ERROR: Backend server is not running!

Moeketsi Maphoi mmaphoi at nic.ls
Fri Nov 2 13:42:16 CET 2018


If the backend server was refusing to run at all, could it have something to do with CORBA technology?

I have that problem with fred-adifd service on a test server I made recently. Restarting does't seem to do the trick, it just can't start while other FRED services are running. 

Regards,
Moeketsi

-----Original Message-----
From: Jaromir Talir <jaromir.talir at nic.cz> 
Sent: Thursday, November 1, 2018 1:39 PM
To: Moeketsi Maphoi <mmaphoi at nic.ls>
Cc: fred-users at lists.nic.cz
Subject: Re: ERROR: Backend server is not running!

This is hard to say. The communication mediated through CORBA technology is quite complex and the glitch could be in many components.
Maybe you hit some bug in this particular service triggered by high uptime. You may try to read logs for fred-adifd if you will see something from last time this service responded to CORBA calls.

Regards,
Jaromir 

On Thu, 2018-11-01 at 07:29 +0200, Moeketsi Maphoi wrote:
> I had to wait to wait till off peak to restart the services, just to 
> be safe.
> 
> It seems that’s all it needed, the error is cleared and daphne works 
> fine now.
> 
> I wonder what could've caused the communication cut between the adifd 
> and webadmin services.
> 
> Thanks,
> Moeketsi Maphoi
> 
> -----Original Message-----
> From: Moeketsi Maphoi <mmaphoi at nic.ls>
> Sent: Wednesday, October 31, 2018 4:31 PM
> To: 'Jaromir Talir' <jaromir.talir at nic.cz>
> Cc: 'fred-users at lists.nic.cz' <fred-users at lists.nic.cz>
> Subject: RE: ERROR: Backend server is not running!
> 
> Okay I shall restart the services and report back.
> 
> The set up is on a single server.
> 
> Regards,
> Moeketsi Maphoi
> 
> -----Original Message-----
> From: Jaromir Talir <jaromir.talir at nic.cz>
> Sent: Wednesday, October 31, 2018 4:31 PM
> To: Moeketsi Maphoi <mmaphoi at nic.ls>
> Cc: fred-users at lists.nic.cz
> Subject: Re: ERROR: Backend server is not running!
> 
> OK, in any case I'd suggest to restart both backend service (fred-
> adifd) and also frontend service (fred-webadmin). If this doesn't help 
> we will need to investigate what is preventing the communication of 
> these two services. Is it running on single server or different 
> servers?
> 
> Regards,
> Jaromir
> 
> On Wed, 2018-10-31 at 16:09 +0200, Moeketsi Maphoi wrote:
> > The service seems to be running, the output is shown below
> > 
> > $ service fred-adifd status
> > ● fred-adifd.service - FRED administration interface daemon
> >    Loaded: loaded (/lib/systemd/system/fred-adifd.service;
> > disabled;
> > vendor preset: enabled)
> >    Active: active (running) since Wed 2018-09-05 14:03:18 SAST; 1 
> > months 25 days ago  Main PID: 4288 (fred-adifd)
> >     Tasks: 4
> >    Memory: 9.6M
> >       CPU: 39.656s
> >    CGroup: /system.slice/fred-adifd.service
> >            └─4288 /usr/sbin/fred-adifd -ORBendPoint giop:tcp::2222 
> > -ORBnativeCharCodeSet UTF-8 --config /etc/fred/fred-adifd.conf
> > 
> > Warning: Journal has been rotated since unit was started. Log output 
> > is incomplete or unavailable.
> > 
> > Regards,
> > Moeketsi Maphoi
> > 
> > -----Original Message-----
> > From: Jaromir Talir <jaromir.talir at nic.cz>
> > Sent: Wednesday, October 31, 2018 4:04 PM
> > To: Moeketsi Maphoi <mmaphoi at nic.ls>; fred-users at lists.nic.cz
> > Subject: Re: ERROR: Backend server is not running!
> > 
> > Hi Moeketsi,
> > can you verify once again that fred-adifd service is running?
> > 
> > Regards,
> > Jaromir
> > 
> > On Wed, 2018-10-31 at 15:17 +0200, Moeketsi Maphoi wrote:
> > > Greetings,
> > >  
> > > I am experiencing a bit of a problem here on daphne, out of 
> > > nowhere.
> > > The FRED services have never stopped running for two months now 
> > > but daphne puts out the following message after hitting login.
> > >  
> > > Error:
> > > Error: Backend server is not running!
> > > Traceback (most recent call last):
> > >   File "/usr/lib/python2.7/dist-
> > > packages/fred_webadmin/exposed.py",
> > > line 25, in _wrapper
> > >     return view_func(*args, **kwd)
> > >   File "/usr/lib/python2.7/dist-
> > > packages/fred_webadmin/controller/adif.py", line 241, in login
> > >     self._authenticate(form, admin)
> > >   File "/usr/lib/python2.7/dist-
> > > packages/fred_webadmin/controller/adif.py", line 175, in 
> > > _authenticate
> > >     auth.authenticate_user(admin, login, password)
> > >   File "/usr/lib/python2.7/dist-
> > > packages/fred_webadmin/auth/corba_auth.py", line 11, in 
> > > authenticate_user
> > >     admin.authenticateUser(recoder.u2c(username),
> > > recoder.u2c(password))
> > >   File "/tmp/tmprSxSnq", line 6903, in authenticateUser
> > > TRANSIENT: CORBA.TRANSIENT(omniORB.TRANSIENT_ConnectFailed,
> > > CORBA.COMPLETED_NO)
> > >  
> > > All FRED services are still running. The logs don’t show anything 
> > > conclusive, what could be happening?
> > >  
> > > Regards,
> > > Moeketsi Maphoi
> > > Systems Engineer: LsNIC
> > > 
> > >  
> > > _______________________________________________
> > > fred-users mailing list
> > > fred-users at lists.nic.cz
> > > https://lists.nic.cz/cgi-bin/mailman/listinfo/fred-users
> > 
> > --
> > Jaromir Talir
> > Technicky partner / Technical Fellow
> > -------------------------------------------
> > CZ.NIC, z.s.p.o.  --    .cz domain registry
> > Milesovska 5, 130 00 Praha 3, Czech Republic 
> > mailto:jaromir.talir at nic.cz  http://nic.cz/ sip:jaromir.talir at nic.cz
> > tel:+420.222745107
> > mob:+420.739632712       fax:+420.222745112
> > -------------------------------------------
> > 
> 
> --
> Jaromir Talir
> Technicky partner / Technical Fellow
> -------------------------------------------
> CZ.NIC, z.s.p.o.  --    .cz domain registry
> Milesovska 5, 130 00 Praha 3, Czech Republic 
> mailto:jaromir.talir at nic.cz  http://nic.cz/ sip:jaromir.talir at nic.cz
> tel:+420.222745107
> mob:+420.739632712       fax:+420.222745112
> -------------------------------------------
> 
--
Jaromir Talir
Technicky partner / Technical Fellow
-------------------------------------------
CZ.NIC, z.s.p.o.  --    .cz domain registry
Milesovska 5, 130 00 Praha 3, Czech Republic mailto:jaromir.talir at nic.cz  http://nic.cz/ sip:jaromir.talir at nic.cz tel:+420.222745107
mob:+420.739632712       fax:+420.222745112
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