CentOS - May 2016 - Samba problem

Hi everybody,

I have to mount a DNS backend on Samba 4. I made a lot of search but all
send me to "samba-tool" which will allow me to create the dns backend.
I
wonder if "samba-tool" is absent in the samba package ?  :s

If anyone have a piece of answer, it will be very kind.

Thank you