[ntp:questions] Re: ntp client over satellite and no CMOS battery
Danny Mayer
mayer at gis.net
Mon Sep 12 20:55:17 UTC 2005
GNWIII at gmail.com wrote:
> Brad Knowles wrote:
>
>
>> Note that ntpd can continue to run indefinitely, even though it
>>has not yet been able to get a sync. It will continue to try to get
>>a sync and then keep you in sync, until you reboot the machine.
>
>
> Or the network goes down!
>
> I have a similar situation to that of the original post. The problem
> with letting ntpd run is that you have to manually check between the
> time that the network comes up when ntp is sync'd. In my if-up.local I
> have a "service ntpd restart", which (on fedora core 4) does ntpdate to
> get the initial setting, then starts ntpd. This way, the network
> doesn't "come up" until ntpd has a good chance to sync. I just leave
> ntpd running after the network goes down.
>
> More work needs to be done for sites with intermittent network access.
> What is the cheapest way to keep ntpd sync'd to 10 s, 1 s, or 0.1 s
> without network?
>
We're working on a version that handles these things dynamically so that
it will see them when they come up.
Danny
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