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Set up yum repository for locally-mounted DVD on Red Hat Enterprise Linux 7


Red Hat Enterprise Linux 7 Issue

How to set up yum repository to use locally-mounted DVD with Red Hat Enterprise Linux (RHEL) 7
Would like to upgrade server from RHEL 7.x to RHEL 7.y
Have a secure environment that will never be connected to the internet, but still needs to be updated
Way to update the packages on server, with no satellite server and servers disconnected from internet
Offline patches for Red Hat systems
How do I create a local repository in RHEL 7?


Please note: If the system is registered to Red Hat Network, yum can be run with the --noplugins option to prevent it from connecting to RHN. The safer option would be to unregister the system to avoid updating to the latest release.

    Mount the RHEL 7 installation ISO to a directory like /mnt, e.g.:
# mount -o loop RHEL7.1.iso /mnt
    If you use DVD media , you can mount like below.
# mount -o loop /dev/sr0  /mnt
    Copy the media.repo file from the root of the mounted directory to /etc/yum.repos.d/ and set the permissions to something sane, e.g.:
# cp /mnt/media.repo /etc/yum.repos.d/rhel7dvd.repo
# chmod 644 /etc/yum.repos.d/rhel7dvd.repo
    Edit the new repo file, changing the gpgcheck=0 setting to 1 and adding the following 3 lines
    In the end, the new repo file could look like the following (though the mediaid will be different depending on the version of RHEL):
name=DVD for Red Hat Enterprise Linux 7.1 Server
    clear the related caches by yum clean all and subscription-manager clean once
# yum clean all
# subscription-manager clean
    check whether you can get the packages list from the DVD repo
# yum list --noplugin
    if no problem , you wil update
# yum update --noplugin
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