Todd Willey
181 lines
3.5 KiB
ReStructuredText
181 lines
3.5 KiB
ReStructuredText
..
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Copyright 2010 United States Government as represented by the
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Administrator of the National Aeronautics and Space Administration.
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All Rights Reserved.
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Licensed under the Apache License, Version 2.0 (the "License"); you may
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not use this file except in compliance with the License. You may obtain
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a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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License for the specific language governing permissions and limitations
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under the License.
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Concepts and Introduction
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=========================
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Introduction
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------------
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Nova is the software that controls your Infrastructure as as Service (IaaS)
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cloud computing platform. It is similar in scope to Amazon EC2 and Rackspace
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CloudServers. Nova does not include any virtualization software, rather it
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defines drivers that interact with underlying virtualization mechanisms that
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run on your host operating system, and exposes functionality over a web API.
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This document does not attempt to explain fundamental concepts of cloud
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computing, IaaS, virtualization, or other related technologies. Instead, it
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focues on describing how Nova's implementation of those concepts is achieved.
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This page outlines concepts that you will need to understand as a user or
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administrator of an OpenStack installation. Each section links to more more
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detailed information in the `Administration Guide`_, but you'll probably want
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to read this section straight-through before tackling the specifics presented
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in the administration guide.
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.. _`Administration Guide`: administration.guide.html
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Concept: Users and Projects
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---------------------------
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* access to images is limited by project
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* access/secret are per user
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* keypairs are per user
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* quotas are per project
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Concept: Virtualization
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-----------------------
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* KVM
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* UML
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* XEN
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* HyperV
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* qemu
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Concept: Storage
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----------------
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* Ephemeral
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* Volumes
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* Swift
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Concept: Quotas
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---------------
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* Defaults
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* Override for project
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Concept: RBAC
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-------------
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* Intersecting Roles
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* cloudadmin vs. user admin flag
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Concept: API
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------------
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* EC2
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* OpenStack / Rackspace
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Concept: Networking
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-------------------
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::
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* VLAN
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* Cloudpipe
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* Certificates (See also: CA)
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* Flat Networking
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* Flat with DHCP
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* How to generate addresses
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* Floating Addresses
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Concept: Services
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-----------------
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* nova-api
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* nova-scheduler
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* nova-compute
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* nova-volume
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* nova-network
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* nova-instancemonitor
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Concept: nova-manage
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--------------------
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nova manage
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Concept: Flags
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--------------
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python-gflags
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Concept: Plugins
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----------------
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* Managers/Drivers: utils.import_object from string flag
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* virt/connections: conditional loading from string flag
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* db: LazyPluggable via string flag
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* auth_manager: utils.import_class based on string flag
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* Volumes: moving to pluggable driver instead of manager
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* Network: pluggable managers
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* Compute: same driver used, but pluggable at connection
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Concept: IPC/RPC
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----------------
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Rabbit!
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Concept: Fakes
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--------------
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* auth
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* ldap
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Concept: Scheduler
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------------------
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* simple
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* random
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Concept: Security Groups
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------------------------
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Security groups
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Concept: Certificate Authority
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------------------------------
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Per-project CA
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* Images
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* VPNs
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Concept: Images
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---------------
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* launching
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* bundling
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