torque service exits with status 3 on master node

Question

Hi,  
I noticed strange behavior of my cluster. I am using torque on centos 8. The cluster was working fine for over 2 months and all of the sudden the compute nodes stopped running queued jobs. I tried restarting the compute fleet but this didn't help and I found out that the torque service on the master node had failed and I am not able to restart it (see listing below). What can I do to repair my cluster?  
I am using parallelcluster 2.10 with a custom AMI and maximum 12 nodes with 8 processors on each (c5.4xlarge without hyperthreading).  
\[code]  
\[centos@ip-172-31-24-41 ~]$ sudo service --status-all  
Usage: /etc/init.d/ec2blkdev {start|stop}  
\u25cf munge.service - MUNGE authentication service  
   Loaded: loaded (/usr/lib/systemd/system/munge.service; enabled; vendor preset: disabled)  
   Active: active (running) since Tue 2020-12-01 22:03:49 UTC; 2 months 17 days ago  
     Docs: man:munged(8)  
 Main PID: 5974 (munged)  
    Tasks: 4 (limit: 47239)  
   Memory: 3.5M  
   CGroup: /system.slice/munge.service  
           \u2514\u25005974 /usr/sbin/munged  
\u25cf pbs_sched.service - SYSV: PBS is a batch versatile batch system for SMPs and clusters  
   Loaded: loaded (/etc/rc.d/init.d/pbs_sched; generated)  
   Active: active (exited) since Tue 2020-12-01 22:04:05 UTC; 2 months 17 days ago  
     Docs: man:systemd-sysv-generator(8)  
    Tasks: 0 (limit: 47239)  
   Memory: 0B  
   CGroup: /system.slice/pbs_sched.service  
\u25cf pbs_server.service - TORQUE pbs_server daemon  
   Loaded: loaded (/usr/lib/systemd/system/pbs_server.service; enabled; vendor preset: disabled)  
   Active: failed (Result: exit-code) since Tue 2020-12-01 22:04:04 UTC; 2 months 17 days ago  
 Main PID: 6173 (code=exited, status=3)  
jobwatcher                       RUNNING   pid 6467, uptime 78 days, 17:53:12  
sqswatcher                       RUNNING   pid 6468, uptime 78 days, 17:53:11  
\u25cf trqauthd.service - TORQUE trqauthd daemon  
   Loaded: loaded (/usr/lib/systemd/system/trqauthd.service; enabled; vendor preset: disabled)  
   Active: active (running) since Tue 2020-12-01 22:03:49 UTC; 2 months 17 days ago  
 Main PID: 5900 (trqauthd)  
    Tasks: 1 (limit: 47239)  
   Memory: 3.1M  
   CGroup: /system.slice/trqauthd.service  
           \u2514\u25005900 /opt/torque/sbin/trqauthd -F  
\[centos@ip-172-31-24-41 ~]$ sudo service pbs_server restart  
Restarting pbs_server (via systemctl):                     \[  OK  ]  
\[centos@ip-172-31-24-41 ~]$ sudo service --status-all  
Usage: /etc/init.d/ec2blkdev {start|stop}  
\u25cf munge.service - MUNGE authentication service  
   Loaded: loaded (/usr/lib/systemd/system/munge.service; enabled; vendor preset: disabled)  
   Active: active (running) since Tue 2020-12-01 22:03:49 UTC; 2 months 17 days ago  
     Docs: man:munged(8)  
 Main PID: 5974 (munged)  
    Tasks: 4 (limit: 47239)  
   Memory: 3.5M  
   CGroup: /system.slice/munge.service  
           \u2514\u25005974 /usr/sbin/munged  
\u25cf pbs_sched.service - SYSV: PBS is a batch versatile batch system for SMPs and clusters  
   Loaded: loaded (/etc/rc.d/init.d/pbs_sched; generated)  
   Active: active (exited) since Tue 2020-12-01 22:04:05 UTC; 2 months 17 days ago  
     Docs: man:systemd-sysv-generator(8)  
    Tasks: 0 (limit: 47239)  
   Memory: 0B  
   CGroup: /system.slice/pbs_sched.service  
\u25cf pbs_server.service - TORQUE pbs_server daemon  
   Loaded: loaded (/usr/lib/systemd/system/pbs_server.service; enabled; vendor preset: disabled)  
   Active: failed (Result: exit-code) since Thu 2021-02-18 16:18:48 UTC; 7s ago  
  Process: 2884631 ExecStart=/opt/torque/sbin/pbs_server -F -d $PBS_HOME $PBS_ARGS (code=exited, status=3)  
 Main PID: 2884631 (code=exited, status=3)  
  
Feb 18 16:18:48 ip-172-31-24-41 systemd\[1]: Started TORQUE pbs_server daemon.  
Feb 18 16:18:48 ip-172-31-24-41 pbs_server\[2884631]: pbs_server port already bound: Address already in use  
Feb 18 16:18:48 ip-172-31-24-41 systemd\[1]: pbs_server.service: Main process exited, code=exited, status=3/NOTIMPLEMENTED  
Feb 18 16:18:48 ip-172-31-24-41 systemd\[1]: pbs_server.service: Failed with result 'exit-code'.  
jobwatcher                       RUNNING   pid 6467, uptime 78 days, 18:14:44  
sqswatcher                       RUNNING   pid 6468, uptime 78 days, 18:14:43  
\u25cf trqauthd.service - TORQUE trqauthd daemon  
   Loaded: loaded (/usr/lib/systemd/system/trqauthd.service; enabled; vendor preset: disabled)  
   Active: active (running) since Tue 2020-12-01 22:03:49 UTC; 2 months 17 days ago  
 Main PID: 5900 (trqauthd)  
    Tasks: 1 (limit: 47239)  
   Memory: 3.1M  
   CGroup: /system.slice/trqauthd.service  
           \u2514\u25005900 /opt/torque/sbin/trqauthd -F  
  
\[/code]

Answer

Hi @mfolusiak  
  
It's not clear to me why the torque service crashed.  
We can find some information in torque logs:  
\[code]  
/var/spool/torque/client_logs/*   
/var/spool/torque/server_logs/*  
\[/code]  
  
Anyway by reading the log message the pbs server cannot start because the port is already in use by another process:  
\[code]  
pbs_server port already bound: Address already in use  
\[/code]  
  
I'd suggest to stop all the torque related daemons:  
\[code]  
/etc/init.d/trqauthd stop  
/etc/init.d/pbs_server stop  
/etc/init.d/pbs_sched stop  
\[/code]  
  
Be sure there are no running processes and eventually kill them  
\[code]  
ps aux | grep trq  
ps aux | grep pbs  
\[/code]  
  
Then restart all the daemons:  
\[code]  
/etc/init.d/trqauthd start  
/etc/init.d/pbs_server start  
/etc/init.d/pbs_sched start  
\[/code]  
  
Let us know if it helps,  
  
Enrico

Answer

Thank you for help. Yes, restarting the service and the compute fleet had helped.

torque service exits with status 3 on master node

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