src/collectd.pod

   1 =head1 NAME
   2
   3 collectd - System statistics collection daemon
   4
   5 =head1 SYNOPSIS
   6
   7 collectd I<[options]>
   8
   9 =head1 DESCRIPTION
  10
  11 collectd is a daemon that collects various system statistics periodically and
  12 stores them into RRD-files. Which data is collected depends on compile-time
  13 settings. The following features may be available:
  14
  15 =over 4
  16
  17 =item
  18
  19 Apache server stats (I<apache>)
  20
  21 =item
  22
  23 Apple hardware sensors (I<apple_sensors>, Darwin only)
  24
  25 =item
  26
  27 Battery status (I<battery>)
  28
  29 =item
  30
  31 CPU utilization (I<cpu>)
  32
  33 =item
  34
  35 Mountpoint usage (I<df>)
  36
  37 =item
  38
  39 Disk and partition usage/throughput (I<disk>)
  40
  41 =item
  42
  43 DNS traffic (I<dns>)
  44
  45 =item
  46
  47 Email usage (I<email>)
  48
  49 =item
  50
  51 Harddisk temperatures (I<hddtemp>)
  52
  53 =item
  54
  55 Irq (I<irq>)
  56
  57 =item
  58
  59 System load averages (I<load>)
  60
  61 =item
  62
  63 Motherboard monitor (I<mbmon>)
  64
  65 =item
  66
  67 Memory usage (I<memory>)
  68
  69 =item
  70
  71 MySQL statistics (I<mysql>)
  72
  73 =item
  74
  75 NFS utilization (I<nfs>, Linux only)
  76
  77 =item
  78
  79 Network latency (I<ping>)
  80
  81 =item
  82
  83 Number of processes (I<processes>, Linux only)
  84
  85 =item
  86
  87 lm_sensors information (I<sensors>, Linux only)
  88
  89 =item
  90
  91 Serial port traffic (I<serial>, Linux only)
  92
  93 =item
  94
  95 Swap usage (I<swap>)
  96
  97 =item
  98
  99 Tape drive usage (I<tape>, Solaris only)
 100
 101 =item
 102
 103 Network traffic (I<traffic>)
 104
 105 =item
 106
 107 Number of users logged into the system (I<users>)
 108
 109 =item
 110
 111 System ressources used by VServers (I<vserver>)
 112
 113 =item
 114
 115 Wireless network stats (I<wireless>)
 116
 117 =back
 118
 119 =head1 OPTIONS
 120
 121 =over 4
 122
 123 =item B<-C> I<E<lt>config-fileE<gt>>
 124
 125 Specify an alternative config file. This is the place to go when you wish to
 126 change B<collectd>'s behavior. The path may be relative to the current working
 127 directory.
 128
 129 =item B<-P> I<E<lt>pid-fileE<gt>>
 130
 131 Specify an alternative pid file. This overwrites any settings in the config
 132 file. This is thought for init-scripts that require the PID-file in a certain
 133 directory to work correctly. For everyday-usage use the B<PIDFile>
 134 config-option.
 135
 136 =item B<-f>
 137
 138 Don't fork to the background. I<collectd> will also B<not> close standard file
 139 descriptors, detach from the session nor write a pid file. This is mainly
 140 thought for 'supervisioning' init replacements such as I<runit>.
 141
 142 =item B<-h>
 143
 144 Output usage information and exit.
 145
 146 =back
 147
 148 =head1 MODES
 149
 150 collectd can operate in four different operating modes. The modes are described
 151 below.
 152
 153 The simplest mode is the so called B<local mode>. Data is collected locally and
 154 written in RRD files that reside in I<DataDir>. This is the default mode when
 155 collectd is linked against C<librrd>.
 156
 157 The modes B<client mode> and B<server mode> are used to send data over a
 158 network and receive it again.
