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

Concepts


Magnum has several different types of objects that form the Magnum system. In this section, we will learn about each of them in detail and also learn what they are used for in Magnum. Two important objects are the cluster and the cluster template. Here is a list of Magnum objects:

Cluster template

This was previously known as Baymodel. Cluster template is equivalent to a Nova flavor. An object stores template information about the cluster such as a keypair, image, and so on, and this is used to create new clusters consistently. Some parameters are relevant to the infrastructure of the cluster, while others are for the particular COE. Multiple cluster templates can exist for different COEs.

Note

A cluster template cannot be updated or deleted if is used by any cluster.

Cluster

This was previously known as Bay. It is a collection of node objects where work is scheduled. This node can be a VM or bare metal. Magnum deploys a cluster according to the attributes defined in the particular cluster...