配置 SQL 数据库
（1）安装 MariaDB、MariaDB服务器 和 Python 2 PyMySQL
controller
yum install mariadb mariadb-server python2-PyMySQL -y
（2）配置数据库文件
controller
vi /etc/my.cnf.d/openstack.cnf
添加以下内容
[mysqld]
bind-address = 192.168.100.10 # 指定数据库服务器绑定的 IP 地址
default-storage-engine = innodb # 指定了默认的存储引擎为 InnoDB。
innodb_file_per_table = on # 设置了 InnoDB 存储引擎的表空间管理方式。当设置为 "on" 时，每个表都会有自己的独立表空间文件。
max_connections = 4096 # 设置了 MySQL 或 MariaDB 服务器允许的最大并发连接数。
collation-server = utf8_general_ci # 设置了服务器的默认字符集校对规则。
character-set-server = utf8 # 设置了服务器的默认字符集为 UTF-8。
开启 mariadb 服务并设置开机自启动
systemctl start mariadb.service && systemctl enable mariadb.service
初始化数据库
mysql_secure_installation
NOTE: RUNNING ALL PARTS OF THIS SCRIPT IS RECOMMENDED FOR ALL MariaDB
SERVERS IN PRODUCTION USE! PLEASE READ EACH STEP CAREFULLY!
In order to log into MariaDB to secure it, we'll need the current
password for the root user. If you've just installed MariaDB, and
you haven't set the root password yet, the password will be blank,
so you should just press enter here.
Enter current password for root (enter for none):
OK, successfully used password, moving on...
Setting the root password ensures that nobody can log into the MariaDB
root user without the proper authorisation.
Set root password? [Y/n] y
New password:
Re-enter new password:
Password updated successfully!
Reloading privilege tables..
... Success!
By default, a MariaDB installation has an anonymous user, allowing anyone
to log into MariaDB without having to have a user account created for
them. This is intended only for testing, and to make the installation
go a bit smoother. You should remove them before moving into a
production environment.
Remove anonymous users? [Y/n] y
... Success!
Normally, root should only be allowed to connect from 'localhost'. This
ensures that someone cannot guess at the root password from the network.
Disallow root login remotely? [Y/n] n
... skipping.
By default, MariaDB comes with a database named 'test' that anyone can
access. This is also intended only for testing, and should be removed
before moving into a production environment.
Remove test database and access to it? [Y/n] y
- Dropping test database...
... Success!
- Removing privileges on test database...
... Success!
Reloading the privilege tables will ensure that all changes made so far
will take effect immediately.
Reload privilege tables now? [Y/n] y
... Success!
Cleaning up...
All done! If you've completed all of the above steps, your MariaDB
installation should now be secure.
Thanks for using MariaDB!
登录 MySQL 验证是否成功
mysql -p