perfSONAR User Q&A and Other Discussion

[Antoine Delvaux <>]

Hello Elicia,

The error messages you see in the logs seem to indicate that PostgreSQL is 
not running on your machine.  Can you try to start/restart it?  If you cannot 
have it running, it would be good to check the logs in /var/lib/pgsql/ for 
any error.

pscheduler requires postgresql-9.5 to run.

Can you confirm you are running on CentOS7?  Did you installed from the ISO 
image or from the bundle packages?

Thanks,

--                                                                --
Antoine Delvaux                                     Systems Engineer
Poznań Supercomputing & Network Center                 Skype: toninb
GÉANT project                                    Tel: +221.703368313
http://www.geant.org                  XMPP: 

PGP fingerprint:  DC65 0D8B 6938 9229 33C3  18CA 4EB6 09D3 A333 3378

> Le 16 oct. 2017 à 11:58, Elicia Heera 
> <>
>  a écrit :
> 
> Hi Everyone,
> 
> I need some help regarding the pScheduler server and some of the errors I 
> am getting and how to resolve them. I recently did a fresh install of 
> perfSONAR on a FIT-PC 3 device. When this device was deployed to site the 
> pScheduler process has been giving numerous errors including Internal error 
> on on local pScheduler server when I run pscheduler task idle --duration 
> PT2S.
> 
> Under the pscheduler log:
> Oct 16 13:33:38 localhost journal: safe_run/scheduler ERROR    Restarting
> Oct 16 13:33:38 localhost journal: safe_run/scheduler ERROR    Program 
> threw an exception after 0:00:00.001245
> Oct 16 13:33:38 localhost journal: safe_run/scheduler ERROR    Exception: 
> OperationalError: could not connect to server: Connection refused#012#011Is 
> the server running on host "127.0.0.1"$
> Oct 16 13:33:38 localhost journal: safe_run/scheduler ERROR    Waiting 
> 19.75 seconds before restarting
> Oct 16 13:33:38 localhost journal: safe_run/runner ERROR    Restarting
> Oct 16 13:33:38 localhost journal: safe_run/runner ERROR    Program threw 
> an exception after 0:00:00.001344
> Oct 16 13:33:38 localhost journal: safe_run/runner ERROR    Exception: 
> OperationalError: could not connect to server: Connection refused#012#011Is 
> the server running on host "127.0.0.1" an$
> Oct 16 13:33:38 localhost journal: safe_run/runner ERROR    Waiting 19.75 
> seconds before restarting
> Oct 16 13:33:38 localhost journal: safe_run/archiver ERROR    Restarting
> Oct 16 13:33:38 localhost journal: safe_run/archiver ERROR    Program threw 
> an exception after 0:00:00.001308
> Oct 16 13:33:38 localhost journal: safe_run/archiver ERROR    Exception: 
> OperationalError: could not connect to server: Connection refused#012#011Is 
> the server running on host "127.0.0.1" $
> Oct 16 13:33:38 localhost journal: safe_run/archiver ERROR    Waiting 19.75 
> seconds before restarting
> Oct 16 13:33:39 localhost journal: safe_run/ticker ERROR    Restarting
> Oct 16 13:33:39 localhost journal: safe_run/ticker ERROR    Program threw 
> an exception after 0:00:00.005828
> Oct 16 13:33:39 localhost journal: safe_run/ticker ERROR    Exception: 
> OperationalError: could not connect to server: Connection refused#012#011Is 
> the server running on host "127.0.0.1" an$
> Oct 16 13:33:39 localhost journal: safe_run/ticker ERROR    Waiting 19.75 
> seconds before restarting
> Oct 16 13:33:58 localhost journal: safe_run/scheduler ERROR    Restarting
> Oct 16 13:33:58 localhost journal: safe_run/scheduler ERROR    Program 
> threw an exception after 0:00:00.001213
> Oct 16 13:33:58 localhost journal: safe_run/scheduler ERROR    Exception: 
> OperationalError: could not connect to server: Connection refused#012#011Is 
> the server running on host "127.0.0.1"$
> Oct 16 13:33:58 localhost journal: safe_run/scheduler ERROR    Waiting 20.0 
> seconds before restarting
> Oct 16 13:33:58 localhost journal: safe_run/runner ERROR    Restarting
> Oct 16 13:33:58 localhost journal: safe_run/runner ERROR    Program threw 
> an exception after 0:00:00.001320
