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mysql8.0

Last updated at Posted at 2021-11-10

####ubuntuでインストール

sudo apt install mysql-server

####パスワード初期化など

sudo mysql-secure-installation

####ログイン

sudo mysql -u root -p

sudoが必要なので注意
####ユーザー作成

create user 'tomoya'@'localhost' identified by 'Password1!';
create user 'tomoya'@'%' identified by 'Password1!';

####権限付与

grant all on *.* to 'tomoya'@'localhost' with grant option;
grant all on *.* to 'tomoya'@'%' with grant option;

allはすべての権限を意味している。はじめの*はデータベース、次の*はテーブルを意味している。
%は外部サーバーからの権限行使の許可を意味している。

####認証プラグインの確認

select user,host,plugin from mysql.user;

デフォルトで認証プラグインはcaching_sha2_passwordになっているので変更する
####認証プラグインの変更

alter user 'tomoya'@'localhost' identified with mysql_native_password by 'Password1!';
alter user 'tomoya'@'%' identified with mysql_native_password by 'Password1!';
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