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