MariaDB packages provide corresponding symbols with name mysql. It means that as soon as any package requires mysql, yum will actually choose mariadb package to be installed.
🔗 Prerequisities
Remove all mariadb packages (it will remove also all dependencies, so consider doing this step carefully):
# yum remove 'mariadb*'
🔗 Steps
This task consists from several sub-tasks. After every sub-task you'll need to remove installed packages (like described in Prerequisities section above).
Try install mysql-server package:
# yum install mysql-server
Expected result: packages mariadb-server mariadb-libs and mariadb will be installed.
Try install perl-DBD-MySQL package:
# yum install perl-DBD-MySQL
Expected result: packages perl-DBD-MySQL and mariadb-libs will be installed.
Try install akonadi-mysql package:
# yum install akonadi-mysql
Expected result: packages akonadi-mysql, mariadb-server, mariadb and mariadb-libs will be installed.