Hello and welcome to LQ.
The best places to find information about this would be on the free RH web site. Once in a while they limit access to some information and then I'd look for Centos web support.
A web search for terms like this. configure samba redhat 6 active directory integration
Provides a good starting point.
https://access.redhat.com/sites/defa...lines-v1.5.pdf
https://www.redhat.com/en/resources/...tive-directory
The question you asked however is a bit vague to provide step by step.
RedHat is a company that has paid support and you may already be paying for it.
