以下镜子应该可用的ISO映像:
http://mirrors.aliyun.com/centos/7/isos/x86_64/
http://mirrors.sina.cn/centos/7/isos/x86_64/
../ 0_README.txt 01-Apr-2015 08:30 2685 CentOS-7-x86_64-DVD-1503-01.iso 01-Apr-2015 00:05 4310695936 CentOS-7-x86_64-DVD-1503-01.torrent 01-Apr-2015 02:04 165116 CentOS-7-x86_64-Everything-1503-01.iso 01-Apr-2015 00:26 7591690240 CentOS-7-x86_64-Everything-1503-01.torrent 01-Apr-2015 02:04 290297 CentOS-7-x86_64-LiveCD-1503.iso 31-Mar-2015 09:13 729808896 CentOS-7-x86_64-LiveCD-1503.torrent 31-Mar-2015 13:42 28517 CentOS-7-x86_64-LiveGNOME-1503.iso 31-Mar-2015 11:10 1124073472 CentOS-7-x86_64-LiveGNOME-1503.torrent 31-Mar-2015 13:42 43567 CentOS-7-x86_64-LiveKDE-1503.iso 31-Mar-2015 11:11 1310720000 CentOS-7-x86_64-LiveKDE-1503.torrent 31-Mar-2015 13:42 50681 CentOS-7-x86_64-Minimal-1503-01.iso 01-Apr-2015 00:08 666894336 CentOS-7-x86_64-Minimal-1503-01.torrent 01-Apr-2015 02:04 26126 CentOS-7-x86_64-NetInstall-1503.iso 27-Mar-2015 22:34 377487360 CentOS-7-x86_64-NetInstall-1503.torrent 31-Mar-2015 13:42 15089 md5sum.txt 01-Apr-2015 01:44 481 md5sum.txt.asc 01-Apr-2015 01:51 1341 sha1sum.txt 01-Apr-2015 01:44 537 sha1sum.txt.asc 01-Apr-2015 01:51 1397 sha256sum.txt 01-Apr-2015 01:44 705 sha256sum.txt.asc 01-Apr-2015 01:51 1565
http://wiki.centos.org/AdditionalResources/Repositories