CentOS Stream 9 にMySQL8.0.29の初期設定方法
環境
OSバージョンの確認
# cat /etc/redhat-release
CentOS Stream release 9
MySQLバージョンの確認
# mysqld --version /usr/sbin/mysqld Ver 8.0.29 for Linux on x86_64 (MySQL Community Server - GPL)
MySQLの初期設定方法
1.MySQL初期設定を行います
# mysql_secure_installation Securing the MySQL server deployment. Enter password for user root: Error: Access denied for user 'root'@'localhost' (using password: YES) [root@localhost arte]# mysql_secure_installation Securing the MySQL server deployment. Enter password for user root: #一時パスワード入力 The existing password for the user account root has expired. Please set a new password. New password: #英大文字小文字記号のパスワード入力 Re-enter new password: #英大文字小文字記号のパスワード入力 The 'validate_password' component is installed on the server. The subsequent steps will run with the existing configuration of the component. Using existing password for root. Estimated strength of the password: 100 # パスワードの強度 100 Change the password for root ? ((Press y|Y for Yes, any other key for No) : y o you wish to continue with the password provided?(Press y|Y for Yes, any other key for No) : y By default, a MySQL installation has an anonymous user, allowing anyone to log into MySQL 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. # 匿名ユーザーを削除するか？ Remove anonymous users? (Press y|Y for Yes, any other key for No) : 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. # リモートからの root へのログインを禁止するか Disallow root login remotely? (Press y|Y for Yes, any other key for No) : y Success. By default, MySQL 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. # テスト用データベースを削除するか Remove test database and access to it? (Press y|Y for Yes, any other key for No) : 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. # 特権テーブルをリロードするか？ Reload privilege tables now? (Press y|Y for Yes, any other key for No) : y Success. All done!
2.MySQLに接続して確認します
# mysql -u root -p Enter password: #パスワード入力 Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 14 Server version: 8.0.29 MySQL Community Server - GPL Copyright (c) 2000, 2022, Oracle and/or its affiliates. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql>
3.文字コードの設定を確認します
mysql> show variables like "chara%"; +--------------------------+--------------------------------+ | Variable_name | Value | +--------------------------+--------------------------------+ | character_set_client | utf8mb4 | | character_set_connection | utf8mb4 | | character_set_database | utf8mb4 | | character_set_filesystem | binary | | character_set_results | utf8mb4 | | character_set_server | utf8mb4 | | character_set_system | utf8mb3 | | character_sets_dir | /usr/share/mysql-8.0/charsets/ | +--------------------------+--------------------------------+ 8 rows in set (0.29 sec)