Home Database Mysql Tutorial MySQL:"怎样重新设置一个忘记的口令",这_MySQL

MySQL:"怎样重新设置一个忘记的口令",这_MySQL

Jun 01, 2016 pm 01:56 PM

如果你忘记了MySQL的root用户的口令,你可以用下列过程恢复它。

kill `cat /mysql-data-directory/hostname.pid`
使用--skip-grant-tables选项重启mysqld。

用mysql -h hostname mysql连接mysqld服务器并且用一条GRANT命令改变口令。也可以用mysqladmin -h hostname -u user password 'new password' 进行。

这是从baidu,google上能搜索到的,其实也是MySQL手册中(8.9 怎样重新设置一个忘记的口令),所提到了,但我这次在windows 下却失败了...


如果你忘记了MySQL的root用户的口令,你可以用下列过程恢复它。

通过发送一个kill(不是kill -9)到mysqld服务器来关闭mysqld服务器。pid 被保存在一个.pid文件中,通常在MySQL数据库目录中:
kill `cat /mysql-data-directory/hostname.pid`
你必须是一个UNIX root用户或运行服务器的相同用户做这个。

使用--skip-grant-tables选项重启mysqld。
用mysql -h hostname mysql连接mysqld服务器并且用一条GRANT命令改变口令。见7.26 GRANT和REVOKE句法。你也可以用mysqladmin -h hostname -u user password 'new password' 进行。
用mysqladmin -h hostname flush-privileges或用SQL命令FLUSH PRIVILEGES来装载权限表

这是从baidu,google上能搜索到的,其实也是MySQL手册中(8.9 怎样重新设置一个忘记的口令),所提到了,但我这次在windows 下却失败了...

因为我只有一个用户:select user,host from user时

| root | localhost |

后来我用update user set password=PASSWORD('');      可是我用错了,我用成了:update user set password='';

突然退出后,再登录就无法登录了,真是没法啊.

按以上的步骤进行到mysqld --skip-grant-tables后无报错,但mysql还是没有启动,所以无法用后面的mysql登录,因为此时3306都没有打开.

无可赖何之下只得重装它(教训!).

 

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
2 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Hello Kitty Island Adventure: How To Get Giant Seeds
1 months ago By 尊渡假赌尊渡假赌尊渡假赌
Two Point Museum: All Exhibits And Where To Find Them
1 months ago By 尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

How do you alter a table in MySQL using the ALTER TABLE statement? How do you alter a table in MySQL using the ALTER TABLE statement? Mar 19, 2025 pm 03:51 PM

The article discusses using MySQL's ALTER TABLE statement to modify tables, including adding/dropping columns, renaming tables/columns, and changing column data types.

How do I configure SSL/TLS encryption for MySQL connections? How do I configure SSL/TLS encryption for MySQL connections? Mar 18, 2025 pm 12:01 PM

Article discusses configuring SSL/TLS encryption for MySQL, including certificate generation and verification. Main issue is using self-signed certificates' security implications.[Character count: 159]

How do you handle large datasets in MySQL? How do you handle large datasets in MySQL? Mar 21, 2025 pm 12:15 PM

Article discusses strategies for handling large datasets in MySQL, including partitioning, sharding, indexing, and query optimization.

What are some popular MySQL GUI tools (e.g., MySQL Workbench, phpMyAdmin)? What are some popular MySQL GUI tools (e.g., MySQL Workbench, phpMyAdmin)? Mar 21, 2025 pm 06:28 PM

Article discusses popular MySQL GUI tools like MySQL Workbench and phpMyAdmin, comparing their features and suitability for beginners and advanced users.[159 characters]

How do you drop a table in MySQL using the DROP TABLE statement? How do you drop a table in MySQL using the DROP TABLE statement? Mar 19, 2025 pm 03:52 PM

The article discusses dropping tables in MySQL using the DROP TABLE statement, emphasizing precautions and risks. It highlights that the action is irreversible without backups, detailing recovery methods and potential production environment hazards.

How do you represent relationships using foreign keys? How do you represent relationships using foreign keys? Mar 19, 2025 pm 03:48 PM

Article discusses using foreign keys to represent relationships in databases, focusing on best practices, data integrity, and common pitfalls to avoid.

How do you create indexes on JSON columns? How do you create indexes on JSON columns? Mar 21, 2025 pm 12:13 PM

The article discusses creating indexes on JSON columns in various databases like PostgreSQL, MySQL, and MongoDB to enhance query performance. It explains the syntax and benefits of indexing specific JSON paths, and lists supported database systems.

How do I secure MySQL against common vulnerabilities (SQL injection, brute-force attacks)? How do I secure MySQL against common vulnerabilities (SQL injection, brute-force attacks)? Mar 18, 2025 pm 12:00 PM

Article discusses securing MySQL against SQL injection and brute-force attacks using prepared statements, input validation, and strong password policies.(159 characters)

See all articles