144 lines
4.8 KiB
ReStructuredText
144 lines
4.8 KiB
ReStructuredText
======================
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Distributed Dragonflow
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======================
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Dragonflow is a distributed SDN controller for OpenStack® Neutron™
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supporting distributed Switching, Routing, DHCP and more.
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Our project mission is to implement advanced networking services in a
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manner that is efficient, elegant and simple.
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Dragonflow is designed to support large scale deployments with a focus on
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latency and performance, as well as providing advanced innovative
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services that run locally on each compute node, with container technology
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in mind.
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Mission Statement
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-----------------
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* Implement Neutron APIs using SDN principles, while keeping both
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Plug-in and Implementation fully under OpenStack project and
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governance.
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* 100% open source, contributors are welcome to partner and share
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a mutual vision.
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* Lightweight and Simple in terms of code size and complexity, so
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new users / contributors have a simple and fast ramp-up.
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* Aim for performance-intensive environments, where latency is a
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big deal, while being small and intuitive enough to run on
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small ones as well.
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* Completely pluggable design, easy to extend and enhance.
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* We *truly* believe in a distributed control plane.
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Key Design Guidelines
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---------------------
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* Pluggable database, determines scale, lookup performance and latency
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* Policy-level/Topology abstraction synchronization to the Compute Node
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* Local Dragonflow Controller uses Reactive model (where it makes sense)
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* Loadable Network Services Framework
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High Level Architecture
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-----------------------
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.. image:: ../images/dragonflow_distributed_architecture.png
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:alt: Solution Overview
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:width: 600
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:height: 455
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:align: center
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^^^^^^^^
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Overview
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^^^^^^^^
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Dragonflow environment consist of a local controller running at each of the
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compute nodes in the setup.
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These controllers all sync the network topology and policy using a pluggable
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DB solution.
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The controllers then map the policy into OpenFlow flows using the local
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Dragonflow applications that communicate with the local OpenVSwitch.
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The DB is being populated by Dragonflow Neutron plugin that converts neutron
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API to our model.
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The following sections each describe a specific topic/functionality in
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Dragonflow
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Dragonflow Supported Features
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=============================
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1) L2 core API, IPv4 , IPv6
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Supports GRE/VxLAN/Geneve tunneling protocols
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2) Distributed virtual Router L3
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Supports a hybrid of proactive and reactive flow installation
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3) Distributed DHCP
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4) Pluggable Distributed Data Base
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ETCD, RethinkDB, RAMCloud, OVSDB
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Dragonflow Pipeline
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===================
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`Dragonflow Pipeline <https://docs.openstack.org/dragonflow/latest/pipeline.html>`_
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Dragonflow Pluggable DB
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=======================
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`Pluggable DB
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<https://docs.openstack.org/dragonflow/latest/pluggable_db.html>`_
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Distributed DHCP Application
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============================
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`Distributed DHCP Application
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<https://docs.openstack.org/dragonflow/latest/distributed_dhcp.html>`_
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Containers and Dragonflow
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=========================
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`Dragonflow and Containers <https://docs.openstack.org/dragonflow/latest/containers.html>`_
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Dragonflow Roadmap
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==================
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The following topics are areas we are examining for future features and
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roadmap into Dragonflow project
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- Containers
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- Distributed SNAT/DNAT
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- Reactive DB
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- Topology Service Injection / Service Chaining
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- Smart NICs
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- Hierarchical Port Binding (SDN ToR)
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- Inter Cloud Connectivity (Boarder Gateway / L2GW)
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- Fault Detection
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How to Install
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--------------
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- `Installation Guide <https://docs.openstack.org/dragonflow/latest/readme.html>`_
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- `DevStack Single Node Configuration
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<https://github.com/openstack/dragonflow/tree/master/doc/source/single-node-conf>`_
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- `DevStack Multi Node Configuration
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<https://github.com/openstack/dragonflow/tree/master/doc/source/multi-node-conf>`_
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Dragonflow Talks
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----------------
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- `Dragonflow - Neutron done the SDN Way - OpenStack Austin Summit
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<https://www.openstack.org/videos/video/dragonflow-neutron-done-the-sdn-way>`_
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- `Dragonflow Introduction Video - OpenStack Tokyo Summit
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<https://www.youtube.com/watch?v=wo1Q-BL3nII>`_
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More Useful Reading
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-------------------
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- `Distributed DHCP Service in Dragonflow
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<http://blog.gampel.net/2015/09/dragonflow-distributed-dhcp-for.html>`_
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- `Centralized vs. Distributed SDN Controller in Dragonflow
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<http://blog.gampel.net/2015/08/centralized-vs-distributed-sdn-control.html>`_
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- `Dragonflow in OpenStack Liberty
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<http://galsagie.github.io/2015/10/14/dragonflow-liberty/>`_
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- `Dragonflow Distributed Database
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<http://galsagie.github.io/2015/08/03/df-distributed-db/>`_
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- `Topology Service Injection
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<http://galsagie.github.io/2015/11/10/topology-service-injection/>`_
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- `Dragonflow Security Groups Design at Scale
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<http://galsagie.github.io/2015/12/28/dragonflow-security-groups/>`_
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- `Neutron DB Consistency
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<http://galsagie.github.io/2016/02/14/neutron-db-consistency/>`_
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