ntp时钟同步配置详解

ntp时钟同步
yum install -y ntp
systemctl enable ntpd（设置开机自启）

server
（vi /etc/ntp.conf）

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Hosts on local network are less restricted.

restrict 10.19.0.0 mask 255.255.0.0 nomodify notrap # 允许内网其他机器同步时间

Please consider joining the pool (http://www.pool.ntp.org/join.html).

#server 0.centos.pool.ntp.org iburst #注释掉原时钟服务器（）
server 127.127.1.0 # local clock
fudge 127.127.1.0 stratum 10

client

(vi /etc/ntp.conf)注释原时钟服务器，增加2行

#Hosts on local network are less restricted
restrict 10.19.36.7 nomodify notrap noquery
server 10.19.36.7 #ntp server inner net
#server 1.centos.pool.ntp.org
#server 2.centos.pool.ntp.org

systemctl restart ntpd
systemctl status ntpd
ntpstat