slurmctld: debug:  Log file re-opened
slurmctld: pidfile not locked, assuming no running daemon
slurmctld: slurmctld version 19.05.5 started on cluster tuc
slurmctld: debug3: Trying to load plugin /usr/lib/x86_64-linux-gnu/slurm-wlm/cred_munge.so
slurmctld: Munge credential signature plugin loaded
slurmctld: debug3: Success.
slurmctld: debug3: Trying to load plugin /usr/lib/x86_64-linux-gnu/slurm-wlm/auth_munge.so
slurmctld: debug:  Munge authentication plugin loaded
slurmctld: debug3: Success.
slurmctld: debug3: Trying to load plugin /usr/lib/x86_64-linux-gnu/slurm-wlm/select_cons_tres.so
slurmctld: select/cons_tres loaded with argument 4372
slurmctld: debug3: Success.
slurmctld: debug3: Trying to load plugin /usr/lib/x86_64-linux-gnu/slurm-wlm/select_linear.so
slurmctld: Linear node selection plugin loaded with argument 4372
slurmctld: debug3: Success.
slurmctld: debug3: Trying to load plugin /usr/lib/x86_64-linux-gnu/slurm-wlm/select_cray_aries.so
slurmctld: Cray/Aries node selection plugin loaded
slurmctld: debug3: Success.
slurmctld: debug3: Trying to load plugin /usr/lib/x86_64-linux-gnu/slurm-wlm/select_cons_res.so
slurmctld: Consumable Resources (CR) Node Selection plugin loaded with argument 4372
slurmctld: debug3: Success.
slurmctld: debug3: Trying to load plugin /usr/lib/x86_64-linux-gnu/slurm-wlm/gres_gpu.so
slurmctld: debug:  init: Gres GPU plugin loaded
slurmctld: debug3: Success.
slurmctld: debug3: Trying to load plugin /usr/lib/x86_64-linux-gnu/slurm-wlm/preempt_none.so
slurmctld: preempt/none loaded
slurmctld: debug3: Success.
slurmctld: debug3: Trying to load plugin /usr/lib/x86_64-linux-gnu/slurm-wlm/checkpoint_none.so
slurmctld: debug3: Success.
slurmctld: debug:  Checkpoint plugin loaded: checkpoint/none
slurmctld: debug3: Trying to load plugin /usr/lib/x86_64-linux-gnu/slurm-wlm/acct_gather_energy_none.so
slurmctld: debug:  AcctGatherEnergy NONE plugin loaded
slurmctld: debug3: Success.
slurmctld: debug3: Trying to load plugin /usr/lib/x86_64-linux-gnu/slurm-wlm/acct_gather_profile_none.so
slurmctld: debug:  AcctGatherProfile NONE plugin loaded
slurmctld: debug3: Success.
slurmctld: debug3: Trying to load plugin /usr/lib/x86_64-linux-gnu/slurm-wlm/acct_gather_interconnect_none.so
slurmctld: debug:  AcctGatherInterconnect NONE plugin loaded
slurmctld: debug3: Success.
slurmctld: debug3: Trying to load plugin /usr/lib/x86_64-linux-gnu/slurm-wlm/acct_gather_filesystem_none.so
slurmctld: debug:  AcctGatherFilesystem NONE plugin loaded
slurmctld: debug3: Success.
slurmctld: debug2: No acct_gather.conf file (/etc/slurm-llnl/acct_gather.conf)
slurmctld: debug3: Trying to load plugin /usr/lib/x86_64-linux-gnu/slurm-wlm/jobacct_gather_cgroup.so
slurmctld: debug:  Job accounting gather cgroup plugin loaded
slurmctld: debug3: Success.
slurmctld: debug3: Trying to load plugin /usr/lib/x86_64-linux-gnu/slurm-wlm/ext_sensors_none.so
slurmctld: ExtSensors NONE plugin loaded
slurmctld: debug3: Success.
slurmctld: debug3: Trying to load plugin /usr/lib/x86_64-linux-gnu/slurm-wlm/switch_none.so
slurmctld: debug:  switch NONE plugin loaded
slurmctld: debug3: Success.
slurmctld: debug:  power_save module disabled, SuspendTime < 0
slurmctld: debug3: Trying to load plugin /usr/lib/x86_64-linux-gnu/slurm-wlm/accounting_storage_slurmdbd.so
slurmctld: Accounting storage SLURMDBD plugin loaded
slurmctld: debug3: Success.
slurmctld: error: Persistent Conn: read: No error
slurmctld: error: Persistent Conn: only read 105 of 1761607680 bytes
slurmctld: error: Persistent Conn: read: No error
slurmctld: error: Persistent Conn: only read 105 of 1761607680 bytes
slurmctld: error: Persistent Conn: read: No error
slurmctld: error: Persistent Conn: only read 104 of 255 bytes
slurmctld: error: Persistent Conn: read: No error
slurmctld: error: Persistent Conn: only read 105 of 1761607680 bytes
slurmctld: error: Persistent Conn: read: No error
slurmctld: error: Persistent Conn: only read 105 of 1761607680 bytes
slurmctld: error: persistent connection experienced an error
slurmctld: error: Persistent Conn: only read 0 of 65385 bytes
slurmctld: error: Persistent Conn: read: No error
slurmctld: error: Persistent Conn: only read 105 of 1761607680 bytes
slurmctld: error: Persistent Conn: read: No error
slurmctld: error: Persistent Conn: only read 105 of 1761607680 bytes
slurmctld: error: Persistent Conn: read: No error
slurmctld: error: Persistent Conn: only read 104 of 255 bytes
slurmctld: error: persistent connection experienced an error
slurmctld: error: Persistent Conn: only read 105 of 1761607680 bytes
slurmctld: error: Persistent Conn: read: No error
slurmctld: error: Persistent Conn: only read 105 of 1761607680 bytes
slurmctld: error: persistent connection experienced an error
slurmctld: error: Persistent Conn: read: No error
slurmctld: error: Persistent Conn: only read 105 of 1761607680 bytes
slurmctld: error: persistent connection experienced an error
slurmctld: error: Persistent Conn: only read 0 of 65385 bytes
slurmctld: error: Persistent Conn: read: No error
slurmctld: error: Persistent Conn: only read 105 of 1761607680 bytes
slurmctld: debug:  slurm_send_timeout: Socket POLLERR
slurmctld: debug3: slurm_msg_sendto: peer has disappeared for msg_type=6500
slurmctld: error: slurm_persist_conn_open: failed to send persistent connection init message to se01.grid.tuc.gr:3306
slurmctld: error: slurm_persist_conn_open: No response to persist_init
slurmctld: error: slurmdbd: Sending PersistInit msg: Transport endpoint is not connected
slurmctld: debug4: slurmdbd: There is no state save file to open by name /var/spool/slurm/ctld/dbd.messages
slurmctld: debug:  Association database appears down, reading from state file.
slurmctld: debug:  create_mmap_buf: Failed to mmap file `/var/spool/slurm/ctld/last_tres`, No such device
slurmctld: debug2: No last_tres file (/var/spool/slurm/ctld/last_tres) to recover
slurmctld: debug:  create_mmap_buf: Failed to mmap file `/var/spool/slurm/ctld/assoc_mgr_state`, No such device
slurmctld: debug2: No association state file (/var/spool/slurm/ctld/assoc_mgr_state) to recover
slurmctld: fatal: You are running with a database but for some reason we have no TRES from it.  This should only happen if the database is down and you don't have any state files.