Book Image

Production Ready OpenStack - Recipes for Successful Environments

By : Arthur Berezin
Book Image

Production Ready OpenStack - Recipes for Successful Environments

By: Arthur Berezin

Overview of this book

OpenStack is the most popular open source cloud platform used by organizations building internal private clouds and by public cloud providers. OpenStack is designed in a fully distributed architecture to provide Infrastructure as a Service, allowing us to maintain a massively scalable cloud infrastructure. OpenStack is developed by a vibrant community of open source developers who come from the largest software companies in the world. The book provides a comprehensive and practical guide to the multiple uses cases and configurations that OpenStack supports. This book simplifies the learning process by guiding you through how to install OpenStack in a single controller configuration. The book goes deeper into deploying OpenStack in a highly available configuration. You'll then configure Keystone Identity Services using LDAP, Active Directory, or the MySQL identity provider and configure a caching layer and SSL. After that, you will configure storage back-end providers for Glance and Cinder, which will include Ceph, NFS, Swift, and local storage. Then you will configure the Neutron networking service with provider network VLANs, and tenant network VXLAN and GRE. Also, you will configure Nova's Hypervisor with KVM, and QEMU emulation, and you will configure Nova's scheduler filters and weights. Finally, you will configure Horizon to use Apache HTTPD and SSL, and you will customize the dashboard's appearance.
Table of Contents (16 chapters)
Production Ready OpenStack - Recipes for Successful Environments
About the Author
About the Reviewers

Configuring the L3 agent with Open vSwitch

The Neutron Layer-3 agent is responsible for creating and managing virtual routers on the Neutron Network node and creating floating IP address that can be attached to virtual machine instances. It is responsible for tenant network connectivity to external public networks. Neutron supports using either LinuxBridge or Open vSwitch as an implementation driver for Layer-3 routing services.

In this recipe, we will configure Neutron L3 agent with Open vSwitch to allow external network connectivity from an existing tenant network.

Getting ready

First, make sure that IP forwarding is enabled on the Neutron network node. Edit the /etc/sysctl.conf file to contain the following parameters:


Run the command # sysctl -p to amend the changes.

How to do it…

Proceed with the following steps:

  1. Using the openstack-config command, edit the main neutron configuration file, and under the DEFUALT section, enable the L3 service plugin: