X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=src%2Fcollectd.conf.pod;h=b47fdc1d2b6d97f00a8831b045f18040c47ad9a3;hb=d561a8387f633491bdcd7fe6964f0b63ae694af5;hp=86fcf296c5b26bf5d732a17bf65864a4309297e5;hpb=0c7a16efd4921637d986f590c3e584de4be6d4bd;p=collectd.git diff --git a/src/collectd.conf.pod b/src/collectd.conf.pod index 86fcf296..b47fdc1d 100644 --- a/src/collectd.conf.pod +++ b/src/collectd.conf.pod @@ -4,42 +4,44 @@ collectd.conf - Configuration for the system statistics collection daemon B - Host example.org - Host provider.net + Host "example.org" + Host "provider.net" =head1 DESCRIPTION This config file controls how the system statistics collection daemon -B behaves. The most significant options are B, which controlls -if the daemon will act as client, server or will be independent in local mode, -and B which controls which plugins to load. +B behaves. The most significant option is B, which +controls which plugins to load. These plugins ultimately define collectd's +behavior. The syntax of this config file is similar to the config file of the famos B. Each line containes either a key-value-pair or a section-start or -end. Empty lines and everything after the hash-symbol `#' is -ignored. +ignored. Values are either string, enclosed in double-quotes, +(floating-point-)numbers or a boolean extression, i.Ee. either B or +B. String containing of only alphanumeric characters and underscores do +not need to be quoted. =head1 GLOBAL OPTIONS =over 4 -=item B (B|B|B|B) +=item B I -Sets the operating mode. See the section B in L for a -description. This option determines which other options are allowed. Defaults -to B. +Sets the base directory. This is the directory beneath all RRD-files are +created. Possibly more subdirectories are created. This is also the working +directory for the daemon. =item B I @@ -50,52 +52,20 @@ will be mostly useless. The names of the plugins are listed in L. Sets where to write the PID file to. This file is overwritten when it exists and deleted when the program ist stopped. Some init-scripts might override this -setting using the B<-P> commandline option. Available in B. - -=item B I - -Sets the data directory. This is the directory beneath all RRD-files are -created. Possibly more subdirectories are created. This is also the working -directory for the daemon. Available in B, though the B mode -won't write to this directory. +setting using the B<-P> commandline option. =item B I Sets the file to write debugging output to. This is only used if compiled with -debugging enabled. It's ignored otherwise. Available in B. - -=item B I [I] - -=item B I [I] - -In B the B statement sets the server to send datagrams to. -The statement may occur multiple times to send each datagram to multiple -destinations. - -In B the B statement sets the interfaces to bind to. When -multiple statements are found the daemon will bind to multiple interfaces. - -The argument I may be a hostname, an IPv4 address or an IPv6 address. If -the argument is a multicast address the daemon will join that multicast group. - -If no B statement is found the server tries join both, the IPv6 -multicast group and the IPv4 multicast group. If no B statement is -found the client will try to send data to the IPv6 multicast group first. If -that failes the client will try the IPv4 multicast group. - -The default IPv6 multicast group is C. The default IPv4 -multicast group is C<239.192.74.66>. +debugging enabled. It's ignored otherwise. -The optional I argument sets the port to use. It can either be given -using a numeric port number or a service name. If the argument is omited the -default port B<25826> is assumed. - -=item B I<1-255> +=item B I -Set the time-to-live of sent packets. This applies to all, unicast and -multicast, and IPv4 and IPv6 packets. The default is to not change this value. -That means that multicast packets will be sent with a TTL of C<1> (one) on most -operating systems. +Configures the interval in which to query the read plugins. Obviously smaller +values lead to a higher system load produces by collectd, while higher values +lead to more coarse statistics. Please note that changing this value may render +your RRD-files unuseable, if you use the C. You have been +warned. =back @@ -118,6 +88,10 @@ the following snipped to base your Apache config upon: +Since it's C module is very similar to Apache's, B is +also supported. It introduces a new field, called C, to count the +number of currently connected clients. This field is also supported. + The following options are accepted by the C-plugin: =over 4 @@ -160,6 +134,83 @@ TCP-Port to connect to. Defaults to B<3551>. =back +=head2 Plugin C + +=over 4 + +=item B I + +Set the directory