[ntp:questions] Synchronizing contrived time

Amit Dor-Shifer amit.dor.shifer at gmail.com
Sun Mar 16 10:59:28 UTC 2014


David: I'm using '-c /path/to/ntp.conf'.

William: Thanks. Still, with the added conf you suggest, client won't
accept a sync from the server. Seems like the stratum setting I've added
isn't taking effect.

<server>
amit at zelda:~$ sudo date -s "$(date) - 50 minutes"
Sun Mar 16 18:32:14 EST 2014
amit at zelda:~$ cat /tmp/test_ntpd/ntp.conf
server 127.127.1.0 minpoll 4 maxpoll 4
fudge 127.127.1.0 stratum 10
amit at zelda:~$ sudo /usr/sbin/ntpd -g -c /tmp/test_ntpd/ntp.conf
...
</server>

<client>
$ date
Sun 16 Mar 2014 19:31:55 EST
$ sudo ntpdate 192.168.1.11
Password:
16 Mar 19:32:10 ntpdate[64775]: no server suitable for synchronization found
$ date
Sun 16 Mar 2014 19:32:12 EST
$ sudo ntpdate -d 192.168.1.11
16 Mar 19:32:20 ntpdate[64781]: ntpdate 4.2.6 at 1.2089-o Fri May 28 01:20:57
UTC 2010 (1)
Looking for host 192.168.1.11 and service ntp
host found : 192-168-1-11.tpgi.com.au
transmit(192.168.1.11)
receive(192.168.1.11)
transmit(192.168.1.11)
receive(192.168.1.11)
transmit(192.168.1.11)
receive(192.168.1.11)
transmit(192.168.1.11)
receive(192.168.1.11)
transmit(192.168.1.11)
192.168.1.11: Server dropped: strata too high
server 192.168.1.11, port 123
stratum 16, precision -23, leap 11, trust 000
refid [192.168.1.11], delay 0.02779, dispersion 0.00002
transmitted 4, in filter 4
reference time:    00000000.00000000  Mon, Jan  1 1900 10:00:00.000
originate timestamp: d6cfd431.bdd846e0  Sun, Mar 16 2014 18:41:37.741
transmit timestamp:  d6cfe014.459a1fd1  Sun, Mar 16 2014 19:32:20.271
filter delay:  0.02916  0.02809  0.02808  0.02779
         0.00000  0.00000  0.00000  0.00000
filter offset: -3042.53 -3042.53 -3042.53 -3042.53
         0.000000 0.000000 0.000000 0.000000
delay 0.02779, dispersion 0.00002
offset -3042.531538
</client>

Running the server with '-d' yields the following (otherwise silent) error:

amit at zelda:~$ sudo /usr/sbin/ntpd -d -g -c /tmp/test_ntpd/ntp.conf
ntpd 4.2.6p3 at 1.2290-o Tue Jun  5 20:12:08 UTC 2012 (1)
16 Mar 20:47:24 ntpd[5042]: proto: precision = 0.208 usec
event at 0 0.0.0.0 c01d 0d kern kernel time sync enabled
16 Mar 20:47:24 ntpd[5042]: getconfig: Couldn't open
</tmp/test_ntpd/ntp.conf>

strace-ing it shows:
open("/tmp/test_ntpd/ntp.conf", O_RDONLY) = -1 EACCES (Permission denied)

amit at zelda:~$ ll /tmp/test_ntpd/ntp.conf
-rwxrwxrwx 1 amit amit 69 Mar 16 20:17 /tmp/test_ntpd/ntp.conf*




On Sun, Mar 16, 2014 at 8:10 PM, David Woolley <
david at ex.djwhome.demon.invalid> wrote:

> On 15/03/14 23:55, Amit Dor-Shifer wrote:
>
>> William, earlier along this post, I was asking (David, specifically) for a
>> suggested fix to this error.
>> Can you offer a possible fix?
>>
>>  I thought that had been answered; you are using the wrong option to
> specify the custom configuration file on the server.
>
>
> _______________________________________________
> questions mailing list
> questions at lists.ntp.org
> http://lists.ntp.org/listinfo/questions
>


More information about the questions mailing list