cookbooks/aws-parallelcluster-slurm/templates/default/slurm/head_node/slurmctld.service.erb

[Unit]
Description=Slurm controller daemon
After=network-online.target munge.service remote-fs.target
Wants=network-online.target
ConditionPathExists=<%= node['cluster']['slurm']['install_dir'] %>/etc/slurm.conf

[Service]
Type=simple
EnvironmentFile=-/etc/sysconfig/slurmctld
ExecStart=<%= node['cluster']['slurm']['install_dir'] %>/sbin/slurmctld -D -s $SLURMCTLD_OPTIONS
ExecReload=/bin/kill -HUP $MAINPID
LimitNOFILE=562930
LimitMEMLOCK=infinity
LimitSTACK=infinity
Restart=on-failure
RestartSec=1s

[Install]
WantedBy=multi-user.target