 159
 160 In B<client mode> the daemon collects the data locally and sends its results
 161 to one or more network addresses. No RRD files are written locally in this
 162 case. If collectd is not linked against C<librrd> this is the default mode.
 163
 164 If started in B<server mode> the daemon will listen on one or more interfaces
 165 and write the data it receives to RRD files. No data is collected locally.
 166
 167 In the last mode, B<log mode>, data is collected locally and written in
 168 text files that reside in I<DataDir>.
 169
 170 Please refer to L<collectd.conf(5)> for the configuration options and default
 171 values.
 172
 173 =head1 SPECIAL PLUGINS
 174
 175 =head2 apache
 176
 177 This module connects to an Apache webserver and expects the output produced by
 178 B<mod_status.c>. If requires B<libcurl> to set up the HTTP connection and issue
 179 the request(s). The following is a sample config for the Apache webserver. The
 180 use of C<ExtendedStatus on> is mandatory.
 181
 182   ExtendedStatus on
 183   <IfModule mod_status.c>
 184     <Location /mod_status>
 185       SetHandler server-status
 186     </Location>
 187   </IfModule>
 188
 189 This plugin requires further configuration. Please read L<collectd.conf(5)>.
 190
 191 =head2 cpufreq
 192
 193 This module reads F</sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq> (for
 194 the first CPU installed) to get the current CPU frequency. If this file does
 195 not exist make sure B<cpufreqd> (L<http://cpufreqd.sourceforge.net/>) or a
 196 similar tool is installed and an "cpu governor" (that's kernel module) is
 197 loaded.
 198
 199 =head2 email
 200
 201 This plugin collects data indirectly by providing a UNIX socket that external
 202 programs can connect to. A simple line based protocol is used to communicate
 203 with the plugin:
 204
 205 E-Mail type (e.g. "ham", "spam", "virus", ...) and size (bytes):
 206
 207   e:<type>:<size>
 208
 209 If C<size> is less than or equal to zero, C<size> is ignored.
 210
 211 Spam score:
 212
 213   s:<value>
 214
 215 Successful spam checks (e.g. "BAYES_99", "SUBJECT_DRUG_GAP_C", ...):
 216
 217   c:<type1>[,<type2>,...]
 218
 219 Each line is limited to 256 characters (including the newline character).
 220 Longer lines will be ignored.
 221
 222 =head2 mysql
 223
 224 Requires B<mysqlclient> to be installed. It connects to the database when
 225 started and keeps the connection up as long as possible. When the connection is
 226 interrupted for whatever reason it will try to re-connect. The syslog will
 227 contain loud complaints in case anything goes wrong.
 228
 229 This plugin issues C<SHOW STATUS> and evaluates C<Bytes_{received,sent}>,
 230 C<Com_*> and C<Handler_*> which correspond to F<traffic-mysql.rrd>,
 231 F<mysql_commands-*.rrd> and F<mysql_handler-*.rrd>. Also, the values of
 232 C<Qcache_*> are put in F<mysql_qcache.rrd> and values of C<Threads_*> are put
 233 in F<mysql_threads.rrd>. Please refer to the B<MySQL reference manual>,
 234 I<5.2.4. Server Status Variables> for an explanation of these values.
 235
 236 =head2 sensors
 237
 238 The B<sensors> module uses lm_sensors to retrieve sensor-values. This means
 239 that all the needed modules have to be loaded and lm_sensors has to be
 240 configured (most likely by editing F</etc/sensors.conf>. Read
 241 L<sensors.conf(5)> for details.
 242
 243 The B<lm_sensors> homepage can be found at
 244 L<http://secure.netroedge.com/~lm78/>.
 245
 246 =head2 mbmon
 247
 248 The B<mbmon> module uses mbmon to retrieve temperature, voltage, etc.
 249
 250 collectd connects to B<localhost> (127.0.0.1), port B<411/tcp>.
