#更新阿里源
cd /etc/yum.repos.d/
curl -L -O https://mirrors.aliyun.com/repo/Centos-7.repo && mv ./Centos-7.repo /etc/yum.repos.d/CentOS-Base.repo
sed -i -e '/mirrors.cloud.aliyuncs.com/d' -e '/mirrors.aliyuncs.com/d' /etc/yum.repos.d/CentOS-Base.repo
curl -L -O http://mirrors.aliyun.com/repo/epel-7.repo && mv ./epel-7.repo /etc/yum.repos.d/epel.repo
yum clean all && yum makecache
yum install -y epel-*
#安装chrony
rpm -qa | grep chrony
yum -y remove chrony
yum -y install chrony
#设置时区上海
timedatectl set-timezone Asia/Shanghai
date
mv /etc/localtime /etc/localtime.bak
ln -s /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
timedatectl set-timezone Asia/Shanghai