Skip site navigation (1)Skip section navigation (2)

FreeBSD Manual Pages

  
 
  

home | help
SENSORSD(8)		FreeBSD	System Manager's Manual		   SENSORSD(8)

NAME
     sensorsd -- hardware sensors monitor

SYNOPSIS
     sensorsd [-d] [-c check] [-f file]

DESCRIPTION
     The sensorsd utility retrieves sensor monitoring data like	fan speed,
     temperature, voltage and RAID logical disk	status from the	sysctl(2)
     hw.sensors	subtree.  When the state of any	monitored sensor changes, an
     alert is triggered.  Every	alert logs a message to	syslog(3) using	the
     daemon facility.  Optionally, an alert can	be configured to execute a
     command.

     By	default, sensorsd monitors status changes on all sensors that keep
     their state, thus sensors that automatically provide status do not	re-
     quire any additional configuration.  In addition, for every sensor, no
     matter whether it automatically provides its state	or not,	custom low and
     high limits may be	set, so	that a local notion of sensor status can be
     computed by sensorsd, indicating whether the sensor is within or is ex-
     ceeding its limits.

     Limit and command values for a particular sensor may be specified in the
     sensorsd.conf(5) configuration file.  This	file is	reloaded upon receiv-
     ing SIGHUP.

     The options are as	follows:

     -c	check
	     Check sensors every check seconds.	 The default is	20.  The state
	     of	a sensor is not	yet regarded as	changed	when a check returns a
	     new state for the first time, but only when the two subsequent
	     checks both confirm the new state.

     -d	     Do	not daemonize.	If this	option is specified, sensorsd will run
	     in	the foreground.

     -f	file
	     Read configuration	from file instead of the default configuration
	     file /etc/sensorsd.conf.

FILES
     /etc/sensorsd.conf	 Configuration file for	sensorsd.

SEE ALSO
     sysctl(2),	sensorsd.conf(5), syslog.conf(5), sysctl(8)

HISTORY
     The sensorsd program first	appeared in OpenBSD 3.5.

CAVEATS
     Certain sensors may erratically flip status from time to time.  To	guard
     against false reports, sensorsd requires two confirmations	before report-
     ing a state change.  However, this	inevitably introduces an additional
     delay in status reporting and command execution, e.g. one may notice that
     sensorsd makes its	initial	report about the state of monitored sensors
     not immediately, but by default about 60 seconds after it is started.

FreeBSD	13.0		       January 12, 2018			  FreeBSD 13.0

NAME | SYNOPSIS | DESCRIPTION | FILES | SEE ALSO | HISTORY | CAVEATS

Want to link to this manual page? Use this URL:
<https://www.freebsd.org/cgi/man.cgi?query=sensorsd&sektion=8&manpath=OpenBSD+6.9>

home | help