[ntp:questions] NTP not syncing

David Lord snews at lordynet.org
Sat Nov 2 20:50:01 UTC 2013


unruh wrote:
> On 2013-11-02, antonio.marcheselli at gmail.com <antonio.marcheselli at gmail.com> wrote:
>> Hello all,
>>
>> I have a Linux machine which comes with fixed configuration. The manufacturer allows only ONE NTP server to be setup and I learnt that this is not ideal. In fact, the NTP service usually does not work and I have to reboot the machine every now and then, so the NTPDATE command built in the boot script can re-sync the clock.
> 
> Stupid setup unless that is a pool server and even then a few more than
> one would be useful.
> 
>> I have tinkered with the configuration file manually and ended up with a working server. But when I stored the same configuration on the read only partition and rebooted, looks like it does not work anymore and after 2 days the offset keeps increasing.
> 
> How did you "store" on a read only partition. read only means that
> partition cannot be written to and thus cannot "store" anything.
> 
>> I put the same configuration on three different servers on the same network, looks like sometimes it works, sometime it doesn't.
>>
>> Here is my configuration from ntp.con
>>
>> ===
>>     server 127.127.1.0
> 
> Completely lunatic. You do NOT use the local refclock ever. (And if you
> know that that statement may have some exceptions, you may know enough
> to use it, but even then probably not). 
> 
>>     fudge 127.127.1.0 stratum 10
>>     server 158.43.128.66
>>     server 81.168.77.149
>>     server 130.88.200.4
> 
> What servers are those? You should NOT be using fixed addresses unless
> you personally control them. 

158.43.128.66   ntp1.pipex.net        is/was internet provider
81.168.77.149   mail.my-inbox.co.uk   eclipse.net.uk Eclipse Internet
130.88.200.4    dir.mcc.ac.uk         ntp server at Manchester uni

These are or used to be listed on list of public servers
at www.ntp.org


David



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