mkdir /mnt/cdrom
mount /dev/cdrom /mnt/cdrom
mkdir /etc/yum.repos.d/org
mv /etc/yum.repos.d/CentOS-* /etc/yum.repos.d/org/
vi /etc/yum.repos.d/local.repo
[local-repo]
name=Local Repository
baseurl=file:///mnt/cdrom/
enabled=1
gpgcheck=0
=========================
append IOS file mount for update local repos
mkdir -p /mnt/CentOS7-1908
mount -o loop /R1D1TB1/install/CentOS-7-x86_64-DVD-1908.iso /mnt/CentOS7-1908
vi /etc/yum.repos.d/local.repo
[local-repo]
name=Local Repository
baseurl=file:///mnt/cdrom/
enabled=1
gpgcheck=0
[local-CentOS7-1908]
name=Local Repository CentOS7-1908
baseurl=file:///mnt/CentOS7-1908
enabled=1
gpgcheck=0