Book Image

Learning OpenStack Networking - Third Edition

By : James Denton
Book Image

Learning OpenStack Networking - Third Edition

By: James Denton

Overview of this book

OpenStack Networking is a pluggable, scalable, and API-driven system to manage physical and virtual networking resources in an OpenStack-based cloud. Like other core OpenStack components, OpenStack Networking can be used by administrators and users to increase the value and maximize the use of existing datacenter resources. This third edition of Learning OpenStack Networking walks you through the installation of OpenStack and provides you with a foundation that can be used to build a scalable and production-ready OpenStack cloud. In the initial chapters, you will review the physical network requirements and architectures necessary for an OpenStack environment that provide core cloud functionality. Then, you’ll move through the installation of the new release of OpenStack using packages from the Ubuntu repository. An overview of Neutron networking foundational concepts, including networks, subnets, and ports will segue into advanced topics such as security groups, distributed virtual routers, virtual load balancers, and VLAN tagging within instances. By the end of this book, you will have built a network infrastructure for your cloud using OpenStack Neutron.
Table of Contents (16 chapters)

Installing and configuring additional L3 agents

To configure HA routers, two or more L3 agents are required. The L3 agent was installed on the controller01 node in the previous chapter. On all remaining compute nodes, run the following command to install the L3 agent:

# apt install neutron-l3-agent 

Defining an interface driver

Both the Linux bridge and Open vSwitch mechanism drivers support HA routers, and the Neutron L3 agent must be configured to use the interface driver that corresponds to the chosen mechanism driver.

Update the Neutron L3 configuration file on the compute nodes at /etc/neutron/l3_agent.ini and specify one of the following interface drivers:

On compute01 running the Linux bridge agent:

[DEFAULT]
...
interface_driver...