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mysql 8.0忘记root用户密码处理

原创 MySQL 作者:abstractcyj 时间:2019-05-16 15:18:51 0 删除 编辑

忘记了root用户密码, 首先使用如下重启mysqld服务


[root@mysql8-01 ~]# systemctl set-environment MYSQLD_OPTS="--skip-grant-tables"

[root@mysql8-01 ~]# systemctl stop mysqld

[root@mysql8-01 ~]# systemctl start mysqld


如果需要使用简单密码,需要修改系统参数:

set global validate_password.policy=0;

set global validate_password.length=4;


接下来登录:

[root@mysql8-01 ~]# mysql

Welcome to the MySQL monitor.  Commands end with ; or \g.

Your MySQL connection id is 7

Server version: 8.0.14 MySQL Community Server - GPL


Copyright (c) 2000, 2019, 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> 

mysql> ALTER USER 'root'@'*' IDENTIFIED BY '123456';

ERROR 1290 (HY000): The MySQL server is running with the --skip-grant-tables option so it cannot execute this statement

mysql> flush privileges;

Query OK, 0 rows affected (0.02 sec)


mysql> ALTER USER 'root'@'*' IDENTIFIED BY '123456';

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

mysql> set global validate_password.policy=0;

Query OK, 0 rows affected (0.00 sec)


mysql> set global validate_password.length=4;

Query OK, 0 rows affected (0.00 sec)


mysql> flush privileges;

Query OK, 0 rows affected (0.01 sec)


mysql> ALTER USER 'root'@'*' IDENTIFIED BY '123456';

ERROR 1396 (HY000): Operation ALTER USER failed for 'root'@'*'

mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY '123456';

Query OK, 0 rows affected (0.00 sec)


mysql> flush privileges;

Query OK, 0 rows affected (0.00 sec)


mysql> 

mysql> exit



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曾从事java方向开发多年。近年已经转入数据库方向。主要擅长SQL优化,Oracle数据库问题诊断,Oracle备份与恢复等。服务于医药物流,医院等行业

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