centos7 mysql 各种报错

1、重置root密码

     vi /etc/my.cnf

    添加skip-grant-tables

   service mysqld restart

    

2、mysql 登录

     报错1

        Unknown system variable 'validate_password_policy'      

    报错2

      命令行无法输入命令提示 You must reset your password using ALTER USER statement before executing this statement.

   报错3

     ERROR 1819 (HY000): Your password does not satisfy the current policy requirements。

3、解决办法:

    首次设置一个复杂的密码 (mysql 默认是中级 MEDIUM)     Root_12root

    

   1\   use mysql

   2\  update user set authentication_string = password("Root_12root") where user = 'root'

  4\ 重启

  5、用新密码登录,

  6  、

      alter user 'root'@'localhost' identified by 'Root_12root' 

    

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转载自www.cnblogs.com/cbugs/p/10975264.html