[ntp:questions] Problem facing with Ntp client Configuration

David Lord snews at lordynet.org
Thu Mar 27 12:22:58 UTC 2014


Biswajit Panigrahi wrote:
> Hi Mayer,
> I have done the required changes. I have found one problem regarding condition field in ntpq
> When ever I have restarted ntpd on client and executed ntpq "as"
> atcafs-n11s2:~# ntpq
> ntpq> as
> 
> ind assid status  conf reach auth condition  last_event cnt
> ===========================================================
>   1 45503  9044   yes   yes  none    reject   reachable  4
> Condition field shows "reject" for more then 15 to 20 minute then after it changes to "sys.peer" after then only sync happens.
> 
> I have opened the port 123 for ntp. Still it shows reject 
> Please let me know reason for this to fix the issue

Why do you believe there is an issue to be fixed?

Ntpd takes a certain amount of time to sync after a restart.
You could add a few more ntp sources. Three sources are not
enough, four is good, five is safer.

One of my servers, ntp-dev 4.2.7p433, was restarted on Mar 15:

time   remote  st  reach   offset
18:36  oPPS     0    377   -0.001
reboot
18:42   PPS     0      0    0.000
18:48  oPPS     0     37  -60.233
18:54  oPPS     0    377   -0.004
19:00  oPPS     0    377   -0.001

Other servers without pps take a few minutes longer to sync.


David

> 
> Regards,
> Biswajit 
> 
> 
> 
> -----Original Message-----
> From: Danny Mayer [mailto:mayer at ntp.org] 
> Sent: Tuesday, March 25, 2014 9:44 PM
> To: Biswajit Panigrahi; questions at lists.ntp.org
> Subject: Re: Problem facing with Ntp client Configuration
> 
> On 3/25/2014 8:35 AM, Biswajit Panigrahi wrote:
>> Hi All,
>> When ever I configure ntp client ,then its takes more time even if 7minute to 8 minute difference is there between client and server.
>> Please provide me the configuration which will sync within less time.
>> Currently ntp.drift file is empty.shall we need to modify the same?
>>
>> Current NTP Client configuration is :
>>
>> server 10.16.188.254
> Add iburst to this line.
> Since this is an internal server can you add any more NTP servers? One
> is not a good number 3 is good and 4 is better. Never use 2.
> 
>> server 127.127.1.0
>> fudge 127.127.1.0 stratum 10
>>
> 
> Get rid of these last two lines. Unless the ntp client is serving time
> elsewhere it's not needed.
> 
>> restrict 10.16.188.254 mask 255.255.255.255 nomodify notrap noquery
>> restrict 127.0.0.1
>>
>> broadcastclient novolley
>> broadcastdelay 0
>> keys /var/ntp/keys
>>
>> logfile /var/log/ntp/ntpd.log
>> driftfile /var/log/ntp/ntp.drift
>> statsdir /var/log/ntp/
>> statistics loopstats peerstats
>> filegen loopstats file loopstats type day enable
>> filegen peerstats file peerstats type day enable
>>
>>
>>
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> 
> Danny
> 
> 
> 
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