我是靠谱客的博主 腼腆荷花,这篇文章主要介绍MySQL8.0正确修改密码的姿势mysql 5.7.9 之后取消了password 函数,authentication_string=password("123456") 会报错需要先停止运行上述 mysqld 任务,否则报错先停止上述 mysqld 任务现在 mysql root 已经没有了密码,现在分享给大家,希望可以做个参考。

mysql 更新完密码,总是拒绝连接、登录失败?MySQL8.0 不能通过直接修改 mysql.user 表来更改密码。正确更改密码的方式备注: 清空root密码
MySQL8.0 不能通过直接修改 mysql.user 表来更改密码。

因为authentication_string字段下只能是MySQL加密后的43位字符串密码,其他的导致错误。错误不报出,但是无法再登录mysql,总是会提示 无法认证。
参考:MySQL8.0

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mysql> USE mysql; Database changed mysql> UPDATE user SET authentication_string="123456" WHERE user="root"; Query OK, 1 row affected (0.39 sec) Rows matched: 1 Changed: 1 Warnings: 0 mysql> FLUSH privileges; # 刷新保存 Query OK, 0 rows affected (0.13 sec)

mysql 5.7.9 之后取消了password 函数,authentication_string=password("123456") 会报错

C:WINDOWSsystem32>mysql -u root -p
Enter password: ******
ERROR 1045 (28000): Access denied for user ‘root’@‘localhost’ (using password: YES)
1234567891011121314
如果 你已经这样更改密码,并且导致了无法进入mysql。本人表示同情之时,还为了你提供了详细的解决方案。请查看本文备注:清空root 密码
正确更改密码的方式

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ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY "your_password"; mysql> USE mysql; Database changed mysql> ALTER USER 'root'@'localhost' IDENTIFIEED WITH mysql_native_password BY "markjun"; ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'IDENTIFIEED WITH mysql_native_password BY "markjun"' at line 1 mysql> ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY "markjun"; Query OK, 0 rows affected (0.18 sec) mysql> ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY "123456"; Query OK, 0 rows affected (0.08 sec) mysql> SELECT user, authentication_string FROM user; +------------------+------------------------------------------------------------------------+ | user | authentication_string | +------------------+------------------------------------------------------------------------+ | mysql.infoschema | $A$005$THISISACOMBINATIONOFINVALIDSALTANDPASSWORDTHATMUSTNEVERBRBEUSED | | mysql.session | $A$005$THISISACOMBINATIONOFINVALIDSALTANDPASSWORDTHATMUSTNEVERBRBEUSED | | mysql.sys | $A$005$THISISACOMBINATIONOFINVALIDSALTANDPASSWORDTHATMUSTNEVERBRBEUSED | | root | *6BB4837EB74329105EE4568DDA7DC67ED2CA2AD9 | +------------------+------------------------------------------------------------------------+ 4 rows in set (0.00 sec) mysql> FLUSH privileges; Query OK, 0 rows affected (0.38 sec) mysql> quit; Bye F:MySQLmysql-8.0.13-winx64bin>mysql -u root -p Enter password: ******* ... mysql>
  • 备注: 清空root密码

    停止 MySQL 任务 net stop MySQL

    mysqld 命令 mysqld --console --skip-grant-tables --shared-memory

    无密码进入mysql mysql -u root

    清空root 密码 UPDATE user SET authentication_string="" WHERE user=“root”;

另一个终端无密码进入

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F:MySQLmysql-8.0.13-winx64bin>mysql -u root -p Enter password: ******* ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES) F:MySQLmysql-8.0.13-winx64bin>mysql -u root Welcome to the MySQL monitor. Commands end with ; or g. Your MySQL connection id is 7 ... Type 'help;' or 'h' for help. Type 'c' to clear the current input statement. mysql> USE mysql; Database changed mysql> SELECT user, authentication_string FROM user; +------------------+------------------------------------------------------------------------+ | user | authentication_string | +------------------+------------------------------------------------------------------------+ | mysql.infoschema | $A$005$THISISACOMBINATIONOFINVALIDSALTANDPASSWORDTHATMUSTNEVERBRBEUSED | | mysql.session | $A$005$THISISACOMBINATIONOFINVALIDSALTANDPASSWORDTHATMUSTNEVERBRBEUSED | | mysql.sys | $A$005$THISISACOMBINATIONOFINVALIDSALTANDPASSWORDTHATMUSTNEVERBRBEUSED | | root | 123456 | +------------------+------------------------------------------------------------------------+ 4 rows in set (0.34 sec) mysql> UPDATE user SET authentication_string="" WHERE user="root"; Query OK, 1 row affected (0.20 sec) Rows matched: 1 Changed: 1 Warnings: 0 mysql> SELECT user, authentication_string FROM user; +------------------+------------------------------------------------------------------------+ | user | authentication_string | +------------------+------------------------------------------------------------------------+ | mysql.infoschema | $A$005$THISISACOMBINATIONOFINVALIDSALTANDPASSWORDTHATMUSTNEVERBRBEUSED | | mysql.session | $A$005$THISISACOMBINATIONOFINVALIDSALTANDPASSWORDTHATMUSTNEVERBRBEUSED | | mysql.sys | $A$005$THISISACOMBINATIONOFINVALIDSALTANDPASSWORDTHATMUSTNEVERBRBEUSED | | root | | +------------------+------------------------------------------------------------------------+ 4 rows in set (0.00 sec) mysql> FLUSH privileges; Query OK, 0 rows affected (0.10 sec) mysql> quit; Bye

停止 mysqld 任务,Ctrl+C 结束任务,或者直接关闭 运行 mysqld 的 cmd 终端。

需要先停止运行上述 mysqld 任务,否则报错

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F:MySQLmysql-8.0.13-winx64bin>net start mysql MySQL 服务正在启动 . MySQL 服务无法启动。 服务没有报告任何错误。 请键入 NET HELPMSG 3534 以获得更多的帮助。

先停止上述 mysqld 任务

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F:MySQLmysql-8.0.13-winx64bin>net start mysql MySQL 服务正在启动 ... MySQL 服务已经启动成功。

现在 mysql root 已经没有了密码

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F:MySQLmysql-8.0.13-winx64bin>mysql -u root -p Enter password: Welcome to the MySQL monitor. Commands end with ; or g. ... Type 'help;' or 'h' for help. Type 'c' to clear the current input statement. mysql>

最后

以上就是腼腆荷花最近收集整理的关于MySQL8.0正确修改密码的姿势mysql 5.7.9 之后取消了password 函数,authentication_string=password("123456") 会报错需要先停止运行上述 mysqld 任务,否则报错先停止上述 mysqld 任务现在 mysql root 已经没有了密码的全部内容,更多相关MySQL8.0正确修改密码的姿势mysql内容请搜索靠谱客的其他文章。

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