设置开机自动同步Internet时间,并作定时同步任务 1、修改时区
rm -rf /etc/localtime
ln -s /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
vim /etc/sysconfig/clock
ZONE="Asia/Shanghai"
UTC=false
ARC=false
2、安装并设置开机自启
yum install -y ntp
systemctl start ntpd
systemctl enable ntpd
3、配置开机启动校验
vim /etc/rc.d/rc.local
/usr/sbin/ntpdate ntp1.aliyun.com > /dev/null 2>&1; /sbin/hwclock -w
4、配置定时任务
crontab -e
0 */1 * * * ntpdate ntp1.aliyun.com > /dev/null 2>&1; /sbin/hwclock -w