[ntp:questions] How can I configure ntp server ?

Titine titine at nospam.fr
Thu Jul 12 20:58:47 UTC 2007


RH200 is an external system clock.
I start to write process which write to SHM and ntp uses this system to 
synchronise the clock. every minute I read clock from the RH2000 and if it's 
OK, I write in SHM.

How can I tell at ntp when the RH2000 isn't synchronise ?
in the SHM,  the item valid is use for this ? May I set it to 0 to indicate 
at ntp that the RH200 is not OK ?
and last problem, I don't understand the item leap

thanks :-)

"Steve Kostecke" <kostecke at ntp.isc.org> a écrit dans le message de news: 
slrnf99v33.dvi.kostecke at stasis.kostecke.net...
> On 2007-07-06, Titine <titine at nospam.fr> wrote:
>> I want to synchronize my server from RH2000
> What's that?
>> and save the difference with the system clock in memory
> ntpd steers your system clock to bring it in sync with a time-base
> (usually UTC).
>> and the clients synchronyse the clock from my server.
> You client systems will be able to sync to the ntpd on your server
> _after_ the server's ntpd is synced to a time source; either a
> locallly attached refclock or a remote time server.
>> I read in the doc that xtype = 28 is for SHM memory
> The SHM driver is used to allow external processes to send time-stamps
> to ntpd via a SHared Memory segment.
> The SHM driver is specified, in /etc/ntp.conf, as:
> server 127.127.28.n
> The shared memory-segment is created with owner-only access for unit 0
> (n=0) and 1 (n=1) , and world access for unit 2 (n=2) and 3 (n=3).
>> Can I use this type to store the clock of my server afer synchrosination
>> with the RH2000 ?
> ntpd uses the time stamps acquired through the SHared Memory segment to
> steer, or discipline, your system clock.
>> and how can i use this SHM ?
> Start at http://www.eecis.udel.edu/~mills/ntp/html/drivers/driver28.html
> -- 
> Steve Kostecke <kostecke at ntp.org>
> NTP Public Services Project - http://support.ntp.org/ 

More information about the questions mailing list