So you want to install MariaDB 5.5 on Centos 6 x86_64. This is the process I used. MariaDB can be a replacement for MySQL. Login to Centos 6 server you want to install MariaDB. Create a repo file. # vi /etc/yum.repos.d/MariaDB.repo and add the information below. [mariadb] name = MariaDB baseurl = http://yum.mariadb.org/5.5/centos6-amd64 gpgkey=https://yum.mariadb.org/RPM-GPG-KEY-MariaDB ..