Atomic clock

[JJ Neff]

Here is some more information about time servers and the USNO time site.

This seems to come up a lot.  The important thing to remember is if you have
more that one machine (and one is a server type) then set one to be your own
ntp server getting its time from public sources and have all other clients get
their time from it.  That way all the machines on your lan are in sync.  So
even if your server loses its mind (or ability to communicate with a 2nd
stratum ntp server) all your internal machines still have the same time.

JJN
http://tycho.usno.navy.mil/

http://tycho.usno.navy.mil/ntp.html

http://www.ntp.org/


--- Darin Perusich <Darin.Perusich at cognigencorp.com> wrote:
> ntpdate is part of the ntp/xntp package, it is used to initially sync up 
> the time with an ntp source. head on out to www.ntp.org for a list of 
> open access ntp servers.
> 
> if you're looking for a minimal ntp configuration for your server use 
> this. these ntp hosts are both stratum 2 time sources which get their 
> time from differing stratum 1 sources. while these are both open access 
> services i recommend sending them an email telling them that you'll be 
> getting time from them.
> 
> /etc/ntp.conf
> server ntp0.cornell.edu prefer  #Contact: (de10 at cornell.edu)
> server sundial.columbia.edu	#Contact: (timekeeper at columbia.edu)
> driftfile /var/lib/ntp/drift/ntp.drift # this may differ.
> 
> redhat uses the file /etc/ntp/step-tickers for the initial time sync. it 
> only needs to contain your primary ntp server, ntp0.cornell.edu from the 
> above example.
> 
> if you are going to have more then 2 machines getting time from any 
> public ntp source you should setup your own ntp server. this is really 
> quit simple, point your ntp server at the above servers, and your 
> clients at your ntp server.
> 
> 
> Joe wrote:
> > Not in MDK 9.1.
> > 
> > Joe
> > 
> > Dennis Ruzeski wrote:
> > 
> >> Check in /usr/sbin/ for ntpdate. It's there stock in most distros..  
> >> There's also ntpd. That'll sync up constantly but generates more 
> >> network traffic than I like to see.
> >>
> >> --Dennis
> >>
> >>
> >>
> >> -----Original Message-----
> >> From: Joe [mailto:josephj at main.nc.us]
> >> Sent: Wednesday, April 14, 2004 5:09 PM
> >> To: NFLUG
> >> Subject: Atomic clock
> >>
> >>
> >> Hi. I want to set my clock to a time standard.  I did some googling and
> >> came up with rdate and ntpdate, but can't seem to download them - kept
> >> getting something like 505 failed to change directory from rpmfind.
> >>
> >> What's the best way to do this and where can I get a package I can
> >> actually download?
> >>
> >> Thanks.
> >>
> >> Joe
> >>
> >>
> >>  
> >>
> > 
> 
> -- 
> Darin Perusich
> Unix Systems Administrator
> Cognigen Corp.
> darinper at cognigencorp.com
> 
> 



	
		
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