OpenStack is an open source platform that leverages compute, network, and storage solutions to create private and public clouds. In the last couple of years, the adoption of OpenStack has increased dramatically and is being embraced by enterprises around the world.
Networking is one of the pillars of OpenStack. A solid understanding of OpenStack Networking will help you implement a rich suite of services in your OpenStack cloud. This book helps you develop the practical knowledge of a wide range of OpenStack Networking concepts.
This book starts with building blocks such as Network, Subnet, and Port. It then proceeds to cover OpenStack Networking technologies, such as Routers, Firewalls, and so on. Advanced topics such as the configuration of load balancers, VPN service to provide site-to-site connectivity, and development of a simple ML2 driver are also covered to help you build and manage the best networks for your OpenStack cloud.
This book will cover you the following topics:
How to build and manage virtual switching, routing, and firewall-based networks in OpenStack using Neutron
How to develop plugins and drivers for Neutron to enhance the built-in networking capabilities
How to monitor and automate OpenStack networks using tools such as Ceilometer and Heat
Chapter 1, Getting Started with OpenStack Networking, introduces you to the building blocks of OpenStack Networking, namely Network, Subnet, and Port.
Chapter 2, Using Open vSwitch for VLAN-based Networks, shows you how to build and manage OpenStack networks using VLANs and Open vSwitch.
Chapter 3, Exploring Other Network Types in Neutrons, takes you through the different types of OpenStack networks with the help of a practical example.
Chapter 4, Exploring Overlay Networks with Neutron, shows you how to build and manage the VXLAN-based and GRE-based networks in OpenStack.
Chapter 5, Managing IP Addresses in Neutron, helps you understand the IP address allocation and DHCP-based address assignment features in OpenStack Neutron.
Chapter 6, Using Routing Services in Neutron, explores how to leverage OpenStack routing capabilities to connect multiple networks.
Chapter 7, Using Neutron Security and Firewall Services, shows you how to implement security groups and Firewall as a service in OpenStack in order to secure your cloud networks.
Chapter 8, Using HAProxy for Load Balancing, takes you through the techniques to implement load balancing as a service in OpenStack using HAProxy.
Chapter 9, Monitoring OpenStack Networks, shows you how to monitor your OpenStack networks using Ceilometer.
Chapter 10, Writing Your Own ML2 Mechanism Driver, gives you a foundation on how to write your own custom ML2 mechanism driver for Neutron.
Chapter 11, Troubleshooting Tips for Neutron, highlights the different OpenStack networking problems that you can run into and their solutions.
Chapter 12, Advanced Topics, covers advanced topics, such as VPN as a Service and Networking using Heat template.
To use this book, you will need computers or servers that have hardware virtualization capabilities.
Kilo is the most recent release of OpenStack and is recommended to try out the recipes in this book.
OpenStack supports different models of deployment and each chapter provides a high level setup that is relevant for the corresponding recipes. You can also use DevStack for most of the recipes, but we recommend creating a distributed OpenStack setup for in-depth learning.
This book is aimed at network and system administrators who want to deploy and manage the OpenStack-based cloud and IT infrastructure. If you have a basic knowledge of OpenStack and virtualization, this book will help you leverage the rich functionality of OpenStack Networking in your cloud deployments.
In this book, you will find several headings that appear frequently (Getting ready, How to do it, How it works, There's more, and See also).
To give clear instructions on how to complete a recipe, we use these sections, as follows:
This section tells you what to expect in the recipe, and describes how to set up any software or any preliminary settings required for the recipe.
This section usually consists of a detailed explanation of what happened in the previous section.
This section consists of additional information about the recipe in order to make the reader more knowledgeable about the recipe.
In this book, you will find a number of text styles that distinguish between different kinds of information. Here are some examples of these styles and an explanation of their meaning.
Code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles are shown as follows: "We can include other contexts through the use of the include directive."
A block of code is set as follows:
[ml2] . . . dhcp_agents_per_network = 2
Any command-line input or output is written as follows:
openstack@controller:~$ cat author_openrc.sh export OS_TENANT_NAME=cookbook export OS_USERNAME=author export OS_PASSWORD=password export OS_AUTH_URL=http://controller:35357/v2.0
New terms and important words are shown in bold. Words that you see on the screen, for example, in menus or dialog boxes, appear in the text like this: "In the left navigation menu, click on Identity and then Projects."
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