Ubuntu Manpage: upsdrvctl - UPS driver controller

Provided by: nut-server_2.8.1-4ubuntu1_amd64

NAME

       upsdrvctl - UPS driver controller

SYNOPSIS

       upsdrvctl -h

       upsdrvctl [OPTIONS] {start | stop | shutdown} [ups]

       upsdrvctl [OPTIONS] -c COMMAND [ups]

DESCRIPTION

       upsdrvctl provides a uniform interface for controlling your UPS drivers. You should use upsdrvctl instead
       of direct calls to the drivers whenever possible.

       When used properly, upsdrvctl lets you maintain identical startup scripts across multiple systems with
       different UPS configurations.

       Note: For operating systems with service management frameworks, such as Solaris SMF or Linux systemd, the
       upsdrvsvcctl may be a better choice.

OPTIONS

-h
Display the help text.

-r directory
If starting a driver, this value will direct it to chroot(2) into directory. This can be useful when
securing systems.

This may be set in the ups.conf with "chroot" in the global section.

-t
Enable testing mode. This also enables debug mode. Testing mode makes upsdrvctl display the actions
it would execute without actually doing them. Use this to test out your configuration without
actually doing anything to your UPS drivers. This may be helpful when defining the sdorder directive
in your ups.conf(5).

-u username
If starting a driver, this value will direct it to setuid(2) to the user id associated with username.

If the driver is started as root without specifying this value, it will use the username that was
compiled into the binary. This defaults to "nobody", and is far from ideal.

This may be set in ups.conf with "user" in the global section.

-D
Raise the debug level. Use this multiple times for additional details. Note that this does not
preclude the upsdrvctl tool from exiting after its job is done (however an explicit -F option does).

-d
Pass the selected debug level from upsdrvctl to launched drivers. Note that by default for NUT
daemons, enabled debugging means running in foreground mode; you can specify -B additionally to avoid
that.

-F
Driver will run in the foreground (not fork away from the upsdrvctl process), regardless of debugging
settings. It would also keep the tool program itself foregrounded with driver daemons running as its
children (in case of a single driver startup, it would not even fork). It would also not wait for
drivers to complete initialization, so upsdrvctl will warn about such situations. Specify twice (-FF
or -F -F) to save the driver PID file even in this mode (not saved by default when staying in
foreground).

-B
Drivers will run in the background, regardless of debugging settings, as set by -D and passed-through
by -d options.

COMMANDS

upsdrvctl supports three commands - start, stop and shutdown. It also supports passing requests to
running drivers using -c COMMAND syntax, similar to that in some other daemons.

They all can take an optional argument which is a UPS name from ups.conf(5). Without that argument, they
operate on every UPS that is currently configured.

Note

upsdrvctl can not manage devices not listed in ups.conf (such as test drivers started with -s TMP
option).

start
Start the UPS driver(s). In case of failure, further attempts may be executed by using the maxretry
and retrydelay options - see ups.conf(5).

stop
Stop the UPS driver(s). This does not send commands to the UPS.

shutdown
Command the UPS driver(s) to run their shutdown sequence. This assumes that the driver is no longer
running, and starts a fresh instance via "driver -k". It is intended to be used as the last step in
system shutdown, after the filesystems are no longer mounted rw. Drivers are stopped according to
their sdorder value - see ups.conf(5).

Warning

this will probably power off your computers, so don’t play around with this option. Only use it when
your systems are prepared to lose power.

Note

refer to ups.conf(5) for using the nowait parameter. It can be overridden by NUT_IGNORE_NOWAIT
environment variable (e.g. used to work around certain issues with systemd otherwise).

-c command
Send command to the background process as a signal. Valid commands are:

dump
tell the driver(s) to dump currently known state information to their stdout (if attached
anywhere)

reload
reread configuration files, ignoring modified settings which can not be applied "on the fly"

reload-or-error
reread configuration files, ignoring but counting changed values which require a driver restart
(can not be changed on the fly), and return a success/fail code based on that count, so the
caller can decide the fate of the currently running driver instance

reload-or-exit
reread configuration files, exiting the old driver process if it encounters modified settings
which can not be applied "on the fly" (so caller like systemd can launch another copy of the
driver)

If the upsdrvctl was launched to remain in memory and manage NUT driver processes, it can receive
supported signals and pass them to those drivers.

ENVIRONMENT VARIABLES

       NUT_DEBUG_LEVEL sets default debug verbosity if no -D arguments were provided on command line, but does
       not request that the daemon runs in foreground mode.

       NUT_CONFPATH is the path name of the directory that contains ups.conf and other configuration files. If
       this variable is not set, upsdrvctl (and the drivers) use a built-in default, which is often
       /usr/local/ups/etc.

       NUT_ALTPIDPATH is the path name of the directory in which upsd and drivers store .pid files. If this
       variable is not set, upsd and drivers use either NUT_STATEPATH if set, or ALTPIDPATH if set, or otherwise
       the built-in default STATEPATH.

DIAGNOSTICS

       upsdrvctl will return a nonzero exit code if it encounters an error while performing the desired
       operation. This will also happen if a driver takes longer than the maxstartdelay period to enter the
       background.