MySQL8.0修改密码的正确姿势分享(2)-木庄网络博客

另一个终端无密码进入

F:\MySQL\mysql-8.0.13-winx64\bin>mysql -u root -p
Enter password: *******
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)

F:\MySQL\mysql-8.0.13-winx64\bin>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

F:\MySQL\mysql-8.0.13-winx64\bin>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

F:\MySQL\mysql-8.0.13-winx64\bin>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

F:\MySQL\mysql-8.0.13-winx64\bin>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>