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

Enabling FWaaS

To enable FWaaS, some changes must be made to Neutron configuration files on the network and controller node. In this environment, the controller serves as the network node. There is no dedicated agent needed to implement FWaaS as the existing Neutron L3 agent handles all firewall functionalities.

Configuring the firewall driver

Neutron stores the FWaaS driver configuration in the /etc/neutron/fwaas_driver.ini file. The most common configuration options will be covered in the following sections.

Defining a device driver

To manage a firewall, Neutron must be configured to use a device driver that provides the interface between the Neutron API and the programming of the service or device.

On the controller node, enable FWaaS and define the iptables device driver in the FWaaS driver configuration file, as follows:

enabled = true 
driver =

Configuring Neutron

In addition to configuring the firewall...