to store RRD-files under. Per default RRD-files are generated +beneath the daemon's working directory, i.Ee. the B. + +=back + +=head2 Plugin C + +=over 4 + +=item B I + +Select partitions based on the devicename. + +=item B I + +Select partitions based on the mountpoint. + +=item B I + +Select partitions based on the filesystem type. + +=item B I|I + +Invert the selection: If set to true, all partitions B the ones that +match any one of the criteria are collected. By default only selected +partitions are collected if a selection is made. If no selection is conifured +at all, B partitions are selected. + +=back + +=head2 Plugin C + +=over 4 + +=item B I + +The dns plugin uses B to capture dns traffic and analyses 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 interfaces. This +may not work on certain platforms, such as MacEOSEX. + +=item B I + +Ignore packets that originate from this address. + +=back + +=head2 Plugin C + +=over 4 + +=item B I + +If running as root change the group of the UNIX-socket after it has been +created. Defaults to B. + +=item B I + +Change the file permissions of the UNIX-socket after it has been created. The +permissions must be given as a numeric, octal value as you would pass to +L. Defaults to B<0770>. + +=item B I + +Sets the maximum number of connections that can be handled in parallel. Since +this many threads will be started immediately setting this to a very high +value will waste valuable resources. Defaults to B<5> and will be forced to be +at most B<16384> to prevent typos and dumb mistakes. + +=back + =head2 Plugin C =over 4 @@ -174,17 +225,38 @@ TCP-Port to connect to. Defaults to B<7634>. =back -=head2 Plugin C +=head2 Plugin C + +=over 4 + +=item B I + +Select this irq. By default these irqs will then be collected. For a more +detailed description see B below. + +=item B I|I + +If no configuration if given, the B-plugin will collect data from all +irqs. This may not be practical, especially if no interrupts happen. Thus, you +can use the B-option to pick the interupt you're interested in. +Sometimes, however, it's easier/prefered to collect all interupts I a +few ones. This option enables you to do that: By setting B to +I the effect of B is inversed: All selected interupts are ignored +and all other interupts are collected. + +=back + +=head2 Plugin C =over 4 =item B I -Hostname of the host running B. Defaults to B. +Hostname to connect to. Defaults to B<127.0.0.1>. =item B I -UDP-Port to connect to. Defaults to B<123>. +TCP-Port to connect to. Defaults to B<411>. =back @@ -211,6 +283,58 @@ option for what this plugin does. =back +=head2 Plugin C + +=over 4 + +=item B I [I] + +=item B I [I] + +The B statement sets the server to send datagrams B. The statement +may occur multiple times to send each datagram to multiple destinations. + +The B statement sets the interfaces to bind to. When multiple +statements are found the daemon will bind to multiple interfaces. + +The argument I may be a hostname, an IPv4 address or an IPv6 address. If +the argument is a multicast address the daemon will join that multicast group. + +If no B statement is found the server tries join both, the default IPv6 +multicast group and the default IPv4 multicast group. If no B statement +is found the client will try to send data to the IPv6 multicast group first. If +that failes the client will try the IPv4 multicast group. + +The default IPv6 multicast group is C. The default IPv4 +multicast group is C<239.192.74.66>. + +The optional I argument sets the port to use. It can either be given +using a numeric port number or a service name. If the argument is omited the +default port B<25826> is assumed. + +=item B I<1-255> + +Set the time-to-live of sent packets. This applies to all, unicast and +multicast, and IPv4 and IPv6 packets. The default is to not change this value. +That means that multicast packets will be sent with a TTL of C<1> (one) on most +operating systems. + +=back + +=head2 Plugin C + +=over 4 + +=item B I + +Hostname of the host running B. Defaults to B. + +=item B I + +UDP-Port to connect to. Defaults to B<123>. + +=back + =head2 Plugin C =over 4 @@ -226,65 +350,96 @@ Sets the Time-To-Live of generated ICMP packets. =back -=head2 Plugin C +=head2 Plugin C + +You can use the settings B, B, B, and B to +finetune your RRD-files. Please read L if you encounter problems +using these settings. If you don't want to dive into the depths of RRDTool, you +can savely ignore these settings. =over 4 -=item B I|I +=item B I + +Set the directory to store CSV-files under. Per default CSV-files are generated +beneath the daemon's working directory, i.Ee. the B. + +=item B I + +Sets the stepsize of newly created