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OpenStack Networking Essentials
OpenStack Networking Essentials

OpenStack Networking Essentials: Build and manage networks in OpenStack using Neutron

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Profile Icon Chamorro Profile Icon James Denton
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Paperback Apr 2016 174 pages 1st Edition
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Arrow left icon
Profile Icon Chamorro Profile Icon James Denton
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$43.99
Full star icon Full star icon Full star icon Full star icon Full star icon 5 (3 Ratings)
Paperback Apr 2016 174 pages 1st Edition
eBook
$24.99 $35.99
Paperback
$43.99
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Free Trial
Renews at $19.99p/m
eBook
$24.99 $35.99
Paperback
$43.99
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Renews at $19.99p/m

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OpenStack Networking Essentials

Chapter 2. Installing OpenStack Using RDO

In the previous chapter, we looked at the various components that make up Neutron and looked at the networking technologies that Neutron supports. Now, we will install OpenStack in a virtual machine and take a closer look at creating and managing network resources. In this chapter, we'll walk through a deployment of OpenStack called RPM Distribution of OpenStack (RDO) using Packstack. RDO is an OpenStack distribution packaged by the open source community for users running Linux distributions based on Red Hat, such as Fedora, CentOS, and Red Hat Enterprise Linux. RDO is a great alternative to a DevStack deployment, especially for demonstration purposes.

System requirements

OpenStack components are intended to run on standard hardware that ranges from desktop machines to enterprise-grade servers. For optimal performance, the processors of the compute nodes should support virtualization extensions, such as Intel's VT-x or AMD's AMD-v technologies. When using virtualization software such as VirtualBox, it may not be possible to extend certain virtualization features to the virtual machines running inside the OpenStack cloud, which could result in degraded performance. For demonstration purposes, however, deploying in a virtual machine can offer a similar experience to deploying on hardware, but in a simplified manner.

OpenStack currently supports numerous Linux distributions, including CentOS, Fedora, Red Hat Enterprise Linux, openSUSE, SUSE Linux Enterprise Server, and Ubuntu. This book assumes that the CentOS 7.1 Server operating system has been installed prior to the installation of OpenStack using RDO. You can download CentOS...

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:

The initial network configuration

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...

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...

Install RDO using Packstack

Packstack is a utility that installs OpenStack using Puppet, a module-based configuration management tool. Packstack currently supports Fedora, CentOS, Red Hat Enterprise Linux, and other Linux distributions derived from Red Hat.

Download RDO

To download RDO and other related software, issue the following commands on the All-In-One node:

$ sudo yum update
$ sudo yum install http://rdo.fedorapeople.org/rdo-release.rpm

Download and install Packstack with the following command:

$ sudo yum install openstack-packstack

Configure the answer file

Packstack relies on an answer file composed of key-value pairs that describe how various OpenStack and environment settings should be configured. The Packstack command has a parameter that can be passed to generate an initial answer file that can then be modified to suit your needs. You can also pass a file containing a subset of key-value pairs that can then be used during the installation process along with other defaults that Packstack specifies.

In your home directory, create a file named answers.cfg containing the following [general] header and subsequent key-value pairs as follows:

[general]

# Generic config options
CONFIG_UNSUPPORTED=n
CONFIG_DEBUG_MODE=n
CONFIG_PROVISION_DEMO...

System requirements


OpenStack components are intended to run on standard hardware that ranges from desktop machines to enterprise-grade servers. For optimal performance, the processors of the compute nodes should support virtualization extensions, such as Intel's VT-x or AMD's AMD-v technologies. When using virtualization software such as VirtualBox, it may not be possible to extend certain virtualization features to the virtual machines running inside the OpenStack cloud, which could result in degraded performance. For demonstration purposes, however, deploying in a virtual machine can offer a similar experience to deploying on hardware, but in a simplified manner.

