Configure YUM repository using DVD or CD ROM CentOS / RHEL

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YUM is the package management tool that helps to install or update the package through the network or local, the same time it provides an easy method to install a package with its dependent packages.

Configuration files are under /etc directory, /etc/yum.conf is the mail global file that contains the global options such as cache directory, computer log directory, etc… To add new or update the existing repository, you need to go the /etc/repos.d directory and create or open a file that ends on .repo respectively.

This document is applicable to both CentOS version, 7 and 6.

Create Source

Before creating new repository file, you must know the repository source ( where the packages stored locally or remotely). The repository sources can be created either using a createrepo package or mounting the DVD on the directory. Mounting the DVD/CD ROM will lead to saving the space on HDD used by being copied to HDD.

Create a directory to mount CD/DVD ROM. For Example.

mkdir /cdrom

Mount the CD/DVD ROM on any directory of your wish, for testing, mount it on /cdrom.

mount /dev/cdrom /cdrom

Configuration file

Before creating a new repo configuration file, I request you to move the default OS repository files to some other directory or remove the unwanted repository file.

Create the new repo file called cdrom.repo under /etc/yum.repos.d directory.

vi /etc/yum.repos.d/cdrom.repo

Add the following details.

[cdrom]
name=CDROM Repo
baseurl=file:///cdrom
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release

Where,

[cdrom] = Name of the Section.
name = Name of the repository
baseurl = Location of the package
Enabled = Enable repository
gpgcheck = Enable secure installation
gpgkey = Location of the key

Package Installation

Install any package using the yum command. For example, let us install the VsFTPD package using the YUM.

yum install vsftpd

Output:

Loaded plugins: fastestmirror
cdrom                                                                                   | 3.6 kB  00:00:00
(1/2): cdrom/group_gz                                                                   | 156 kB  00:00:00
(2/2): cdrom/primary_db                                                                 | 3.1 MB  00:00:00
Loading mirror speeds from cached hostfile
Resolving Dependencies
--> Running transaction check
---> Package vsftpd.x86_64 0:3.0.2-22.el7 will be installed
--> Finished Dependency Resolution

Dependencies Resolved

===============================================================================================================
 Package                 Arch                    Version                          Repository              Size
===============================================================================================================
Installing:
 vsftpd                  x86_64                  3.0.2-22.el7                     cdrom                  169 k

Transaction Summary
===============================================================================================================
Install  1 Package

Total download size: 169 k
Installed size: 348 k
Is this ok [y/d/N]: y
Downloading packages:
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
  Installing : vsftpd-3.0.2-22.el7.x86_64                                                                  1/1
  Verifying  : vsftpd-3.0.2-22.el7.x86_64                                                                  1/1

Installed:
  vsftpd.x86_64 0:3.0.2-22.el7

Complete!

That’s all. You have successfully configured the local repository on the machine. But, it is limited to the single machine where the CD or DVD is mounted.

Further Reading

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Configure YUM repository using DVD or CD ROM CentOS / RHEL

5