 251 The B<Host> and B<Port> options can be used to change these
 252 default values. See L<collectd.conf(5)> for details. C<mbmon> has to be
 253 running to work correctly. If C<mbmon> is not running timeouts may appear
 254 which may interfere with other statistics..
 255
 256 C<mbmon> must be run with the -r option ("print TAG and Value format");
 257 Debian's /etc/init.d/mbmon script already does this, other people
 258 will need to ensure that this is the case.
 259
 260 =head2 hddtemp
 261
 262 To get values from B<hddtemp> collectd connects to B<localhost> (127.0.0.1),
 263 port B<7634/tcp>. The B<Host> and B<Port> options can be used to change these
 264 default values. See L<collectd.conf(5)> for details. C<hddtemp> has to be
 265 running to work correctly. If C<hddtemp> is not running timeouts may appear
 266 which may interfere with other statistics..
 267
 268 The B<hddtemp> homepage can be found at
 269 L<http://www.guzu.net/linux/hddtemp.php>.
 270
 271 =head2 irq
 272
 273 The B<irq> modules uses F</proc/interrupts> to retrieve interrupts per second.
 274 If there is more than one CPU all counters are added for each interrupt.
 275
 276 =head2 vserver
 277
 278 B<VServer> support is only available for Linux. It cannot yet be found in a
 279 vanilla kernel, though. To make use of this plugin you need a kernel that has
 280 B<VServer> support built in, i.e. you need to apply the patches and compile
 281 your own kernel, which will then provide the /proc/virtual filesystem that is
 282 required by this plugin.
 283
 284 The B<VServer> homepage can be found at L<http://linux-vserver.org/>.
 285
 286 =head1 RRD FILES
 287
 288 The RRD files are created automatically. The size of the RRAs depend on the
 289 compile time settings of I<step> and I<width>. With the default values (I<step>
 290 = B<10>, I<width> = B<1200>) the following RRAs are created:
 291
 292   RRA:AVERAGE:0.1:1:8640
 293   RRA:AVERAGE:0.1:50:1210
 294   RRA:AVERAGE:0.1:223:1202
 295   RRA:AVERAGE:0.1:2635:1201
 296   RRA:MIN:0.1:1:8640
 297   RRA:MIN:0.1:50:1210
 298   RRA:MIN:0.1:223:1202
 299   RRA:MIN:0.1:2635:1201
 300   RRA:MAX:0.1:1:8640
 301   RRA:MAX:0.1:50:1210
 302   RRA:MAX:0.1:223:1202
 303   RRA:MAX:0.1:2635:1201
 304
 305 By default collectd uses a 10 second I<step>. Thus the RRAs contain the
 306 following timespans. If you've changed the I<step> at compile time you will
 307 have calculate resolution and timespan yourself.
 308
