Briantb pisze:
>
> Anyone have a clue?

Do you have any firewalls between this machine and the time server? Just
check if UDP/123 is not being dropped in the log. There must be
something with communication between those two.

--
Regards
Filip Kata

Briantb wrote:
> Greetings!
>
> There's an appliance in the Data Center
> that gets its time from somewhere in space
> that I point two of our servers (master time servers)
> to for time sync. All the other servers point
> to these two master time servers in /etc/ntp.conf.
> This works great until the appliance gets hosed.
> I unplug the appliance, replug it and all is happiness again.
>
> OK, so I'd like to be able to know when the appliance
> is no longer serving time and I thought I'd do the following
> on one of our master time servers:
>
> stopsrc -s xntpd
> ntpdate timeApplianceInDataCenter
> rc=$?
> if [[ $rc -ne 0 ]
> then
> # send some error message
> fi
> startsrc -s xntpd
>
> However, when I run the ntpdate command I continue to get
> "no server suitable for synchronization found" messages.
>
> Here's what I know:
>
> 1. The Appliance is defined in /etc/hosts, is included in
> /etc/ntp.conf, and works just fine when xntpd is running.
> (I use copy/paste to ensure the proper host name is being used
> for the ntpdate command.)
>
> 2. When xntpd is turned off, the "ntpdate timeApplianceInDataCenter"
> command fails.
>
> Anyone have a clue?
>

Hi!

I would change your "watchdog". If you use "ntpq -p" you get your peers
like this:
server# ntpq -p
remote refid st t when poll reach delay offset
jitter
================================================== ============================
*ntp2.belbone.be 195.13.23.6 2 u 272 1024 377 46.990 -6.663
0.179
+merlin.karpo.cz 195.113.144.201 2 u 395 1024 377 51.062 9.247
1.081
+dns.univ-lyon1. 195.220.94.163 2 u 370 1024 377 55.322 7.964
3.293

The column reach is octal and shows a binary pattern. 377 means 11111111
so the last 8 polls the server was up & running. With grep/awk/perl/...
you could easy monitor your "timeApplianceInDataCenter" without restart
xntp.

with best regards
Dieter Stumpner