前提

WordPress をインストールする前に WordPress 用の DB を構築するよ。

環境

Ubuntu 22.04
Nginx 1.22.1
MariaDB 10.6.11

MariaDB のインストールはこっちを見てね。

設定

設定前の確認

$ sudo mysql -u root -p

MariaDB [(none)]> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
| sys                |
+--------------------+
4 rows in set (0.016 sec)

MariaDB [(none)]> select user,host from mysql.user;
+-------------+-----------+
| User        | Host      |
+-------------+-----------+
| mariadb.sys | localhost |
| mysql       | localhost |
| root        | localhost |
+-------------+-----------+
3 rows in set (0.001 sec)

データベースの作成

MariaDB [(none)]> create database wordpress;

ユーザの作成

MariaDB [(none)]> create user 'wpuser'@'localhost' identified by 'p@ssw0rd';

アクセス権の付与（特権ユーザ）

MariaDB [(none)]> grant all on wordpress.* to 'wpuser'@'localhost' with grant option;

確認

MariaDB [(none)]> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
| sys                |
| wordpress          |
+--------------------+
5 rows in set (0.002 sec)

MariaDB [(none)]> select user,host from mysql.user;
+-------------+-----------+
| User        | Host      |
+-------------+-----------+
| mariadb.sys | localhost |
| mysql       | localhost |
| root        | localhost |
| wpuser      | localhost |
+-------------+-----------+
4 rows in set (0.002 sec)

設定保存

MariaDB [(none)]> flush privileges;
MariaDB [(none)]> quit