samba - Aug 2009 - Samba HA Issue Fixed, need clarifications.

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Turns out that the issue I was having regarding the inability to add
computers to a domain in a fail over state using the backup PDC was a
result of the computer(s) in question still having a record in LDAP.
When I manually removed the computer record from LDAP (since removing it
from the domain did not remove it from LDAP), failed over to the backup
PDC and added it to the domain, it worked.

Since samba is capable of adding a computer to LDAP when it is added to
the domain, is it possible for it to automatically remove a computer
from LDAP when it is removed from the domain?  What mechanism is
"broken" or not configured properly that would provide this?

Does anyone have any idea what attribute(s) in a computer record in LDAP
would cause the record to be "homed" to a particular PDC?  I'd
like to
know for historical reasons if possible.

Thanks.
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