Install Apache, MySQL 8 or MariaDB 10 and PHP 7 on CentOS 7

Introduction

CentOS 7 is a popular Linux distribution known for its stability and security. If you want to set up a web server on CentOS 7, you may need to install Apache, MySQL or MariaDB and PHP. In this comprehensive guide, we'll walk you through the installation process of these components, along with examples and their output to ensure a successful installation.

prerequisites

Before we begin, please make sure you have the following prerequisites -

CentOS 7 installed on your server or virtual machine.

Root access or sudo permissions to execute commands with administrative privileges.

Update system

First, let's update the system to make sure we have the latest packages and dependencies.

Open the terminal and execute the following command -

sudo yum update -y

Install Apache

Apache is a widely used web server software. To install Apache on CentOS 7, follow these steps -

Enter the following command to install Apache -

sudo yum install httpd -y

After the installation is complete, start the Apache service -

sudo systemctl start httpd

To make Apache start automatically on boot, run the following command -

sudo systemctl enable httpd

Verify that Apache is running by accessing the server's IP address or domain name in a web browser. You should see the Apache default page.

Install MySQL 8 or MariaDB 10

Next, we need to install a relational database management system. You can choose MySQL 8 or MariaDB 10 according to your preference. Here we will cover both installations.

For MySQL 8 -

Execute the following command to install the MySQL repository -

sudo yum install https://dev.mysql.com/get/mysql80-community-release-el7-3.noarch.rpm -y

Install MySQL 8 by running the following command -

sudo yum install mysql-server -y

After the installation is complete, start the MySQL service -

sudo systemctl start mysqld

To protect your MySQL installation, run the security script -

sudo mysql_secure_installation

For MariaDB 10 -

Enter the following commands to install MariaDB -

sudo yum install mariadb-server -y

Start MariaDB service -

sudo systemctl start mariadb

Protect MariaDB installation using secure scripts -

sudo mysql_secure_installation

Install PHP 7

PHP is a server-side scripting language required for dynamic web development. To install PHP 7 on CentOS 7, follow these steps -

Execute the following command to install PHP and its extensions -

sudo yum install php php-mysqlnd -y

After the installation is complete, restart the Apache service to enable PHP -

sudo systemctl restart httpd

To test whether PHP is working properly, create a PHP information file. Create a file named info.php in the default web server directory using the following command -

sudo nano /var/www/html/info.php

In the editor, add the following PHP code -

<?php
   phpinfo();
?>

Save the file and exit the editor. Now, visit http://your_server_IP_address/info.php in your web browser. You should see a PHP Information page showing details about your PHP installation.

Configure PHP and test the installation

In order to further configure PHP, you can modify the PHP configuration file as needed. The configuration file for PHP on CentOS 7 is located in /etc/php.ini. You can open and edit the file using a text editor such as nano or vi.

For example, to increase the maximum file upload size, search for the upload_max_filesize directive in the php.ini file and modify it to your desired value. Save changes and restart Apache for modifications to take effect -

sudo systemctl restart httpd

Now, let's test the PHP installation by creating a simple PHP script. Create a new file called test.php in the default web server directory -

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

Add the following PHP code to the file -

<?php
   echo "PHP is working correctly!";
?>

Save the file and exit the editor. Now, visit http://your_server_IP_address/test.php in your web browser. You should see the message "PHP is working fine!" displayed on the page, confirming that PHP is installed and configured correctly.

Verify MySQL or MariaDB installation

To ensure that MySQL 8 or MariaDB 10 was installed successfully, you can perform a simple check.

For MySQL, execute the following command -

sudo systemctl status mysqld

If MySQL is running normally, you should see an output indicating that the service is active and running.

For MariaDB, run the following command -

sudo systemctl status mariadb

If MariaDB is running normally, you will see the service status as Active.

Connect to MySQL or MariaDB

To connect to MySQL or MariaDB from the command line, you can use the MySQL client utility. Open a terminal and enter the following command -

mysql -u root -p

You will be prompted to enter your MySQL or MariaDB root password. Once authenticated, you will enter the MySQL or MariaDB command line interface.

To verify the connection, you can execute a simple query. For example, let's show all databases -

SHOW DATABASES;

This command will display the list of databases available in the MySQL or MariaDB server.

in conclusion

In this article, we cover the step-by-step installation process of Apache, MySQL 8 or MariaDB 10 and PHP 7 on CentOS 7. We also provide examples and output to help you understand the installation and configuration steps.

The above is the detailed content of Install Apache, MySQL 8 or MariaDB 10 and PHP 7 on CentOS 7. For more information, please follow other related articles on the PHP Chinese website!