chrony
- yum install chrony
[root@HHDDC-P-NTP ~]# sed '/^$/d;/^#/d' /etc/chrony.conf server 0.cn.pool.ntp.org offline server 1.cn.pool.ntp.org offline server 2.cn.pool.ntp.org offline server 3.cn.pool.ntp.org offline driftfile /var/lib/chrony/drift makestep 1.0 3 rtcsync allow all local stratum 10 logdir /var/log/chrony # systemctl start chronyd # systemctl enable chronyd # firewall-cmd --zone=public --add-port=323/udp --permanent # firewall-cmd --reload