1slurmctld(8) Slurm Daemon slurmctld(8)
2
6 slurmctld - The central management daemon of Slurm.
7
9 slurmctld [OPTIONS...]
10
12 slurmctld is the central management daemon of Slurm. It monitors all
13 other Slurm daemons and resources, accepts work (jobs), and allocates
14 resources to those jobs. Given the critical functionality of slurmctld,
15 there may be a backup server to assume these functions in the event
16 that the primary server fails.
17 OPTIONS
19 -c Clear all previous slurmctld state from its last checkpoint.
22 With this option, all jobs, including both running and queued,
23 and all node states, will be deleted. Without this option, pre‐
24 viously running jobs will be preserved along with node State of
25 DOWN, DRAINED and DRAINING nodes and the associated Reason field
26 for those nodes. NOTE: It is rare you would ever want to use
27 this in production as all jobs will be killed.
28 -d Run slurmctld in the background.
31 -D Run slurmctld in the foreground with logging copied to stdout.
33 -f <file>
35 Read configuration from the specified file. See NOTES below.
36 -h Help; print a brief summary of command options.
38 -i Ignore errors found while reading in state files on startup.
40 Warning: Use of this option will mean losing the data that
41 wasn't recovered from the state files.
42 -L <file>
44 Write log messages to the specified file.
45 -n <value>
48 Set the daemon's nice value to the specified value, typically a
49 negative number.
50 -r Recover partial state from last checkpoint: jobs and node
53 DOWN/DRAIN state and reason information state. No partition
54 state is recovered. This is the default action.
55 -R Recover full state from last checkpoint: jobs, node, and parti‐
58 tion state. Without this option, previously running jobs will
59 be preserved along with node State of DOWN, DRAINED and DRAINING
60 nodes and the associated Reason field for those nodes. No other
61 node or partition state will be preserved.
62 -s Change working directory of slurmctld to SlurmctldLogFile path
65 if possible, or to SlurmStateSaveLocation otherwise. If both of
66 them fail it will fallback to /var/tmp.
67 -v Verbose operation. Multiple -v's increase verbosity.
70 -V Print version information and exit.
72
75 The following environment variables can be used to override settings
76 compiled into slurmctld.
77 SLURM_CONF The location of the Slurm configuration file. This
79 is overridden by explicitly naming a configuration
80 file on the command line.
81
84 If slurmctld is started with the -D option then the core file will be
85 written to the current working directory. Otherwise if SlurmctldLog‐
86 File is a fully qualified path name (starting with a slash), the core
87 file will be written to the same directory as the log file, provided
88 SlurmUser has write permission on the directory. Otherwise the core
89 file will be written to the StateSaveLocation, or "/var/tmp/" as a last
90 resort. If none of the above directories have write permission for
91 SlurmUser, no core file will be produced. The command "scontrol abort"
92 can be used to abort the slurmctld daemon and generate a core file.
93
96 SIGTERM SIGINT
97 slurmctld will shutdown cleanly, saving its current state to the
98 state save directory.
99 SIGABRT
101 slurmctld will shutdown cleanly, saving its current state, and
102 perform a core dump.
103 SIGHUP Reloads the slurm configuration files, similar to 'scontrol re‐
105 configure'.
106 SIGUSR2
108 Reread the log level from the configs, and then reopen the log
109 file. This should be used when setting up logrotate(8).
110 SIGCHLD SIGUSR1 SIGTSTP SIGXCPU SIGQUIT SIGPIPE SIGALRM
112 These signals are explicitly ignored.
113
116 It may be useful to experiment with different slurmctld specific con‐
117 figuration parameters using a distinct configuration file (e.g. time‐
118 outs). However, this special configuration file will not be used by
119 the slurmd daemon or the Slurm programs, unless you specifically tell
120 each of them to use it. If you desire changing communication ports, the
121 location of the temporary file system, or other parameters used by
122 other Slurm components, change the common configuration file,
123 slurm.conf.
124
127 Copyright (C) 2002-2007 The Regents of the University of California.
128 Copyright (C) 2008-2010 Lawrence Livermore National Security. Copy‐
129 right (C) 2010-2021 SchedMD LLC. Produced at Lawrence Livermore Na‐
130 tional Laboratory (cf, DISCLAIMER). CODE-OCEC-09-009. All rights re‐
131 served.
132 This file is part of Slurm, a resource management program. For de‐
134 tails, see <https://slurm.schedmd.com/>.
135 Slurm is free software; you can redistribute it and/or modify it under
137 the terms of the GNU General Public License as published by the Free
138 Software Foundation; either version 2 of the License, or (at your op‐
139 tion) any later version.
140 Slurm is distributed in the hope that it will be useful, but WITHOUT
142 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
143 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
144 for more details.
145
148 slurm.conf(5), slurmd(8)
149March 2020 Slurm Daemon slurmctld(8)