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LEARNING OPENSTACK NETWORKING (NEUTRON)

Chapter 2. Installing OpenStack

Installing, configuring, and maintaining OpenStack clouds can be an arduous task when performed by hand. Many third-party vendors offer downloadable cloud software based on OpenStack that provide deployment and management strategies using Chef, Puppet, Fuel, Ansible, and other tools.

This chapter will guide you through a package-based installation of the following OpenStack components on the CentOS operating system:

Keystone
Glance
Nova Compute
Horizon

The installation process documented within this chapter is based on the OpenStack Installation Guide for Red Hat Enterprise Linux, CentOS, and Fedora, that is found at http://docs.openstack.org/.

If you'd rather download a third-party cloud distribution based on OpenStack, try one of the following:

Rackspace Private Cloud: http://www.rackspace.com/cloud/private/
RedHat RDO: http://openstack.redhat.com/
Mirantis OpenStack: http://software.mirantis.com/
Piston Cloud: http://www.pistoncloud.com/

Once installed...

System requirements

OpenStack components are intended to run on standard hardware that range from desktop machines to enterprise-grade servers. The processors of the compute nodes need to support virtualization technologies, such as Intel's VT-x or AMD's AMD-v technologies.

This book assumes that OpenStack will be installed on physical hardware that meets the following minimum requirements:

Server

Recommended hardware

Notes

Controller node (runs network, volume, API, scheduler, and image services)

Processor: 64-bit x86

Memory: 8 GB RAM

Disk space: 80 GB

Network: Two 1 Gbps network interface cards (NICs)

While a single NIC can be used, it is not recommended, and therefore not addressed in this build.

Compute node (runs virtual instances)

Processor: 64-bit x86Memory: 16 GB RAMDisk space: 80 GBNetwork: Two 1 Gbps network interface cards (NICs)

While a single NIC can be used, it is not recommended and therefore not addressed in this build.

While machines that fail to meet the minimum...

Description

If you are an OpenStack-based cloud operator with experience in OpenStack Compute and nova-network but are new to Neutron networking, then this book is for you. Some networking experience is recommended, and a physical network infrastructure is required to provide connectivity to instances and other network resources configured in the book.

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Michael Bright Jan 04, 2015

This is an impressive guide to OpenStack “Neutron” Networking, written by James Denton of Rackspace - one of the leading companies in the OpenStack ecosystem. I was lucky to pick up a copy at the recent OpenStack summit in Paris, which RackSpace - James himself actually - were generously distributing.The book is organized into 8 chapters covering an introduction to OpenStack networking and installation followed by more detailed configuration of networks, routing, load balancing and firewalls. It provides a very complete and detailed coverage of Neutron networking in a recent OpenStack release (Havana). Every chapter finishes with a useful summary of what’s just been covered.I was initially surprised by the second chapter detailing an OpenStack installation, which seemed unnecessary and simplistic, but I guess it’s necessary to provide a common base for the rest of the book which is essentially a cookbook. So the book starts by a manual installation of OpenStack Havana on a CentOS base. Chapter 3 pursues with Neutron installation.A cookbook it definitely is, and you will get the most out of this book by working through the many configurations described throughout the book. Nevertheless, the book is still a good read if you only read along. I particularly appreciated Chapter 4 “Building a Virtual Switching Infrastructure”, for it’s clear description of different networking models, bridging and the use of LinuxBridge or OpenvSwitch. There’s also coverage of the OpenFlow flow rules managed by OVS. This chapter then describe how to configure one of these core layer2 plugins.The ML2 plugin framework is also mentioned and covered in an appendix, but not in great detail still being a work in progress. Note that LinuxBridge and OVS are already deprecated in the IceHouse release of OpenStack … that’s how fast OpenStack moves.Once the initial OpenStack and Neutron installation/configuration is covered it’s good to see that instructions cover both command-line and dashboard means of making modifications. Chapters 5 and 6 cover operations such as creation of networks, subnets and routers in great detail.Chapters 7 and 8 terminate the book discussing what today are the main applications of Neutron networking: load balancing and firewalls. Load Balancing as a Service (LBaaS) is covered in detail describing it’s use for creating highly available applications across a group of load-balanced servers as well as limitations in the current Havana (and IceHouse) releases. Firewall as a service (FWaaS) is described as experimental in the IceHouse OpenStack release.Appendices cover Neutron extensions for third-party plugins and the ML2 (“Modular Layer2”) plugin framework which will be the basis for all future network plugins for Neutron networking.OpenStack is a huge and fast moving open source project, and Neutron is arguably one of the more complex areas, so Kudos to James for providing this excellent snapshot of this critically important cloud technology. I can’t wait for the second edition …. in a couple of years.

