[Openstack] Help with keystone LDAP backend

Dolph Mathews dolph.mathews at gmail.com
Mon Mar 4 22:09:40 UTC 2013


Yes, this feature just landed during grizzly-m3.

Which docs are you referring to? The variable wasn't included in folsom's
etc/keystone.conf.sample, for example.


-Dolph


On Mon, Mar 4, 2013 at 3:35 PM, Steven Presser <spresse1 at jhu.edu> wrote:

>  The answer would appear to be that this flag doesn't do anything in the
> Folsom release.  Apprently this was fixed by:
> https://bugs.launchpad.net/keystone/+bug/1122181
>
> Unless I'm misreading something.  Could we perhaps update the docs to
> reflect the fact that this isn't available in releases yet?
>
>
> On 03/04/2013 04:08 PM, Steven Presser wrote:
>
> This is what came out of my logs.  I've bolded what looks relevant to me:
>
> LDAP init: url=ldap://typhon.acm.jhu.edu
> 2013-03-04 16:06:01    DEBUG [keystone.common.ldap.core] LDAP bind:
> dn=cn=admin,ou=OpenStack,dc=acm,dc=jhu,dc=edu
> 2013-03-04 16:06:01    DEBUG [keystone.common.ldap.core] LDAP search:
> dn=ou=Users,ou=OpenStack,dc=acm,dc=jhu,dc=edu, *scope=1*,
> query=(objectClass=inetOrgPerson)
>
> Unless I'm reading that very wrong, my scope search request is being
> ignored.  Time to dive into the code, I suppose.
>
> Steve
>
> On 03/04/2013 10:15 AM, Dolph Mathews wrote:
>
> I'd suggest enabling debug=True in keystone.conf and comparing the LDAP
> queries being issued (shown in logs) against what you're expecting.
>
>  I believe that [ldap] query_scope=sub does in fact expand queries to
> apply to subtrees, beyond just a single level (as the default value is
> query_scope=one).
>
>
>  -Dolph
>
>
> On Sun, Mar 3, 2013 at 12:05 PM, Steven Presser <spresse1 at jhu.edu> wrote:
>
>> Hey all,
>>     I have some questions about using the LDAP backend for keystone.  I'm
>> in what seems to be an odd situation.  I have an organization-wide DLAP
>> directory that already exists.  All of our users will have access to
>> OpenStack, so we want to tie directly into this directory.  However, we
>> can't have service accounts mixed in with the regular users, at least not
>> in any way that might result in you being able to log in to a service
>> account.  For neatness, the directory admin would prefer that all the
>> OpenStack stuff be off in its own OU (and has allocated us one so we can do
>> that).
>>     In that OU, I've set up the recommended schema from
>> http://docs.openstack.org/trunk/openstack-compute/admin/content/configuring-keystone-for-ldap-backend.html(changing it to my domain, obviously).  I then aliased all our users in to
>> ou=Users.  The relevant part of my keystone.conf currently looks like:
>>
>> [ldap]
>> url = ldap://[host]
>> user = cn=admin,ou=OpenStack,dc=acm,dc=jhu,dc=edu
>> password = [password]
>> suffix = dc=acm,dc=jhu,dc=edu
>> use_dumb_member = False
>> allow_subtree_delete = False
>> query_scope = sub
>>
>> As near as I can tell, this should correspond to this query:
>> $ ldapsearch -x  -D cn=admin,ou=OpenStack,dc=acm,dc=jhu,dc=edu -w
>> [password]  -b dc=acm,dc=jhu,dc=edu '(objectclass=inetOrgPerson)' -s sub
>>
>> Which returns my aliased users correctly.  (that is, it returns "dn:
>> uid=[uid],ou=People,dc=acm,dc=jhu,dc=edu" for each user).
>>
>> I really can't figure out whats going on here.  Logically, this should
>> work, but (obviously) doesn't.  Anyone have some advice for me?   My
>> suspicion is that query_scope=sub isn't doing what I expect.  (Returning
>> search results from within a subtree)
>>
>> Oh, finally, I have DEREF always enabled in ldap.conf.
>>
>> Thanks,
>> Steve
>>
>>
>>
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>
>
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