阿里源地址：https://developer.aliyun.com/mirror/

CentOS 镜像地址：

https://developer.aliyun.com/mirror/centos?spm=a2c6h.13651102.0.0.3e221b11N4IAnS

CentOS8

shell
wget -O /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-vault-8.5.2111.repo

shell
curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-vault-8.5.2111.repo

CentOS6

shell
wget -O /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-vault-6.10.repo

shell
curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-vault-6.10.repo

CentOS7

shell
wget -O /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-7.repo

shell
curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-7.repo

shell
运行 yum makecache生成缓存

其他 非阿里云ECS用户会出现，Couldn’t resolve host ‘mirrors.cloud.aliyuncs.com’信息，不影响使用。用户也可以自行修改相关配置：

shell
sed -i -e '/mirrors.cloud.aliyuncs.com/d' -e '/mirrors.aliyuncs.com/d' /etc/yum.repos.d/CentOS-Base.repo