CentOS / RHEL 7 : How to setup yum repository using locally mounted DVD

1. Mount the RHEL 7 installation media ISO to some directory. For example /mnt :

# mount -o loop rhel7.iso /mnt

2. Copy the media.repo file from the mounted directory /mnt /etc/yum.repos.d/ and name it as rhel7.repo.

# cp /mnt/media.repo /etc/yum.repos.d/rhel7.repo

3. Give appropriate permissions to the repository file.

# chmod 644 /etc/yum.repos.d/rhel7.repo

4. Modify the repo file and change the parameter gpgcheck=0 to gpgcheck=1 and add below 3 lines to the same file.

enabled=1
baseurl=file:///mnt/
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release

5. Once you have done all the changes, the final repo file shiould look like below.( Note that – media-id may be different depending on the version of RHEL for which DVD is used)

[InstallMedia]
name=DVD for Red Hat Enterprise Linux 7.3 Server
mediaid=9859238196.834790
metadata_expire=-1
gpgcheck=1
cost=500
enabled=1
baseurl=file:///mnt/
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release

6. Make sure you clear the related caches by yum clean all and subscription-manager clean once.

# yum clean all
# subscription-manager clean