Book Image

OpenStack Networking Essentials

By : James Denton, Derek Chamorro
Book Image

OpenStack Networking Essentials

By: James Denton, Derek Chamorro

Overview of this book

The OpenStack Networking API offers users the ability to create and manage both basic and complex network architectures that blend the virtual and physical network infrastructure. This book kicks off by describing various components of Openstack Neutron and installing Ubuntu OpenStack based on Canonical's process. Further on, you will use various methods to interface with Neutron to create and manage network resources. You will also get to grips with the relationship between ports, networks, and subnets through diagrams and explanations, and see how the logical components are implemented via plugins and agents. Moving forward, you will learn how virtual switches are implemented and how to build Neutron routers. You will also configure networks, subnets, and routers to provide connectivity to instances using simple examples. At the end, you will configure and manage security groups, and will observe how these rules translate to iptables rules on the host machines. By the end of the book, you will be able to build basic network architectures using Neutron networks and routers in no time.
Table of Contents (15 chapters)
OpenStack Networking Essentials
Credits
About the Author
www.PacktPub.com
Preface
Index

The initial network configuration


To understand how networking within the all-in-one virtual machine node hosting OpenStack will work, refer to the following diagram:

In the preceding diagram, three virtual interfaces are cabled to the All-In-One Node. The eth0 interface will serve as the management interface for OpenStack services and API access while eth1 will be used for interfacing with virtual machine instances over Neutron networks, including using floating IPs. The eth2 interface will serve as the gateway interface for Internet access from the All-In-One Node and will not be utilized by OpenStack itself. By configuring host-only networks within VirtualBox and associating them with the All-In-One Node, you will be able to interface with the OpenStack API, dashboard, and certain Neutron networks from your workstation.

For instructions on how to configure VirtualBox to support the aforementioned networking configuration, refer to Appendix, Configuring VirtualBox.

Example networks

Throughout...