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sackd(8)	       Slurm Auth and Cred Kiosk Daemon		      sackd(8)

NAME
       sackd - Slurm Auth and Cred Kiosk Daemon.

SYNOPSIS
       sackd [OPTIONS...]

DESCRIPTION
       sackd  is the Slurm Auth	and Cred Kiosk Daemon. It can be used on login
       nodes that are not running slurmd daemons to  allow  authentication  to
       the  cluster.  The  program will	run as the SlurmdUser. When running in
       Slurm's "configless" mode, in which case	configuration  files  are  re-
       trieved	and  written  under the	/run/slurm/conf	directory (unless RUN-
       TIME_DIRECTORY is set).

OPTIONS
       --ca-cert-file <file>
	      Absolute path to CA certificate used for fetching	 configuration
	      when running configless in a TLS enabled cluster.

       --conf-server host[:port]
	      Retrieve	configs	 from  slurmctld  running at host[:port].  Re-
	      quires slurmctld support provided	by  setting  enable_configless
	      in SlurmctldParameters.

       -D     Run sackd	in the foreground with logging copied to stderr.

       --disable-reconfig
	      Fetch  configurations in configless mode once, but do not	regis-
	      ter with slurmctld for further reconfiguration updates.

       -f config
	      Read configuration from the specified file.

       -h     Help; print a brief summary of command options.

       --jwks-file <file>
	      Read auth/slurm JWKS information from the	 specified  file.  De-
	      fault  value  is	slurm.jwks  located  in	 the same directory as
	      slurm.conf.

       --key-file <file>
	      Read auth/slurm authentication key from the specified file.  De-
	      fault  value  is	slurm.key  located  in	the  same directory as
	      slurm.conf.

       --port number
	      Port socket number to listen for reconfiguration	updates.  This
	      can  be  useful  when multiple sackds co-exist on	the same login
	      node. The	default	value is SlurmdPort.

       --systemd
	      To be used when started from a systemd unit file.

       -v     Verbose mode. Multiple -v's increase verbosity.

ENVIRONMENT VARIABLES
       The following environment variables can be used	to  override  settings
       compiled	into sackd.

       ABORT_ON_FATAL
	      When a fatal error is detected, use abort() instead of exit() to
	      terminate	 the  process.	This  allows backtraces	to be captured
	      without recompiling Slurm.

       RUNTIME_DIRECTORY
	      Absolute path governing the location for both the	 configuration
	      cache  sackd  maintains, and the sack.socket unix	socket used to
	      provide authentication services.

	      If multiple sackds need to be started on the  same  login	 node,
	      the  RuntimeDirectory  systemd  unit  option  should  be	set to
	      slurm-<clustername>.  Systemd  v240+  automatically  sets	  RUN-
	      TIME_DIRECTORY to	/run/$RuntimeDirectory for each	sackd service,
	      otherwise	 it  requires manual setting (i.e. via EnvironmentFile
	      unit option).

	      If this is not set, the default value is /run/slurm/.

       SACKD_DEBUG
	      Set debug	level explicitly for syslog and	stderr.	 Valid	values
	      are  0-9,	or the same string values as the debug options such as
	      SlurmctldDebug in	slurm.conf(5).

       SACKD_DISABLE_RECONFIG
	      Same as --disable-reconfig.

       SACKD_PORT
	      Same as --port.

       SACKD_STDERR_DEBUG
	      Set debug	level explicitly for stderr. Valid values are 0-9,  or
	      the same string values as	the debug options such as SlurmctldDe-
	      bug in slurm.conf(5).

       SACKD_SYSLOG_DEBUG
	      Set  debug level explicitly for syslog. Valid values are 0-9, or
	      the same string values as	the debug options such as SlurmctldDe-
	      bug in slurm.conf(5).

       SLURM_CONF
	      The location of the Slurm	configuration file.

       SLURM_DEBUG_FLAGS
	      Specify debug flags for sackd to	use.  See  DebugFlags  in  the
	      slurm.conf(5) man	page for a full	list of	flags. The environment
	      variable takes precedence	over the setting in the	slurm.conf.

SIGNALS
       SIGINT
	     sackd will	shutdown cleanly.

       SIGHUP
	     sackd will	reconfigure.

       SIGUSR2 SIGPIPE
	     This signal is explicitly ignored.

COPYING
       Copyright (C) SchedMD LLC.

       This  file  is  part  of	Slurm, a resource management program.  For de-
       tails, see <https://slurm.schedmd.com/>.

       Slurm is	free software; you can redistribute it and/or modify it	 under
       the  terms  of  the GNU General Public License as published by the Free
       Software	Foundation; either version 2 of	the License, or	(at  your  op-
       tion) any later version.

       Slurm  is  distributed  in the hope that	it will	be useful, but WITHOUT
       ANY WARRANTY; without even the implied warranty of  MERCHANTABILITY  or
       FITNESS	FOR  A	PARTICULAR PURPOSE. See	the GNU	General	Public License
       for more	details.

SEE ALSO
       slurm.conf(5), slurmctld(8)

Slurm 25.11	       Slurm Auth and Cred Kiosk Daemon		      sackd(8)

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