ERROR 1820 (HY000): You must reset your password using ALTER USER statement

mysql执行语句报错

mysql> use mysql;
ERROR 1820 (HY000): You must reset your password using ALTER USER statement before executing this statement.
mysql> show databases;
ERROR 1820 (HY000): You must reset your password using ALTER USER statement before executing this statement.

提示要用ALTER USER修改密码才可以但是如果想要设置非常简单的密码，比如123456会提示密码不符合要求

mysql> alter user 'root'@'localhost' identified by '123456';
ERROR 1819 (HY000): Your password does not satisfy the current policy requirements

/ / 但是修改这个参数会报错，没有这个系统变量
mysql> set global validate_password_policy=0;
ERROR 1193 (HY000): Unknown system variable 'validate_password_policy'

添加参数

这个时候就得去修改一下mysql的配置文件

[root@zheng ~]# vi /etc/my.cnf
[mysqld] ## 在mysqld文本段里添加这两行
#添加密码验证插件
plugin-load-add=validate_password.so

#服务器在启动时加载插件，并防止在服务器运行时删除插件
validate-password=FORCE_PLUS_PERMANENT

"/etc/my.cnf" 34L, 1167C written
[root@zheng ~]# systemctl restart mysqld / / 修改完重启mysql
[root@zheng ~]# mysql -uroot -p
Enter password: 密码123

修改参数值

修改validate_password_policy参数的值
validate_password_length(密码长度)参数默认为8，我们修改为1

mysql> set global validate_password_policy=0;
Query OK, 0 rows affected (0.00 sec)

mysql> set global validate_password_length=1;
Query OK, 0 rows affected (0.00 sec)

mysql> alter user 'root'@'localhost' identified by '123456';
Query OK, 0 rows affected (0.00 sec)

mysql安装成功

这里说一下，我这用的是5.7版本的，mysql8.0是不支持这么修改的

mysql> status
--------------
mysql Ver 14.14 Distrib 5.7.30, for Linux (x86_64) using EditLine wrapper

Connection id:          5
Current database:
Current user:           root@localhost
SSL:                    Not in use
Current pager:          stdout
Using outfile:          ''
Using delimiter:        ;
Server version:         5.7.30
Protocol version:       10
Connection:             Localhost via UNIX socket
Server characterset:    latin1
Db     characterset:    latin1
Client characterset:    utf8
Conn. characterset:    utf8
UNIX socket:            /var/lib/mysql/mysql.sock
Uptime:                 1 hour 58 min 34 sec

Threads: 1 Questions: 26 Slow queries: 0 Opens: 106 Flush tables: 1 Open tables: 99 Queries per second avg: 0.00

8.0mysql版本修改参数设置

mysql> set global validate_password.policy=0;
mysql> set global validate_password.length=1;

————————————————
版权声明：本文为CSDN博主「平平无奇子」的原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接及本声明。
原文链接：https://blog.csdn.net/qq_44792624/article/details/107426590

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