's working directory, i.E<nbsp>e. the B<BaseDir>.
142 =back
144 =head2 Plugin C<df>
146 =over 4
148 =item B<Device> I<Device>
150 Select partitions based on the devicename.
152 =item B<MountPoint> I<Directory>
154 Select partitions based on the mountpoint.
156 =item B<FSType> I<FSType>
158 Select partitions based on the filesystem type.
160 =item B<IgnoreSelected> I<true>|I<false>
162 Invert the selection: If set to true, all partitions B<except> the ones that
163 match any one of the criteria are collected. By default only selected
164 partitions are collected if a selection is made. If no selection is conifured
165 at all, B<all> partitions are selected.
167 =back
169 =head2 Plugin C<dns>
171 =over 4
173 =item B<Interface> I<Interface>
175 The dns plugin uses B<libpcap> to capture dns traffic and analyses it. This
176 option sets the interface that should be used. If this option is not set, or
177 set to "any", the plugin will try to get packets from B<all> interfaces. This
178 may not work on certain platforms, such as MacE<nbsp>OSE<nbsp>X.
180 =item B<IgnoreSource> I<IP-address>
182 Ignore packets that originate from this address.
184 =back
186 =head2 Plugin C<email>
188 =over 4
190 =item B<SocketGroup> I<Group>
192 If running as root change the group of the UNIX-socket after it has been
193 created. Defaults to B<collectd>.
195 =item B<SocketPerms> I<Permissions>
197 Change the file permissions of the UNIX-socket after it has been created. The
198 permissions must be given as a numeric, octal value as you would pass to
199 L<chmod(1)>. Defaults to B<0770>.
201 =item B<MaxConns> I<Number>
203 Sets the maximum number of connections that can be handled in parallel. Since
204 this many threads will be started immediately setting this to a very high
205 value will waste valuable resources. Defaults to B<5> and will be forced to be
206 at most B<16384> to prevent typos and dumb mistakes.
208 =back
210 =head2 Plugin C<hddtemp>
212 =over 4
214 =item B<Host> I<Hostname>
216 Hostname to connect to. Defaults to B<127.0.0.1>.
218 =item B<Port> I<Port>
220 TCP-Port to connect to. Defaults to B<7634>.
222 =back
224 =head2 Plugin C<irq>
226 =over 4
228 =item B<Irq> I<Irq>
230 Select this irq. By default these irqs will then be collected. For a more
231 detailed description see B<IgnoreSelected> below.
233 =item B<IgnoreSelected> I<true>|I<false>
235 If no configuration if given, the B<irq>-plugin will collect data from all
236 irqs. This may not be practical, especially if no interrupts happen. Thus, you
237 can use the B<Irq>-option to pick the interupt you're interested in.
238 Sometimes, however, it's easier/prefered to collect all interupts I<except> a
239 few ones. This option enables you to do that: By setting B<IgnoreSelected> to
240 I<true> the effect of B<Irq> is inversed: All selected interupts are ignored
241 and all other interupts are collected.
243 =back
245 =head2 Plugin C<mbmon>
247 =over 4
249 =item B<Host> I<Hostname>
251 Hostname to connect to. Defaults to B<127.0.0.1>.
253 =item B<Port> I<Port>
255 TCP-Port to connect to. Defaults to B<411>.
257 =back
259 =head2 Plugin C<mysql>
261 =over 4
263 =item B<Host> I<Hostname>
265 Hostname of the database server. Defaults to B<localhost>.
267 =item B<User> I<Username>
269 Username to use when connecting to the database.
271 =item B<Password> I<Password>
273 Password needed to log into the database.
275 =item B<Database> I<Database>
277 Select this database. Defaults to I<no database> which is a perfecly reasonable
278 option for what this plugin does.
280 =back
282 =head2 Plugin C<network>
284 =over 4
286 =item B<Listen> I<Host> [I<Port>]
288 =item B<Server> I<Host> [I<Port>]
290 The B<Server> statement sets the server to send datagrams B<to>. The statement
291 may occur multiple times to send each datagram to multiple destinations.
293 The B<Listen> statement sets the interfaces to bind to. When multiple
294 statements are found the daemon will bind to multiple interfaces.
296 The argument I<Host> may be a hostname, an IPv4 address or an IPv6 address. If
297 the argument is a multicast address the daemon will join that multicast group.
299 If no B<Listen> statement is found the server tries join both, the default IPv6
300 multicast group and the default IPv4 multicast group. If no B<Server> statement
301 is found the client will try to send data to the IPv6 multicast group first. If
302 that failes the client will try the IPv4 multicast group.
304 The default IPv6 multicast group is C<ff18::efc0:4a42>. The default IPv4
305 multicast group is C<239.192.74.66>.
307 The optional I<Port> argument sets the port to use. It can either be given
308 using a numeric port number or a service name. If the argument is omited the
309 default port B<25826> is assumed.
311 =item B<TimeToLive> I<1-255>
313 Set the time-to-live of sent packets. This applies to all, unicast and
314 multicast, and IPv4 and IPv6 packets. The default is to not change this value.
315 That means that multicast packets will be sent with a TTL of C<1> (one) on most
316 operating systems.
