fix situation where all partitions are empty

Author: sjpb

templates/slurm.conf.j2

@@ -135,6 +135,9 @@ NodeName={{ hostlist }} State=UNKNOWN RealMemory={{ group.get('ram_mb', ram_mb)
 PartitionName={{part.name}} Default={{ part.get('default', 'YES') }} MaxTime={{ part.get('maxtime', openhpc_job_maxtime) }} State=UP Nodes={{ nodelist | join(',') }} {{ part.partition_params | default({}) | dict2parameters }}
 {% endfor %}{# partitions #}
 
+# Define a non-existent node, in no partition, so that slurmctld starts even with all partitions empty
+NodeName=nonesuch
+
 # Want nodes that drop out of SLURM's configuration to be automatically
 # returned to service when they come back.
 ReturnToService=2