4. Exploring Overlay Networks with Neutron | OpenStack Networking Cookbook

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Table Of Contents

OpenStack Networking Cookbook

By : Sriram Subramanian

5 (4)

Buy this Book

OpenStack Networking Cookbook

5 (4)

By: Sriram Subramanian

Buy this Book

Overview of this book

Networking in OpenStack has evolved from Nova Network to Neutron. This has resulted in a rich suite of networking services available to OpenStack users and administrators. Advanced services such as routers, firewall, and load balancers use building blocks such as network and subnets. Recent improvements support powerful customization using plugins. The evolution of Neutron continues as it integrates with tools like Ceilometer and Heat. This book will explore the built-in capabilities of Neutron to effectively deploy cloud solutions. You will begin with the most fundamental constructs of OpenStack Networking for switching and routing. You will then learn how to provide your tenants with services like firewalls and load-balancers. The step-by-step recipes will help you configure and troubleshoot networking problems in your cloud. This book will also introduce you to advanced topics like Ceilometer, Heat, and other upcoming tools in OpenStack

Preface

What this book covers

What you need for this book

Who this book is for

Sections

Conventions

Reader feedback

Customer support

Free Chapter

1. Getting Started with OpenStack Networking

Introduction

Creating a Subnet and Network using Horizon

Viewing the details of a Network using Horizon

Associating a Network to an instance using Horizon

Creating a Network using OpenStack CLI

Creating a Subnet using OpenStack CLI

Creating a Port without an associated instance using the OpenStack CLI

Associating a Port to an instance using OpenStack CLI

Configuring the networking quota in OpenStack

2. Using Open vSwitch for VLAN-Based Networks

Introduction

Configuring Neutron to use the Open vSwitch mechanism driver

Configuring Neutron to use the VLAN type driver

Configuring the VLAN range to be used for the networks

Viewing the VLAN allotted for a Network

Creating a Network with a specific VLAN

Viewing the virtual interface information on the compute node

Viewing the virtual interface information on the Network node

3. Exploring Other Network Types in Neutron

Introduction

Configuring Neutron to use the Linux bridge mechanism driver

Viewing the virtual interface information for Linux bridge on the compute node

Configuring Neutron to use a Flat network type

Creating a Flat Network using Horizon

Creating a Shared Network using Horizon

Creating an External Network using Horizon

Setting up a simple web application – an introduction

Setting up a simple web application – setting up OpenStack Networks

Setting up a simple web application – creating instances

4. Exploring Overlay Networks with Neutron

Introduction

Configuring Neutron to use a VXLAN type driver

Configuring a VNI Range for VXLAN Networks

Viewing a VNI assigned to a Neutron Network

Creating a Network with a specific VNI

Viewing the virtual interface information on the compute node for VXLAN tunnels

Viewing the virtual interface information on the network node for VXLAN tunnels

Configuring Neutron to use a GRE type driver

Viewing a virtual interface on the compute node for GRE tunnels

5. Managing IP Addresses in Neutron

Introduction

Creating an instance with a specific IP address

Configuring multiple IP addresses for a virtual interface

Creating a redundant DHCP server per OpenStack Network

Starting the DHCP server on a specific network node

Increasing the number of IP addresses in a Network using the Horizon dashboard

6. Using Routing Services in Neutron

Introduction

Configuring Neutron for Routing services

Creating a Router using the Horizon dashboard and Neutron CLI

Enabling instances on different Networks to communicate

Allowing the Virtual Machine instances to access the Internet

Providing access to a Virtual Machine from an external Network or the Internet using Horizon

Creating and deleting a floating IP address using the Neutron CLI

Associating a floating IP address to a virtual machine using the Neutron CLI

7. Using Neutron Security and Firewall Services

Introduction

Creating a security group using Horizon

Configuring the security group rules using Horizon

Creating a security group using CLI

Configuring the security group rules using CLI

Securing the traffic between instances on the same Network

Creating the security group rules to allow web traffic

Configuring Neutron for the Firewall service

Creating the Firewall rules

Creating the Firewall policies

Creating a Firewall

Viewing and verifying the Firewall rules on the Network node

8. Using HAProxy for Load Balancing

Introduction

Installing and configuring the Neutron load balancer service plugin

Creating a load balancer pool using Horizon

Creating a load balancer pool using CLI

Adding a load balancer member using Horizon

Adding a load balancer member using CLI

Adding a load balancer health monitor using Horizon

Adding a load balancer health monitor using CLI

Creating a Virtual IP using Horizon

Creating a Virtual IP using CLI

Making the load balancer accessible to the Internet

Testing the load balancer

Viewing the load balancer on the network node

9. Monitoring OpenStack Networks

Introduction

Monitoring the Virtual Machine bandwidth

Monitoring the L3 bandwidth

Monitoring the load balancer connection statistics

Monitoring the per project and per user bandwidth

Monitoring the host Network bandwidth

10. Writing Your Own Neutron ML2 Mechanism Driver

Introduction

Creating a basic ML2 mechanism driver

Registering your ML2 mechanism driver with the Neutron server

Processing API requests for a Network

Processing API requests for a Subnet

Processing API requests for a Port

11. Troubleshooting Tips for Neutron

Introduction

Troubleshooting a VM that does not get a DHCP IP address

Troubleshooting a VM that does not get an initial configuration

Troubleshooting a VM that does not get external Network access

Troubleshooting a VM not reachable from external Networks

Checking the status of the Neutron service

Checking the MAC address table on a virtual switch

12. Advanced Topics

Introduction

Configuring Neutron for VPN as a service

Testing VPN as a service on Neutron

Using link aggregation on the compute node

Integrating networking in a Heat template

Index

OpenStack Networking Cookbook

By : Sriram Subramanian

OpenStack Networking Cookbook

By: Sriram Subramanian

Overview of this book

Introduction

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