> Oct 16 13:33:58 localhost journal: safe_run/runner ERROR    Exception: 
> OperationalError: could not connect to server: Connection refused#012#011Is 
> the server running on host "127.0.0.1" an$
> Oct 16 13:33:58 localhost journal: safe_run/runner ERROR    Waiting 20.0 
> seconds before restarting
> Oct 16 13:33:58 localhost journal: safe_run/archiver ERROR    Restarting
> Oct 16 13:33:58 localhost journal: safe_run/archiver ERROR    Program threw 
> an exception after 0:00:00.001256
> Oct 16 13:33:58 localhost journal: safe_run/archiver ERROR    Exception: 
> OperationalError: could not connect to server: Connection refused#012#011Is 
> the server running on host "127.0.0.1" $
> Oct 16 13:33:58 localhost journal: safe_run/archiver ERROR    Waiting 20.0 
> seconds before restarting
> Oct 16 13:33:59 localhost journal: safe_run/ticker ERROR    Restarting
> Oct 16 13:33:59 localhost journal: safe_run/ticker ERROR    Program threw 
> an exception after 0:00:00.005256
> Oct 16 13:33:59 localhost journal: safe_run/ticker ERROR    Exception: 
> OperationalError: could not connect to server: Connection refused#012#011Is 
> the server running on host "127.0.0.1" an$
> Oct 16 13:33:59 localhost journal: safe_run/ticker ERROR    Waiting 20.0 
> seconds before restarting
> 
> I get these errors when checking the status of any of the pscheduler 
> services. All show active (running):
> pscheduler-runner.service - pScheduler server - runner
>    Loaded: loaded (/usr/lib/systemd/system/pscheduler-runner.service; 
> enabled; vendor preset: disabled)
>    Active: active (running) since Mon 2017-10-16 13:20:41 SAST; 16min ago
>  Main PID: 1254 (runner)
>    CGroup: /system.slice/pscheduler-runner.service
>            └─1254 /usr/bin/python /usr/libexec/pscheduler/daemons/runner 
> --daemon --pid-file /var/run/pscheduler-runner.pid --dsn 
> @/etc/pscheduler/database/database-dsn
> 
> Oct 16 13:36:02 localhost.localdomain runner[1254]: safe_run/runner ERROR   
>  Exception: OperationalError: could not connect to server: Connection 
> refused
>                                                             Is the server 
> running on host "127.0.0.1" and accepting
>                                                             TCP/IP 
> connections on port 5432?...
> Oct 16 13:36:02 localhost.localdomain runner[1254]: safe_run/runner ERROR   
>  Waiting 21.5 seconds before restarting
> Oct 16 13:36:23 localhost.localdomain runner[1254]: safe_run/runner ERROR   
>  Restarting
> Oct 16 13:36:23 localhost.localdomain runner[1254]: safe_run/runner ERROR   
>  Program threw an exception after 0:00:00.001386
> Oct 16 13:36:23 localhost.localdomain runner[1254]: safe_run/runner ERROR   
>  Exception: OperationalError: could not connect to server: Connection 
> refused
>                                                             Is the server 
> running on host "127.0.0.1" and accepting
>                                                             TCP/IP 
> connections on port 5432?...
> Oct 16 13:36:23 localhost.localdomain runner[1254]: safe_run/runner ERROR   
>  Waiting 21.75 seconds before restarting
> Oct 16 13:36:45 localhost.localdomain runner[1254]: safe_run/runner ERROR   
>  Restarting
> Oct 16 13:36:45 localhost.localdomain runner[1254]: safe_run/runner ERROR   
>  Program threw an exception after 0:00:00.000983
> Oct 16 13:36:45 localhost.localdomain runner[1254]: safe_run/runner ERROR   
>  Exception: OperationalError: could not connect to server: Connection 
> refused
>                                                             Is the server 
> running on host "127.0.0.1" and accepting
>                                                             TCP/IP 
> connections on port 5432?...
> Oct 16 13:36:45 localhost.localdomain runner[1254]: safe_run/runner ERROR   
>  Waiting 22.0 seconds before restarting
> 
> 
> I have tried reinstalling the pscheduler server and restarting all the 
> processes with no luck.
> 
> Any help would be appreciated.
> 
> Sincerly
> Elicia Heera
> Network Engineer
> 
> <SANReN Logo.PNG>
> ​