Magento 2.4 minimum system requirements

1- Set up server environment

PHP, Apache, MySQL, and Elasticsearch.

• RedHat Enterprise Linux (RHEL), CentOS, Ubuntu, Debian, and similar. Magento is not supported on Microsoft Windows and macOS.
• Minimum 2GB of RAM or create a swap file if memory is less than 2GB.
• Composer ¹ is required.
• Magento 2.4.2 and later is compatible with Composer 1.x and 2.x.
• Magento 2.4.1 and earlier is compatible with Composer 1.x only.
• Webservers: ² or ³
• Database: MySQL 8.0 or MariaDB 10.4
• PHP: PHP 7.4.0
• Required PHP extensions: ext-bcmath, ext-ctype, ext-curl, ext-dom, ext-gd, ext-hash, ext-iconv, ext-intl, ext-mbstring, ext-openssl, ext-pdo_mysql, ext-simplexml, ext-soap, ext-xsl, ext-zip, ext-sockets.
• You must use Elasticsearch for Magento 2.4.2
• A valid security certificate is required for HTTPS, Self-signed SSL certificates are not supported, TLS 1.2 or later.
• Required system dependencies: bash, gzip, lsof, mysql, mysqldump, nice, php, sed, tar.
• Mail server: Mail Transfer Agent (MTA) or an SMTP server
• Recommended: Redis, Varnish version 6.4, RabbitMQ 3.8.x, php_xdebug 2.5.x, PHPUnit (as a command-line tool) 9.0.0

2- Get the Magento software

• Magento Open Source or Magento Commerce.
• Composer metapackage ⁴ to manage Magento components and their dependencies or clone the Magento 2 GitHub repository.

Example: Login as a user (NOT as a root user) via SSH and download Magento Open Source repository:

 composer create-project --repository-url=https://repo.magento.com/ magento/project-community-edition <install-directory-name>

3- Install the Magento software using the command line

Before installing Magento 2 you must create a database (db-name), username (db-user) and password (db-password).

Install Magento by running below SSH line (GB / UK Magento installation settings):

php bin/magento setup:install \
--base-url=http://bablisok.co.uk/ \
--db-host=localhost \
--db-name=magento \
--db-user=magento \
--db-password=magento \
--admin-firstname=admin \
--admin-lastname=admin \
[email protected] \
--admin-user=admin \
--admin-password=admin123 \
--language=en_GB \
--currency=GBP \
--timezone=Europe/London \
--use-rewrites=1 \
--search-engine=elasticsearch7 --elasticsearch-host=es-host.example.com \
--elasticsearch-port=9200

If this step fails check previous steps, make sure you are installing in the correct folder, correct mistakes, and try again.

• Alternatively, you can install Magento with a commercial script library such as Softaculous ⁵ that automates the installation of commercial and open-source web applications.
• Plesk also allows you to install Magento automatically via its “Applications” section but only up to version 2.1

Reference:

1. Composer[↩]
2. Apache 2.4[↩]
3. nginx 1.x[↩]
4. Source 1[↩]
5. Softaculous[↩]