centos7 installation source 设置安装源
centos7 installation source 设置安装源
中科大源（最快）
https://mirrors.ustc.edu.cn/centos/7/os/x86_64
阿里源（备用）
https://mirrors.aliyun.com/centos/7/os/x86_64
请勿勾选This URL refers to a mirror list.
中科大源（最快）
https://mirrors.ustc.edu.cn/centos/7/os/x86_64
阿里源（备用）
https://mirrors.aliyun.com/centos/7/os/x86_64
请勿勾选This URL refers to a mirror list.
