下载安装介质
ntp-4.2.6p5-29.el7.centos.2.x86_64.rpm
ntpdate-4.2.6p5-29.el7.centos.2.x86_64.rpm
开始安装
rpm -ivh ntpdate-4.2.6p5-29.el7.centos.2.x86_64.rpm
rpm -ivh ntp-4.2.6p5-29.el7.centos.2.x86_64.rpm
设置配置
vim /etc/ntp.conf
systemctl restart ntpd
systemctl enable ntpd
systemctl status ntpd
查看同步情况
ntpq -pn