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

Initial steps


Before we can install OpenStack, some work must be done to prepare the system for a successful installation.

Permissions

RPM Distribution of OpenStack, or RDO, should be installed as a user with sudo permissions. For tips on configuring sudoers, visit the following URL:

https://wiki.centos.org/TipsAndTricks/BecomingRoot

Install network utilities

Various utilities are used throughout this book to assist you in the installation and troubleshooting of OpenStack. The following command installs the necessary packages for those:

$ sudo yum install wget curl tcpdump

Set the hostname

Before installing OpenStack, use the hostnamectl command to set the hostname of the host:

$ sudo hostnamectl set-hostname allinone.learningneutron.com

Install Network Time Protocol (NTP)

A time-synchronization program such as NTP is a requirement in multinode installations, as OpenStack services depend on consistent and synchronized times between hosts. For Nova Compute, having synchronized time helps avoid problems...