[Samba] Samba AD DC, DHCP & Address Assignments

[Robert Moskowitz]

On 09/08/2015 09:04 AM, Jim Seymour wrote:
> Hi All,
>
> I should have considered this beforehand...  Assumed the info would be
> in the Wiki somewhere.  Cannot find.
>
> The way our LAN has been working is clients use DHCP, but all address
> assignments are static.  Thus, when a given PC asks "what's my
> address?", the DHCP server looks at the MAC address and asks the
> configured resolver what is the IP address for the hostname for that
> MAC address.
>
> E.g.:
>
>     subnet 192.168.0.0 netmask 255.255.255.0 {
>
>          group {
>              server-name "deepthought.example.com";
>              option domain-name-servers 192.168.0.2;
>              option subnet-mask 255.255.255.0;
>              option broadcast-address 192.168.0.255;
>
>              option routers 192.168.0.1;
>
>              option netbios-name-servers 192.168.0.2;
>              option netbios-node-type 2;
>
>              host somepc.example.com {
>                  hardware ethernet 0a:1b:2c:3d:4e:5f;
>                  fixed-address somepc.example.com;
>              }
>          }
>      }
>
>
> And the zone file on deepthought might read something like...
>
>      somepc    IN    A    192.168.0.10
>
> In this manner: We always know who's who, and we don't have employees
> throwing random things on the LAN and getting addresses.
>
> Problem with the AD DC is that it lives in a sub-domain,
> "addc.example.com", and the zone for that sub-domain is a dlz. So...
> how do I set/assign client PCs' IP addresses?

See my recent thoughts on this.  With static IP address mapping in DHCP, 
you can extend it to static zone files.

But, what about all the other dynamic stuff?  all the srv records you 
see in:

/var/lib/samba/private/dns_update_list

MS decided to lean heavily on standard services; pushing them a bit at 
the time.  In many regards we should be thankful for that as there was 
less to do and it was easier to figure out what they were up to.