sudo mkdir /mnt/isosudo mount -o loop CentOS-7-x86_64-Minimal-1810.iso /mnt/iso下载地址： http://mirrors.sohu.com/centos/7.6.1810/isos/x86_64/CentOS-7-x86_64-Minimal-1810.iso
df -hsudo touch /etc/yum.repos.d/local.repo[local_server]
name=Thisis a local repo
baseurl=file:///mnt/iso
enabled=1
gpgcheck=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7yum clean all
yum makecache原文：https://www.cnblogs.com/wangkai333/p/11832930.html