NTP through DNS?

[Mukund Sivaraman]

On Wed, Sep 19, 2018 at 10:08:34AM -0400, Mauricio Tavares wrote:
> Stupid question: can I publish/query the NTP server through DNS the
> same way I can ask who is doing LDAP?

An NTP serice doesn't belong to a domain, so maybe not (I don't know of
one off my mind).

For provisioning, there are DHCP options to do this. E.g., with ISC-DHCP
and 10.98.0.5 as the NTP server:

subnet 10.98.0.0 netmask 255.255.0.0 {
       ...
       option ntp-servers 10.98.0.5;
}

and perhaps also use "tcode" and "time-offset" options to set the
timezone.

But a real bummer is that some DHCP clients (e.g., Android phones) do
not make use of this option, and don't even provide a config setting to
do so. IIRC they synchronize time via the cell phone signal.

		Mukund