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jonathan a Nov 20, 2014

Really a complete guide. It is well written with clear and helpful examples throughout. You'll be building clouds in no time! Doin' the Neutron Dance!

Kindle Customer Dec 26, 2014

It was my good fortune to be one of the first who receive this book from Packt Publiching for free in exchange of my promise to write an honest review about its content when I read it. So I am going to follow the promise with great pleasure.One of the great things about this book is that it is not just Neutron configuration howto, this book is a real deep learning guide, that explains how all that stuff works internally. Every of configurable Neutron features are then shown in action by means of system level Linux networking tools, like how routing tables or firewall rules look like before and after applying this configuration. Author’s huge experience is also practically assured.I would like to express some more specific points that excited me in this book: - Despite the fact that examples are mostly provided for RHEL 6, author supplies reader with an information about another possible ways of installation, configuration, etc. - When some internal operation of specific Neutron feature is discussed, you can always find technical details needed to understand the material alongside. - Both command line interface and configuration via Horizon dashboard are shown with a highlight of limitations and features available for either method. Everything is shown in examples: command output, diagrams and screenshots that allow to understand things easily. - Chapter 2 “Installing OpenStack” is much more than just installing. Author provides a good overview about the OpenStack architecture and main components along with installation process description. The manual way of installation (without any dedicated automation tools or ready-to-use images) helps readers to understand OpenStack more deeply. It seems to me that if you are not familiar with OpenStack yet it has enough info here to understand the whole architecture. - Book has also benefits much from Appendix B: “ML2 Configuration” that contains timely information about plugins that will be used in the future releases of OpenStack. - Linux networking namespaces are relatively new kernel feature and thus rare thing in the existing deployments. I can designate only 2 mature projects that rely on this somewhat unique Linux kernel feature heavily - OpenStack IaaS and LXC containers. Reading this book, you have a good chance to study more about network namespaces in action in examples.So in general this is a great learning guide about Neutron, but you need take into account that you should cope with general topics about how networks work in general and be familiar with Linux implementation of networking stack. If you scared by terms like L2 and L3, broadcast domain, 802.1q VLAN tag, trunk, etc. this book definitely goes against you. Just take some time to master networking basics first (something similar to Cisco's CCNA level course would be great) and you can then easily follow and really enjoy this book.It is also doesn't hurt to read about general Software Defined Network (SDN) principles and OpenFlow first, to not to be freaked out with Open vSwitch flow rules demonstration :-) But even if you decide against learning SDNs, you can just skip this small part of the book, because in my opinion it is enough to understand how Linux Bridge plugin works to read next chapters.To conclude my review, I want to place emphasis on importance of Neutron while building an OpenStack-based IaaS Cloud. If you want to get all comprehensive info required to install, configure, make use of and troubleshoot Neutron accumulated in one place - just get and read this book!

Jose Manuel De Arce Nov 01, 2014

All you need to get serious in networking coming from systems.If you are using or thinking to use OpenStack to deploy more than 10 servers, and would like to understand the networking component, Neutron, deeper than the web interface allows, this is the book for you.No need to know cisco or juniper commands, just recipes to turn visio network diagrams, with routers, lans, vlans, load balancers and subnets in to neutron commands. Perfect for automation! I found a good guide on deploy networking in a virtual data center, and the warning notes on some bugs or missing features in the openstack releases are also important to keep one out of the sandpits.The only drawback is that the releases covered are Havana and Icehouse, and the plugins are the openvswitch and linux bridge. No commercial plugins and no ML2. I don't think the reader will miss those; if you do, you have gone trough the level of the book already,But the advantage of this books is to get yourself up and running in a week, and that it does, at the price of being useful for 12 to 18 months, at most, giving the quick pace of OpnStack development. Five starts for the effort and dedication of the author to put together the useful information knowing that it will age quickly.By the way, if you happen to be in the Paris summit, and can get a copy of the book, do it. You will learn a lot and wont regret it.

Charles M Corona Dec 19, 2014

This book is a great guide for working with OpenStack and Neutron. It gives you a much better understanding of how to untangle deploy the messy world of Neutron.

LEARNING OPENSTACK NETWORKING (NEUTRON): Architect and build a network infrastructure for your cloud using OpenStack Neutron networking

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LEARNING OPENSTACK NETWORKING (NEUTRON)

Chapter 2. Installing OpenStack

System requirements

Before you begin

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Configuring the OpenStack repository

Installation of OpenStack

Installing and configuring the MySQL database server

Summary

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