mysqladmin: unable to change password； error: ‘Your password does not satisf

装完mysql启动服务，第一次使用需要重置密码，显示我输入的密码"123456"太简单,在个人练习过程中，不想把密码设置太复杂

# grep password /var/log/mysql.log

2022-01-02T05:03:18.625427Z 1 [Note] A temporary password is generated for root@localhost: )Vl+vhJE%9yj

# mysqladmin -uroot -p")Vl+vhJE%9yj" password "123456"
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.
mysqladmin: unable to change password; error: 'Your password does not satisfy the current policy requirements'

解决方案：

# mysql -uroot -p')Vl+vhJE%9yj'

(1)修改validate_password_policy参数值为0(1为开启复杂策略)

注意：此参数(policy)必须优先修改，因为policy策略不修改为0会影响下面的length参数。

mysql> set global validate_password_policy=0;

(2)修改validate_password_length参数值为1

mysql> set global validate_password_length=1;

退出重新修改密码

mysql > exit;

# mysqladmin -uroot -p')Vl+vhJE%9yj' password

输入密码: 123456

确认密码: 123456

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mysqladmin: unable to change password； error: ‘Your password does not satisf

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