OpenStack currently supports numerous Linux distributions, including CentOS, Fedora, Red Hat Enterprise Linux, openSUSE, SUSE Linux Enterprise Server, and Ubuntu. This book assumes that the CentOS 7.1 Server operating system has been installed prior to the installation of OpenStack using RDO. You can download CentOS Server from...

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...

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Key benefits

  • Deploy an all-in-one cloud based on OpenStack Liberty (2015.2) using RDO
  • Learn the fundamentals of the Neutron API including networks, subnets, and ports, and how to manage these resources in the cloud
  • Build simple virtual network infrastructures in the cloud

Description

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.

Who is this book for?

The book is for those who are new to OpenStack and Neutron who want to learn the cloud networking fundamentals and get started with OpenStack networking. Prior networking experience along with a virtual or physical server is recommended to follow along with the concepts demonstrated in the book.

What you will learn

  • Install the latest Liberty (2015.2) release of OpenStack using RDO in VirtualBox
  • Discover the basics of the Neutron API, including networks, subnets, and ports
  • Interact with Neutron using the CLI and Horizon dashboard
  • Create networks and subnets that provide connectivity to instances
  • Implement software routers that connect networks and provide network address translation
  • Secure instances using Neutron s security group functionality
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Publication date, Length, Edition, Language, ISBN-13
Publication date : Apr 19, 2016
Length: 174 pages
Edition : 1st
Language : English
ISBN-13 : 9781785283277
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Product Details

Publication date : Apr 19, 2016
Length: 174 pages
Edition : 1st
Language : English
ISBN-13 : 9781785283277
Vendor :
OpenStack
Tools :

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Table of Contents

10 Chapters
1. OpenStack Networking Components – an Overview Chevron down icon Chevron up icon
2. Installing OpenStack Using RDO Chevron down icon Chevron up icon
3. Neutron API Basics Chevron down icon Chevron up icon
4. Interfacing with Neutron Chevron down icon Chevron up icon
5. Switching Chevron down icon Chevron up icon
6. Routing Chevron down icon Chevron up icon
7. Building Networks and Routers Chevron down icon Chevron up icon
8. Security Group Fundamentals Chevron down icon Chevron up icon
A. Configuring VirtualBox Chevron down icon Chevron up icon
Index Chevron down icon Chevron up icon

Customer reviews

Rating distribution
Full star icon Full star icon Full star icon Full star icon Full star icon 5
(3 Ratings)
5 star 100%
4 star 0%
3 star 0%
2 star 0%
1 star 0%
Jonathan Velez Jun 28, 2016
Full star icon Full star icon Full star icon Full star icon Full star icon 5
This book is a very good high level intro into OpenStack networking but just as the author prefaces, you must have a good handle on networking and system administration before hand. OpenStack has so many moving parts and its quite refreshing to get an understanding of a single piece of the puzzle. The explanations are concise and did not require any troubleshooting on my part to get things to work.I was able to setup my environment with relative ease with minimal linux knowledge and mess around with the interface as it should be. I would still like a troubleshooting section but to be honest everything was relatively easy. This should have been author's first book and continue expanding from here.
Amazon Verified review Amazon
Amazon Customer Jul 29, 2016
Full star icon Full star icon Full star icon Full star icon Full star icon 5
Awesome scripting routines for open stack, something that is not a standard yet.
Amazon Verified review Amazon
lonepalm Jul 09, 2016
Full star icon Full star icon Full star icon Full star icon Full star icon 5
Very well done. I have been working with Openstack for just over a year and this book was a big help for understanding the basics of neutron and SDN. The tutorial for installing packstack went very well and I was able to make good use of all the practice exercises. Having you do a 'tcpdump' to watch network traffic is great for learning, and also provides a valuable troubleshooting method for connectivity issues.Great explanations of ports, security groups, and routers. Also a well written howto for configuration of VirtualBox networking for instance connectivity from the workstation. (hint: if you have vboxnet's already, use new designations and create them from scratch. Only issue I ran into was caused by me with a previous configuration)Another solid release from James Denton!
Amazon Verified review Amazon
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