我有一个 CentOS 虚拟机在远程运行，可通过 VPN 访问。它被设置为从同一网络上的两台服务器同步时间。设置的时间大致正确，但似乎有点偏差。我对下面输出中提到的日期 2036 感到担忧，我应该担心吗？
/usr/sbin/ntpq -pcrv
remote refid st t when poll reach delay offset jitter
==============================================================================
10.245.8.100 10.249.8.100 2 u 24 64 377 1.185 12124.8 29.489
10.249.8.100 .RMOT. 16 u - 1024 0 0.000 0.000 0.000
assID=0 status=c011 sync_alarm, sync_unspec, 1 event, event_restart,
version="ntpd [email protected] Fri Nov 18 13:21:21 UTC 2011 (1)",
processor="x86_64", system="Linux/2.6.18-308.el5", leap=11, stratum=16,
precision=-20, rootdelay=0.000, rootdispersion=56.655, peer=0,
refid=INIT, reftime=00000000.00000000 Thu, Feb 7 2036 6:28:16.000,
poll=6, clock=d3fd6d1a.a01aab1b Fri, Sep 14 2012 9:45:14.625, state=1,
offset=0.000, frequency=0.000, jitter=0.001, noise=0.001,
stability=0.000, tai=0
[编辑] 根据以下建议，更多信息...
sudo /usr/sbin/ntpdate 10.245.8.100
14 Sep 13:02:02 ntpdate[7766]: step time server 10.245.8.100 offset 12.212849 sec
和 ntp.conf
restrict 127.0.0.1
restrict -6 ::1
server 10.245.8.100
server 10.249.8.100
driftfile /var/lib/ntp/drift
keys /etc/ntp/keys
server 10.245.8.100
restrict 10.245.8.100
server 10.249.8.100
restrict 10.249.8.100
答案1
看上去很奇怪。
- “stratum=16”表示它没有同步到时间源。
- 达到 377-ntp 服务器可达。
- 偏移量 12124.8 - 严重不同步
尝试在开始时执行“ntpdate 10.245.8.100”以快速同步时钟。
是否可能在配置中禁用重大调整作为防止配置错误的措施？显示您的 ntpd.conf
首先添加，限制规则以允许同步
# Permit time synchronization with our time source, but do not
# permit the source to query or modify the service on this system.
restrict default kod nomodify notrap nopeer noquery
restrict -6 default kod nomodify notrap nopeer noquery
# Permit all access over the loopback interface. This could
# be tightened as well, but to do so would effect some of
# the administrative functions.
restrict 127.0.0.0 mask 255.0.0.0
restrict -6 ::1