最新版をインストールするため、リポジトリの追加

# curl -sS https://downloads.mariadb.com/MariaDB/mariadb_repo_setup | bash

インストール

# yum -y install mariadb-server

文字コードを utf8 に変更

# this is only for the mysqld standalone daemon
[mysqld]
character-set-server = utf8

自動起動に登録されているかチェック

# systemctl list-unit-files | grep mariadb

mariadb.service		disabled

自動起動に登録

# systemctl enable mariadb.service

初期化を行うため、mariadb を起動

# systemctl start mariadb

mysql_secure_installation コマンドで初期化を行います

# 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): # パスワード未設定なので [Enter]
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] # [Enter] を押し root のパスワード設定
New password: # パスワード１回目
Re-enter new password: # パスワード２回目
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] # [Enter]を押し匿名ユーザを削除
 ... 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] # [Enter] を押し root のリモートログインを禁止
 ... Success!

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] # [Enter]を押しテスト DB を削除
 - 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] # [Enter]を押し設定を即反映
 ... 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!