Yum commands fail due to the MariaDB 10.2 repository archival.

Symptoms

An error similar to the following is encountered when attempting to run the yum command.

http://yum.mariadb.org/10.2/rhel7-amd64/repodata/repomd.xml: [Errno 14] HTTP Error 404 - Not Found

Description

MariaDB 10.2 is EoL, and the MariaDB 10.2 repository was archived, which changed the location of the repository.

Workaround

1. Access the server's command line as the 'root' user via SSH or "Terminal" in WHM.
2. Open the /etc/yum.repos.d/mariadb.repo file in a text editor.
3. Locate the baseurl entry.

   baseurl = http://yum.mariadb.org/10.2/rhel7-amd64

4. Replace the "yum.mariadb.org" section of the URL with "archive.mariadb.org/yum".

   baseurl = http://archive.mariadb.org/yum/10.2/rhel7-amd64

5. Save the changes and exit the text editor.