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

Key features


Zun has many advanced features in addition to the basic management of containers. In this section, we will talk about some of the advanced features present in Zun. There are many other features in progress, such as SRIOV networking, PCIe devices, and so on, which are referred to in the Zun documentation.

Cinder integration

Zun supports the attaching of persistent storage to the containers which exist even after the container exits. This storage can be used to store large amounts of data outside the host, which is more reliable if the host goes down. This support is enabled in Zun via Cinder. Users can mount and unmount Cinder volumes to their containers. The users first need to create the volume in Cinder and then provide the volume while creating the container.

Container composition

Zun supports the creation of multiple containers as a single unit. This unit is known as a capsule in Zun. This concept is very similar to pods in Kubernetes. A capsule contains multiple containers...