1.服务端和客户端
安装包，检查状态
yum install ntp ntpdate -y
systemctl start ntpd
systemctl status ntpd
2.服务端
修改配置
vi /etc/ntp.conf #server 0.rhel.pool.ntp.org iburst #server 1.rhel.pool.ntp.org iburst #server 2.rhel.pool.ntp.org iburst #server 3.rhel.pool.ntp.org iburst server 127.127.1.0 fudge 127.127.1.0 stratum 10
重启服务，并查看
systemctl start ntpd
ntpq -p
3.客户端
修改配置
vi /etc/ntp.conf restrict 192.168.7.1 nomodify notrap noquery server 192.168.7.1 Fudge 192.168.7.1 stratum 10 #server 0.rhel.pool.ntp.org iburst #server 1.rhel.pool.ntp.org iburst #server 2.rhel.pool.ntp.org iburst #server 3.rhel.pool.ntp.org iburst
systemctl restart ntpd ntpdate -u 192.168.7.1 ntpq -p systemctl enable ntpd