[ntp:questions] How often does ntpd refresh its DNS lookup?

John Thurston john.thurston at alaska.gov
Thu Aug 8 19:13:33 UTC 2019

On 8/3/2019 11:38 AM, Jason Rabel wrote:
>> For server-entries in ntp.conf, how does ntpd (4.2.8p13) time refreshing
>> of hostnames?
> As far as I know, for regular server entries once it's done the
> initial lookup on startup, that's it...
> I believe for pool entries it will do a lookup to grab new IPs if a
> pool server goes silent. Maybe that's what you were referring to?

After 20-years, we need to change the address of our time server. I was 
hoping I could just update DNS and all the clients would eventually 
notice the change. That hope is dashed.

Thanks for the information, though. The answer wasn't what I hoped, but 
I can work with this.

    Do things because you should, not just because you can.

John Thurston    907-465-8591
John.Thurston at alaska.gov
Department of Administration
State of Alaska

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