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Chapter 10. Managing custom software repositories
You can configure a repository in the /etc/yum.conf file. or in a .repo file in the /etc/yum.repos.d/ directory.
It is recommended to define your repositories in the new or existing .repo file in /etc/yum.repos.d/ because all files with the .repo file extension are read by YUM.
The /etc/yum.conf file contains the [main] sections and can contain one or more repository sections ([<repository_ID>]) that you can use to set repository-specific options. The values you define in individual repository sections of the /etc/yum.conf file override values set in the [main] section.
10.1. YUM repository options
The /etc/yum.conf configuration file contains the repository sections with a repository ID in brackets ([<repository_ID>]). You can use these sections to define individual YUM repositories.
Repository IDs must be unique.
For a complete list of available repository ID options, see the [<repository_ID>] OPTIONS section of the dnf.conf(5) man page on your system.
10.2. Adding a YUM repository
You can add a YUM repository to your system by defining it in the .repo file in the /etc/yum.repos.d/ directory.
Procedure
Add a repository to your system:
# yum-config-manager --add-repo <repository_URL>Note that repositories added by this command are enabled by default.
Review and, optionally, update the repository settings that the previous command has created in the
/etc/yum.repos.d/<repository_URL>.repofile:# cat /etc/yum.repos.d/<repository_URL>.repo
Obtaining and installing software packages from unverified or untrusted sources other than Red Hat certificate-based Content Delivery Network (CDN) is a potential security risk, and can lead to security, stability, compatibility, and maintainability issues.
10.3. Enabling a YUM repository
Once you added a YUM repository to your system, enable it to ensure installation and updates.
Procedure
Enable a repository:
# yum-config-manager --enable <repository_id>
10.4. Disabling a YUM repository
To to prevent particular packages from installation or update, you can disable a YUM repository that contains these packages.
Procedure
Disable a repository:
# yum-config-manager --disable <repository_id>
