centos7.9.2009 阿里云： http://mirrors.aliyun.com/centos/7.9.2009/isos/x86_64/ 网易： http://mirrors.163.com/centos/7.9.2009/isos/x86_64/ centos-stream-9 迅雷云盘 https://pan.xunlei.com/s/VNnftfEkaboRDFSjtjXAN7x