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 DHCP service agent

Neutron can provide DHCP services to the virtual machine instances using the neutron-dhcp-agent service. In this recipe, we will configure the DHCP agent to utilize dnsmasq—a free, lightweight DNS forwarder—and DHCP server that is used to provide DHCP services to networks. The DHCP agent is responsible for spawning and controlling dnsmasq processes for each network that leverages DHCP.

How to do it…

Follow these steps to configure the DHCP service agent:

  1. Using the openstack-config command, edit the dhcp agent configuration file, and under the default section, set OVS as the interface driver:

    [root@neutron-node ~]# openstack-config --set /etc/neutron/dhcp_agent.ini DEFAULT interface_driver neutron.agent.linux.interface.OVSInterfaceDriver
  2. Choose dnsmaq as the dhcp driver:

    [root@neutron-node ~]# openstack-config --set /etc/neutron/dhcp_agent.ini DEFAULT dhcp_driver  neutron.agent.linux.dhcp.Dnsmasq
  3. Enable the use of network namespaces for DHCP services as follows...