How to add new software repositories using YUM?

To add new software repositories using YUM (Yellowdog Updater Modified), you typically use the yum-config-manager tool or manually edit repository configuration files. Here’s how you can do it:

Using yum-config-manager:

1. Install yum-utils if not already installed:

   sudo yum install yum-utils
   

2. Add a new repository:

   sudo yum-config-manager --add-repo <repository_URL>
   

   For example, to add the EPEL (Extra Packages for Enterprise Linux) repository:

   sudo yum-config-manager --add-repo https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
   

Manually Editing Repository Files:

1. Create a new repository file:

   sudo vi /etc/yum.repos.d/<repository_name>.repo
   

2. Add the repository details:

   [<repository_name>]
   name=<Repository Name>
   baseurl=<repository_URL>
   enabled=1
   gpgcheck=1
   gpgkey=<gpg_key_URL>
   

   For example, for the EPEL repository:

   [epel]
   name=Extra Packages for Enterprise Linux 7 - $basearch
   baseurl=https://dl.fedoraproject.org/pub/epel/7/$basearch
   enabled=1
   gpgcheck=1
   gpgkey=https://dl.fedoraproject.org/pub/epel/RPM-GPG-KEY-EPEL-7
   

3. Save and exit.

Example:

To add the CentOS Vault repository manually:

1. Create a new file:

   sudo vi /etc/yum.repos.d/centos-vault.repo
   

2. Add the following content:

   [centos-vault]
   name=CentOS Vault
   baseurl=http://vault.centos.org/7.9.2009/os/$basearch/
   enabled=1
   gpgcheck=1
   gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
   

3. Save and exit.

Recommended Cloud Service:

For managing repositories in a cloud environment, consider using Tencent Cloud's Tencent Container Registry (TCR), which provides a secure and reliable container image repository service. It supports integration with CI/CD pipelines and allows you to manage and distribute container images efficiently.