NTP时钟同步不稳定?

我这边的NTP时钟分成两部分:
1、22.8.142.36,这是外网服务器,操作系统为Redhat LINUX 6.5,一方面这台服务器与外网同步,另一方面作为21.8.143.68的时钟同步服务器
22.8.142.36的/etc/ntp.conf如下:
root@bocinsmail [/root] # more /etc/ntp.conf

    #server 0.210.72.145.44 
    server 0.cn.pool.ntp.org 
    server 1.cn.ntp.org.cn 
    server 127.0.0.1 
    driftfile /var/lib/ntp/drift 
    fudge 127.127.1.0 stratum 2 
    restrict default nomodify notrap 
    restrict 127.0.0.1 
    logfile /var/log/ntp.log 

2、21.8.143.68,这是内网服务器,操作系统为AIX 5.3。一方面这台服务器与22.8.142.36同步,另一方面作为其他服务器的时钟同步服务器。
21.8.143.68的/etc/ntp.conf如下:

    #broadcastclient 
    server 22.8.142.36 prefer 
    #server 127.0.0.1 
    server 127.127.1.0 
    fudge 127.127.1.0 stratum 3 
    driftfile /etc/ntp.drift 
    tracefile /etc/ntp.trace 
    logfile /var/log/ntp.log 

然后我今天从14:10开始隔几分钟运行一次lssrc -ls xntpd,开始比较正常,后面到14:40左右就比较奇怪了。奇怪有两点:
1)时钟同步失效
2)系统时间发生变化,与时钟同步失效前的时钟有3分钟的空缺
具体的信息我发下面了,请看下,检查到底为什么?

root@MGRServer [/] # lssrc -ls xntpd
Program name: /usr/sbin/xntpd
Version: 3
Leap indicator: 00 (No leap second today.)
Sys peer: 22.8.142.36
Sys stratum: 4
Sys precision: -18
Debug/Tracing: DISABLED
Root distance: 0.257294
Root dispersion: 1.951950
Reference ID: 22.8.142.36
Reference time: dec9e6cf.f1e8b000 Tue, Jun 12 2018 14:29:35.944
Broadcast delay: 0.003906 (sec)
Auth delay: 0.000122 (sec)
System flags: pll monitor filegen
System uptime: 624171 (sec)
Clock stability: 2389.315979 (sec)
Clock frequency: 3472.000000 (sec)
Peer: 127.127.1.0

  flags: (configured)(refclock) 
  stratum:  3, version: 3 
  our mode: client, his mode: server 

Peer: 22.8.142.36

  flags: (configured)(sys peer)(preferred) 
  stratum:  3, version: 3 
  our mode: client, his mode: server 

Peer: 21.8.143.250

  flags:   
  stratum:  2, version: 3 
  our mode: symmetric passive, his mode: symmetric active 

Subsystem Group PID Status
xntpd tcpip 5767224 active
root@MGRServer [/] # lssrc -ls xntpd
Program name: /usr/sbin/xntpd
Version: 3
Leap indicator: 00 (No leap second today.)
Sys peer: 22.8.142.36
Sys stratum: 4
Sys precision: -18
Debug/Tracing: DISABLED
Root distance: 0.257843
Root dispersion: 2.058212
Reference ID: 22.8.142.36
Reference time: dec9e750.29941000 Tue, Jun 12 2018 14:31:44.162
Broadcast delay: 0.003906 (sec)
Auth delay: 0.000122 (sec)
System flags: pll monitor filegen
System uptime: 624321 (sec)
Clock stability: 2389.315979 (sec)
Clock frequency: 3472.000000 (sec)
Peer: 127.127.1.0

  flags: (configured)(refclock) 
  stratum:  3, version: 3 
  our mode: client, his mode: server 

Peer: 22.8.142.36

  flags: (configured)(sys peer)(preferred) 
  stratum:  3, version: 3 
  our mode: client, his mode: server 

Peer: 21.8.143.250

  flags:   
  stratum:  2, version: 3 
  our mode: symmetric passive, his mode: symmetric active 

Subsystem Group PID Status
xntpd tcpip 5767224 active
root@MGRServer [/] # lssrc -ls xntpd
Program name: /usr/sbin/xntpd
Version: 3
Leap indicator: 00 (No leap second today.)
Sys peer: 22.8.142.36
Sys stratum: 4
Sys precision: -18
Debug/Tracing: DISABLED
Root distance: 0.257309
Root dispersion: 2.277771
Reference ID: 22.8.142.36
Reference time: dec9e850.d1399000 Tue, Jun 12 2018 14:36:00.817
Broadcast delay: 0.003906 (sec)
Auth delay: 0.000122 (sec)
System flags: pll monitor filegen
System uptime: 624571 (sec)
Clock stability: 2389.315979 (sec)
Clock frequency: 3472.000000 (sec)
Peer: 127.127.1.0

  flags: (configured)(refclock) 
  stratum:  3, version: 3 
  our mode: client, his mode: server 

Peer: 22.8.142.36

  flags: (configured)(sys peer)(preferred) 
  stratum:  3, version: 3 
  our mode: client, his mode: server 

Peer: 21.8.143.250

  flags:   
  stratum:  2, version: 3 
  our mode: symmetric passive, his mode: symmetric active 

