15-09-2021

docs/MySQL/users.md

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+# Utilisateurs
+
+
+
+### Voir tous les utilisateurs MySQL:
+
+ainsi que les hosts auxquels ils ont le droit de se connecter.
+
+```mysql
+MariaDB [(none)]> SELECT user,host from mysql.user;
++-----------------+-----------+
+| User            | Host      |
++-----------------+-----------+
+| adm_wp          | localhost |
+| bruno           | localhost |
+| mariadb.sys     | localhost |
+| mysqlbackupuser | localhost |
+| newuser         | localhost |
+| root            | localhost |
++-----------------+-----------+
+6 rows in set (0.001 sec)
+```
+
+on affiche également les mots-de-passe.
+
+```mysql
+MariaDB [(none)]> SELECT host,user,password FROM mysql.user;
+
+# MySQL 5.7+
+MariaDB [(none)]> SELECT host,user,authentication_string FROM mysql.user;
+```
+
+
+
+### Créer un utilisateur:
+
+`mysql> CREATE USER theuser;`
+
+```mysql
+MariaDB [(none)]> CREATE USER 'theuser'@'localhost' IDENTIFIED BY 'the_password';
+```
+
+Lui donner tous les droits:
+
+```mysql
+MariaDB [(none)]> GRANT ALL PRIVILEGES ON * . * TO 'theuser'@'localhost';
+MariaDB [(none)]> FLUSH PRIVILEGES
+```
+
+
+
+### Supprimer un utilisateur:
+
+`mysql> DROP USER theuser;`
+
+```mysql
+MariaDB [(none)]> DROP USER 'theuser'@'localhost';
+Query OK, 0 rows affected (0.023 sec)
+```
+
+
+
+### Renommer un utilisateur:
+
+`mysql> RENAME USER theuser;`
+
+```mysql
+MariaDB [(none)]> RENAME USER 'theuser'@'localhost' TO 'the_user'@'localhost';
+Query OK, 0 rows affected (0.038 sec)
+```
+