 309   PDP per CDP |  Resolution  | Data points | Timespan
 310   ------------+--------------+-------------+---------
 311             1 | 10.0 seconds !        8640 ! 1 day
 312            50 |  8.3 minutes |        1210 | 1 week
 313           223 | 37.2 minutes |        1202 | 1 month
 314          2635 |  7.3 hours   |        1201 | 1 year
 315
 316 The DS'es depend on the module creating the RRD files:
 317
 318 =over 4
 319
 320 =item Apache traffic (F<apache/apache_bytes.rrd>)
 321
 322   DS:count:COUNTER:HEARTBEAT:0:134217728
 323
 324 =item Apache requests (F<apache/apache_requests.rrd>)
 325
 326   DS:count:COUNTER:HEARTBEAT:0:1048576
 327
 328 =item Apache scoreboard (F<apache/apache_scoreboard-I<E<lt>nameE<gt>>.rrd>)
 329
 330   DS:count:GAUGE:HEARTBEAT:0:U
 331
 332 =item Apple temperature sensor (F<apple_sensors/temperature-I<E<lt>nameE<gt>>.rrd>)
 333
 334   DS:value:GAUGE:HEARTBEAT:U:U
 335
 336 =item Apple fanspeed sensor (F<apple_sensors/fanspeed-I<E<lt>nameE<gt>>.rrd>)
 337
 338   DS:value:GAUGE:HEARTBEAT:U:U
 339
 340 =item Battery charge (F<battery-I<E<lt>nameE<gt>>/charge.rrd>)
 341
 342   DS:charge:GAUGE:HEARTBEAT:0:U
 343
 344 =item Battery current (F<battery-I<E<lt>nameE<gt>>/current.rrd>)
 345
 346   DS:current:GAUGE:HEARTBEAT:U:U
 347
 348 =item Battery voltage (F<battery-I<E<lt>nameE<gt>>/voltage.rrd>)
 349
 350   DS:voltage:GAUGE:HEARTBEAT:U:U
 351
 352 =item CPU (F<cpu-I<E<lt>numE<gt>>.rrd>)
 353
 354   DS:user:COUNTER:HEARTBEAT:0:100
 355   DS:nice:COUNTER:HEARTBEAT:0:100
 356   DS:syst:COUNTER:HEARTBEAT:0:100
 357   DS:idle:COUNTER:HEARTBEAT:0:100
 358   DS:wait:COUNTER:HEARTBEAT:0:100
 359
 360 =item CPU frequency (F<cpufreq-I<E<lt>numE<gt>>.rrd>)
 361
 362   DS:value:GAUGE:HEARTBEAT:0:U
 363
 364 =item Mountpoints (F<df-I<E<lt>pathE<gt>>.rrd>)
 365
 366   DS:used:GAUGE:HEARTBEAT:0:U
 367   DS:free:GAUGE:HEARTBEAT:0:U
 368
 369 =item Diskstats (F<disk-I<E<lt>majorE<gt>>-I<E<lt>minorE<gt>>.rrd>)
 370
 371   DS:rcount:COUNTER:HEARTBEAT:0:U
 372   DS:rmerged:COUNTER:HEARTBEAT:0:U
 373   DS:rbytes:COUNTER:HEARTBEAT:0:U
 374   DS:rtime:COUNTER:HEARTBEAT:0:U
 375   DS:wcount:COUNTER:HEARTBEAT:0:U
 376   DS:wmerged:COUNTER:HEARTBEAT:0:U
 377   DS:wbytes:COUNTER:HEARTBEAT:0:U
 378   DS:wtime:COUNTER:HEARTBEAT:0:U
 379
 380 =item Diskstats (F<partition-I<E<lt>majorE<gt>>-I<E<lt>minorE<gt>>.rrd>)
 381
 382   DS:rcount:COUNTER:HEARTBEAT:0:U
 383   DS:rbytes:COUNTER:HEARTBEAT:0:U
 384   DS:wcount:COUNTER:HEARTBEAT:0:U