Subsystem Group PID Status
xntpd tcpip 5767224 active
root@MGRServer [/] # lssrc -ls xntpd
Program name: /usr/sbin/xntpd
Version: 3
Leap indicator: 00 (No leap second today.)
Sys peer: 22.8.142.36
Sys stratum: 4
Sys precision: -18
Debug/Tracing: DISABLED
Root distance: 0.257324
Root dispersion: 2.384109
Reference ID: 22.8.142.36
Reference time: dec9e8d1.13a11000 Tue, Jun 12 2018 14:38:09.076
Broadcast delay: 0.003906 (sec)
Auth delay: 0.000122 (sec)
System flags: pll monitor filegen
System uptime: 624698 (sec)
Clock stability: 2389.315979 (sec)
Clock frequency: 3472.000000 (sec)
Peer: 127.127.1.0

  flags: (configured)(refclock) 
  stratum:  3, version: 3 
  our mode: client, his mode: server 

Peer: 22.8.142.36

  flags: (configured)(sys peer)(preferred) 
  stratum:  3, version: 3 
  our mode: client, his mode: server 

Peer: 21.8.143.250

  flags:   
  stratum:  2, version: 3 
  our mode: symmetric passive, his mode: symmetric active 

Subsystem Group PID Status
xntpd tcpip 5767224 active
root@MGRServer [/] # lssrc -ls xntpd
Program name: /usr/sbin/xntpd
Version: 3
Leap indicator: 00 (No leap second today.)
Sys peer: 22.8.142.36
Sys stratum: 4
Sys precision: -18
Debug/Tracing: DISABLED
Root distance: 0.257538
Root dispersion: 2.438477
Reference ID: 22.8.142.36
Reference time: dec9e911.e6942000 Tue, Jun 12 2018 14:39:13.900
Broadcast delay: 0.003906 (sec)
Auth delay: 0.000122 (sec)
System flags: pll monitor filegen
System uptime: 624775 (sec)
Clock stability: 2389.315979 (sec)
Clock frequency: 3472.000000 (sec)
Peer: 127.127.1.0

  flags: (configured)(refclock) 
  stratum:  3, version: 3 
  our mode: client, his mode: server 

Peer: 22.8.142.36

  flags: (configured)(sys peer)(preferred) 
  stratum:  3, version: 3 
  our mode: client, his mode: server 

Peer: 21.8.143.250

  flags:   
  stratum:  2, version: 3 
  our mode: symmetric passive, his mode: symmetric active 

Subsystem Group PID Status
xntpd tcpip 5767224 active
root@MGRServer [/] # lssrc -ls xntpd
Program name: /usr/sbin/xntpd
Version: 3
Leap indicator: 11 (Leap indicator is insane.)
Sys peer: no peer, system is insane
Sys stratum: 16
Sys precision: -18
Debug/Tracing: DISABLED
Root distance: 0.257370
Root dispersion: 2.493011
Reference ID: 22.8.142.36
Reference time: dec9e952.c832e000 Tue, Jun 12 2018 14:40:18.782
Broadcast delay: 0.003906 (sec)
Auth delay: 0.000122 (sec)
System flags: pll monitor filegen
System uptime: 624937 (sec)
Clock stability: 2234.651489 (sec)
Clock frequency: -1152.000000 (sec)
Peer: 127.127.1.0

  flags: (configured)(refclock) 
  stratum:  3, version: 3 
  our mode: client, his mode: server 

Peer: 22.8.142.36

  flags: (configured)(preferred) 
  stratum:  3, version: 3 
  our mode: client, his mode: server 

Peer: 21.8.143.250

  flags:   
  stratum:  2, version: 3 
  our mode: symmetric passive, his mode: symmetric active 

Subsystem Group PID Status
xntpd tcpip 5767224 active
root@MGRServer [/] # date
Tue Jun 12 14:43:08 CST 2018
root@MGRServer [/] # lssrc -ls xntpd
Program name: /usr/sbin/xntpd
Version: 3
Leap indicator: 11 (Leap indicator is insane.)
Sys peer: no peer, system is insane
Sys stratum: 16
Sys precision: -18
Debug/Tracing: DISABLED
Root distance: 0.257370
Root dispersion: 2.493011
Reference ID: 22.8.142.36
Reference time: dec9e952.c832e000 Tue, Jun 12 2018 14:40:18.782
Broadcast delay: 0.003906 (sec)
Auth delay: 0.000122 (sec)
System flags: pll monitor filegen
System uptime: 624966 (sec)
Clock stability: 2234.651489 (sec)
Clock frequency: -1152.000000 (sec)
Peer: 127.127.1.0

  flags: (configured)(refclock) 
  stratum:  3, version: 3 
  our mode: client, his mode: server 

Peer: 22.8.142.36

  flags: (configured)(preferred) 
  stratum:  3, version: 3 
  our mode: client, his mode: server 

Peer: 21.8.143.250

  flags:   
  stratum:  2, version: 3 
  our mode: symmetric passive, his mode: symmetric active 

Subsystem Group PID Status
xntpd tcpip 5767224 active
root@MGRServer [/] # date
Tue Jun 12 14:43:21 CST 2018
root@MGRServer [/] #

Best Regards

参与7

1同行回答

匿名用户匿名用户
你好 NTP的时间不一致的原因可能是服务器之间的性能不一致,还有就是NTP时间同步一致需要时间等待 只要性能不是很差 不会等很久显示全部

你好 NTP的时间不一致的原因可能是服务器之间的性能不一致,还有就是NTP时间同步一致需要时间等待 只要性能不是很差 不会等很久

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互联网服务 · 2019-03-19
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