Book Image

Learning OpenStack Networking (Neutron)

By : James Denton
Book Image

Learning OpenStack Networking (Neutron)

By: James Denton

Overview of this book

OpenStack Neutron is an OpenStack component that provides networking as a service for other OpenStack services to architect networks and create virtual machines through its API. This API lets you define network connectivity in order to leverage network capabilities to cloud deployments. Through this practical book, you will build a strong foundational knowledge of Neutron, and will architect and build an OpenStack cloud using advanced networking features. We start with an introduction to OpenStack Neutron and its various components, including virtual switching, routing, FWaaS, VPNaaS, and LBaaS. You’ll also get hands-on by installing OpenStack and Neutron and its components, and use agents and plugins to orchestrate network connectivity and build a virtual switching infrastructure. Moving on, you’ll get to grips with the HA routing capabilities utilizing VRRP and distributed virtual routers in Neutron. You’ll also discover load balancing fundamentals, including the difference between nodes, pools, pool members, and virtual IPs. You’ll discover the purpose of security groups and learn how to apply the security concept to your cloud/tenant/instance. Finally, you' ll configure virtual private networks that will allow you to avoid the use of SNAT and floating IPs when connecting to remote networks.
Table of Contents (21 chapters)
Learning OpenStack Networking (Neutron) Second Edition
About the Author
About the Reviewers

Configuring the LinuxBridge driver and agent

The LinuxBridge mechanism driver is included with the ML2 plugin and was installed in Chapter 3, Installing Neutron. The following sections will walk you through the configuration of Neutron and Nova to utilize the LinuxBridge driver and agent.


While the LinuxBridge and Open vSwitch agents and drivers can coexist in the same environment, they should not be installed and configured simultaneously on the same host.

Installing the LinuxBridge agent

To install the LinuxBridge agent, issue the following command on all nodes:

# apt-get install neutron-plugin-linuxbridge-agent

If prompted to overwrite the neutron.conf file, type N at the [default=N] prompt.

Configuring Nova to use LinuxBridge

In order to properly connect instances to the network, Nova Compute must be aware that LinuxBridge is the networking plugin. The linuxnet_interface_driver configuration option in /etc/nova/nova.conf instructs Nova Compute on how to properly connect instances to the...