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Re: [K12OSN] Perplexing Samba LDAP issue



On Fri, Mar 20, 2009 at 10:28 AM, Rob Owens <rowens ptd net> wrote:
> On Thu, Mar 19, 2009 at 08:01:34PM -0500, R. Scott Belford wrote:
>> On Thu, Mar 19, 2009 at 11:12 AM, Rob Owens <rowens ptd net> wrote:
>> > On Thu, Mar 19, 2009 at 10:46:57AM -0500, R. Scott Belford wrote:
>> >> Aloha
>> >>
>> >> I am finding myself a bit stumped at the moment by the following error
>> >> when adding a user to a Centos 4 based samba/ldap/nfs server.
>> >>
>> >> [root localhost ~]# smbldap-useradd alohak12osn
>> >> Error: context csn exists before context prefix does at
>> >> /usr/sbin//smbldap_tools.pm line 1187.
>> >>
>> >> Things had been fine until a power outage took down the server.  I had
>> >> to do DB recovery to restore LDAP to functionality, but it now seems
>> >> that something else is corrupted.  I've done some searching without
>> >> luck, yet.  I am hoping that one of you have seen or been stumped by
>> >> this before.  Any suggestions would be most appreciated.
>> >>
>> > Just a wild guess:
>> >
>> > I googled csn and it looks like it's a timestamp of sorts.  Is your system time/date correct?
>> >
>> > The other thing I'd do is check ldap.conf, libnss-ldap.conf, pam_ldap.conf, and nsswitch.conf against your backups to see if they got corrupted.
>> >
>> > What does line 1187 of smbldap_tools.pm say?  Maybe that'll give some clues.
>>
>> Aloha Rob
>>
>> Thanks for the reply.  I went offline for the day.  Time and date are
>> correct, but, I'll start thinking along those lines.
>>
>> It seems to be something UID related.  1187 is the 5th of the following 5 lines.
>>
>> $nextuid = $entry->get_value($attribute);
>>         my $modify =
>>           $ldap->modify( "$config{sambaUnixIdPooldn}",
>>             changes => [ replace => [ $attribute => $nextuid + 1 ] ] );
>>         $modify->code && die "Error: ", $modify->error;
>>
> Hmm, I think this is over my head.  Do you have multiple backups of the DB?  If so, maybe try restoring an older one as a test and see if you get the same
> problem.  Also, just out of superstition, I'd try adding a user with a different name and see if you get the same results.  One more thing:  what if you
> try specifying the UID manually when adding a user?

It is one of those things that will prove elementary once I figure it
out.  This weekend I'll do some kludging with backups to see what
variables emerge.  Thanks for the pointers and insight, Rob.

>
> -Rob

--scott


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