 385   DS:wbytes:COUNTER:HEARTBEAT:0:U
 386
 387 =item E-Mail count (F<email/email-I<E<lt>typeE<gt>>.rrd>)
 388
 389   DS:count:GAUGE:HEARTBEAT:0:U
 390
 391 =item E-Mail size (F<email/email_size-I<E<lt>typeE<gt>>.rrd>)
 392
 393   DS:size:GAUGE:HEARTBEAT:0:U
 394
 395 =item HDD Temperature (F<hddtemp-I<E<lt>majorE<gt>>-I<E<lt>minorE<gt>>.rrd>)
 396
 397   DS:value:GAUGE:HEARTBEAT:U:U
 398
 399 =item Irq (F<irq-I<E<lt>irqnumberE<gt>>-I<E<lt>descriptionE<gt>>.rrd>)
 400
 401   DS:value:COUNTER:HEARTBEAT:U:U
 402
 403 =item System load (F<load.rrd>)
 404
 405   DS:shortterm:GAUGE:HEARTBEAT:0:100
 406   DS:midterm:GAUGE:HEARTBEAT:0:100
 407   DS:longterm:GAUGE:HEARTBEAT:0:100
 408
 409 =item Memory usage (F<memory.rrd>)
 410
 411   DS:used:GAUGE:HEARTBEAT:0:9223372036854775807
 412   DS:free:GAUGE:HEARTBEAT:0:9223372036854775807
 413   DS:buffers:GAUGE:HEARTBEAT:0:9223372036854775807
 414   DS:cached:GAUGE:HEARTBEAT:0:9223372036854775807
 415
 416 =item MySQL commands and handlers (F<mysql_commands-I<E<lt>commandE<gt>>.rrd> and F<mysql_handler-I<E<lt>handlerE<gt>>.rrd>)
 417
 418   DS:value:COUNTER:HEARTBEAT:0:U
 419
 420 =item MySQL query cache (F<mysql_qcache.rrd>)
 421
 422   DS:hits:COUNTER:HEARTBEAT:0:U
 423   DS:inserts:COUNTER:HEARTBEAT:0:U
 424   DS:not_cached:COUNTER:HEARTBEAT:0:U
 425   DS:lowmem_prunes:COUNTER:HEARTBEAT:0:U
 426   DS:queries_in_cache:GAUGE:HEARTBEAT:0:U
 427
 428 =item MySQL threads (F<mysql_threads.rrd>)
 429
 430   DS:running:GAUGE:HEARTBEAT:0:U
 431   DS:connected:GAUGE:HEARTBEAT:0:U
 432   DS:cached:GAUGE:HEARTBEAT:0:U
 433   DS:created:COUNTER:HEARTBEAT:0:U
 434
 435 =item NFSv2 Procedures (F<nfs2_procedures-I<(client|server)>.rrd>)
 436
 437   DS:null:COUNTER:HEARTBEAT:0:U
 438   DS:getattr:COUNTER:HEARTBEAT:0:U
 439   DS:setattr:COUNTER:HEARTBEAT:0:U
 440   DS:root:COUNTER:HEARTBEAT:0:U
 441   DS:lookup:COUNTER:HEARTBEAT:0:U
 442   DS:readlink:COUNTER:HEARTBEAT:0:U
 443   DS:read:COUNTER:HEARTBEAT:0:U
 444   DS:wrcache:COUNTER:HEARTBEAT:0:U
 445   DS:write:COUNTER:HEARTBEAT:0:U
 446   DS:create:COUNTER:HEARTBEAT:0:U
 447   DS:remove:COUNTER:HEARTBEAT:0:U
 448   DS:rename:COUNTER:HEARTBEAT:0:U
 449   DS:link:COUNTER:HEARTBEAT:0:U
 450   DS:symlink:COUNTER:HEARTBEAT:0:U
 451   DS:mkdir:COUNTER:HEARTBEAT:0:U
 452   DS:rmdir:COUNTER:HEARTBEAT:0:U
 453   DS:readdir:COUNTER:HEARTBEAT:0:U
 454   DS:fsstat:COUNTER:HEARTBEAT:0:U
 455
 456 =item NFSv3 Procedures (F<nfs3_procedures-I<(client|server)>.rrd>)
 457
