MariaDB is a fork of the popular cross-platform MySQL database management system and is considered a full drop-in replacement for MySQL. MariaDB was created by one of MySQL’s original developers in 2009 after MySQL was acquired by Oracle during the Sun Microsystems merger. Today MariaDB is maintained and developed by the MariaDB Foundation and community contributors with the intention of it remaining GNU GPL software.

How to Install MariaDB on CentOS 7-Devlabs & Wiki

MariaDB replaced MySQL as the default database system in the CentOS 7 repositories. Though installing MySQL into CentOS 7 is not difficult (see our MySQL CentOS 7 guide for instructions), if you simply need a database MariaDB is recommended for official support and a minimal chance of incompatibilities with other repository software.

{{< note >}} This guide is written for a non-root user. Commands that require elevated privileges are prefixed with sudo. If you’re not familiar with the sudo command, you can check our Users and Groups guide. {{< /note >}}

Before You Begin

  1. Ensure that you have followed the Getting Started and Securing Your Server guides, and the Linode’s hostname is set.To check your hostname run:The first command should show your short hostname, and the second should show your fully qualified domain name (FQDN).
  2. Update your system:

Install and Start MariaDB

Enable MariaDB to start on boot and then start the service:

MariaDB will bind to localhost ( by default. For information on connecting to a remote database using SSH, see our MySQL remote access guide, which also applies to MariaDB.

{{< note >}} Allowing unrestricted access to MariaDB on a public IP not advised but you may change the address it listens on by modifying the bind-address parameter in /etc/my.cnf. If you decide to bind MariaDB to your public IP, you should implement firewall rules that only allow connections from specific IP addresses. {{< /note >}}

Harden MariaDB Server

  1. Run the mysql_secure_installation script to address several security concerns in a default MariaDB installation:

You will be given the choice to change the MariaDB root password, remove anonymous user accounts, disable root logins outside of localhost, and remove test databases. It is recommended that you answer yes to these options. You can read more about the script in the MariaDB Knowledge Base.

Using MariaDB

The standard tool for interacting with MariaDB is the mariadb client, which installs with the mariadb-serverpackage. The MariaDB client is used through a terminal.

Root Login

  1. To log in to MariaDB as the root user:
  2. When prompted, enter the root password you assigned when the mysql_secure_installation script was run.You’ll then be presented with a welcome header and the MariaDB prompt as shown below:
  3. To generate a list of commands for the MariaDB prompt, enter \h. You’ll then see:

Create a New MariaDB User and Database

  1. In the example below, testdb is the name of the database, testuser is the user, and password is the user’s password:You can shorten this process by creating the user while assigning database permissions:
  2. Then exit MariaDB:

Create a Sample Table

  1. Log back in as testuser:
  2. Create a sample table called customers. This creates a table with a customer ID field of the type INT for integer (auto-incremented for new records, used as the primary key), as well as two fields for storing the customer’s name:
  3. View the new table:
  4. Then exit MariaDB:

Reset the MariaDB Root Password

If you forget your root MariaDB password, it can be reset.

  1. Stop the current MariaDB server instance, then restart it with an option to not ask for a password:
  2. Reconnect to the MariaDB server with the MariaDB root account:
  3. Use the following commands to reset root’s password. Replace password with a strong password:
  4. Then restart MariaDB:

Tune MariaDB

MySQL Tuning Primer can be used to optimize your MariaDB server. Ideally, the MariaDB instance should have been operating for at least 24 hours before running the tuner. The longer the instance has been running, the better advice MySQL Tuner will give.

  1. The script needs the bc language installed:
  2. Download MySQL Tuner to your home directory and make it executable:
  3. To run it:You will be asked if you would like to run the script against a different MySQL socket than /var/lib/mysql/mysql.sock. Select N. You will then be asked if you have your login. Enter y, then the credentials when asked.

MySQL Tuning Primer is an excellent starting point to optimize a MariaDB server but it would be prudent to perform additional research for configurations tailored to the application(s) utilizing MariaDB on your Linode.