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