LDAP + SSH + Key Auth

[openLDAP <openLDAP@theindianmaiden.com>]

I would like to use public keys on my OS X servers for my LDAP users to use SSH.  All indications from the OSX list is that it is not possible. 

I was hoping someone on this list could confirm that LDAP/Key Pair/SSH is not possible or point me in the right direction to where someone has figured it out. I would like to centrally control SSH access and not have to have local accounts on all of my servers.

Any help is appreciated.