From entry to mastery: methods and techniques for building a web server on CentOS

From entry to mastery: Methods and techniques for building web servers on CentOS

Introduction:
Today, web servers have become a core component of the modern Internet. Building a stable, secure, and efficient web server is crucial for website operation and development. This article will introduce how to build a web server on the CentOS operating system, and share some tips and code examples to help readers from getting started to becoming proficient.

1. Install the CentOS operating system:

1. Download the CentOS image file and create a virtual machine.
2. Follow the wizard to install the CentOS operating system in the virtual machine.

2. Install the Apache HTTP server:

1. Open the terminal and use the following command to install the Apache HTTP server:

   sudo yum install httpd

2. After the installation is complete, start the Apache service and set it to start automatically at boot:

   sudo systemctl start httpd
   sudo systemctl enable httpd

3. Enter the IP address of the server in the browser to confirm that Apache has been successfully installed.

3. Configure the virtual host:

1. Create a new virtual host configuration file:

   sudo vi /etc/httpd/conf.d/example.conf

2. In Add the following content to the example .conf file:

   <VirtualHost *:80>
    ServerName example.com
    ServerAlias www.example.com
    DocumentRoot /var/www/html/example
   </VirtualHost>

3. Save and exit the file, then restart the Apache service:

   sudo systemctl restart httpd

4. Enter example.com in the browser Or www.example.com, confirm that the virtual host is configured successfully.

4. Install the MySQL database:

1. Open the terminal and use the following command to install the MySQL database:

   sudo yum install mysql-server

2. After the installation is complete, start the MySQL service and set it to start automatically at boot:

   sudo systemctl start mysqld
   sudo systemctl enable mysqld

3. Run the MySQL security script to set some security options for the database:

   sudo mysql_secure_installation

4. Follow the wizard to set the MySQL root user password and other options.

5. Install the PHP interpreter:

1. Open the terminal and use the following commands to install the PHP interpreter and common modules:

   sudo yum install php php-mysql

2. After the installation is complete, restart the Apache service:

   sudo systemctl restart httpd

6. Test the web server:

1. Create a simple test PHP File:

   sudo vi /var/www/html/test.php

2. Add the following content in the test.php file:

   <?php
    phpinfo();
   ?>

3. Save and exit the file and enter the server IP address in your browser or Add /test.php to the domain name to confirm that the PHP interpreter has been configured successfully.

Conclusion:
Through the introduction and code examples of this article, you should already understand the basic methods and techniques of building a web server on CentOS. Of course, this is just an entry-level tutorial, and you can further learn and explore more advanced features and security measures to meet your specific needs. I hope this article will be helpful to you, and I wish you go further and further on the road to building a web server!

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