openstack-manuals/doc/install-guide/source/environment-sql-database.rst

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.

ubuntu

Note

As of Ubuntu 15.10, MariaDB was changed to use the "unix_socket Authentication Plugin". Local authentication is now preformed using the user credentials (UID) and password authentication is no longer used by default. This means that the root user no longer uses a password for local access to the server.

Install and configure components

1. Install the packages:

   ubuntu

   # apt install mariadb-server python-pymysql

   debian

   # apt install mysql-server python-pymysql

   rdo

   # yum install mariadb mariadb-server python2-PyMySQL

   obs

   # zypper install mariadb-client mariadb python-PyMySQL

debian

2. Create and edit the /etc/mysql/conf.d/openstack.cnf file and complete the following actions:

   • Create a [mysqld] section, and set the bind-address key to the management IP address of the controller node to enable access by other nodes via the management network. Set additional keys to enable useful options and the UTF-8 character set:

     [mysqld]
     bind-address = 10.0.0.11
     
     default-storage-engine = innodb
     innodb_file_per_table = on
     max_connections = 4096
     collation-server = utf8_general_ci
     character-set-server = utf8

ubuntu

2. Create and edit the /etc/mysql/mariadb.conf.d/99-openstack.cnf file and complete the following actions:

   • Create a [mysqld] section, and set the bind-address key to the management IP address of the controller node to enable access by other nodes via the management network. Set additional keys to enable useful options and the UTF-8 character set:

     [mysqld]
     bind-address = 10.0.0.11
     
     default-storage-engine = innodb
     innodb_file_per_table = on
     max_connections = 4096
     collation-server = utf8_general_ci
     character-set-server = utf8

obs or rdo

2. Create and edit the /etc/my.cnf.d/openstack.cnf file and complete the following actions:

   • Create a [mysqld] section, and set the bind-address key to the management IP address of the controller node to enable access by other nodes via the management network. Set additional keys to enable useful options and the UTF-8 character set:

     [mysqld]
     bind-address = 10.0.0.11
     
     default-storage-engine = innodb
     innodb_file_per_table = on
     max_connections = 4096
     collation-server = utf8_general_ci
     character-set-server = utf8

Finalize installation

ubuntu or debian

1. Restart the database service:

   # service mysql restart

rdo or obs

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

   rdo

   # systemctl enable mariadb.service
   # systemctl start mariadb.service

   obs

   # systemctl enable mysql.service
   # systemctl start mysql.service

rdo or obs or ubuntu

2. Secure the database service by running the mysql_secure_installation script. In particular, choose a suitable password for the database root account.

   # mysql_secure_installation