2.6.6 Fails to start without proxy_url_ext (and _int?) defined in settings

[opoplawski]

Updated to 2.6.6 via yum. New settings file goes to settings.rpmnew. Without updating settings, cobblerd fails to start with:

Starting cobbler daemon: Traceback (most recent call last):
  File "/usr/bin/cobblerd", line 77, in main
    api = cobbler_api.BootAPI(is_cobblerd=True)
  File "/usr/lib/python2.6/site-packages/cobbler/api.py", line 135, in __init__
    self.deserialize()
  File "/usr/lib/python2.6/site-packages/cobbler/api.py", line 969, in deserialize
    return self._config.deserialize()
  File "/usr/lib/python2.6/site-packages/cobbler/config.py", line 266, in deserialize
    raise CX("serializer: error loading collection %s. Check /etc/cobbler/modules.conf" % item.collection_type())
CX: 'serializer: error loading collection repo. Check /etc/cobbler/modules.conf'

Editing config.py to keep the original exception shows:

  File "/usr/lib/python2.6/site-packages/cobbler/settings.py", line 271, in __getattr__
    raise AttributeError, name
AttributeError: proxy_url_ext

Adding the entries to settings fixes. Is there a way for the module to have a default value so we don't get an exception on load?

[alanoe]

the real discussion here is what to do when attributes are added/removed/updated in Cobbler settings. imho we should provide a migration script (easier for user) or provide required environment changes in release notes (easier for developers).

[jmaas]

yes, my bad. it's hardwired into my brain to review .rpmnew files after upgrading....

but i agree we should handle this case more gracefuly...

[igalic]

between minor version upgrades, cobbler shouldn't fail to start, because a new attribute that's been added doesn't exist in the configuration file.

[alanoe]

I'll add new proxy settings to DEFAULTS list in cobbler/settings.py, this will solve this problem.

[opoplawski]

@jmaas - I'm waiting for a 2.6.7 with this fixed before pushing to EPEL. @alanoe - any progress?

[alanoe]

@opoplawski: a3a67a4 in master fixes this issue. It must be backported to 2.6 branch. I added all settings which were missing, must check if all of those exist in 2.6 branch. Obviously, the relevant ones are:

• "proxy_url_ext": ["", "str"],
• "proxy_url_int": ["", "str"],

[alanoe]

This was already merged to 2.6 branch. Should close this issue as soon as 2.6.7 is out.

[jmaas]

2.6.7 has been released which fixes this issue.

[robinbowes]

Did this get pushed? I don't see 2.6.7 in Fedora 21?

[jmaas]

@opoplawski ?

[opoplawski]

It's in updates-testing waiting for positive feedback: https://admin.fedoraproject.org/updates/FEDORA-2015-0039/cobbler-2.6.7-1.fc21

[robinbowes]

Ah, OK. I've grabbed it from there, thanks.