Can't get Local DNS to Run [Was[[Samba] remove wins entries - samba 3]]

[Eric Hines]

Further on this.  I just ran an ethereal trace on an attempt to ping 
lserver1 from lserver1, and it appears that my DNS isn't staying local 
at all, but I have no idea what's gone wrong (other than my 
/etc/resolv.conf file).  The trace (I'd include the relevant parts, but 
I can't get it to save anything in textual form) had lserver1.test.biz 
going out through the router/firewall for resolution.  As the firewall 
strips the local domain stuff and appends instead the ISP's domain 
stuff, the request, going to the ISP, was for lserver1.hsd1.etc.etc.  
And of course, the answer came back, "Who?"  Hence no resolution.

I'm not sure of the role of /etc/resolv.conf in all this, though.  When 
I do edit that file per John's example and don't reboot, but merely 
restart everything (named, dhcpd (I don't know about the client side of 
this), smbd, and winbindd), the resolv.conf remains as I edited it, but 
I still can't get local name resolution.  Whether I have the IP address 
in John's example, or lserver1's address, I get no name resolution.  
Also, with only the domain parts (e.g., test.biz test.us) of the machine 
names present in the search line I can't restart smb--it just hangs.  If 
I put an FQN in the search line (lserver1.test.biz), which is what 
dhclient-script does when it rewrites the file, then smb restarts OK.  
Also, John's example has several instantiations of named running; I have 
only one.

Eric Hines

-------- Original Message --------
Subject: 	Re: [Samba] remove wins entries - samba 3
Date: 	Wed, 06 Jul 2005 21:20:55 -0500
From: 	Eric Hines <eehines at comcast.net>
To: 	samba at lists.samba.org
References: 	<80F0EFBEB86B7E4CB2E30B03E00442F39980BB at guests2>



I have the following setup.  It's not fancy as I'm just trying to learn 
Linux and Samba.  My test LAN consists of a Win2k, SP4 box (mustelidae) 
and an FC3 (kernel 2.6.11-1.35_FC3) server (lserver1) running Samba 
3.0.14a.  A Samsung printer also is present via a print server plugged 
into its back.  I can print to it from lserver1, although the URI for 
the printer uses its IP address, so this probably doesn't mean much.  As 
mustelidae also can be on a larger home LAN with access to the Internet, 
and lserver1 also has access to the Internet, the whole arrangement sits 
behind an 8-port Linksys router/firewall.  As I have only a 2 box set 
up, I'm only struggling with one subnet out of the two that John has in 
his BYEXAMPLE book (adding a second subnet ought to be a piece of cake 
after I get this part running and understood).

My DNS server sits on lserver1.  I'm trying to ping lserver1 from 
lserver1.  With nsswitch set only to files or only to wins (/e.g./, 
hosts: files), this is successful.  With nsswitch set only to dns, I 
cannot get name resolution, although I can successfully ping by IP 
address.  I can ping lserver1 by name or by IP successfully from 
mustelidae.  

Where is lserver1 pointing in terms of DNS?  How do I tell?  At this 
point, all I can say is that I've set up named.conf (and dhcpd.conf) as 
John has them in his Chapt 3 example, with the sole differences being 
that I'm using one subnet and not two (a DHCP issue), I'm calling my 
server lserver1.test.biz, vice diamond.abmas.biz, and lserver1's IP 
address is 192.168.1.103, vice the one John's using in his example.  
Aside from these edits, named.conf (and dhcpd.conf) are cut and pastes 
from John's latest on line.  Is /etc/resolv.conf part of this answer?  
That's the file I can't keep from being overwritten by dhclient-script, 
even with the two dhclient-enter-hooks examples posted earlier today.

Same, probably not very responsive, answer for whether this DNS server 
has the records to do with lserver1.  The router/firewall has its own 
DHCP server, and it gets its config from our ISP and from a list of DNS 
servers that were loaded into the router/firewall when it was 
provisioned.  lserver1 gets it address from this router.  There's been 
some discussion earlier of the wisdom of this, but it's a stable 
address, if not static, as it's a long-term lease.  I do intend to put 
lserver1 onto a static address, but only after I've worked out all the 
files that have lserver1 stored by its current address, so I can keep 
them "current."  Lserver1's address hasn't changed in months, and as I'm 
on it daily, its address won't change anytime soon under the present 
arrangement.

My named.conf and dhcpd.conf are built from John's example, as mentioned 
above.  /Etc/hosts has the IP address/name pairs he calls for.  I think 
that means I'm running a local name server. 

As you can see, I have very little understanding of what's going on 
here; I've rather slavishly followed John's example, and I'm clearly 
making mistakes I'm not recognizing.

Thanks

Eric Hines

Geoff Scott wrote:

>Eric Hines wrote:
>  
>
>>Hi, Farshad,
>>
>>I'm too new at this to be of much help.  My WINS seems to be working,
>>but I'm clueless as to why, just as I'm clueless as to why my DNS is
>>not working.  
>>
>>Eric Hines
>>
>The questions you need to ask yourself are simple.  Where is my DNS server?
>Where is my machine that I am pinging from pointing to in terms of DNS?
>Does that DNS server have the records to do with my "lserver1" samba server?
>
>Are you running a local name server as per JHT's docs?  Are you pointing
>your DNS on your "lserver1" samba server to an external name server?
>
>Answer each of these questions for us and we'll see where we can help.
>
>Regards Geoff Scott
>
>  
>

-- 
He can compress the most words into the smallest ideas of any man
I ever met.
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-- 
He can compress the most words into the smallest ideas of any man
I ever met.
  - Abraham Lincoln