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

Components


The diagram in the Magnum Conductor section shows the architecture of Magnum, which has two binaries named magnum-api and magnum-conductor that form the Magnum system. Magnum interacts with Heat to do the orchestration. This means Heat is the OpenStack component that talks to various other projects such as Nova, Neutron, and Cinder to set up the infrastructure for COE, and then it installs the COE on top of it. We will now learn about the detailed functions of the services.

Magnum API

Magnum API is a WSGI server that serves the API requests that the user sends to Magnum. The Magnum API has many controllers to handle a request for each of the resources:

  • Baymodel
  • Bay
  • Certificate
  • Cluster
  • Cluster template
  • Magnum services
  • Quota
  • Stats

Baymodel and Bay will be replaced by cluster and cluster templates respectively. Each of the controllers handle a request for specific resources. They validate the request for permissions, validate the OpenStack resources (such as validating if an image passed in...