使用ISO文件搭建本地yum源

1）关闭selinux

vi /etc/selinux/config
    selinux=disabled
reboot

2）创建挂载点，并挂载镜像

mkdir -p /mnt/iso
mount -t iso9660 /home/CentOS-7-x86_64-Everything-1804.iso /mnt/iso

3）修改CentOS-Media.repo

cd /etc/yum.repos.d/
mkdir backup
mv * ./backup
vi CentOS-Local.repo
    [Local]
    name=Localrepo
    baseurl=file:///mnt/iso
    gpgcheck=0
    enabled=1

4）清除并重建cache

yum clean all
yum makecache
yum repolist