[Cialug] Cialug Digest, Vol 101, Issue 11

[Moder John II Lee]

Thank you for all the responses--  even though I am slightly more confused now!  

To clarify the Network has a single static public IP going into the router, and then a single net at 10.0.1.x/24

The domain is a registered domain (moderetnyre.net).

I have a few more than a handful of machines and such on the network, but would prefer to avoid doing the host file thing on each one simply because I think there is a better, more standardized way.

The domain is moderetnyre.net at 65.103.182.248

Router is at 10.0.1.1
OSXSLS1 is at 10.0.1.2
Second NIC on OSXSLS1 is ar 10.0.1.3
AP at 10.0.1.4
CentOS1 is at 10.0.1.5

All the above are on statics, the rest of the devices are pulling DHCP from the router.

DNS (for DHCP)  in the router is set to 10.0.1.2, the CL's 2 externals (yes, I know if OSXSLS1 doesn't respond quick enough that could cause problems, but I need to have a path out incase the sever goes down when I am not able to get to it).

The Statics all point to 10.0.1.2

Zach, in your previous post you said:

To start with you probably want to do:
	dig @<your.authoritative.dns.host.ip> A Centos1.(mydomain).net
which will tell you whether or not that DNS server is willing and able to answer queries for the related A record, and will bypass any OS-level DNS settings. If you get an NXDOMAIN status like your test above (or anything other than NOERROR) you need to fix the authoritative server so it will accept queries for that record.

I did that on the OSXSLS1 box and it returned:

OSXSLS1:~ administrator$ dig @10.0.1.2 A Centos1.moderetnyre.net

; <<>> DiG 9.6-ESV-R4-P3 <<>> @10.0.1.2 A Centos1.moderetnyre.net
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 36932
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;Centos1.moderetnyre.net.	IN	A

;; AUTHORITY SECTION:
moderetnyre.net.	3600	IN	SOA	ns75.domaincontrol.com. dns.jomax.net. 2013091200 28800 7200 604800 600

;; Query time: 67 msec
;; SERVER: 10.0.1.2#53(10.0.1.2)
;; WHEN: Fri Sep 20 17:45:18 2013
;; MSG SIZE  rcvd: 109


With that I agree Zach, I have missed something in setting up the OSXSLS1 DNS responder, but I do not know how to fix it.

Ideas?

Again, thanks!

John
-------------------
John is not in the sudoers file.  This incident will be reported.


  
On Sep 20, 2013, at 12:00 PM, cialug-request at cialug.org wrote:

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> Today's Topics:
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>   1. Re: DNS and playing well with OSX (Zachary Kotlarek)
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> ----------------------------------------------------------------------
> 
> Message: 1
> Date: Fri, 20 Sep 2013 09:27:47 -0700
> From: Zachary Kotlarek <zach at kotlarek.com>
> To: Central Iowa Linux Users Group <cialug at cialug.org>
> Subject: Re: [Cialug] DNS and playing well with OSX
> Message-ID: <2D05F758-ACBA-43FB-8659-6208F35EF91C at kotlarek.com>
> Content-Type: text/plain; charset="us-ascii"
> 
> 
> On Sep 19, 2013, at 9:31 PM, Don Ellis <don.ellis at gmail.com> wrote:
> 
>> New hypothesis: perhaps the Macintosh names are being provided via
>> Bonjour, and the other system names are not?
>> 
>> Zach, does this sound reasonable?
> 
> 
> By default OS X (and I believe iOS, though I haven't checked) publishes a hostname and service records via mDNS, and does mDNS lookups on the local broadcast domain as part of regular gethostname()-type operations. So "YouMachineName" or "YourMachineName.local" will "just work" among Apple products.
> 
> If you've only got a handful of machines, and particularly if some of them run Apple OSes, mDNS isn't a bad plan. But you do have to add an mDNS responder (avahi or the like) to non-Apple systems.
> 
> 	Zach
> 
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