Bug 37036 - Traceback: "Connection reset by peer" on network reconfiguration not handled
Traceback: "Connection reset by peer" on network reconfiguration not handled
Status: CLOSED FIXED
Product: UCS
Classification: Unclassified
Component: UMC (Generic)
UCS 4.0
Other Linux
: P5 normal (vote)
: UCS 4.0-0-errata
Assigned To: Florian Best
Sönke Schwardt-Krummrich
:
Depends on: 32818 36561 37167
Blocks: 28670 33091
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Reported: 2014-11-26 10:49 CET by Florian Best
Modified: 2014-12-04 12:21 CET (History)
8 users (show)

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Description Florian Best univentionstaff 2014-11-26 10:49:52 CET
4.0
+++ This bug was initially created as a clone of Bug #36561 +++

The fix had a side effect (socket is defined twice):

08.11.14 16:54:44.041  MODULE      ( ERROR   ) : Traceback (most recent call last):
  File "/usr/sbin/univention-management-console-module", line 119, in <module>
    notifier.loop()
  File "/usr/lib/pymodules/python2.7/notifier/nf_generic.py", line 284, in loop
    step()
  File "/usr/lib/pymodules/python2.7/notifier/nf_generic.py", line 271, in step
    not __sockets[ cond ][ fd ]( sock_obj ):
  File "/usr/lib/pymodules/python2.7/univention/management/console/protocol/modserver.py", line 151, in _recv
    except socket.error, ex:
AttributeError: '_socketobject' object has no attribute 'error'


+++ This bug was initially created as a clone of Bug #32818 +++

# tail -f /var/log/univention/management-console-module-setup.log
08.10.13 11:23:27.939  PROTOCOL    ( INFO    ) : Sending UMCP RESPONSE 138122420793716-1
08.10.13 11:23:28.027  MODULE      ( ERROR   ) : Traceback (most recent call last):
  File "/usr/sbin/univention-management-console-module", line 112, in <module>
    notifier.loop()
  File "/usr/lib/pymodules/python2.6/notifier/nf_generic.py", line 284, in loop
    step()
  File "/usr/lib/pymodules/python2.6/notifier/nf_generic.py", line 271, in step
    not __sockets[ cond ][ fd ]( sock_obj ):
  File "/usr/lib/pymodules/python2.6/univention/management/console/protocol/modserver.py", line 129,
 in _recv
    data = socket.recv( RECV_BUFFER_SIZE )
error: [Errno 104] Connection reset by peer

# tail /var/log/univention/management-console-server.log
08.10.13 11:23:26.539  SSL         ( WARN    ) : SSL error in _receive: [('SSL routines', 'SSL23_READ', 'ssl handsha
08.10.13 11:23:27.936  DEBUG_INIT
08.10.13 11:23:27.936  MAIN        ( PROCESS ) : Stopping UMC server ...
08.10.13 11:23:27.937  MAIN        ( WARN    ) : Shutting down all open connections
08.10.13 11:23:27.947  MAIN        ( PROCESS ) : Starting UMC server ...
08.10.13 11:23:28.266  MAIN        ( PROCESS ) : Server started

# tail /var/log/univention/management-console-web-server.log
08.10.13 11:14:06.499  MAIN        ( PROCESS ) : SessionClient(0x2b88390): _authenticated: success=True  status=200  message=OK, operation successful
08.10.13 11:23:28.124  MAIN        ( PROCESS ) : UMCP_Dispatcher: check_queue: invalid session: sessionid='47bf040b-e94b-4291-8ca1-33c1a0702eb8'
08.10.13 11:23:28.124  MAIN        ( PROCESS ) : CPCommand (192.168.0.191:60232) response status code: 401
08.10.13 11:23:28.124  MAIN        ( PROCESS ) : CPCommand (192.168.0.191:60232) response message: None
08.10.13 11:23:28.124  MAIN        ( PROCESS ) : CPCommand (192.168.0.191:60232) response result: None
08.10.13 11:23:28.225  MAIN        ( WARN    ) : SessionClient(0x2b88a50): connection to UMC server failed
08.10.13 11:23:28.225  MAIN        ( PROCESS ) : Failed to create UMC connection: Connection failed
08.10.13 11:23:28.225  MAIN        ( PROCESS ) : CPRoot/auth: username: None, status code: 401
08.10.13 11:23:28.341  DEBUG_INIT
08.10.13 11:23:28.341  MAIN        ( PROCESS ) : Stopping UMC web server ...
08.10.13 11:23:28.343  MAIN        ( PROCESS ) : The UMC web server is still running. Will wait for 5 seconds
08.10.13 11:23:28.844  MAIN        ( PROCESS ) : Starting UMC web server ...

Browser is stuck in
  Generating SSL certificate
  93%
Comment 1 Florian Best univentionstaff 2014-11-26 10:51:42 CET
adjusted bug number in YAML file.
Comment 2 Sönke Schwardt-Krummrich univentionstaff 2014-11-26 12:26:58 CET
Was able to reproduce the traceback without the fix on a UCS 4.0-0 e0 system:
- log in into UMC
- open app center module
- pkill -f univention-management-console-server
→ traceback is printed into management-console-module-appcenter.log

Not reproducible if the errata package has been installed:
25.11.14 15:06:53.547  DEBUG_INIT
25.11.14 15:06:54.111  MODULE      ( PROCESS ) : Downloading "https://appcenter.software-univention.de/meta-inf/4.0/index.json.gz"...
25.11.14 15:06:54.213  MODULE      ( PROCESS ) : 0 file(s) are new
25.11.14 15:06:54.352  MODULE      ( PROCESS ) : Found hosts: ['master40']
25.11.14 15:06:54.365  MODULE      ( PROCESS ) : Found hosts: ['backup41']
25.11.14 15:06:54.377  MODULE      ( PROCESS ) : Found hosts: ['slave42']
25.11.14 15:06:54.390  MODULE      ( PROCESS ) : Found hosts: ['member43']
25.11.14 15:07:02.620  MODULE      ( ERROR   ) : Failed connection: ECONNRESET
25.11.14 15:07:02.620  MAIN        ( WARN    ) : Shutting down all open connections

OK: code change
OK: functionality
OK: YAML file
Comment 3 Moritz Muehlenhoff univentionstaff 2014-12-04 12:21:02 CET
http://errata.univention.de/ucs/4.0/3.html