Following discussion with slurm-llnl's maintainer, here's a testing setup:

Create 3 VMs:
 * one with {{{slurmd}}} (work node, 2 CPUs)
 * one with {{{slurmctld}}}
 * and one with {{{slurmdbd}}}.
The hostname are the services they run (populate {{{/etc/hostname}}} and {{{/etc/hosts}}} accordingly). 
{{{slurm.conf}}} and {{{slurmdbd.conf}}} are below.<<BR>>
They all share the same {{{/etc/munge/munge.key}}} file. Make sure munged is running everywhere ({{{update-rc.d munge enable}}}).


{{{/etc/slurm-llnl/slurm.conf}}}:
{{{
ControlMachine=slurmctld
AuthType=auth/munge
CryptoType=crypto/munge
MpiDefault=none
ProctrackType=proctrack/pgid
ReturnToService=1
SlurmctldPidFile=/var/run/slurm-llnl/slurmctld.pid
SlurmctldPort=6817
SlurmdPidFile=/var/run/slurm-llnl/slurmd.pid
SlurmdPort=6818
SlurmdSpoolDir=/var/lib/slurm-llnl/slurmd
SlurmUser=slurm
StateSaveLocation=/var/lib/slurm-llnl/slurmctld
SwitchType=switch/none
TaskPlugin=task/none
InactiveLimit=0
KillWait=30
MinJobAge=300
SlurmctldTimeout=120
SlurmdTimeout=300
Waittime=0
FastSchedule=1
SchedulerType=sched/backfill
SchedulerPort=7321
SelectType=select/linear
AccountingStorageEnforce=association
AccountingStorageHost=slurmdbd
AccountingStorageType=accounting_storage/slurmdbd
AccountingStoreJobComment=YES
ClusterName=cluster
JobCompType=jobcomp/linux
JobAcctGatherFrequency=30
JobAcctGatherType=jobacct_gather/none
SlurmctldDebug=3
SlurmctldLogFile=/var/log/slurm-llnl/slurmctld.log
SlurmdDebug=3
SlurmdLogFile=/var/log/slurm-llnl/slurmd.log
NodeName=slurmd CPUs=2 State=UNKNOWN
PartitionName=debug Nodes=slurmd Default=YES MaxTime=INFINITE State=UP
}}}

{{{/etc/slurm-llnl/slurmdbd.conf}}}:
{{{
AuthType=auth/munge
AuthInfo=/var/run/munge/munge.socket.2
DbdHost=localhost
DebugLevel=3
StorageHost=localhost
StorageLoc=slurm
StoragePass=shazaam
StorageType=accounting_storage/mysql
StorageUser=slurm
LogFile=/var/log/slurm-llnl/slurmdbd.log
PidFile=/var/run/slurm-llnl/slurmdbd.pid
SlurmUser=slurm
ArchiveDir=/var/log/slurm-llnl/

ArchiveEvents=yes
ArchiveJobs=yes
ArchiveResvs=yes
ArchiveSteps=yes
ArchiveSuspend=yes

PurgeEventAfter=1hour
PurgeJobAfter=1hour
PurgeResvAfter=1hour
PurgeStepAfter=1hour
PurgeSuspendAfter=1hour
}}}


On {{{slurmdbd}}} create a MySQL database called {{{slurm}}} with
write permission for user {{{slurm}}} with password {{{shazaam}}}:
{{{
CREATE DATABASE slurm;
GRANT ALL PRIVILEGES ON slurm.* TO 'slurm' IDENTIFIED BY 'shazaam';
}}}

With {{{sacctmgr}}} (package {{{slurm-client}}}) add a cluster, an account and a user:

{{{
sacctmgr -i add cluster cluster
sacctmgr -i add account oliva Cluster=cluster
sacctmgr -i add user oliva Account=oliva
}}}

Then run a couple of jobs as user {{{oliva}}} with {{{srun}}} or {{{sbatch}}}: you can
see them in the cluster history with {{{sacct}}}.

{{{
# nodes status
slurmctld# sinfo

# send job
slurmctld# srun -l /bin/hostname

# list jobs
slurmctld# sacct

# reset node (e.g. stuck in 'alloc' state)
slurmctld# scontrol update NodeName=slurmd State=down reason=x
slurmctld# scontrol update NodeName=slurmd State=resume
}}}

Given the settings of the {{{slurmdbd.conf}}} below, this job information
are purged at the beginning of the hour after the job has run and are
stored in two files called:

{{{
cluster_job_archive_2019-12-09T01:00:00_2019-12-09T01:59:59
cluster_step_archive_2019-12-09T01:00:00_2019-12-09T01:59:59
}}}

with the current date under {{{/var/log/slurm-llnl/}}}.

CVE-2019-12838 note: to reproduce, try to reload the files with the command:
{{{
sacctmgr archive load file=/var/log/slurm-llnl/...
}}}

See also https://slurm.schedmd.com/quickstart.html and https://slurm.schedmd.com/troubleshoot.html