Move django-based uncloud to top-level

archive/uncloud_etcd_based/docs/source/introduction.rst

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+Introduction
+============
+
+ucloud is a modern, IPv6 first virtual machine management system.
+It is an alternative to `OpenNebula <https://opennebula.org/>`_,
+`OpenStack <https://www.openstack.org/>`_ or
+`Cloudstack <https://cloudstack.apache.org/>`_.
+
+ucloud is the first cloud management system that puts IPv6
+first. ucloud also has an integral ordering process that we missed in
+existing solutions.
+
+The ucloud documentation is separated into various sections for the
+different use cases:
+
+* :ref:`The user guide <user-guide>` describes how to use an existing
+  ucloud installation
+* There are :ref:`setup instructions <setup-install>` which describe on how to setup a new
+  ucloud instance
+* :ref:`The admin guide <admin-guide>` describe on how to
+  administrate ucloud
+
+
+Architecture
+------------
+We try to reuse existing components for ucloud. Generally speaking,
+ucloud consist of a variety of daemons who handle specific tasks and
+connect to a shared database.
+
+All interactions with the clients are done through an API.
+
+ucloud consists of the following components:
+
+* API
+* Scheduler
+* Host
+* File Scanner
+* Image Scanner
+* Metadata Server
+* VM Init Scripts (dubbed as ucloud-init)How does ucloud work?
+
+
+Tech Stack
+----------
+The following technologies are utilised:
+
+* Python 3
+* Flask
+* QEMU as hypervisor
+* etcd (key/value store)
+* radvd for Router Advertisement
+
+
+Optional components:
+
+* CEPH for distributed image storage
+* uotp for user authentication
+* netbox for IPAM