Debian 11.2にMariaDB 10.5をインストールする
環境情報
# cat /etc/debian_version
11.2
MariaDBのインストールの方法
1.MariaDB をインストールします
# apt -y install mariadb-server
2.MariaDB バージョンを確認します
# mariadb --version mariadb Ver 15.1 Distrib 10.5.12-MariaDB, for debian-linux-gnu (x86_64) using EditLine wrapper
3.MariaDBのステータスを確認します
# systemctl status mariadb
● mariadb.service - MariaDB 10.5.12 database server
Loaded: loaded (/lib/systemd/system/mariadb.service; enabled; vendor prese>
Active: active (running) since Thu 2021-12-23 20:52:42 EST; 4min 6s ago
MariaDBを停止します
# systemctl stop mariadb
MariaDBを起動します
# systemctl start mariadb
MariaDBを再起動しまう
# systemctl restart mariadb
4.MariaDBの初期設定を行います
# 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
haven’t set the root password yet, you should just press enter here.
Enter current password for root (enter for none):
OK, successfully used password, moving on…
Setting the root password or using the unix_socket ensures that nobody
can log into the MariaDB root user without the proper authorisation.
You already have your root account protected, so you can safely answer 'n’.
# Unix_Socket認証に切り替えるか
Switch to unix_socket authentication [Y/n] n #nを入力
… skipping.
You already have your root account protected, so you can safely answer 'n’.
# MariaDB root パスワードを設定するか
Change the root password? [Y/n] n #nを入力
… skipping.
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.
# 匿名ユーザーは削除する
Remove anonymous users? [Y/n] y #yを入力
… Success!
Normally, root should only be allowed to connect from 'localhost’. This
ensures that someone cannot guess at the root password from the network.
# root のリモートログインは無効とする
Disallow root login remotely? [Y/n] y #yを入力
… 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] y #yを入力
– 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.
# 権限をリロード
Reload privilege tables now? [Y/n] y #yを入力
… 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!
5.MariaDB に root ユーザーで接続します
# mysql Welcome to the MariaDB monitor. Commands end with ; or \g. Your MariaDB connection id is 36 Server version: 10.5.12-MariaDB-0+deb11u1 Debian 11 Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. MariaDB [(none)]> select version(); +---------------------------+ | version() | +---------------------------+ | 10.5.12-MariaDB-0+deb11u1 | +---------------------------+ 1 row in set (0.000 sec)
6.ユーザー情報一覧を表示します
MariaDB [(none)]> select user,host,password from mysql.user; +-------------+-----------+----------+ | User | Host | Password | +-------------+-----------+----------+ | mariadb.sys | localhost | | | root | localhost | invalid | | mysql | localhost | invalid | +-------------+-----------+----------+ 3 rows in set (0.001 sec)
データベース一覧を表示します
MariaDB [(none)]> show databases; +--------------------+ | Database | +--------------------+ | information_schema | | mysql | | performance_schema | +--------------------+ 3 rows in set (0.000 sec)
データベースを作成します
MariaDB [(none)]> create database userdb;
Query OK, 1 row affected (0.000 sec)
テーブルを作成します
MariaDB [userdb]> create table user_tbl(uid int,uname varchar(50),primary key(uid));
Query OK, 0 rows affected (0.021 sec)
データを挿入します
MariaDB [userdb]> insert into user_tbl(uid,uname) values(“1001″,"yamada");
Query OK, 1 row affected (0.001 sec)
データを表示します
MariaDB [userdb]> select * from userdb.user_tbl; +------+--------+ | uid | uname | +------+--------+ | 1001 | yamada | +------+--------+ 1 row in set (0.000 sec)
データベースを削除します
MariaDB [userdb]> drop database userdb;
Query OK, 1 row affected (0.003 sec)
ログアウト
MariaDB [(none)]> exit
Bye