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

Magnum introduction


Magnum is an OpenStack service that was created in 2014 by the OpenStack containers team to enable a Container Orchestration Engine (COE) offering the ability to deploy and manage containers as first-class resources in OpenStack.

Currently, Magnum supports Kubernetes, Apache Mesos, and Docker Swarm COEs. Magnum uses Heat to do the orchestration of these COEs on VMs or bare metals provisioned by OpenStack. It uses OS images that contain the required tools to run containers. Magnum offers KeyStone compatible APIs and a complete multi-tenant solution for managing your COEs on top of an OpenStack cluster.

A Magnum cluster is a set of various resources provided by different OpenStack services. It consists of a group of VMs provisioned by Nova, networks connecting these VMs created by Neutron, volumes attached to VMs created by Cinder, and so on. A Magnum cluster can also have some external resources depending on the options provided while creating a cluster. For example, we...