Univention Bugzilla – Bug 32050
DNS timeout when opening school installer prevents installing UCS@school
Last modified: 2015-02-27 15:18:33 CET
Ticket#2013072321001826 If the DNS-Lookup for the DC-Master fails, the UMC configuration wizard reports: --- UCS@school can only be installed on the system roles master domain controller, backup domain controller, or slave domain controller. --- ==> /var/log/univention/management-console-module-schoolinstaller.log <== 24.07.13 11:55:33.165 MODULE ( PROCESS ) : Execution of command 'schoolinstaller/query' has failed: Traceback (most recent call last): File "/usr/lib/pymodules/python2.6/univention/management/console/modules/__init__.py", line 204, in execute func( request ) File "/usr/lib/pymodules/python2.6/univention/management/console/modules/decorators.py", line 282, in _response result = _multi_response(self, request) File "/usr/lib/pymodules/python2.6/univention/management/console/modules/decorators.py", line 384, in _response for res in function(self, iterator, *nones): File "/usr/lib/pymodules/python2.6/univention/management/console/modules/decorators.py", line 266, in _fake_func yield function(self, *args) File "/usr/lib/pymodules/python2.6/univention/management/console/modules/schoolinstaller/__init__.py", line 468, in query 'guessed_master': get_master_dns_lookup(), File "/usr/lib/pymodules/python2.6/univention/management/console/modules/schoolinstaller/__init__.py", line 152, in get_master_dns_lookup result = dns.resolver.query(query, 'SRV') File "/usr/lib/pymodules/python2.6/dns/resolver.py", line 732, in query return get_default_resolver().query(qname, rdtype, rdclass, tcp, source) File "/usr/lib/pymodules/python2.6/dns/resolver.py", line 608, in query timeout = self._compute_timeout(start) File "/usr/lib/pymodules/python2.6/dns/resolver.py", line 541, in _compute_timeout raise Timeout Timeout ==> /var/log/univention/management-console-web-server.log <== 24.07.13 11:55:33.167 MAIN ( PROCESS ) : CPCommand (172.25.10.250:38457) response status code: 591 24.07.13 11:55:33.168 MAIN ( PROCESS ) : CPCommand (172.25.10.250:38457) response message: Execution of command 'schoolinstaller/query' has failed: Traceback (most recent call last): File "/usr/lib/pymodules/python2.6/univention/management/console/modules/__init__.py", line 204, in execute func( request ) File "/usr/lib/pymodules/python2.6/univention/management/console/modules/decorators.py", line 282, in _response result = _multi_response(self, request) File "/usr/lib/pymodules/python2.6/univention/management/console/modules/decorators.py", line 384, in _response for res in function(self, iterator, *nones): File "/usr/lib/pymodules/python2.6/univention/management/console/modules/decorators.py", line 266, in _fake_func yield function(self, *args) File "/usr/lib/pymodules/python2.6/univention/management/console/modules/schoolinstaller/__init__.py", line 468, in query 'guessed_master': get_master_dns_lookup(), File "/usr/lib/pymodules/python2.6/univention/management/console/modules/schoolinstaller/__init__.py", line 152, in get_master_dns_lookup result = dns.resolver.query(query, 'SRV') File "/usr/lib/pymodules/python2.6/dns/resolver.py", line 732, in query return get_default_resolver().query(qname, rdtype, rdclass, tcp, source) File "/usr/lib/pymodules/python2.6/dns/resolver.py", line 608, in query timeout = self._compute_timeout(start) File "/usr/lib/pymodules/python2.6/dns/resolver.py", line 541, in _compute_timeout raise Timeout Timeout 24.07.13 11:55:33.168 MAIN ( PROCESS ) : CPCommand (172.25.10.250:38457) response result: None
(In reply to Janis Meybohm from comment #0) > Ticket#2013072321001826 > > If the DNS-Lookup for the DC-Master fails, the UMC configuration wizard > reports: > > --- > UCS@school can only be installed on the system roles master domain > controller, backup domain controller, or slave domain controller. > --- Well, I doubt that. If a traceback occurs it will be displayed in the frontend. The above error message could come from another request. Nevertheless, we received a similar traceback from the same code path: Die Ausführung des Kommandos schoolinstaller/query ist fehlgeschlagen: Traceback (most recent call last): File "/usr/lib/pymodules/python2.6/univention/management/console/modules/__init__.py", line 204, in execute func( request ) File "/usr/lib/pymodules/python2.6/univention/management/console/modules/decorators.py", line 305, in _response result = _multi_response(self, request) File "/usr/lib/pymodules/python2.6/univention/management/console/modules/decorators.py", line 432, in _response for res in function(self, iterator, *nones): File "/usr/lib/pymodules/python2.6/univention/management/console/modules/decorators.py", line 271, in _fake_func yield function(self, *args) File "/usr/lib/pymodules/python2.6/univention/management/console/modules/schoolinstaller/__init__.py", line 480, in query 'guessed_master': get_master_dns_lookup(), File "/usr/lib/pymodules/python2.6/univention/management/console/modules/schoolinstaller/__init__.py", line 154, in get_master_dns_lookup result = dns.resolver.query(query, 'SRV') File "/usr/lib/pymodules/python2.6/dns/resolver.py", line 732, in query return get_default_resolver().query(qname, rdtype, rdclass, tcp, source) File "/usr/lib/pymodules/python2.6/dns/resolver.py", line 672, in query answer = Answer(qname, rdtype, rdclass, response) File "/usr/lib/pymodules/python2.6/dns/resolver.py", line 121, in __init__ raise NoAnswer NoAnswer
*** Bug 35869 has been marked as a duplicate of this bug. ***
(In reply to Florian Best from comment #2) > *** Bug 35869 has been marked as a duplicate of this bug. *** Using TM from that bug. Received again 3.2-3 errata241 (Borgfeld)
All DNS related exceptions are now catched. The timeout of a DNS query has been reduced to 3 seconds to not block the module loading. Fix: svn r57788
merged to UCS@school 3.2
OK: debian changelog entry OK: XML changelog entry OK: package is built OK: code change ucs-school-umc-installer 2.0.20-1.71.201502251256
UCS@school 3.2 R2 v3 has been released: http://docs.univention.de/release-notes-ucsschool-3.2R2v3-de.html If this error occurs again, please use "Clone This Bug".