ntp服务重启报错Failed to restart ntpd.service: Unit is masked.

问题概述：

重启ntp服务报错Failed to restart ntpd.service: Unit is masked，使用systemctl unmask ntpd.service命令关闭屏蔽还是报错Failed to restart ntpd.service: Unit is masked

解决方法：

重装ntp服务

 yum remove ntp
 yum install ntp
 systemctl start ntpd.service
 systemctl enable ntpd.service
 systemctl status ntpd.service