driftfile /var/lib/ntp/drift

restrict 127.0.0.1
restrict 0.0.0.0 mask 0.0.0.0
restrict 10.1.0.0 mask 255.255.0.0 nomodify

server 210.72.145.44 prefer
server 0.asia.pool.ntp.org
server 0.asia.pool.ntp.org
server 1.cn.pool.ntp.org
server 2.cn.pool.ntp.org
server 3.cn.pool.ntp.org
server 0.cn.pool.ntp.org
server time.windows.com
server 0.centos.pool.ntp.org
server 1.centos.pool.ntp.org
server 2.centos.pool.ntp.org
server  ntp.sjtu.edu.cn
server  s1a.time.edu.cn
server  s1b.time.edu.cn
server  s1c.time.edu.cn
server  s1d.time.edu.cn
server  s1e.time.edu.cn
server  s2a.time.edu.cn
server  s2b.time.edu.cn
server  s2c.time.edu.cn
server  s2d.time.edu.cn
server  s2e.time.edu.cn
server  s2f.time.edu.cn
server  s2g.time.edu.cn
server  s2h.time.edu.cn
server  s2j.time.edu.cn
server  s2k.time.edu.cn
server  s2m.time.edu.cn
server 127.127.1.0
fudge 127.127.1.0 stratum 8
`
includefile /etc/ntp/crypto/pw

keys /etc/ntp/keys

ntp 配置文件