Using Active Directory for ESX 3.5 Authentication

Very easy, and quite basic. The first command lets you use AD for authentication, and only authentication. You need to add the user, as ESX still expect to find the user in the /etc/password file.

esxcfg-auth --enablead --addomain=<my_ad.domain.com> --addc=<my_dc.my_ad.domain.com>
useradd <my_ad_username>