[Samba] Problems after PC is joined to the domain - Samba 4

L.P.H. van Belle belle at bazuin.nl
Thu Jun 5 01:37:57 MDT 2014

and more complete. 

auto eth0
iface eth0 inet dhcp.

these are more for the static ip adress with overrides. 

         dns-nameservers # this is to override
	   dns-search your.domain.tld ( optional extra search domains domain.tld ) 
         dns-domain your.domain.tld 

and to make it even more complete. 

this one is used when you use DHCP Client. 
see /etc/dhcp/dhclient.conf
and configure teh options here. 

#send host-name "andare.fugue.com";
send host-name = gethostname();
#send dhcp-client-identifier 1:0:a0:24:ab:fb:9c;
#send dhcp-lease-time 3600;
#supersede domain-name "fugue.com home.vix.com";
#prepend domain-name-servers;
request subnet-mask, broadcast-address, time-offset, routers,
        domain-name, domain-name-servers, domain-search, host-name,
        dhcp6.name-servers, dhcp6.domain-search,
        netbios-name-servers, netbios-scope, interface-mtu,
        rfc3442-classless-static-routes, ntp-servers;
#require subnet-mask, domain-name-servers;

Now you always have a "correct" resolve.conf 

Good luck. 
I've tried to help te ubuntu users with the "wrongs" in hostname.domainname. 

read the post with subject : 
RE: [Samba] Problems after PC is joined to the domain - Samba 4
ma 2-6-2014 14:51 

its usefull info. 

Good luck. 


>-----Oorspronkelijk bericht-----
>Van: theo at ubuntucy.org [mailto:samba-bounces at lists.samba.org] 
>Namens Theodotos Andreou
>Verzonden: donderdag 5 juni 2014 9:15
>Aan: steve
>CC: samba at lists.samba.org
>Onderwerp: Re: [Samba] Problems after PC is joined to the 
>domain - Samba 4
>On 06/04/2014 01:46 PM, steve wrote:
>> On Wed, 2014-06-04 at 13:34 +0300, Theodotos Andreou wrote:
>>> On 06/03/2014 01:18 PM, steve wrote:
>>>> On Tue, 2014-06-03 at 08:38 +0300, Theodotos Andreou wrote:
>>>>> OK I followed the guide blindly:
>>>>> # grep 127 /etc/hosts
>>>>>	MYPCNAME.dom.forest.int MYPCNAME localhost
>> Please correct this line.
>But this follows exactly the guide you send me previously
>>>>> The network interface is configured for DHCP
>> The DHCP configuration is also in the dns howto.
>dhcp client config is ok:
>root at ENT01LP628:~# cat /etc/network/interfaces
># interfaces(5) file used by ifup(8) and ifdown(8)
>auto lo
>iface lo inet loopback
>auto eth0
>iface eth0 inet dhcp
>         dns-nameservers # this is to override
>>> resolv.conf:
>>> # cat /etc/resolv.conf
>>> # Dynamic resolv.conf(5) file for glibc resolver(3) 
>generated by resolvconf(8)
>>> nameserver
>>> search dom.forest.int
>> No. Set the IP of the DC as the only nameserver. The dns 
>> is also in the howto.
>I will need to use the master DNS which is our unix based IPAM because 
>the zones on the DCs are secondary.
>>> Ubuntu is using the dnsmasq-base on all recent version hence the
>>> above
>> Disable dnsmasq just in case.
>>> nscd is not installed (It is not mentioned in the guide).
>>> So probably the problem is nscd?
>> No.
>>> Should I install it?
>> No.
>OK I won't :)
>> Now un-join and then rejoin.
>> How are you updating the dns?
>> HTH
>> Steve
>Our DNS setup is rather peculiar. The domain controllers have only 
>secondary zones that update our IPAM (which is the master), when a PC 
>joins the domain. So you need to get the domain, PC hostnames, 
>etc from 
>the master.
>Also it appears that having the FQDN in /etc/hostname is a bad idea:
>$ nslookup mypcname.dom.forest.int
>Name:	mypcname.dom.forest.int.dom.forest.int
>It seems that having the FQDN in /etc/hostname makes ubuntu 
>believe that 
>this is a simple hostname. Not sure what to think of it. According to 
>the man page:
>//etc/hostname Historically this file was supposed to only contain the 
>hostname and not the full canonical FQDN.*Nowadays most 
>software is able 
>to cope with a full FQDN here*. This file is read at boot time by the 
>system initialization scripts to set the hostname.
>Apparently DNS and DHCP are not onw of those software :)
>I fixed /etc/hostname to the actual hostname and continued.
>Leaving domain was OK. Joining again gave:
># net ads join -U 'admin'
>Enter admin's password:
>Using short domain name -- DOM
>Joined 'MYPCNAME' to dns domain 'dom.forest.int'
>'net ads keytab' stopped giving errors though. 'wbinfo -u' still takes 
>long to output the names and 'id username' fails to retrieve 
>the username
>Looking at the configuration I was puzzled by this:
>    idmap config LIM:schema_mode = rfc2307
>the man page of idmap_ad says
>        The idmap_ad plugin provides a way for Winbind to read 
>id mappings from an AD server that uses RFC2307/SFU schema extensions.
>We don't have SFU installed on our domain controllers. Is it 
>possible to 
>join a samba 4 pc as a member in Win2k2003 AD without SFU? Guides?
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