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LEARNING OPENSTACK NETWORKING (NEUTRON)

By : James Denton

4.2 (17)

LEARNING OPENSTACK NETWORKING (NEUTRON)

4.2 (17)

By: James Denton

Overview of this book

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.

Preface

Preface

What this book covers

What you need for this book

Who this book is for

Conventions

Reader feedback

Customer support

Free Chapter

1. Preparing the Network for OpenStack

1. Preparing the Network for OpenStack

What is OpenStack Networking?

Preparing the physical infrastructure

Physical server connections

Summary

2. Installing OpenStack

2. Installing OpenStack

System requirements

Before you begin

Installation of OpenStack

Summary

3. Installing Neutron

3. Installing Neutron

Basic Neutron constructs

Installing and configuring Neutron services

Configuring Neutron services

Summary

4. Building a Virtual Switching Infrastructure

4. Building a Virtual Switching Infrastructure

Providing layer 2 connectivity to instances

Types of networks in Neutron

Choosing a networking plugin

Configuring a layer 2 networking plugin

Summary

5. Creating Networks with Neutron

5. Creating Networks with Neutron

Network management

Attaching instances to networks

Exploring how instances get their addresses

Exploring how instances retrieve their metadata

Summary

6. Creating Routers with Neutron

6. Creating Routers with Neutron

Configuring the Neutron L3 agent

Router management in the CLI

Network Address Translation

Floating IP Management

Demonstrating traffic flow from instance to Internet

Router management in the dashboard

Summary

7. Load Balancing Traffic in Neutron

7. Load Balancing Traffic in Neutron

Fundamentals of load balancing

Integrating load balancers into the network

Installing LBaaS

Load balancer management in the CLI

Building a load balancer

Load balancer management in the dashboard

Summary

8. Protecting Instances on the Network

8. Protecting Instances on the Network

Security groups in OpenStack

Firewall-as-a-service

Introducing iptables

Working with security groups

Working with FWaaS

Firewall rules – behind the scenes

Summary

A. Additional Neutron Commands

A. Additional Neutron Commands

Neutron extensions

Virtual private networks

Per-tenant quotas

Cisco Nexus 1000V command reference

VMware/Nicera command reference

B. ML2 Configuration

B. ML2 Configuration

Installing the ML2 plugin

Configuring the ML2 plugin

Index

Index

Types of networks in Neutron

In Neutron, there are two categories used to describe networks that provide connectivity to instances:

Provider networks
Tenant networks

Provider networks are networks, created by the OpenStack administrator, that map directly to a physical network in the data center. Useful network types in this category include flat (untagged) and VLAN (802.1q tagged). Other network types, such as local and GRE, are configurable options but are rarely implemented as provider networks.

Tenant networks are networks created by users to provide connectivity between instances within a tenant. By default, tenant networks are fully isolated from each other, including other networks within the same tenant.

Neutron supports a range of networking types, including:

Local
Flat
VLAN
VXLAN and GRE

A local network is one that is isolated from other networks and nodes. Instances connected to a local network may communicate with other instances in the same network on the same compute node, but are unable...

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