slurm*: add pages (#11133)

Author:    xuzhangheng <48378279+xuzhangheng@users.noreply.github.com>
Co-authored-by: Magrid <magrid0@proton.me>
Co-authored-by: K.B.Dharun Krishna <kbdharunkrishna@gmail.com>

pages/linux/slurmctld.md

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+# slurmctld
+
+> Monitor all other Slurm daemons and resources, accept work (jobs), and allocate resources to those jobs.
+> More information: <https://slurm.schedmd.com/slurmctld.html>.
+
+- Clear all previous `slurmctld` states from its last checkpoint:
+
+`slurmctld -c`
+
+- Set the daemon's nice value to the specified value, typically a negative number:
+
+`slurmctld -n {{value}}`
+
+- Write log messages to the specified file:
+
+`slurmctld -L {{path/to/output_file}}`
+
+- Display help:
+
+`slurmctld -h`
+
+- Display version:
+
+`slurmctld -V`

pages/linux/slurmd.md

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+# slurmd
+
+> Monitors all tasks running on the compute node, accepts tasks, launches tasks, and kills running tasks upon request.
+> More information: <https://slurm.schedmd.com/slurmd.html>.
+
+- Report node rebooted when daemon restarted (Used for testing purposes):
+
+`slurmd -b`
+
+- Run the daemon with the given nodename:
+
+`slurmd -N {{nodename}}`
+
+- Write log messages to the specified file:
+
+`slurmd -L {{path/to/output_file}}`
+
+- Read configuration from the specified file:
+
+`slurmd -f {{path/to/file}}`
+
+- Display help:
+
+`slurmd -h`

pages/linux/slurmdbd.md

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+# slurmdbd
+
+> Provides a secure enterprise-wide interface to a database for Slurm.
+> More information: <https://slurm.schedmd.com/slurmdbd.html>.
+
+- Set the daemon's nice value to the specified value, typically a negative number:
+
+`slurmdbd -n {{value}}`
+
+- Change the working directory of `slurmdbd` to the LogFile path or to `/var/tmp`:
+
+`slurmdbd -s`
+
+- Display help:
+
+`slurmdbd -h`
+
+- Display version:
+
+`slurmdbd -V`

pages/linux/slurmrestd.md

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+# slurmrestd
+
+> Interface to Slurm via REST API. It can be used in two modes: *Inetd Mode* & *Listen Mode*.
+> More information: <https://slurm.schedmd.com/slurmrestd.html>.
+
+- Change the group ID (and drop supplemental groups) before processing client requests:
+
+`slurmrestd --g {{group_id}} {{[host]:port | unix:/path/to/socket}}`
+
+- Comma-delimited list of authentication plugins to load:
+
+`slurmrestd -a {{authentication_plugins}} {{[host]:port | unix:/path/to/socket}}`
+
+- Read Slurm configuration from the specified file:
+
+`slurmrestd -f {{path/to/file}}`
+
+- Change user ID before processing client request:
+
+`slurmrestd -u {{user_id}}`
+
+- Display help:
+
+`slurmrestd -h`
+
+- Display version:
+
+`slurmrestd -V`

pages/linux/slurmstepd.md

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+# slurmstepd
+
+> Slurm daemon for managing and monitoring individual job steps within a multi-step job.
+> It should not be invoked manually.
+> More information: <https://slurm.schedmd.com/slurmstepd.html>.
+
+- Start the daemon:
+
+`slurmstepd`