centos7.4镜像地址

mirror.chpc.utah.edu/pub/vault.centos.org/7.4.1708/isos/x86_64/sha1sum.txt

http://mirror.chpc.utah.edu/pub/vault.centos.org/7.4.1708/isos/x86_64/CentOS-7-x86_64-LiveKDE-1708.iso