318 =back
320 =head2 Plugin C<ntpd>
322 =over 4
324 =item B<Host> I<Hostname>
326 Hostname of the host running B<ntpd>. Defaults to B<localhost>.
328 =item B<Port> I<Port>
330 UDP-Port to connect to. Defaults to B<123>.
332 =back
334 =head2 Plugin C<ping>
336 =over 4
338 =item B<Host> I<IP-address>
340 Host to ping periodically. This option may be repeated several times to ping
341 multiple hosts.
343 =item B<TTL> I<0-255>
345 Sets the Time-To-Live of generated ICMP packets.
347 =back
349 =head2 Plugin C<rrdtool>
351 You can use the settings B<StepSize>, B<HeartBeat>, B<RRARows>, and B<XFF> to
352 finetune your RRD-files. Please read L<rrdcreate(1)> if you encounter problems
353 using these settings. If you don't want to dive into the depths of RRDTool, you
354 can savely ignore these settings.
356 =over 4
358 =item B<DataDir> I<Directory>
360 Set the directory to store CSV-files under. Per default CSV-files are generated
361 beneath the daemon's working directory, i.E<nbsp>e. the B<BaseDir>.
363 =item B<StepSize> I<Seconds>
365 Sets the stepsize of newly created RRD-files. Ideally (and per default) this
366 setting is identical to the global B<Interval>-option and should not be
367 smaller. If unsure, don't set this option.
369 =item B<HeartBeat> I<Seconds>
371 Sets the heartbeat of newly created RRD-files. Ideally (and per default) this
372 setting is bigger than the B<Interval>-setting. If unsure, don't set this
373 option.
375 =item B<RRARows> I<NumRows>
377 The C<rrdtool plugin> calculates the number of PDPs per CDP based on the
378 B<StepSize>, this setting and a timespan. This plugin creates RRD-files with
379 three times five RRAs, i. e. five RRAs with the CFs B<MIN>, B<AVERAGE>, and
380 B<MAX>. The five RRAs are optimized for graphs covering one hour, one day, one
381 week, one month, and one year.
383 So for each timespan, it calculates how many PDPs need to be consolidated into
384 one CDP by calculating:
385 number of PDPs = timespan / (stepsize * rrarows)
387 Bottom line is, set this no smaller than the width of you graphs in pixels.
389 =item B<XFF> I<Factor>
391 Set the "XFiles Factor". This is mostly interesting if you set B<StepSize>
392 bigger than B<Interval>. If unsure, don't set this option.
394 =item B<CacheFlush> I<Seconds>
396 When the C<rrdtool plugin> uses a cache (by setting B<CacheTimeout>, see below)
397 it writes all values for a certain RRD-file if the oldest value is older than
398 (or equal to) the number of seconds specified. If some RRD-file is not updated
399 anymore for some reason (the computer was shut down, the network is broken,
400 etc.) some values may still be in the cache. If B<CacheFlush> is set, then the
401 entire cache is searched for entries older than B<CacheTimeout> seconds and
402 written to disk every I<Seconds> seconds. Since this is kind of expensive and
403 does nothing under normal circumstances, this value should not be too small.
404 900 seconds might be a good value, though setting this to 7200 seconds doesn't
405 normally do much harm either.
407 =item B<CacheTimeout> I<Seconds>
409 If this option is set to a value greater than zero, the C<rrdtool plugin> will
410 save values in a cache, as described above. Writing multiple values at once
411 reduces IO-operations and thus lessens the load produced by updating the files.
412 The tradeoff is that the graphs kind of "drag behind" and that more memory is
413 used.
415 =back
417 =head2 Plugin C<sensors>
419 =over 4
421 =item B<Sensor> I<chip-bus-address/type-feature>
423 Selects the name of the sensor which you want to collect or ignore, depending
424 on the B<IgnoreSelected> below. For example, the option "B<Sensor>
425 I<it8712-isa-0290/voltage-in1>" will cause collectd to gather data for the
426 voltage sensor I<in1> of the I<it8712> on the isa bus at the address 0290.
428 =item B<IgnoreSelected> I<true>|I<false>
430 If no configuration if given, the B<sensors>-plugin will collect data from all
431 sensors. This may not be practical, especially for uninteresting sensors.
432 Thus, you can use the B<Sensor>-option to pick the sensors you're interested
433 in. Sometimes, however, it's easier/prefered to collect all sensors I<except> a
434 few ones. This option enables you to do that: By setting B<IgnoreSelected> to
435 I<true> the effect of B<Sensor> is inversed: All selected sensors are ignored
436 and all other sensors are collected.
438 =back
440 =head2 Plugin C<traffic>
442 =over 4
444 =item B<Interface> I<Interface>
446 Select this interface. By default these interfaces will then be collected. For a more detailed description see B<IgnoreSelected> below.
448 =item B<IgnoreSelected> I<true>|I<false>
450 If no configuration if given, the B<traffic>-plugin will collect data from
451 all interfaces. This may not be practical, especially for loopback- and
452 similar interfaces. Thus, you can use the B<Interface>-option to pick the
453 interfaces you're interested in. Sometimes, however, it's easier/prefered
454 to collect all interfaces I<except> a few ones. This option enables you to
455 do that: By setting B<IgnoreSelected> to I<true> the effect of
456 B<Interface> is inversed: All selected interfaces are ignored and all
457 other interfaces are collected.
459 =back
461 =head1 SEE ALSO
463 L<collectd(1)>
465 =head1 AUTHOR
467 Florian Forster E<lt>octo@verplant.orgE<gt>
469 =cut