 458   DS:null:COUNTER:HEARTBEAT:0:U
 459   DS:getattr:COUNTER:HEARTBEAT:0:U
 460   DS:setattr:COUNTER:HEARTBEAT:0:U
 461   DS:lookup:COUNTER:HEARTBEAT:0:U
 462   DS:access:COUNTER:HEARTBEAT:0:U
 463   DS:readlink:COUNTER:HEARTBEAT:0:U
 464   DS:read:COUNTER:HEARTBEAT:0:U
 465   DS:write:COUNTER:HEARTBEAT:0:U
 466   DS:create:COUNTER:HEARTBEAT:0:U
 467   DS:mkdir:COUNTER:HEARTBEAT:0:U
 468   DS:symlink:COUNTER:HEARTBEAT:0:U
 469   DS:mknod:COUNTER:HEARTBEAT:0:U
 470   DS:remove:COUNTER:HEARTBEAT:0:U
 471   DS:rmdir:COUNTER:HEARTBEAT:0:U
 472   DS:rename:COUNTER:HEARTBEAT:0:U
 473   DS:link:COUNTER:HEARTBEAT:0:U
 474   DS:readdir:COUNTER:HEARTBEAT:0:U
 475   DS:readdirplus:COUNTER:HEARTBEAT:0:U
 476   DS:fsstat:COUNTER:HEARTBEAT:0:U
 477   DS:fsinfo:COUNTER:HEARTBEAT:0:U
 478   DS:pathconf:COUNTER:HEARTBEAT:0:U
 479   DS:commit:COUNTER:HEARTBEAT:0:U
 480
 481 =item Network latency / Ping (F<ping-I<E<lt>hostnameE<gt>>.rrd>)
 482
 483   DS:ping:GAUGE:HEARTBEAT:0:65535
 484
 485 =item Processes (F<processes.rrd>)
 486
 487   DS:running:GAUGE:HEARTBEAT:0:65535
 488   DS:sleeping:GAUGE:HEARTBEAT:0:65535
 489   DS:zombies:GAUGE:HEARTBEAT:0:65535
 490   DS:stopped:GAUGE:HEARTBEAT:0:65535
 491   DS:paging:GAUGE:HEARTBEAT:0:65535
 492   DS:blocked:GAUGE:HEARTBEAT:0:65535
 493
 494 =item lm_sensors fanspeed sensor (F<sensors-I<E<lt>instE<gt>>.rrd> or F<lm_sensors-I<E<lt>chipE<gt>>/fanspeed-I<E<lt>instE<gt>>.rrd>)
 495
 496   DS:value:GAUGE:HEARTBEAT:U:U
 497
 498 =item lm_sensors temperature sensor (F<sensors-I<E<lt>instE<gt>>.rrd> or F<lm_sensors-I<E<lt>chipE<gt>>/temperature-I<E<lt>instE<gt>>.rrd>)
 499
 500   DS:value:GAUGE:HEARTBEAT:U:U
 501
 502 =item lm_sensors voltage sensor (F<sensors-I<E<lt>instE<gt>>.rrd> or F<lm_sensors-I<E<lt>chipE<gt>>/voltage-I<E<lt>instE<gt>>.rrd>)
 503
 504   DS:voltage:GAUGE:HEARTBEAT:U:U
 505
 506 =item Serial port traffic (F<serial-I<E<lt>numE<gt>>.rrd>)
 507
 508   DS:incoming:COUNTER:HEARTBEAT:0:U
 509   DS:outgoing:COUNTER:HEARTBEAT:0:U
 510
 511 =item Spam score (F<email/spam_score.rrd>)
 512
 513   DS:score:GAUGE:HEARTBEAT:0:U
 514
 515 =item Spam checks (F<email/spam_check-I<E<lt>typeE<gt>>.rrd>)
 516
 517   DS:hits:GAUGE:HEARTBEAT:0:U
 518
 519 =item Swap usage (F<swap.rrd>)
 520
 521   DS:used:GAUGE:HEARTBEAT:0:1099511627776
 522   DS:free:GAUGE:HEARTBEAT:0:1099511627776
 523   DS:cached:GAUGE:HEARTBEAT:0:1099511627776
 524   DS:resv:GAUGE:HEARTBEAT:0:1099511627776
 525
 526 =item Tape drive usage (F<tape-I<E<lt>nameE<gt>>.rrd>)
