[ntp:questions] ntp pool servers disappear - more data

chris chris-nospam at tridac.net
Fri Jun 25 17:04:52 UTC 2021


On 06/25/21 17:28, Jim Pennino wrote:
> William Unruh<unruh at invalid.ca>  wrote:
>> On 2021-06-25, Jim Pennino<jimp at gonzo.specsol.net>  wrote:
>>> chris<chris-nospam at tridac.net>  wrote:
>>>> On 06/25/21 04:08, Jim Pennino wrote:
>>>>> William Unruh<unruh at invalid.ca>   wrote:
>>>>>
>>>>> <snip old stuff>
>>>>>
>>>>>> I suspect it is the number of times that ntpd tries to contact the
>>>>>> server and fails rather than the time that is important. You could try
>>>>>> putting the server offline and then online again (I use chrony so do not
>>>>>> remember if ntpd has that option).
>>>>>
>>>>> No, it doesn't.
>>>>>
>>>>
>>>> You could use a one line cron script to restart every day, week,
>>>> whenever...
>>>
>>> Or for $14/machine I could use a USB GPS, my machine with PPS GPS, and a
>>> public server that does not request use of DNS.
>>
>> You could try specifying the server by IP rather than by name, so DNS is
>> not needed. Of course this rule out using pool, unless you put them in
>> by IP. DNS is just used to translate names to IP, so if you use IP, then
>> DNS is not needed.
>
>
> Or for $14/machine I could use a USB GPS, my machine with PPS GPS, and A
> public server that does NOT request use of DNS which yields 3 sources of
> time without using a pool or DNS lookups.
>
> Or for $28/machine I could use 2 USB GPS receivers and my machine with
> PPS GPS, which also provides 3 sources of time without any network
> access at all.
>
>

Your choice, but when I registered the ntp server here with the pool, I
just used the fixed ip address. That's what they ask for and it does
bypass dns altogether. The less translation the better, unless
you really need it...




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