sudo systemctl stop ntpd.service
sudo ntpdate pool.ntp.org
sudo systemctl start ntpd.service
ntpstat
systemctl stop ntpd.service && ntpdate pool.ntp.org && systemctl start ntpd.service
同步阿里时钟:
systemctl stop ntpd.service && ntpdate ntp1.aliyun.com && systemctl start ntpd.service