新源码下载地址
https://github.com/magento/magento2
或者去官网注册下载完整源码
操作系统 (Linux x86-64)
Linux发行版如红帽企业Linux（RHEL），CentOS，Ubuntu，Debian，Windows等等
内存需求
升级的应用程序和扩展你的Magento从Magento市场和其他来源获得需要多达2GB的RAM。如果您使用少于2GB内存的系统，我们建议您创建一个交换文件；否则，您的升级可能会失败。
Composer (latest stable version)
Composer is required for developers who wish to contribute to the
Magento 2 codebase or anyone who wishes to develop Magento extensions
Web服务器
Apache 2.2 or 2.4
In addition, the apache mod_rewrite module must be enabled. mod_rewrite
enables the server to perform URL rewriting. For more information, see
our Apache documentation.
nginx 1.8 (or latest mainline version)
数据库版本
MySQL 5.6
MariaDB and Percona are compatible with Magento because we support MySQL 5.6 APIs.
PHP版本
支持7.0.2，7.0.6–7.0.x，5.6.x，5.5.22–5.5.x
PHP documentation: CentOS, Ubuntu
Required PHP extensions:
gd, ImageMagick 6.3.7 (or later) or both
PHP 7 only:
PHP OPcache
We strongly recommend you verify the PHP OPcache is enabled for performance reasons. The OPcache is enabled in many PHP distributions. To verify if it is installed, see our PHP documentation for CentOS or Ubuntu.
If you must install it separately, see the PHP OPcache documentation.
PHP settings
We recommend particular PHP configuration settings, such as memory_limit, that can avoid common problems when using Magento.
For more information, see our Required PHP settings.
SSL
A valid security certificate is required for HTTPS.
Self-signed SSL certificates are not supported.
Transport Layer Security (TLS) requirementPayPal and
repo.magento.comboth require TLS 1.1 or later
Mail server
Mail Transfer Agent (MTA) or an SMTP server
Magento can utilize the following technologies:
Redis version 3.0 for page caching and session storage (the latter supported by Magento version 2.0.6 and later only)
Varnish version 3.5 or latest stable 4.x version for page caching
memcached latest stable version for session storage with either
memcacheormemcachedPHP extensions (latest stable version)Magento Enterprise Edition (EE) only
Apache Solr 4.xSolr search can be used as a search provider. Available for Magento Enterprise Edition (EE) only.
RabbitMQ 3.5RabbitMQ can be used to publish messages to queue and to define the consumers that receive the messages asynchronously. Available for Magento EE only.
Three master databasesThese master databases provide scalability advantages for different functional areas of the Magento application: checkout, orders, and product data. Available for Magento EE only.
Optional but recommended:
php_xdebug2.2.0 or later (development environments only; can have an adverse effect on performance)
There is a known issue with xdebug that can affect Magento installations or access to the storefront or Magento Admin after installation.
For details, see Known issue with xdebug.
PHPUnit (as a command-line tool) 4.1 or later
Documentation
原文地址：http://devdocs.magento.com/guides/v2.0/install-gde/system-requirements-tech.html
