mysql on linux installation configuration

MySQL is an open source relational database management system that is widely used in various web applications, mobile applications and desktop applications. Installing and configuring MySQL in a Linux system allows you to easily create, manage and maintain databases. This article will introduce how to install and configure MySQL in a Linux system.

Step One: Install MySQL

There are many ways to install MySQL in a Linux system. The following are the two most commonly used methods:

Method 1: Through the official MySQL Install from the source

In Linux systems, the official MySQL source is usually provided together with the system's own software package management tool. You can install MySQL through the official MySQL source by simply executing the following commands:

sudo apt-get update
sudo apt-get install mysql-server

These commands will use the apt-get package management tool to download and install MySQL.

Method 2: Install through compressed package

If you need to customize MySQL installation in a Linux system or the downloaded source does not contain the official MySQL binary, you can download it from the MySQL official website Manually install the compressed package provided.

Execute the following command to download the MySQL compressed package:

wget https://dev.mysql.com/get/Downloads/MySQL-5.7/mysql-5.7.27.tar.gz

After the download is completed, use the following command to decompress the package:

tar –zxvf mysql-5.7.27.tar.gz

After decompression is completed, enter decompression In the following directory, execute the following command to compile:

cd mysql-5.7.27
cmake .
make
make install

The above command will compile and install MySQL.

Step 2: Configure MySQL

After the installation is completed, you need to perform basic configuration of MySQL to ensure that the database can work properly.

1. Database Security

MySQL is open by default after installation, and anyone can access the database through a network-based method. In order to ensure security, the following measures need to be taken:

Access control: Restrict access to the MySQL port (default 3306) to the local machine.

sudo iptables -A INPUT -p tcp --destination-port 3306 -j DROP
sudo iptables -A INPUT -s localhost -p tcp --destination-port 3306 -j ACCEPT
sudo iptables -A INPUT -s 10.0.0.0/8 -p tcp --destination-port 3306 -j ACCEPT

The above command restricts port 3306 from the external mesh, allowing only local and specified IP access.

2. Set MySQL root password

By default, the MySQL root user has no password. To ensure security, a root password should be set.

mysql> SET PASSWORD FOR 'root'@'localhost' = PASSWORD('MyPass');

The above command will set a new password for the root user to "MyPass".

Step Three: Connect to MySQL

There are many ways to connect to MySQL in a Linux system. The following are the two most commonly used methods:

Method 1: Through the command line Connection

In the terminal of the Linux system, you can connect to MySQL through the following command:

mysql -hlocalhost -uroot -p

After executing the above command, the system will prompt you to enter the password of the MySQL root user.

Method 2: Connect through GUI

In addition to connecting to MySQL from the command line, you can also use some GUI tools to connect to MySQL. Usually these tools provide more friendly and easier-to-use interfaces, such as PhpMyAdmin, MyGUI, HeidiSQL, etc.

In Linux systems, you can install PhpMyAdmin through the following command:

sudo apt-get install phpmyadmin

The above command will install PhpMyAdmin through the apt-get package management tool. Once installed, PhpMyAdmin can be accessed through your system's web browser.

Summary:

MySQL is a very powerful, user-friendly relational database management system. Installing and configuring MySQL in a Linux system can not only help you create, manage and maintain databases, but also strengthen your data security protection measures, making your system more secure and stable.

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