SQL database

SQL database

Most OpenStack services use an SQL database to store information. The database typically runs on the controller node. The procedures in this guide use MariaDB or MySQL depending on the distribution. OpenStack services also support other SQL databases including PostgreSQL.

Install and configure components

  1. Install the packages:

    # yum install mariadb mariadb-server MySQL-python
  1. Create and edit the /etc/my.cnf.d/mariadb_openstack.cnf file and complete the following actions:

    • In the [mysqld] section, set the bind-address key to the management IP address of the controller node to enable access by other nodes via the management network:

      bind-address =
    • In the [mysqld] section, set the following keys to enable useful options and the UTF-8 character set:

      default-storage-engine = innodb
      collation-server = utf8_general_ci
      init-connect = 'SET NAMES utf8'
      character-set-server = utf8

Finalize installation

  1. Start the database service and configure it to start when the system boots:

    # systemctl enable mariadb.service
    # systemctl start mariadb.service
  1. Secure the database service by running the mysql_secure_installation script.
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