run slurmctld as user

Notice: also trying to run slurmd on execute nodes as user makes no
sense because it breaks sbatch. Furthermore there is another necessary
to run mpi jobs (just tried MpiDefault=none). I don't consider running
slurmd as root a good idea, but there seems to be no other choice at the
moment.

roles/slurm/templates/slurm.conf.j2

@@ -32,6 +32,7 @@ CryptoType=crypto/munge
 #MaxStepCount=40000
 #MaxTasksPerNode=128
 MpiDefault=pmix
+# when running slurmd as user change to: MpiDefault=none
 #MpiParams=ports=#-#
 #PluginDir=
 #PlugStackConfig=
@@ -57,8 +58,9 @@ SlurmctldPort=6817
 SlurmdPidFile=/var/run/slurm/slurmd.pid
 SlurmdPort=6818
 SlurmdSpoolDir=/var/spool/slurm/d
-SlurmUser=root
-#SlurmdUser=root
+SlurmUser={{slurm_user}}
+SlurmdUser=root
+# SlurmdUser=slurm -> sbatch does not work
 #SrunEpilog=
 #SrunProlog=
 StateSaveLocation=/var/spool/slurm/ctld
@@ -130,7 +132,7 @@ AccountingStorageType=accounting_storage/none
 #AccountingStorageUser=
 AccountingStoreJobComment=YES
 ClusterName=cluster
-#DebugFlags=
+#DebugFlags=Steps,TraceJobs
 #JobCompHost=
 JobCompLoc=/tmp/jobcomp
 #JobCompPass=
@@ -141,12 +143,9 @@ JobCompType=jobcomp/filetxt
 JobAcctGatherFrequency=30
 JobAcctGatherType=jobacct_gather/none
 SlurmctldDebug=verbose
-#SlurmctldLogFile=
 SlurmctldLogFile={{slurm_log_path_ctld}}
 SlurmdDebug=verbose
-#SlurmdLogFile=
 SlurmdLogFile={{slurm_log_path_d}}
-#SlurmSchedLogFile=
 SlurmSchedLogFile={{slurm_log_path_sched}}
 #SlurmSchedLogLevel=
 #