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

Deploying containerized OpenStack services


In this section, we will understand how Kolla deploys containerized OpenStack using kolla-ansible. At the time of writing, kolla-kubernetes is under development.

Note

Note that this is not a complete guide to Kolla.

Kolla is evolving now, so the guide is upgraded very frequently. Refer to the latest documentation provided at https://docs.openstack.org/kolla-ansible/latest/. We will try to explain the general deploy process of OpenStack using Kolla and the subprojects.

Deploying OpenStack with Kolla is pretty easy. Kolla provides both all-in-one and multinode installations on Docker or Kubernetes. It basically involves four steps:

  • Setting up a local registry
  • Automatic host bootstrap
  • Building images
  • Deploying images

Setting up a local registry

A local registry is required for storing the container images built by Kolla. It is optional for the all-in-one deployment, the Docker cache can be used instead. Docker Hub contains all the images for all major releases...