MidoNet is an Open Source network virtualization system for Openstack clouds
MidoNet is a network platform that can be used to build arbitrary network topologies on top of an existing IP network without having to modify it.
Today most people use MidoNet with OpenStack, but some are using MidoNet with vanilla Linux hosts, others are working with container platforms like Docker, Mesos, etc.
You do not need special hardware for using MidoNet, it is all based on software.
Network virtualization technology is used at cloud service providers and in private clouds to encourage more dynamic and faster network usage and thus allowing faster time to market for the applications of your customers running in containers and/or virtual machines.
MidoNet allows you to directly connect to existing physical networks using either special switch hardware containing an L2 hardware gateway software (VTEP), or an L2 software gateway in MidoNet, which also support VLAN IDs.
The most interesting side effect of using a scalable, distributed system is the economical savings in electricity and air conditioning.
Instead of sending all traffic through large proprietary boxes, the decisions about the traffic of virtual machines are computed on the hypervisor where the VM is located and traffic that should go to the Internet moves through commodity servers acting as L3 gateways and L4 load balancers.
This way a cloud operator can scale out compute nodes and gateways while at the same time being respectful to nature and the environment, avoiding wasted energy and unnecessary cooling of large, often underutilized network appliances.
MidoNet supports virtual L2 switches, virtual L3 routing, distributed, stateful source NAT and distributed stateful L4 TCP load balancing.
The core of the software is a flow simulator agent that gets installed on each hypervisor and on gateway nodes responsible for north-south traffic.
While the agent uses the datapath from Open vSwitch, all other Open vSwitch userland components are replaced and obsoleted by using MidoNet.
The traffic between virtual machines is encapsulated in tunnels (GRE or VXLAN) which means the existing network does not have to be changed to use MidoNet's network virtualization technology.
For a quick installation using a simple downloadable script, refer to this website: http://www.midonet.org/#quickstart
If you want to see how everything works together, this website will show you how to build a simple dev environment on your machine with MidoNet and OpenStack: https://github.com/midonet/midonet/wiki/OpenStack-All-in-One
You can find out more about the MidoNet community at the following websites:
If you are completely new to Neutron and network virtualization, this blog article is a good start: http://blog.midonet.org/introduction-mns-overlay-network-models-part-1-provider-router/
It's a series of articles, they are all recommended for reading to learn more about the architecture of MidoNet.
Our developers are always happy to talk to new faces.
Visit our Slack channel and take part in the mailing list discussions about the future of the solution and new features.
Your input is appreciated and welcome, we are very glad to learn about new innovations and ideas from our community!
MidoNet is licensed under the Apache license. Please see LICENSE for details.
Copyright 2018 Midokura SARL