Bug 37668 - LDAP inconsistency/UDM traceback if network object gets removed
LDAP inconsistency/UDM traceback if network object gets removed
Product: UCS@school
Classification: Unclassified
Component: UMC - Wizards
UCS@school 4.0
Other Linux
: P5 normal (vote)
: UCS@school 4.0 Errata
Assigned To: Florian Best
Sönke Schwardt-Krummrich
Depends on: 35099
Blocks: 37377 37769
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Reported: 2015-02-02 10:13 CET by Florian Best
Modified: 2015-11-16 08:49 CET (History)
8 users (show)

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Description Florian Best univentionstaff 2015-02-02 10:13:46 CET
This error is now handled in UDM so that this cannot happen in future anymore.
But if there are existing broken systems they are still unable to use the UCS@school wizards. We should also handle this in UCS@school directly.

Or provide something to clean up the ldap for dead references.

(In reply to Dirk Wiesenthal from Bug #35099 comment #1)
> Happens when (auto) assigning a network object to a computer and then
> manually deleting this network.
> Seems that the DN is still present in the computer object and points to
> nowhere, hence the error message.
> Could be handled in the school lib, should be handled in UDM

+++ This bug was initially created as a clone of Bug #35099 +++

We received the following traceback on a UCS@school 3.2R2 UCS 3.2-2 errata121 (Borgfeld).
We had similar tracebacks before due to missing objects/containers in the OU structure.

Die Ausführung des Kommandos schoolwizards/computers/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/ucsschool/lib/schoolldap.py", line 204, in
    return func( *args, **kwargs )
line 118, in _decorated
    ret = func(self, request, *a, **kw)
line 269, in get_computers
    return self._get_all(computer_class, school, request.options.get('filter'),
line 246, in _get_all
    objs.extend(klass.get_all(lo, school.name, filter_str=filter_str, easy_filter=True))
  File "/usr/lib/pymodules/python2.6/ucsschool/lib/models/base.py", line 652, in get_all
    obj = cls.from_udm_obj(udm_obj, school, lo)
  File "/usr/lib/pymodules/python2.6/ucsschool/lib/models/computer.py", line 258, in
    obj = super(SchoolComputer, cls).from_udm_obj(udm_obj, school, lo)
  File "/usr/lib/pymodules/python2.6/ucsschool/lib/models/base.py", line 682, in
    return klass.from_udm_obj(udm_obj, school, lo)
  File "/usr/lib/pymodules/python2.6/ucsschool/lib/models/computer.py", line 270, in
    netmask = Network.get_netmask(network_dn, school, lo)
  File "/usr/lib/pymodules/python2.6/ucsschool/lib/models/network.py", line 108, in
    network = cls.from_dn(dn, school, lo)
  File "/usr/lib/pymodules/python2.6/ucsschool/lib/models/base.py", line 735, in from_dn
    udm_obj = udm_modules.lookup(cls._meta.udm_module, None, lo,
filter=cls._meta.udm_filter, base=dn, scope='base', superordinate=superordinate)[0]
  File "/usr/lib/pymodules/python2.6/univention/admin/modules.py", line 801, in lookup
    tmpres=module.lookup(co, lo, filter, base=base, superordinate=superordinate,
scope=scope, unique=unique, required=required, timeout=timeout, sizelimit=sizelimit)
  File "/usr/lib/pymodules/python2.6/univention/admin/handlers/networks/network.py", line
332, in lookup
    for dn, attrs in lo.search(unicode(filter), base, scope, [], unique, required,
timeout, sizelimit):
  File "/usr/lib/pymodules/python2.6/univention/admin/uldap.py", line 347, in search
    raise univention.admin.uexceptions.noObject, _err2str(msg)
noObject: No such object
Comment 1 Florian Best univentionstaff 2015-02-05 10:37:28 CET
The noObject exception is now also handled in the function which tries to get the netmask of the network. If the network does not exists a empty value for the netmask is displayed in the module. Saving the object one time again will fix also the univentionNetworkLink reference.

Fix: svn r57789
Comment 2 Florian Best univentionstaff 2015-02-10 13:46:11 CET
merged to UCS@school 3.2
Comment 3 Sönke Schwardt-Krummrich univentionstaff 2015-02-18 17:11:59 CET
OK: no broken references at computer objects with current errata
OK: no traceback if module is opened and objects with broken references exist
OK: debian changelog entry
OK: XML changelog entry
OK: package is built
OK: code change
OK: no manual change required
Comment 4 Sönke Schwardt-Krummrich univentionstaff 2015-02-27 15:19:38 CET
UCS@school 4.0 v2 has been released:

If this error occurs again, please use "Clone This Bug".
Comment 5 Florian Best univentionstaff 2015-11-16 08:49:08 CET
Reported again, 3.2-6 errata373 (Borgfeld)