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 popularity and become more complex, it's necessary for OpenStack to provide various infrastructure resources for containers such as compute, network, and storage.
Containerization in OpenStack aims at answering the question, how can OpenStack keep pace with the increasing challenges of container technology? You will start with getting familiar with container and OpenStack basics so that you understand how the container ecosystem and OpenStack work together. To help you get better at compute, networking, managing application services and deployment tools, the book has dedicated chapters for different OpenStack projects: Magnum, Zun, Kuryr, Murano, and Kolla.
Toward 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 project for different use cases.
Chapter 1, Working with Containers, starts with discussing the history of virtualization and then talks about the evolution of containers. After this, it focuses on explaining containers, their types, and the different container runtime tools. It then dives into Docker and its installation, and also shows how to use Docker to perform operations on containers.
Chapter 2, Working with Container Orchestration Engines, starts with an introduction to Container Orchestration Engines and then it introduces different COEs available today. It explains the installation of Kubernetes and how to use it to manage containers in an example application.
Chapter 3, OpenStack Architecture, starts with an introduction to OpenStack and its architecture. Then it briefly explains OpenStack's core components and their architecture.
Chapter 4, Containerization in OpenStack, explains the need for containerization in OpenStack, and also talks about different OpenStack container-related projects.
Chapter 5, Magnum – COE Management in OpenStack, explains the Magnum project of OpenStack in detail. It talks about the concepts, components, and architecture of Magnum. Then, it demonstrates Magnum installation with DevStack and it's hands-on.
Chapter 6, Zun – Container Management in OpenStack, explains the Zun project of OpenStack in detail. It talks about the concepts, components, architecture of Zun. Then, it demonstrates Zun installation with DevStack and it's hands-on.
Chapter 7, Kuryr – Container Plugin for OpenStack Networking, explains the Kuryr project of OpenStack in detail. It talks about the concepts, components, and architecture of Kuryr. Then, it demonstrates Kuryr installation with DevStack and it's hands-on.
Chapter 8, Murano – Containerized Application Deployment on OpenStack, explains the Murano project of OpenStack in detail. It talks about the concepts, components, and architecture of Murano. Then, it demonstrates Murano installation with DevStack and it's hands-on.
Chapter 9, Kolla – Containerized Deployment of OpenStack, explains the Kolla project of OpenStack in detail. It talks about the sub-projects, key features and architecture of Kolla. Then, it explains the deployment process for OpenStack ecosystem using the Kolla project.
Chapter 10, Best Practices for Containers and OpenStack, summarizes different container-related OpenStack projects and their advantages. Then, it also explains the security issues with containers and the best practices to resolve them.
This book assumes a basic level of understanding of cloud computing, the Linux operating system and containers. The book will guide you through the installation of any tools that are required.
You can use any tool for the test environment, such as Vagrant, Oracle's VirtualBox, or a VMware workstation.
In this book, the following software list is required:
- Operating system: Ubuntu 16.04
- OpenStack: Pike release or newer
- VirtualBox 4.5 or newer
- Vagrant 1.7 or newer
To run the OpenStack installation in a development environment, the following minimum hardware resources are required:
- A host machine with CPU hardware virtualization support
- 8 core CPU
- 12 GB RAM
- 60 GB free disk space
Internet connectivity is required to download the necessary packages for OpenStack and other tools.
The book is targeted toward cloud engineers, system administrators, or anyone from the production team who works on the OpenStack cloud. This book acts as an end-to-end guide for anyone who wants to start using the concept of containerization in OpenStack.
In this book, you will find a number of styles of text that distinguish between different kinds of information. Here are some examples of these styles, and an explanation of their meaning.
Code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles are shown as follows: "The zun-compute service is the main component of the Zun system."
Any command-line input or output is written as follows:
$ sudo mkdir -p /opt/stackNew terms and important words are shown in bold. Words that you see on the screen, in menus or dialog boxes for example, appear in the text like this: "You can see in the following screenshot that we are given two options to choose for our container host: Kubernetes Pod and Docker Standalone Host."
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