 527
 528   DS:rcount:COUNTER:HEARTBEAT:0:
 529   DS:rmerged:COUNTER:HEARTBEAT:0:U
 530   DS:rbytes:COUNTER:HEARTBEAT:0:U
 531   DS:rtime:COUNTER:HEARTBEAT:0:U
 532   DS:wcount:COUNTER:HEARTBEAT:0:U
 533   DS:wmerged:COUNTER:HEARTBEAT:0:U
 534   DS:wbytes:COUNTER:HEARTBEAT:0:U
 535   DS:wtime:COUNTER:HEARTBEAT:0:U
 536
 537 =item Network traffic (F<traffic-I<E<lt>interfaceE<gt>>.rrd>)
 538
 539   DS:incoming:COUNTER:HEARTBEAT:0:U
 540   DS:outgoing:COUNTER:HEARTBEAT:0:U
 541
 542 =item Interface packets (F<if_packets-I<E<lt>interfaceE<gt>>.rrd>)
 543
 544   DS:rx:COUNTER:HEARTBEAT:0:U
 545   DS:tx:COUNTER:HEARTBEAT:0:U
 546
 547 =item Interface errors (F<if_errors-I<E<lt>interfaceE<gt>>.rrd>)
 548
 549   DS:rx:COUNTER:HEARTBEAT:0:U
 550   DS:tx:COUNTER:HEARTBEAT:0:U
 551
 552 =item Users (F<users.rrd>)
 553
 554   DS:users:GAUGE:HEARTBEAT:0:65535
 555
 556 =item VServer load (F<vserver-I<E<lt>xidE<gt>>/load.rrd>)
 557
 558   DS:shortterm:GAUGE:HEARTBEAT:0:100
 559   DS:midterm:GAUGE:HEARTBEAT:0:100
 560   DS:longterm:GAUGE:HEARTBEAT:0:100
 561
 562 =item VServer threads (F<vserver-I<E<lt>xidE<gt>>/threads.rrd>)
 563
 564   DS:total:GAUGE:HEARTBEAT:0:65535
 565   DS:running:GAUGE:HEARTBEAT:0:65535
 566   DS:uninterruptible:GAUGE:HEARTBEAT:0:65535
 567   DS:onhold:GAUGE:HEARTBEAT:0:65535
 568
 569 =item VServer network traffic (F<vserver-I<E<lt>xidE<gt>>/traffic-I<E<lt>nameE<gt>>.rrd>)
 570
 571   DS:incoming:COUNTER:HEARTBEAT:0:9223372036854775807
 572   DS:outgoing:COUNTER:HEARTBEAT:0:9223372036854775807
 573   DS:failed:COUNTER:HEARTBEAT:0:9223372036854775807
 574
 575 =item VServer processes (F<vserver-I<E<lt>xidE<gt>>/vs_processes.rrd>)
 576
 577   DS:total:GAUGE:HEARTBEAT:0:65535
 578
 579 =item VServer memory usage (F<vserver-I<E<lt>xidE<gt>>/vs_memory.rrd>)
 580
 581   DS:vm:GAUGE:HEARTBEAT:0:9223372036854775807
 582   DS:vml:GAUGE:HEARTBEAT:0:9223372036854775807
 583   DS:rss:GAUGE:HEARTBEAT:0:9223372036854775807
 584   DS:anon:GAUGE:HEARTBEAT:0:9223372036854775807
 585
 586 =item Wireless link quality (F<wireless-I<E<lt>interfaceE<gt>>.rrd>)
 587
 588   DS:quality:GAUGE:HEARTBEAT:0:U
 589   DS:power:GAUGE:HEARTBEAT:U:0
 590   DS:noise:GAUGE:HEARTBEAT:U:0
 591
 592 =back
 593
 594 =head1 SEE ALSO
 595
 596 L<collectd.conf(5)>, L<rrdtool(1)>, L<sensors(1)>, L<hddtemp(8)>,
 597 L<mbmon(1)>,
 598 L<kstat(3KSTAT)>
 599
 600 =head1 AUTHOR
 601
 602 Florian Forster E<lt>octo@verplant.orgE<gt>
 603
 604 =cut