dns question??

[bruce]

Hey Patrick.

Thanks for the reply.

The situation will potentially scale/get to:
-50-100 instances on the rackspace/digitialocean cloud
-the process needs the ability to externally interface with a few of the
  boxes/instances via name as opposed to ipaddress (thus the DNS)
-the internal processes need the ability to be accessible from the other
 instances via name (again, the reason for dns) I'd prefer not to
 do ssh test at 1.2.3.4 to instances within the internal boxes/instances
 --names are much easier..
 --the internal machines for the most part are connected to other internal
   instances/boxes..  -- ie, will not be accessed externally

-while one could manage /etc/host files.. not looking to do that for
50/100 instances.. which is why the dns questions are being posed.



On Sun, Jan 31, 2016 at 1:23 PM, Patrick O'Callaghan
<pocallaghan at gmail.com> wrote:
> On Sun, 2016-01-31 at 12:57 -0500, bruce wrote:
>> As far as I can tell, most of the sites say you need to already have
>> a
>> "name" from a domain name provider. That can't be right, can it!! One
>> can have a dns process internal to an org, providing dns names to
>> machines all over the place. Granted, those machines/names might be
>> internal/private.
>
> If it's wholly internal (i.e. any lookups are from machines within the
> network), you don't need an globally recognized name. You can use
> /etc/hosts or dnsmasq.
>
>> So, does one need an "actual" real name for an externally facing
>> server in order to process the DNS so one can do a "ssh test at foo.com"
>> or can you use something like "ssh test at foo.example.com"
>
> Even if your home network is hidden behind an ISP NAT router, getting
> your own domain is quite simple. Providers such as DynDNS (www.dyn.com)
> or NO-IP (www.noip.com) offer DNS registration (either paid or free
> with restrictions). You also need a dynamic DNS client to keep them up
> to date, but most modern routers can do that for you.
>
> poc
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