Hi Lists

I have 2 LTSP servers (failover) running Ubuntu. I have to setup a highly available LDAP authentication system.

LTSP's users must authenticate using a LDAP server. Both LDAP servers must replicate between them.

I don't really know where to start.. I found those websites:

http://www.linuxjournal.com/article/5505

http://www.ltsp.org/twiki/bin/view/Ltsp/LDAP

Can you give me some hint or others websites that could help me.

Thanks (and sorry for my bad English)