RE: NTP time reset?


Ravi,

I am using ntp to synchronise time between 2 computers. In one computer
I am observing the following log in the /var/log/messages.

Jan 17 00:49:56 chbsc301 ntpd[5940]: kernel time sync disabled 0041
Jan 17 00:50:59 chbsc301 ntpd[5940]: kernel time sync enabled 0001
Jan 17 00:54:32 chbsc301 ntpd[5940]: synchronized to 192.168.0.3,
stratum 13
Jan 17 01:00:09 chbsc301 crond(pam_unix)[9097]: session opened for user
root by (uid=0)
Jan 17 01:00:10 chbsc301 crond(pam_unix)[9097]: session closed for user
root
Jan 17 01:08:46 chbsc301 ntpd[5940]: time reset +17.656804 s

My doubt is in the last line in the above log, the time reset values is
around +17.656804 seconds. Is this normal? Normally I see below 1 second
as time reset.

My understanding of the working of NTP is that when the system's time is way-off compared to that of the time-server, there will be no synchronization until the system time is manually set to within a couple of seconds of the time-server's time.

Perhaps some abnormal event disturbed host chbsc301's idea of time? Just try a manual reset and see if it resyncs with the time-server.

Alan.


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