How To Install MariaDB 5.5 on CentOS 6

Step #1: Add the MariaDB Repository


First, you’ll follow a simple best practice: ensuring the list of available packages is up to date before installing anything new:

yum -y update


Now find which repo you should use with the MariaDB repository generator. We’re going to add the CentOS 6 (64 bit) MariaDB 5.5 repository.

 

vim /etc/yum.repos.d/MariaDB55.repo

# MariaDB 5.5 CentOS repository list – created 2014-10-03 15:57 UTC
# http://mariadb.org/mariadb/repositories/
[mariadb]
name = MariaDB
baseurl = http://yum.mariadb.org/5.5/centos6-amd64
gpgkey=https://yum.mariadb.org/RPM-GPG-KEY-MariaDB
gpgcheck=1


Then exit and save the file with the command :wq .

Step #2: Remove the Existing MySQL Installation

In some cases a manual uninstall of mysql is necessary. Be sure to backup MySQL before proceeding with the following instructions!


Stop MySQL:

service mysqld stop


Remove the existing MySQL packages:

yum -y remove mysql-server mysql


Step #3: Install MariaDB


At this point, installing MariaDB is as simple as running just one command:

yum -y install mysql-server mysql


And then start MySQL, now MariaDB, again:

service mysql start


Run mysql_upgrade:

mysql_upgrade


Verify MySQL is now MariaDB by using the command client:

mysql

Welcome to the MariaDB monitor. Commands end with ; or \g.
Your MariaDB connection id is 2
Server version: 5.5.39-MariaDB MariaDB Server

Copyright (c) 2000, 2014, Oracle, Monty Program Ab and others.

Type ‘help;’ or ‘\h’ for help. Type ‘\c’ to clear the current input statement.

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