centos7 自动同步时间

rm -rf /etc/localtime

ln -s /usr/share/zoneinfo/Asia/Shanghai /etc/localtime

vim /etc/sysconfig/clock

ZONE= "Asia/Shanghai"

UTC= false

ARC= false

 

 

yum install -y ntp

systemctl start ntpd

systemctl enable ntpd

 

vim /etc/rc.d/rc.local

/usr/sbin/ntpdate ntp1.aliyun.com > /dev/ null 2 >& 1 ; /sbin/hwclock -w

 

crontab -e

0 */ 1 * * * ntpdate ntp1.aliyun.com > /dev/ null 2 >& 1 ; /sbin/hwclock -w