How to change the password of MySQL root user in Linux
Security is very important when using open source software such as Linux and MySQL. When installing and configuring MySQL, setting a strong password is necessary, and changing this password regularly is highly recommended. This article will introduce in detail how to change the password of the MySQL root user in a Linux system environment.
Step 1: Log in to the MySQL server
In the Linux system, we use the client tool officially provided by MySQL to connect to the MySQL server. When installing MySQL, these tools are already installed on the system by default. We can use the following command to log in to the MySQL server:
mysql -u root -p
This command will ask you to enter the password of the MySQL root user. If entered correctly, you will enter the MySQL command line prompt.
Step 2: Stop the MySQL server
Before changing the MySQL root password, we need to stop the MySQL server to ensure data consistency and security. Use the following command to stop the MySQL server:
sudo systemctl stop mysql
Step 3: Modify the my.cnf configuration file
my.cnf is the MySQL configuration file, which stores MySQL configuration information. We need to modify it to change the root password. Enter the following command in the terminal to open the my.cnf file:
sudo vi /etc/mysql/my.cnf
In my.cnf, we need to find the [mysqld] section and add a skip-grant-tables configuration, which will allow us to modify MySQL root password. Add the following configuration at the end of the [mysqld] section:
skip-grant-tables
Save the file and exit the editor.
Step 4: Start the MySQL server
After modifying the my.cnf configuration file, we need to restart the MySQL server. Use the following command to start the MySQL server:
sudo systemctl start mysql
When the MySQL server restarts, we need to log in to the MySQL command line prompt again.
Step 5: Change the root password
Use the following command to enter the MySQL command line prompt:
mysql -u root
After you enter the MySQL command line prompt, use the following command to change it root password:
use mysql; update user set authentication_string=password('新密码') where user='root';
Please note that you need to replace 'new password' with the new password you want to set. After executing the above command, use the following command to make the update effective:
flush privileges;
Exit the MySQL command line prompt and use the following command to restart the MySQL server:
sudo systemctl restart mysql
Now you have successfully changed The password of the MySQL root user.
Summary
In this article, we introduced how to change the password of the MySQL root user in a Linux system environment. It should be noted that only users with administrative rights can change the root password, and before changing the password, the MySQL server must be stopped and the skip-grant-tables configuration must be added to my.cnf. After changing the password, remember to restart the MySQL server for the changes to take effect. Through this article, you can better protect the security of your MySQL database.
The above is the detailed content of How to change the password of MySQL root user in Linux. For more information, please follow other related articles on the PHP Chinese website!

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

This article explores optimizing MySQL memory usage in Docker. It discusses monitoring techniques (Docker stats, Performance Schema, external tools) and configuration strategies. These include Docker memory limits, swapping, and cgroups, alongside

This article addresses MySQL's "unable to open shared library" error. The issue stems from MySQL's inability to locate necessary shared libraries (.so/.dll files). Solutions involve verifying library installation via the system's package m

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

This article compares installing MySQL on Linux directly versus using Podman containers, with/without phpMyAdmin. It details installation steps for each method, emphasizing Podman's advantages in isolation, portability, and reproducibility, but also

This article provides a comprehensive overview of SQLite, a self-contained, serverless relational database. It details SQLite's advantages (simplicity, portability, ease of use) and disadvantages (concurrency limitations, scalability challenges). C

This guide demonstrates installing and managing multiple MySQL versions on macOS using Homebrew. It emphasizes using Homebrew to isolate installations, preventing conflicts. The article details installation, starting/stopping services, and best pra

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]

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