MySQL修改账号密码方法大全(小结)

# skip-grant-tables 模式下修改root密码
[root@host ~]# mysql
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 16
Server version: 5.7.23-log MySQL Community Server (GPL)

Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.

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> update mysql.user set authentication_string = password ('xxxxxx') where user = 'root' and host = 'localhost';
Query OK, 0 rows affected, 1 warning (0.00 sec)
Rows matched: 1 Changed: 0 Warnings: 1

mysql> flush privileges;
Query OK, 0 rows affected (0.01 sec)

mysql> alter user 'testuser'@'%' identified by 'Password1';
Query OK, 0 rows affected (0.01 sec)

mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)

mysql> SET PASSWORD FOR 'testuser'@'%' = PASSWORD('Password2');
Query OK, 0 rows affected, 1 warning (0.00 sec)

mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)

[root@host ~]# mysqladmin -utestuser -pPassword2 password Password3
mysqladmin: [Warning] Using a password on the command line interface can be insecure.
Warning: Since password will be sent to server in plain text, use ssl connection to ensure password safety.
[root@host ~]# mysql -utestuser -pPassword3
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 2388
Server version: 5.7.23-log MySQL Community Server (GPL)

Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.

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> 

# 5.7及之后版本
mysql> update mysql.user set authentication_string = password ('Password4') where user = 'testuser' and host = '%';
Query OK, 1 row affected, 1 warning (0.06 sec)
Rows matched: 1 Changed: 1 Warnings: 1

mysql> flush privileges;
Query OK, 0 rows affected (0.01 sec)

# 5.6及之前版本
update mysql.user set password=password('新密码') where user='用户名' and host='host'; 

# 执行回车后需要输入一次root密码
[root@host ~]# mysql_config_editor set --login-path=root -uroot -hlocalhost -p -P3306 
Enter password: 

# 配置完成后可以使用login-path登录
[root@host ~]# mysql --login-path=root
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 2919
Server version: 5.7.23-log MySQL Community Server (GPL)

Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.

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>