[ntp:questions] Synchronizing contrived time

Amit Dor-Shifer amit.dor.shifer at gmail.com
Mon Mar 10 13:02:36 UTC 2014


Thanks David. Running ntpd w/-g. Now server persists. Yet I'm unable to get
a client to update:

<quote>
# client side
$ ntpdate -d centos
10 Mar 23:49:54 ntpdate[94768]: ntpdate 4.2.6 at 1.2089-o Fri May 28 01:20:57
UTC 2010 (1)
Looking for host centos and service ntp
#...
transmit(10.0.0.5)
transmit(10.0.0.5)
transmit(10.0.0.5)
transmit(10.0.0.5)
transmit(10.0.0.5)
10.0.0.5: Server dropped: no data
server 10.0.0.5, port 123
stratum 0, precision 0, leap 00, trust 000
refid [10.0.0.5], delay 0.00000, dispersion 64.00000
transmitted 4, in filter 4
reference time:    00000000.00000000  Mon, Jan  1 1900 10:00:00.000
originate timestamp: 00000000.00000000  Mon, Jan  1 1900 10:00:00.000
transmit timestamp:  d6c83375.94be4042  Mon, Mar 10 2014 23:49:57.581
filter delay:  0.00000  0.00000  0.00000  0.00000
         0.00000  0.00000  0.00000  0.00000
filter offset: 0.000000 0.000000 0.000000 0.000000
         0.000000 0.000000 0.000000 0.000000
delay 0.00000, dispersion 64.00000
offset 0.000000

10 Mar 23:49:58 ntpdate[94768]: no server suitable for synchronization found
</quote>

Does the line "Server dropped: no data" indicate client is failing to
connect? I've verified ntpd is listening on port 123, and that this port is
reachable from the client.
Thanks




On Mon, Mar 10, 2014 at 11:40 PM, David Woolley <
david at ex.djwhome.demon.invalid> wrote:

> On 10/03/14 12:09, Amit Dor-Shifer wrote:
>
>
>> # moving clock back some 50 mins
>>
>
> Not a valid thing to do.
>
>
>> # ntpd terminates :(
>>
>
> Correct response when either it or its timing source is completely broken.
>  There is an option that allows a single such step, when starting.
>
>
>
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