[ntp:questions] ntp client: keep all servers at startup

mayer at gis.net mayer at gis.net
Wed May 4 21:12:50 UTC 2005


----- Original Message Follows -----
> Ralf Fassel <ralfixx at gmx.de> wrote:
> 
> > * mike <michael.no.spam.cook at wanadoo.fr>
> > | That's what I thought. But in a quick test it did not appear to be
> > the case. --<snip-snip>--
> > | pull the ether connection
> > | stop/start ntpd
> > | wait a bit (ntpdate times ot very slowly) and put back the ether
> > cable: --<snip-snip>--
> > |    the pool.ntp.org servers are not listed
> >
> > That's exactly the problem.  After some initial timeout, the server
> > is simply not considered at all any longer.  Only the LOCAL clock is
> > listed in the ntpq output, and the server does not magically come
> > back into the listing after some time.  In comparison, if the server
> > is reachable at startup and becomes unreachable later, it keeps
> > getting listed, though with a reach of 0 (or was that "-"?).
> 
> Is that ntpd timing out on initial DNS resolution of the server names,
> though?  What happens if you use the IP address(es) for the server(s)
> in ntp.conf?
> 

That is exactly the problem. Pulling the ethernet plug is not a good
test of this.

> Also might be helpful to know the version of ntpd and what OS you're
> running.

All versions will do the same thing.

Danny




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