1.查看系统是否安装ntp 安装命令为:yum install ntp
2.apf -f -------关闭防火墙
3.备份clock和localtime
cp /etc/localtime /etc/localtime.bak
cp /etc/sysconfig/clock /etc/sysconfig/clock.bak
rm /etc/localtime
ln -sf /usr/share/zoneinfo/UTC /etc/localtime
vi /etc/sysconfig/clock 配置如下
ZONE="UT