In my server the ntpd service is started but it does not seem to work.
I can find nothing according to this ( Where are the ntpd log file located, and how can we configure the ntpd log file path? ) and this ( Where can I look up for the ntpd log? ) :-(
According to MadHatter's suggestion (See How can I synchronize system time with a NTP server continuously? ), I listed some information in my server:
ntpdate
returns:
2 May 21:47:55 ntpdate[47274]: the NTP socket is in use, exiting
ntpq -c as
returns:
ind assID status conf reach auth condition last_event cnt
===========================================================
1 22393 9614 yes yes none sys.peer reachable 1
2 22394 9414 yes yes none candidat reachable 1
3 22395 9414 yes yes none candidat reachable 1
ntpq -c pe
returns:
remote refid st t when poll reach delay offset jitter
==============================================================================
*time5.aliyun.co 10.137.38.86 2 u 157 1024 377 42.869 3.156 0.274
+time7.aliyun.co 10.137.38.86 2 u 402 1024 377 42.997 4.893 0.251
+ntp3.aliyun.com 10.137.38.86 2 u 276 1024 377 38.393 7.159 0.263
And my ntp.conf
(# lines are not listed) is:
minpoll 4
maxpoll 8
driftfile /var/lib/ntp/drift
restrict default kod nomodify notrap nopeer noquery
restrict -6 default kod nomodify notrap nopeer noquery
restrict 127.0.0.1
restrict -6 ::1
server ntp1.aliyun.com
server ntp2.aliyun.com
server ntp3.aliyun.com
includefile /etc/ntp/crypto/pw
keys /etc/ntp/keys
UPDATE
ntpq -c rv
returns:
assID=0 status=0644 leap_none, sync_ntp, 4 events, event_peer/strat_chg,
version="ntpd 4.2.4p8@1.1612-o Tue Nov 29 00:09:12 UTC 2011 (1)",
processor="x86_64", system="Linux/2.6.32-220.4.1.el6.x86_64", leap=00,
stratum=3, precision=-20, rootdelay=42.918, rootdispersion=11.376,
peer=18777, refid=182.92.12.11,
reftime=dad1e8b1.6b42ba77 Mon, May 2 2016 22:54:41.418, poll=8,
clock=dad1e995.5771e298 Mon, May 2 2016 22:58:29.341, state=4,
offset=-0.578, frequency=23.898, jitter=1.845, noise=1.218,
stability=0.223, tai=0
p.s. This server is located in Chengdu, China (GMT+8)