NTP through DNS?

Kevin Darcy kevin.darcy at fcagroup.com
Wed Sep 19 21:59:54 UTC 2018


I'll just toss in the factoid that NTP can be run on multicast or anycast,
which may negate some of the motivation for using a DNS name to access the
service.


                               - Kevin

On Wed, Sep 19, 2018 at 11:38 AM Andrew Latham <lathama at gmail.com> wrote:

> On Wed, Sep 19, 2018 at 10:19 AM Ray Bellis <ray at isc.org> wrote:
>
>> On 19/09/2018 15:59, Mauricio Tavares wrote:
>>
>> >> An NTP serice doesn't belong to a domain, so maybe not (I don't know of
>> >> one off my mind).
>> >>
>> >       Not necessarily; I can name a few universities and business who
>> > offer their own NTP servers to their internal systems. AFAIK, this is
>> > considered good practice.
>>
>> That's not the point that Mukund was making.
>>
>> An NTP server is part of your local network configuration.   Your domain
>> name is also part of your local network configuration.  As such, these
>> two values are often served by DHCP.
>>
>> That does not mean, though, that there is a one-to-one mapping from your
>> domain name to your preferred set of NTP servers.
>>
>> One could have numerous subnets located all over the planet with
>> different NTP servers, but all sharing the same domain name.
>>
>> If it were feasible to store an NTP server address in the DNS it would
>> more logically fit in the in-addr.arpa zone, and not in a forward zone.
>>
>
> Many organizations have per site "views" of the zone so it actually works
> out well. There are many ways of building functional infrastructure. I
> agree there are many applications where this setup would not be useful,
> just addressing OP.
>
>
>>
>> Ray
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>
> --
> - Andrew "lathama" Latham -
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