客户端执行ntpdate同步时间时发生错误：
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| ntpdate\[10877\]: no server suitable for synchronization found
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debug模式运行ntpdate:
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| # ntpdate -d 192.168.0.3
ntpdate -d 192.168.0.3
5 May 14:52:58 ntpdate\[10877\]: ntpdate 4.2.6p5@1.2349-o Fri Jul 22 17:30:52 UTC 2016 (1)
transmit(192.168.0.3)
receive(192.168.0.3)
transmit(192.168.0.3)
receive(192.168.0.3)
transmit(192.168.0.3)
receive(192.168.0.3)
transmit(192.168.0.3)
receive(192.168.0.3)
192.168.0.3: Server dropped: Leap not in sync
server 192.168.0.3, port 123
stratum 3, precision -23, leap 11, trust 000
refid \[192.168.0.3\], delay 0.02617, dispersion 0.00005
transmitted 4, in filter 4
reference time: e07906ca.595bf596 Sun, May 5 2019 14:52:58.349
originate timestamp: e07906d0.bb8e930a Sun, May 5 2019 14:53:04.732
transmit timestamp: e07906d0.84432bb9 Sun, May 5 2019 14:53:04.516
filter delay: 0.02632 0.02621 0.02617 0.02617
0.00000 0.00000 0.00000 0.00000
filter offset: 0.215621 0.215522 0.215512 0.215605
0.000000 0.000000 0.000000 0.000000
delay 0.02617, dispersion 0.00005
offset 0.215512
5 May 14:53:04 ntpdate\[10877\]: no server suitable for synchronization found
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提示错误Server dropped: Leap not in sync
在ntp服务器上与上游强制同步一次时间即可
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| # service ntp stop
# ntpdate -b pool.ntp.org
# service ntp start
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然后再在客户端上重新进行时间同步