[Infrastructures] How do you manage 1000+ systems

[Rodrick Brown]

In my current organization as we grow more and more its becoming a
problem trying to manage all of our users, systems and keep track of
everything in a smoothly matter so one thing I'm looking to do deploy
is a authorization and authentication mechanism with single sign on,
so the first thing that comes to mind is Kerberos, LDAP, and
auto-mount across our environment, which consists of  350 servers,
made of Solaris, AIX, and Linux that span 3 data centers, this summer
alone we plan to add another 100 or so servers so I need something
that can scale very well, in 3 years alone we will have grown to 500+
Unix servers, so I'm just looking to hear what most people think of
Kerberos in general I'm not even sure if there are any alternatives to
Kerberos in a pure UNIX environment.

Thanks in advance.

-- 
Rodrick R. Brown 
Unix Systems Admin 
http://www.rodrickbrown.com