Database
Most OpenStack
services require a database to store information. These examples
use a MySQL database that runs on the controller node. You must
install the MySQL database on the controller node. You must
install the MySQL Python library on any additional nodes that
access MySQL.
Most OpenStack services require a
database to store information. This guide uses a MySQL database
on SUSE Linux Enterprise Server and a compatible database on
openSUSE running on the controller node. This compatible
database for openSUSE is MariaDB. You must install the MariaDB
database on the controller node. You must install the MySQL
Python library on any additional nodes that access MySQL or MariaDB.
Controller setup
For SUSE Linux Enterprise Server:
On the controller node, install the MySQL client and
server packages, and the Python library.
# zypper install mysql-client mysql python-mysql
For openSUSE: On the controller node,
install the MariaDB client and database server packages,
and the MySQL Python library.
# zypper install mariadb-client mariadb python-mysql
# apt-get install python-mysqldb mysql-server
# yum install mysql mysql-server MySQL-python
When you install the server package, you are prompted
for the root password for the database. Choose a strong
password and remember it.
The MySQL configuration requires some changes to work with
OpenStack.
Edit the
/etc/mysql/my.cnf file:
Edit the
/etc/my.cnf file:
Under 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:
[mysqld]
...
bind-address = 10.0.0.11
Under the [mysqld] section, set the
following keys to enable InnoDB, UTF-8 character set, and
UTF-8 collation by default:
[mysqld]
...
default-storage-engine = innodb
innodb_file_per_table
collation-server = utf8_general_ci
init-connect = 'SET NAMES utf8'
character-set-server = utf8
Restart the MySQL service to apply
the changes:
# service mysql restart
Start the MySQL
MariaDB or MySQL database
server and set it to start automatically when the system
boots:
# service mysqld start
# chkconfig mysqld on
# service mysql start
# chkconfig mysql on
Finally, you should
set a root password for your MySQL
MariaDB or MySQL database.
The OpenStack programs that set up databases and tables prompt
you for this password if it is set.
You must
delete the anonymous users that are created when the database is
first started. Otherwise, database connection problems occur
when you follow the instructions in this guide. To do this, use
the mysql_secure_installation command.
Note that if mysql_secure_installation fails
you might need to use mysql_install_db first:
# mysql_install_db
# mysql_secure_installation
If you have
not already set a root database password, press
ENTER when you are prompted for the
password. This command presents a number of options
for you to secure your database installation. Respond
yes to all prompts unless you have a
good reason to do otherwise.
Node setup
On all nodes other than the controller node, install the
MySQL Python library:
# apt-get install python-mysqldb
# yum install MySQL-python
# zypper install python-mysql