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

Working with highly available routers

With few exceptions, creating and managing an HA router is no different from its standalone counterpart. Neutron's router management commands were covered in the previous chapter, and the exceptions can be found in the following sections.

Creating highly available routers

As an administrator, HA routers can be created using the --ha flag with the Neutron router-create command, as follows:

usage:    router-create [--tenant-id TENANT_ID] [--admin-state-down]
          --ha {True,False}


As a regular user, the type of router that is created, whether it's a standalone, HA, or distributed virtual router, is determined by the l3_ha configuration option in the Neutron configuration file. Users do not have the ability to override the default router type and cannot specify the --ha option.

Deleting highly available routers

To delete an HA router, simply use the following Neutron router-delete command:

usage:    neutron router-delete ROUTER