CLONE(8) Network UPS Tools (NUT) CLONE(8)NAMEclone - UPS driver cloneNOTE
This man page only documents the specific features of the clone driver.
For information about the core driver, see nutupsdrv(8).
DESCRIPTION
This driver, which sits on top of another driver socket, allows to
group clients to a particular outlet of a device and deal with this
output as if it was a normal UPS.
EXTRA ARGUMENTS
This driver supports the following settings:
load.off=command
Recommended. Set the command on the 'real' UPS driver that will
be used to switch off the outlet. You need both load.off and
load.on in order to power cycle the outlet. Otherwise, shutting
down the clients powered by an outlet is a one way street (see
IMPORTANT).
load.on=command
Recommended. Set the command on the 'real' UPS driver that will
be used to switch on the outlet. You need both load.off and
load.on in order to power cycle the outlet. Otherwise, shutting
down the clients powered by an outlet is a one way street (see
IMPORTANT).
load.status=value
Recommended. Set the variable on the 'real' UPS driver that
will be used to indicate the outlet status (ie on/off). If not
specified, the clone driver will attempt to keep track of the
outlet status, but this is less reliable.
offdelay=num
Set the timer (in seconds) before the outlet is turned off after
the shutdown condition (OB LB) for this outlet is met or a com‐
mand to shutdown was issued. Defaults to 120 seconds.
ondelay=num
Set the timer (in seconds) for the outlet to switch on in case
the power returns after the oulet has been switched off.
Defaults to 30 seconds.
mincharge=value
Set the remaining battery level when the clone UPS switches to
LB (percent).
minruntime=value
Set the remaining battery runtime when the clone UPS switches to
LB (seconds).
IMPLEMENTATION
The port specification in the ups.conf(5) reference the driver socket
that the 'real' UPS driver is using. For example:
[realups]
driver = usbhid-ups
port = auto
[clone-outlet-1]
driver = clone
port = usbhid-ups-realups
load.on = outlet.1.load.on
load.off = outlet.1.load.off
load.status = outlet.1.status
[...]
IMPORTANT
Unlike a real UPS, you should not configure a upsmon master for this
driver. When a upsmon master sees the OB LB flags and tells the upsd
server it is OK to initiate the shutdown sequence, the server will
latch the FSD status and it will not be possible to restart the systems
connected without restarting the upsd server.
This will be a problem if the power returns after the clone UPS initi‐
ated the shutdown sequence on it's outlet, but returns before the real
UPS begins shutting down. The solution is in the clone driver, that
will insert the FSD flag if needed without the help of a upsmon master.
CAVEATS
The clone UPS will follow the status on the real UPS driver. You can
only make the clone UPS shutdown earlier than the real UPS driver, not
later. If the real UPS driver initiates a shutdown, the clone UPS
driver will immediately follow.
Be aware that the commands to shutdown/restart an outlet on the real
UPS drivers are not affected, so if you tell the real UPS driver to
shutdown the outlet of the clone UPS driver, your clients will lose
power without warning.
AUTHOR
Arjen de Korte <adkorte-guest@alioth.debian.org>
SEE ALSOupscmd(1), upsrw(1), ups.conf(5), nutupsdrv(8)
Internet resources:
The NUT (Network UPS Tools) home page: http://www.networkupstools.org/
Mon Jul 20 2009 CLONE(8)
