Book Image

Learning OpenStack Networking (Neutron)

By : James Denton
Book Image

Learning OpenStack Networking (Neutron)

By: James Denton

Overview of this book

OpenStack Neutron is an OpenStack component that provides networking as a service for other OpenStack services to architect networks and create virtual machines through its API. This API lets you define network connectivity in order to leverage network capabilities to cloud deployments. Through this practical book, you will build a strong foundational knowledge of Neutron, and will architect and build an OpenStack cloud using advanced networking features. We start with an introduction to OpenStack Neutron and its various components, including virtual switching, routing, FWaaS, VPNaaS, and LBaaS. You’ll also get hands-on by installing OpenStack and Neutron and its components, and use agents and plugins to orchestrate network connectivity and build a virtual switching infrastructure. Moving on, you’ll get to grips with the HA routing capabilities utilizing VRRP and distributed virtual routers in Neutron. You’ll also discover load balancing fundamentals, including the difference between nodes, pools, pool members, and virtual IPs. You’ll discover the purpose of security groups and learn how to apply the security concept to your cloud/tenant/instance. Finally, you' ll configure virtual private networks that will allow you to avoid the use of SNAT and floating IPs when connecting to remote networks.
Table of Contents (21 chapters)
Learning OpenStack Networking (Neutron) Second Edition
About the Author
About the Reviewers

Network management

OpenStack can be managed in a variety of ways, including through the GUI, API, and CLI. Neutron provides users with the ability to execute commands from a shell that interfaces with the Neutron API. To enter the Neutron shell, type neutron in a shell on the controller node:

Figure 5.1

Alternatively, Neutron commands can be executed straight from the Linux command line using the Neutron client. The client provides a number of commands that assist with the creation, modification, and deletion of networks, subnets, and ports.

The primary commands associated with network management are:

  • net-create

  • net-delete

  • net-list

  • net-external-list

  • net-update

  • subnet-create

  • subnet-delete

  • subnet-list

  • subnet-show

  • subnet-update

  • port-create

  • port-delete

  • port-list

  • port-show

  • port-update

Whether you choose a LinuxBridge- or Open vSwitch-based virtual networking infrastructure, the process to create, modify, and delete networks and subnets is the same. Behind the scenes, however, the process of connecting instances...