bionic (8) slurmctld-wlm-emulator.8.gz

NAME

       slurmctld - The central management daemon of Slurm.

SYNOPSIS

       slurmctld [OPTIONS...]

DESCRIPTION

       slurmctld  is  the central management daemon of Slurm. It monitors all other Slurm daemons and resources,
       accepts work (jobs), and  allocates  resources  to  those  jobs.  Given  the  critical  functionality  of
       slurmctld,  there  may  be a backup server to assume these functions in the event that the primary server
       fails.

       OPTIONS

       -B     Do not recover state of BlueGene blocks when running on a bluegene system.

       -c     Clear all previous slurmctld state  from  its  last  checkpoint.   With  this  option,  all  jobs,
              including  both  running  and  queued, and all node states, will be deleted.  Without this option,
              previously running jobs will be preserved along with node State  of  DOWN,  DRAINED  and  DRAINING
              nodes  and  the  associated Reason field for those nodes.  NOTE: It is rare you would ever want to
              use this in production as all jobs will be killed.

       -D     Run slurmctld in the foreground with logging copied to stdout.

       -f <file>
              Read configuration from the specified file. See NOTES below.

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

       -i     Ignore errors found while reading in state files on startup.

       -L <file>
              Write log messages to the specified file.

       -n <value>
              Set the daemon's nice value to the specified value, typically a negative number.

       -r     Recover partial state from last checkpoint: jobs and node DOWN/DRAIN state and reason  information
              state.  No partition state is recovered.  This is the default action.

       -R     Recover  full  state  from last checkpoint: jobs, node, and partition state.  Without this option,
              previously running jobs will be preserved along with node State  of  DOWN,  DRAINED  and  DRAINING
              nodes  and  the  associated Reason field for those nodes. No other node or partition state will be
              preserved.

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

       -V     Print version information and exit.

ENVIRONMENT VARIABLES

       The following environment variables can be used to override settings compiled into slurmctld.

       SLURM_CONF          The location of the Slurm configuration file. This is overridden by explicitly naming
                           a configuration file on the command line.

CORE FILE LOCATION

       If  slurmctld  is  started  with  the -D option then the core file will be written to the current working
       directory.  Otherwise if SlurmctldLogFile is a fully qualified path name (starting  with  a  slash),  the
       core  file will be written to the same directory as the log file, provided SlurmUser has write permission
       on the directory.  Otherwise the core file will be written to the StateSaveLocation, or "/var/tmp/" as  a
       last  resort.  If none of the above directories have write permission for SlurmUser, no core file will be
       produced.  The command "scontrol abort" can be used to abort the slurmctld daemon  and  generate  a  core
       file.

NOTES

       It  may  be  useful  to  experiment  with  different  slurmctld specific configuration parameters using a
       distinct configuration file (e.g. timeouts).  However, this special configuration file will not  be  used
       by  the  slurmd daemon or the Slurm programs, unless you specifically tell each of them to use it. If you
       desire changing communication ports, the location of the temporary file system, or other parameters  used
       by other Slurm components, change the common configuration file, slurm.conf.

COPYING

       Copyright  (C)  2002-2007  The Regents of the University of California.  Copyright (C) 2008-2010 Lawrence
       Livermore National Security.  Produced  at  Lawrence  Livermore  National  Laboratory  (cf,  DISCLAIMER).
       CODE-OCEC-09-009. All rights reserved.

       This    file    is    part    of    Slurm,   a   resource   management   program.    For   details,   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
       option) 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), slurmd(8)