MySQL修改账号密码方法大全(小结)(2)-木庄网络博客

使用 mysqladmin 命令修改账号密码格式为 mysqladmin -u用户名 -p旧密码 password 新密码

[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>

直接 update user 表

其实 MySQL 所以的账号信息都存储在 mysql.user 表里面，我们也可以直接通过 update user 表来修改密码。

# 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';

3.设置 login-path 本地快捷登陆

为了防止密码暴露及忘记密码，我们还可以设置 login-path 来实现在本地不输密码快捷登录。

login-path 是 MySQL 5.6 开始支持的新特性。通过借助 mysql_config_editor 工具将登陆 MySQL 服务的认证信息加密保存在 .mylogin.cnf 文件（默认位于用户主目录）。MySQL 客户端工具可通过读取该加密文件连接 MySQL ，实现快捷登录。

假设我们想配置 root 账号在本地快捷登录，可以这么做：

# 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>