CentOS 7安装教程（图文详解）https://blog.csdn.net/qq_44714603/article/details/88829423 CentOS-7-x86_64-bin-DVD1.iso下载https://blog.csdn.net/chengxuhaha/article/details/105480782 http://isoredirect.centos.org/centos/7/isos/x86_64/CentOS-7-x86_64-DVD-1908.iso
