[cifs-discuss] smbadm failed to find any domain controllers

[Evgeny Chumak]

> The error message "failed to find any domain
> controllers" indicates that 
> the DNS SRV RR lookup for DCs of the 'mydomain.ru'
> domain has failed.  
> If you have confirmed that a correct DNS server has
> been specified in 
> the resolver, then you might want to make sure the
> following record is 
> present in the DNS database.
> 
> Forward Lookup Zones
>    _msdcs.mydomain.ru
>  dc
>      _tcp
>      _ldap    
> he above SRV RR doesn't exist, it will result in DC
> discovery error.
> 
> BTW, being able to resolve name<->ip of the domain
> controller does NOT 
> automatically imply that the DNS SRV RR lookup would
> work.
> name<->ip resolution searches for the domain
> controller's DNS A or PTR 
> RRs while the SRV RR lookup searches for the SRV RR
> record as mentioned 
> above.
> 
> Regards,
> 
> Natalie
> 

Hello Natalie!

I have checked DNS config as you adviced and found that everything is good. Here is output of nslookup command:

-bash-3.2# nslookup
> set type=srv
> _ldap._tcp.dc._msdcs.bee.vimpelcom.ru
;; Truncated, retrying in TCP mode.
Server:         192.168.16.132
Address:        192.168.16.132#53

_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 rd-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 vr-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 su-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 ms-dcs006.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 sp-dcs101.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 bg-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 sl-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 ms-dcs005.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 ni-dcs002.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 kd-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 sk-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 vv-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 tv-dcs002.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 st-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 sn-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 ks-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 ek-dcs002.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 cl-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 nl-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 tb-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 ka-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 sr-dcs002.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 gr-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 tu-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 ek-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 vl-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 ni-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 ck-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 pz-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 ms-dcs007.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 kn-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 at-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 tm-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 ab-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 pt-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 vd-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 kr-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 mu-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 nk-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 km-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 ul-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 ob-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 ku-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 kh-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 ms-dcs008.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 or-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 iv-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 st-dcs002.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 kl-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 vr-dcs002.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 ms-dcs003.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 kz-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 pg-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 uf-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 om-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 nz-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 ys-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 bn-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 yo-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 ns-dcs002.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 ar-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 nn-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 ps-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 tv-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 lp-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 ki-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 tl-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 sr-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 br-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 el-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 kh-dcs002.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 vk-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 ns-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 sp-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 to-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 rz-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 bl-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 iz-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 nv-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 ir-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 ma-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 us-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 kg-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 sc-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 ms-dcs004.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 vg-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 ch-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 pm-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 sm-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 pk-dcs001.bee.vimpelcom.ru.
_ldap._tcp.dc._msdcs.bee.vimpelcom.ru   service = 0 100 389 rd-dcs002.bee.vimpelcom.ru.
> 

As you can see there are many answers, so SRV RR records exist. I did snoop (snoop -vvv udp and port 53) of smbadm join command - the result is in smbadm_snoop.out I will sendit by email because i cannot attach files to forum (i don't know why).
Also i will send zzzzz.gz file which is binnary log of snoop (snoop -o /zzzzz udp and port 53). It is strange that there are answers (with DC names) in binnary log but smbadm doesn't see these answers.
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