voltage sensors.
- battery
- Batterycharge, -current and volatage of ACPI and PMU based laptop
+ Batterycharge, -current and voltage of ACPI and PMU based laptop
batteries.
- cpu
MySQL server statistics: Commands issued, handlers triggered, thread
usage, query cache utilization and traffic/octets sent and received.
+ - netlink
+ Very detailed Linux network interface and routing statistics. You can get
+ (detailed) information on interfaces, qdiscs, classes, and, if you can
+ make use of it, filters.
+
- network
Receive values that were collected by other hosts. Large setups will
want to collect the data on one dedicated machine, and this is the
- perl
The perl plugin implements a Perl-interpreter into collectd. You can
- write your own plugins in Perl and return arbitary values using this
+ write your own plugins in Perl and return arbitrary values using this
API. See collectd-perl(5).
This plugin is still considered to be experimental and subject to change
- serial
RX and TX of serial interfaces. Linux only; needs root privileges.
+ - snmp
+ Read values from SNMP (Simple Network Management Protocol) enabled
+ network devices such as switches, routers, thermometers, rack monitoring
+ servers, etc. See collectd-snmp(5).
+
- swap
Pages swapped out onto harddisk or whatever is called `swap' by the OS..
Users currently logged in.
- vserver
- System ressources used by Linux VServers.
+ System resources used by Linux VServers.
See <http://linux-vserver.org/>.
- wireless
Link quality of wireless cards. Linux only.
+ - xmms
+ Bitrate and frequency of music played with XMMS.
+
* Output can be written or send to various destinations by the following
plugins:
- csv
- Write to comma seperated values (CSV) files. This needs lots of
+ Write to comma separated values (CSV) files. This needs lots of
diskspace but is extremely portable and can be analysed with almost
every program that can analyse anything. Even Microsoft's Excel..
Writes logmessages to a file or STDOUT/STDERR.
- syslog
- Logs to the standard UNIX logging mechanismn, syslog.
+ Logs to the standard UNIX logging mechanism, syslog.
* Performance: Since collectd is running as a daemon it doesn't spend much
time starting up again and again. With the exception of the exec plugin no
and multicore processors and makes sure that the daemon isn't idle if only
one plugins waits for an IO-operation to complete.
- * Once set up, hardly any maintenence is neccessary. Setup is kept as easy
+ * Once set up, hardly any maintenance is necessary. Setup is kept as easy
as possible and the default values should be okay for most users.
* A POSIX-threads (pthread) implementation.
Since gathering some statistics is slow (network connections, slow devices,
- etc) the collectd is parellelized. The POSIX threads interface is being
+ etc) the collectd is parallelized. The POSIX threads interface is being
used and should be found in various implementations for hopefully all
platforms.
* libmysqlclient (optional)
+ * libnetlink (optional)
+
+ * libnetsnmp (optional)
+
* liboping (optional, if not found a version shipped with this distribution
can be used)
Used by the `ping' plugin to send and receive ICMP packets.
* librrd (optional; headers and library; rrdtool 1.0 and 1.2 both work fine)
If built without `librrd' the resulting binary will be `client only', i.e.
- will send it's values via multicast and not create any RRD files itself.
- Alternatively you can chose to write CSV-files (Comma Seperated Values)
+ will send its values via multicast and not create any RRD files itself.
+ Alternatively you can chose to write CSV-files (Comma Separated Values)
instead.
* libsensors (optional)
* libupsclient/nut (optional)
For the `nut' plugin which queries nut's `upsd'.
+ * libxmms (optional)
+
* librt, libsocket, libkstat, libdevinfo
Various standard Solaris libraries which provide system functions.
For compiling on Darwin in general and the `apple_sensors' plugin in
particular.
+
+Crosscompiling
+--------------
+
+ To compile correctly collectd needs to be able to initialize static
+ variables to NAN (Not A Number). Some C libraries, especially the GNU
+ libc, have a problem with that.
+
+ Luckily, with GCC it's possible to work around that problem: One can define
+ NAN as being (0.0 / 0.0) and `isnan' as `f != f'. However, to test this
+ ``implementation'' the configure script needs to compile and run a short
+ test program. Obviously running a test program when doing a cross-
+ compilation is, well, challenging.
+
+ If you run into this problem, you can use the `--with-nan-emulation'
+ configure option to force the use of this implementation. We can't promise
+ that the compiled binary actually behaves as it should, but since NANs
+ are likely never passed to the libm you have a good chance to be lucky.
+
+
+Contact
+-------
+
+ For questions, bugreports, development information and basically all other
+ concerns please send an email to collectd's mailinglist at
+ <collectd at verplant.org>.
+
+ For live discussion and more personal contact visit us in IRC, we're in
+ channel #collectd on freenode.
+
+
Author
------
Sebastian tokkee Harl <sh at tokkee.org>,
and many contributors (see `AUTHORS').
+ Please send bugreports and patches to the mailinglist, see `Contact' above.
+
projects / collectd.git / blobdiff