RRD-files. Ideally (and per default) this +setting is identical to the global B-option and should not be +smaller. If unsure, don't set this option. + +=item B I + +Sets the heartbeat of newly created RRD-files. Ideally (and per default) this +setting is bigger than the B-setting. If unsure, don't set this +option. + +=item B I + +The C calculates the number of PDPs per CDP based on the +B, this setting and a timespan. This plugin creates RRD-files with +three times five RRAs, i. e. five RRAs with the CFs B, B, and +B. The five RRAs are optimized for graphs covering one hour, one day, one +week, one month, and one year. -If set to I this option switches on the extended sensors -and RRD files naming. +So for each timespan, it calculates how many PDPs need to be consolidated into +one CDP by calculating: + number of PDPs = timespan / (stepsize * rrarows) -Sensors get names like I -(e.g. I) and RRD files are therefore -stored in a standalone directory inside the B directory and get -names like I -(e.g. I). +Bottom line is, set this no smaller than the width of you graphs in pixels. -The B option breaks the compatibility with previous -sensors and RRD files naming and the place where RRDs are stored. If you turn -it on, the plugin will create new RRD files in a standalone directory inside -the B directory and without previous history. You can rename -previous RRD files to the new ones to continue collecting data into the same -RRDs. +=item B I -If not set or set to I, the extended naming is not active. Sensors -get names like I (e.g. I) and RRD files -are stored in the main B directory and get names like -I (e.g. I). -You simply continue using the plugin the old way and additionally also -getting data for newly added sensors in this mode. +Set the "XFiles Factor". This is mostly interesting if you set B +bigger than B. If unsure, don't set this option. -Default setting is I. +=item B I -=item B I or B I +When the C uses a cache (by setting B, see below) +it writes all values for a certain RRD-file if the oldest value is older than +(or equal to) the number of seconds specified. If some RRD-file is not updated +anymore for some reason (the computer was shut down, the network is broken, +etc.) some values may still be in the cache. If B is set, then the +entire cache is searched for entries older than B seconds and +written to disk every I seconds. Since this is kind of expensive and +does nothing under normal circumstances, this value should not be too small. +900 seconds might be a good value, though setting this to 7200 seconds doesn't +normally do much harm either. -Both option modes select the name of the sensor which you want to collect. -The naming scheme is dependent on the state of the B -option (see previous option). Both option modes can also deselect the -sensor according to the B option (see below). +=item B I -For example the option "B I" will cause the collectd -to gather data for the voltage sensor I of the I chip in case -of the B option is set to I. +If this option is set to a value greater than zero, the C will +save values in a cache, as described above. Writing multiple values at once +reduces IO-operations and thus lessens the load produced by updating the files. +The tradeoff is that the graphs kind of "drag behind" and that more memory is +used. -And likewise the option "B I" will -cause the collectd to gather data for the voltage sensor I of the I -on the isa bus at the address 0290 in case of the B -option set to I. +=back + +=head2 Plugin C + +=over 4 + +=item B I + +Selects the name of the sensor which you want to collect or ignore, depending +on the B below. For example, the option "B +I" will cause collectd to gather data for the +voltage sensor I of the I on the isa bus at the address 0290. =item B I|I -If no configuration if given, the B-plugin will collect data from -all sensors. This may not be practical, especially for uninteresting sensors. -Thus, you can use the B-option to pick the sensors you're -interested in. Sometimes, however, it's easier/prefered to collect all -sensors I a few ones. This option enables you to -do that: By setting B to I the effect of -B is inversed: All selected sensors are ignored and all -other sensors are collected. +If no configuration if given, the B-plugin will collect data from all +sensors. This may not be practical, especially for uninteresting sensors. +Thus, you can use the B-option to pick the sensors you're interested +in. Sometimes, however, it's easier/prefered to collect all sensors I a +few ones. This option enables you to do that: By setting B to +I the effect of B is inversed: All selected sensors are ignored +and all other sensors are collected. -back +=back =head2 Plugin C