What Do I Need?

[Eugene Poole]

I'm trying to upgrade my environment and I've reinstalled my CentOS 
machines to CentOS 7 except for one.  I've got my DNS for my LAN working 
just fine.  So now it's time for Directory Server.

What is a GOOD tutorial to follow? My environment includes 26 physical 
and KVM virtual machines; 4 Windows 7 machines and 1 ArcaOS (OS/2) 
machine. What is a DS configuration to go for?

TIA

-- 
Eugene Poole
Woodstock, Georgia