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Introductory Tutorial: A quick guide to setting up a web server on CentOS

王林Original: 2023-08-04 18:04:451121browse

Entry-level tutorial: A quick guide to building a web server on CentOS

Introduction:
In today's Internet era, building your own web server has become a need for many people. This article will introduce you to how to build a web server on the CentOS operating system, and provide code examples to help readers quickly implement it.

Step one: Install and configure Apache

Open the terminal and install the Apache server through the following command:
```
sudo yum install httpd
```
Install After completion, start the Apache service and set it to start automatically at boot:
```
sudo systemctl start httpd
sudo systemctl enable httpd
```
Verify whether Apache is successfully installed:
Enter the IP address or domain name of the server in the browser, if it can be seen The Apache welcome page indicates that the installation is successful.

Step 2: Install and configure MySQL

Use the following command to install the MySQL database:
```
sudo yum install mysql-server
```
Install After completion, start the MySQL service and set it to start automatically at boot:
```
sudo systemctl start mysqld
sudo systemctl enable mysqld
```
Perform basic security settings, enter the following commands and follow the prompts:
```
sudo mysql_secure_installation
```
Use the following command for MySQL account management:
```
sudo mysql
```
After entering the MySQL command line mode, you can create new users, authorizations, etc.

Step Three: Install and Configure PHP

Use the following command to install PHP:
```
sudo yum install php php-mysql
```
After the installation is complete, restart the Apache service:
```
sudo systemctl restart httpd
```
Create a php test file and enter the following content:
```
<?php
phpinfo();
?>
```
Save and exit. Access this file in the browser. If you can see the PHP configuration information, the installation is successful.

Step 4: Configure the virtual host

Edit the Apache configuration file and enter the following command:
```
sudo vi /etc/httpd/conf/httpd.conf
```
Find the two lines DocumentRoot and Directory and modify them to the required directory path, for example:
```
DocumentRoot /var/www/html/example
<Directory "/var/www/html/example">
```
Save and exit, and Restart the Apache service:
```
sudo systemctl restart httpd
```
Create the example folder in the /var/www/html directory and place the website source code file in this folder.

Summary:
Through the above four steps, we successfully built a web server on CentOS. Readers can further configure and adjust according to their own needs, such as adding SSL certificates, setting firewall rules, etc. I hope this article can help beginners who are building web servers, so that everyone can get started quickly and enjoy the fun of web development.

Code example:

<!DOCTYPE html>
<html>
<body>

<?php
echo "Hello World!";
?>

</body>
</html>

The above is a simple PHP sample code that outputs Hello World to the browser. Readers can access this code file by setting a virtual host in the Apache configuration file.

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