collectd - System information collection daemon
=================================================
-http://verplant.org/collectd/
+http://collectd.org/
About
-----
* collectd is able to collect the following data:
+ - Apache server utilization
+ (Number of bytes transfered, number of requests handled and detailed
+ scoreboard statistics)
+
+ - Apple Sensors
+ (Temperature, fanspeed and voltage sensors of apple computers)
+
+ - Battery
+ (Charge, current and charge of ACPI and PMU based batteries)
+
- CPU utilization
(Time spent in system, user, nice and idle)
- CPU frequency
(For laptops with speed step or a similar technology)
+ - Mountpoint usage
+ (Basically the values `df(1)' delivers)
+
- Disk utilization
(Sectors read/written, number of read/write actions, time spent doing IO)
- Memory utilization
(Memory occupied by running processes, page cache, buffer cache and free)
+ - MySQL server statistics
+ (Commands issued, handlers triggered, thread usage, query cache
+ utilization and traffic sent/received)
+
- NFS Procedures
(Which NFS command were called how often. Only NFSv2 and NFSv3 right now)
- Ping latency
(Time to reach the default gateway or another given host)
- - Serial
- (RX and TX of serial interfaces)
+ - Process counts
+ (Number of running, sleeping, zombie, ... processes)
- Sensors
(System temperatured and fan rotation speeds)
+ - Serial
+ (RX and TX of serial interfaces)
+
- Swap
(Pages swapped out onto harddisk or whatever is called `swap' by the OS..)
- Traffic
(In/Outbound traffic on the interfaces)
+ - Users
+ (Currently logged in users)
+
+ - VServer
+ (System ressources used by vservers)
+
+ - Wireless
+ (Link quality of wireless cards)
+
* Performance: Running as a daemon collectd doesn't spend much time in
startup. Since collectd links against libping, librrd and libsensors it
doesn't need to start any other processes.
Operation
---------
+ * collectd's configuration file can be found at `sysconfdir'/collectd.conf.
+ Run `collectd -h' for a list of builtin defaults. See `collectd.conf(5)'
+ for a list of options and a syntax description.
+
* When running collectd writes system statistics in RRD-files. Per default
they reside in `/var/lib/collectd'.
- * collectd needs to run as user root, since only root can craft ICMP
- packages needed to ping other hosts. collectd should NOT be installed
- setui root since it can be used to overwrite valuable files..
+ * When using the `ping' plugin collectd needs to run as user root, since only
+ root can craft ICMP packages needed to ping other hosts. collectd should
+ NOT be installed setuid root since it can be used to overwrite valuable
+ files..
* Sample scripts to generate graphs reside in `contrib/' in the source
package or somewhere near `/usr/share/doc/collectd' in most distributions.
own experiments.. Some of them require the `RRDs' Perl module.
(`librrds-perl' on Debian)
- * The RRD-files that collectd creates hold the following data. Use ``rrdtool
- resize'' if you want to cover longer/shorter periods of time.
-
- Resolution | Data points | Timespan
- -----------+-------------+----------
- 60 seconds | 1500 | 25 hours
- 30 minutes | 1680 | 35 days
- 6 hours | 1520 | 380 days
-
- * Use `-c' to start in client-, `-s' to start in server-mode. Read the
- manpage for details.
+ * The RRAs of the automatically created RRD files depend on the `step'
+ and `heartbeat' settings given on compile time. For a list of the
+ default RRAs take a look in the collectd(1) manpage.
Prerequisites
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.
+ * libmysqlclient (optional)
+
* lm-sensors (optional)
* libstatgrab may be used to collect statistics on systems other than Linux
this library, are not supported in collectd right now..
<http://www.i-scream.org/libstatgrab/>
+ * libcurl (optional)
+ If you want to use the `apache' plugin
+
+ * CoreFoundation.framework and IOKit.framework
+ For copiling on darwin in general and the `apple_sensors' plugin in
+ particular.
+
Author
------
projects / collectd.git / blobdiff