Book Image

Containers in OpenStack

Book Image

Containers in OpenStack

Overview of this book

Containers are one of the most talked about technologies of recent times. They have become increasingly popular as they are changing the way we develop, deploy, and run software applications. OpenStack gets tremendous traction as it is used by many organizations across the globe and as containers gain in popularity and become complex, it’s necessary for OpenStack to provide various infrastructure resources for containers, such as compute, network, and storage. Containers in OpenStack answers the question, how can OpenStack keep ahead of the increasing challenges of container technology? You will start by getting familiar with container and OpenStack basics, so that you understand how the container ecosystem and OpenStack work together. To understand networking, managing application services and deployment tools, the book has dedicated chapters for different OpenStack projects: Magnum, Zun, Kuryr, Murano, and Kolla. Towards the end, you will be introduced to some best practices to secure your containers and COE on OpenStack, with an overview of using each OpenStack projects for different use cases.
Table of Contents (17 chapters)
Title Page
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Customer Feedback
Preface

Introduction to Neutron, the OpenStack network service


Neutron is network service for OpenStack which provides a variety of networking options in an OpenStack cloud. Its old name was Quantum and it was later renamed to Neutron. Neutron uses a vast array of plugins to provide different network configurations.

Neutron contains the following components:

  • Neutron server (neutron-server and neutron-*-plugin): The Neutron server handles incoming REST API requests. It communicates to the database using plugins
  • Plugin agent (neutron-*-agent): The plugin agent runs on each compute node to manage the local virtual switch (vswitch) configuration
  • DHCP agent (neutron-dhcp-agent): The DHCP agent provides DHCP services to tenant networks. This agent is responsible for maintaining all DHCP configurations
  • L3 agent (neutron-l3-agent): The L3 agent provides L3/NAT forwarding for the external network access of VMs on tenant networks
  • Network provider services (SDN server/services): This service provides additional...