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

OpenStack architecture


The following figure (from: https://docs.openstack.org/arch-design/design.html) represents the logical architecture of OpenStack and how users can connect to various services. OpenStack has multiple components for different purposes such as Nova for managing compute resources, Glance for managing OS images, and so on. We will learn about each component in detail in the upcoming sections.

In very simple terms, if a user requests to provision a VM using CLI or the APIs, the request is handled by Nova. Nova then talks to KeyStone to authenticate the request, Glance for the OS image, and Neutron for setting up the network resources. Then, after receiving responses from each component, it boots the VM and returns a response to the user: