缓存rpm包，以make为例

mkdir -p /data/yum
yumdownloader --resolve  --destdir=/data/yum make

制作离线yum包

yum install createrepo -y
cd /data/yum
createrepo .

写yum配置文件/etc/yum.repos.d/local.repo

[local-repo]
name=local-repo
baseurl=file:///data/yum
enabled=1
gpgcheck=0
priority=1

yum repolist all