[VoiceOps] NTP Question

Peter Beckman beckman at angryox.com
Mon Feb 17 23:02:46 EST 2020

Ooooh I like that one!

The thread got a little confusing --

     Are we talking about using NTP as a client on VMs?

     Or using VMs to run NTP servers?

If as a server:
     Hell NAH! Don't do it. Like everyone said, the clock available to the
     OS isn't reliable, you don't want its drift to affect other machine's

If as a client:
     Hell YAH! VM clocks are unreliable. Heck, we had a dedicated server that
     had a 14 second a day drift! We used the heck out of NTP to keep that
     sucker from losing time.

Sort of related: I really love OVH as a hosting provider, but they offer
one time source, and it is in Beauharnois, Canada, even if you use their
Oregon US Datacenter. These NTP devices are so inexpensive to cover a whole
datacenter, why are we introducing network latency?!?

I am of the opinion that each physical datacenter should provide its own
Stratum 1 NTP source.


On Tue, 18 Feb 2020, Tim Bray via VoiceOps wrote:

> On 17/02/2020 21:52, Mike Hammett wrote:
>> How many NTP servers do you guys run?
>> I just spun up two NTP servers in different locations on this network. 
>> Metaswitch just asked me for at least four (preferably five, or even more). 
>> Right now, the ones I have are just referencing the US pool. Eventually, 
>> they'll reference on-net GPS-backed devices.
> https://store.uputronics.com/index.php?route=product/product&path=60_70&product_id=92
> LeoNTP server.   If you want to run your own.
> -- 
> Tim Bray
> Huddersfield, GB
> tim at kooky.org
> +44 7966479015

Peter Beckman                                                  Internet Guy
beckman at angryox.com                                 http://www.angryox.com/
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