华为云自定义私有镜像

一，自定义yum源

 mkdir -p /etc/yum.repos.d/repo_bak/

mv /etc/yum.repos.d/*.repo /etc/yum.repos.d/repo_bak/

 curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.myhuaweicloud.com/repo/CentOS-Base-7.repo

yum makecache

二，安装工具包

yum -y install net-tools lftp rsync psmisc vim bash-completion

三，优化系统服务

systemctl stop ntpd postfix

yum -y remove ntp postfix

四，修改时间服务器

vim /etc/chrony.conf

server ntp.myhuaweicloud.com iburst

systemctl enable chronyd

systemctl start chronyd

来源：https://www.cnblogs.com/jeffzhao/p/11724948.html