Centos NTP vs AD

0

My machines with Centos refuse to sync with NTP server running on Windows AD controller. Offset value seem high and the AD presents itself as stratum 1, but in reality is stratum 4. Could this combination be the cause of my issues?

[root@centos etc]# yum list ntp
Loaded plugins: product-id, search-disabled-repos, subscription-manager
Installed Packages
ntp.x86_64                 4.2.6p5-28.el7                   @rhel-7-server-rpms

[root@centos etc]# ntpq
ntpq> peer
     remote           refid      st t when poll reach   delay   offset  jitter
==============================================================================
 192.168.16.34      .LOCL.           1 u   12   64  377    0.419  13186.1   0.910
ntpq> as

ind assid status  conf reach auth condition  last_event cnt
===========================================================
  1 20892  9024   yes   yes  none    reject   reachable  2
ntpq> rv 20892
associd=20892 status=9024 conf, reach, sel_reject, 2 events, reachable,
srcadr=192.168.16.34, srcport=123, dstadr=192.168.16.101, dstport=123,
leap=00, stratum=1, precision=-23, rootdelay=0.000, rootdisp=10323.990,
refid=LOCL, reftime=e0d66a5e.672396dd  Mon, Jul 15 2019  4:58:38.402,
rec=e0d6d7ab.3ba1c725  Mon, Jul 15 2019 12:44:59.232, reach=377,
unreach=0, hmode=3, pmode=4, hpoll=6, ppoll=6, headway=45,
flash=400 peer_dist, keyid=0, offset=13186.159, delay=0.419,
dispersion=0.966, jitter=0.910, xleave=0.109,
filtdelay=     0.42    0.42    0.42    0.45    0.46    0.46    0.41    0.45,
filtoffset= 13186.1 13185.9 13185.7 13185.5 13185.3 13185.1 13184.9 13184.7,
filtdisp=      0.00    1.01    2.01    3.02    3.98    4.97    5.94    6.92
ntpq>

navtom

Posted 2019-07-15T10:49:53.407

Reputation: 1

I suspect it's being thrown out due to the very high offset - do you have the option to use some real servers who reference an external source? you host 192.168.16.34 appears to be using its local clock as a time source which is not ideal. – user3788685 – 2019-07-31T17:33:26.947

No answers