[Samba] DC server own hostname must be part of ad dc domain?

[Mike Lykov]

Hi all.

If I have AD domain dc.samges.ru, how to setup a hostname, hosts file 
and resolv.conf file? DNS is samba internal type.

Now I have settigs as here:
(ad41 is dc with fsmo roles, ip 172.16.214.141, ad51 is a second dc, ip 
172.16.214.151)

root at ad51:~# hostname -s
ad51
root at ad51:~# hostname -d
samges.ru
root at ad51:~# hostname -f
ad51.samges.ru

Must I have an $SERV.$ADDOMAIN hostname, like ad51.dc.samges.ru ?
If I change hostname now, what will happen in AD domain ?

And second part of question:

root at ad51:~# cat /etc/hosts

172.16.214.141  daeb1132-e379-4231-b114-5d03cc8925a9._msdcs.dc.samges.ru
127.0.0.1 localhost.localdomain localhost
# Auto-generated hostname. Please do not remove this comment.
172.16.214.151 ad51.samges.ru  ad51 
23a2a21d-73be-4824-8647-7ef06d463bca._msdcs.dc.samges.ru
::1             localhost ip6-localhost ip6-loopback

Are autogenerated string written bu provision script? Are it needed? 
(provision was 4.1.9 version)
Can I remove records from "hosts" for *_msdcs.dc.samges.ru, if it 
resolvable by samba dns server? (There is a same records on both DCs)

root at ad51:/etc# dig @172.16.214.151 
23a2a21d-73be-4824-8647-7ef06d463bca._msdcs.dc.samges.ru
;; QUESTION SECTION:
;23a2a21d-73be-4824-8647-7ef06d463bca._msdcs.dc.samges.ru. IN A
;; ANSWER SECTION:
23a2a21d-73be-4824-8647-7ef06d463bca._msdcs.dc.samges.ru. 900 IN CNAME 
ad51.dc.samges.ru.
ad51.dc.samges.ru.      900     IN      A       172.16.214.151

(both records resolved and present in servers dns zone)
(created as described here 
https://wiki.samba.org/index.php/Verifying_and_Creating_a_DC_DNS_Record)

Are bug 10928 still actual and for which version?

this resolv.conf seems ok?

root at ad51:/etc# cat /etc/resolv.conf
search dc.samges.ru
nameserver 172.16.214.151

-- 
Mike Lykov, system administrator