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

FreeBSD Manual Pages


home | help
APCUPSD(8)		  BSD System Manager's Manual		    APCUPSD(8)

     apcupsd --	a daemon for controlling most APC UPSes

     apcupsd [-b] [-d level | --debug level] [-f file |	--config-file file]
	     [-P file |	--pid-file file]
	     [-p | --kill-on-powerfail | -t | --term-on-powerfail] [-R]

     apcupsd [-k | --killpower | --hibernate | -o | --power-off]

     apcupsd [-h | --help]

     apcupsd [-V | --version]

     The apcupsd daemon	controls the operation of most American	Power Conver-
     sion Corp (APC) UPSes.  During a power failure, apcupsd informs users
     about the loss of utility power and that a	shutdown may occur.  If	util-
     ity power is not restored,	a system shutdown will follow when the battery
     is	exhausted, a specified timeout expires,	a specified battery charge
     percentage	is reached, or a specified battery runtime (based on internal
     UPS calculations and determined by	power consumption rates) expires.  If
     the utility power is restored before one of the these shutdown conditions
     is	met, apcupsd will inform users of this and the shutdown	will generally
     be	cancelled.  Refer to the Implementation	Notes section below for	situa-
     tions in which the	shutdown may not be cancelled.

     The meaning of the	command	line options is	as follows:

     -b		 Run in	the foreground,	do not detach and become a daemon.

     -d	level --debug level
		 Set debugging output level where level	is a number greater
		 than zero.

     -f	file --config-file file
		 Load the specified configuration file.	 The default configu-
		 ration	file is	/etc/apcupsd/apcupsd.conf.  It must be changed
		 when running more than	one copy of apcupsd on the same	com-
		 puter to control multiple UPSes.

     -k	| --killpower |	--hibernate
		 Power down the	UPS in hibernate mode after a 10 second	delay.
		 This option is	normally only used by apcupsd itself to	power
		 down the UPS after a system shutdown has almost completed.
		 In hibernate mode, the	UPS will again supply power to the
		 system	when the utility power returns.

     -o	| --power-off
		 Power down UPS	completely. The	UPS will not supply power to
		 the system when the utility power returns.

     -P	file --pid-file	file
		 Create	the specified process ID file. The default is
		 /var/run/	It must	be changed when	running	more
		 than one copy of apcupsd on the same computer to control mul-
		 tiple UPSes.

     -p	--kill-on-powerfail
		 apcupsd commands the UPS to power down	in hibernate mode just
		 before	apcupsd	starts the system shutdown. This relies	on the
		 grace shutdown	delay of a Smart-UPS being long	enough to al-
		 low the system	to shutdown completely before the UPS shuts
		 off the power to the system and goes into hibernate mode.
		 This shutdown grace delay is a	programmable value stored in a
		 Smart-UPS EEPROM which	can be changed using apctest(8).  In
		 hibernate mode, the UPS will again supply power to the	system
		 when the utility power	returns. Refer to apcupsd.conf(5) for
		 an alternative	method using the KILLDELAY configuration di-
		 rective and the only method available when using a Back-UPS
		 or other UPS operating	in simple signalling mode.

     -t	--term-on-powerfail
		 apcupsd exits immediately when	it issues the system shutdown
		 command.  This	behaviour is useful for	those systems where it
		 is not	possible to insert apcupsd commands in a halt script
		 to issue the killpower	command.  Without this option, apcupsd
		 will wait for the SIGTERM signal from the system shutdown
		 process before	exiting.

     -R		 Put a UPS which runs in smart signalling mode by default (eg
		 a Smart-UPS) into simple signalling mode.

     -v	--version
		 Prints	the apcupsd version number and the program help.

     -h	--help	 Prints	the program help.

     The apcupsd daemon	supports a networking mode called Network Information
     Server  (NIS) -- not related  to Sun's NIS/YP -- in which the daemon
     serves status and event information to clients over a network. See	the
     "Running The Network Information Server" section of the apcupsd manual
     for more information and configuration details on this mode.

     The apcupsd daemon	also supports a	Smart-UPS in SNMP mode provided	an APC
     Web/SNMP or APC PowerNet SNMP card	is installed in	the UPS's SmartSlot.
     For more information and configuration details on this mode, refer	to the
     "Support for SNMP UPSes" section of the apcupsd manual.

     The shutdown is made by calls to the script /etc/apcupsd/apccontrol by
     the apcupsd daemon.  Consequently,	no changes to /etc/inittab are neces-
     sary on Linux as there is no communication	between	the daemon and the
     init(1) process.  Installation of the daemon modifies the halt script so
     that at the end of	the shutdown process, the daemon will be re-executed
     to	power off the UPS in hibernate mode.

     On	some operating systems (eg FreeBSD) there is no	halt script so apccon-
     trol must be modified to cause the	daemon to power	off the	UPS after a
     delay.  Alternatives are to use the --kill-on-powerfail command on	the
     apcupsd command line or refer to apcupsd.conf(5) for details of the
     KILLDELAY configuration directive.

     It	will almost certainly be necessary to customise	the configuration in-
     formation in the /etc/apcupsd/apcupsd.conf	configuration file to suit
     your configuration	and desired UPS	behaviour.

     For information on	the configuration directives and the format of the
     configuration file, refer to apcupsd.conf(5).

     apcupsd generates events when certain conditions occur.  These events are
     sent to the system	log and, optionally, to	the temporary events file
     (/var/log/	 They also generate a call to  the
     /etc/apcupsd/apccontrol script which in turn will call any	custom scripts
     placed in the /etc/apcupsd	directory which	may override apccontrol's de-
     fault behaviour. For details of the events	and customising	apccontrol's
     behaviour,	refer to apccontrol(8).

     If	the DATATIME configuration directive is	set to non-zero, apcupsd will
     log a data	record at the interval defined by the DATATIME directive. This
     data record is in a format	similar	to the APC PowerChute software data
     file format.

     The status	report output format is	simple ASCII. Generally	there is a
     single piece of information on each line of output. The content varies
     based on the model	of UPS being used and, in some cases, the firmware
     version. This status report is also optionally written the	the
     /etc/apcupsd/apcupsd.status file. Refer to	apcaccess(8) for full details
     of	the status report output.

     /etc/apcupsd/apcupsd.conf default configuration file

     /var/run/ default process ID file

     /var/log/apcupsd.status optional status file

     /var/log/ default events file

     apcupsd.conf(5), apcaccess(8), apccontrol(8), apctest(8).

     The HTML apcupsd manual installed on your system or available online at

   This	page
     Trevor Roydhouse (current)
     Andre M. Hedrick
     Christopher J. Reimer

     Adam Kropelin (current Project Manager and	Code Maintainer)
     Kern Sibbald (former Project Manager and Code Maintainer)
     Riccardo Facchetti	(former	Project	Manager	and Code Maintainer)
     Andre M. Hedrick (Project Founder and former Code Maintainer)

     An	enormous number	of users who have devoted their	time and energy	to
     this project -- thanks.

apcupsd	v3.14.6		       January 10, 2009		       apcupsd v3.14.6


Want to link to this manual page? Use this URL:

home | help