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Containers in OpenStack

Containers in OpenStack

By : Kumar Singh, Kumari
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Containers in OpenStack

Containers in OpenStack

5 (3)
By: Kumar Singh, Kumari

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 (11 chapters)
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Introduction to Nova, the OpenStack compute service


Nova is a compute service for OpenStack which provides a way to provision compute instances, also known as virtual machines. Nova has capabilities to create and manage the following:

  • Virtual machines
  • Bare metal servers
  • System containers

Nova contains multiple services, each performing different functions. They internally communicate via RPC message-passing mechanisms.

Nova consists of the following components:

  • Nova API: The Nova API service processes incoming REST requests to create and manage virtual servers. The API service mainly deals with database reads and writes, and communicates over RPC with other services to generate responses to the REST requests.
  • Placement API: Nova Placement API service was introduced in 14.0.0 Newton release. This service tracks the resource provider inventories and usages of each provider. A resource provider can be a shared storage pool, compute node and so on.
  • Scheduler: The scheduler service decides which compute...
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