Get a novel perspective on Linux containers and understand the world of virtualization. This book takes you down the rabbit hole to discover what lies below the API. You’ll go on a journey of virtualization and see how containers are realized in the Linux world. Linux Containers and Virtualization details the data structures within the Linux kernel which make up Linux containers.

You will start with the fundamentals of virtualization including how different resources such as memory, CPU, network, and storage are virtualized. Then you will move on to hypervisors and virtualization using the Kernel virtual Machine (KVM) and Quick Emulator (QEMU). Next, you will learn about Linux namespace, cgroups, and layered file systems, which are the essential building blocks of Linux containers. The explanation traverses the Linux kernel codebase to show how these are realized in the Linux kernel. In the final chapter, you will code your own container by applying the concepts learnt in the previous chapters.

On completion of the book, you will have the knowledge to start coding a Linux container.

What You Will Learn

• Understand the basics of virtualization
  
• Discover how the Linux kernel supports virtualization
• See how the evolution of the Linux kernel and CPUs led to the creation of containerization technologies
• Develop the ability to create your own container framework

Who This Book Is For

Developers working on virtualized software deployment and containers. Architects designing platforms based on a container runtime as well as DevOps professionals who want to get a microscopic view on how containers and virtualization work would find the book useful.

获得关于Linux容器的新视角，了解虚拟化的世界。本书带你进入兔子洞，发现API下面的东西。你将踏上虚拟化的旅程，看看容器是如何在Linux世界中实现的。Linux容器和虚拟化》详细介绍了Linux内核中构成Linux容器的数据结构。

你将从虚拟化的基本原理开始，包括内存、CPU、网络和存储等不同资源如何被虚拟化。然后，你将转向管理程序和使用内核虚拟机（KVM）和快速仿真器（QEMU）的虚拟化。接下来，你将学习Linux命名空间、c组和分层文件系统，这些都是Linux容器的基本构建模块。该解释穿越了Linux内核代码库，以显示这些是如何在Linux内核中实现的。在最后一章中，你将通过应用前几章学到的概念来编写自己的容器。

完成这本书后，你将拥有开始编码Linux容器的知识。

你将学到什么

理解虚拟化的基本知识

发现Linux内核是如何支持虚拟化的

了解Linux内核和CPU的演变如何导致了容器化技术的产生

培养创建你自己的容器框架的能力

本书适用对象

从事虚拟化软件部署和容器工作的开发人员。设计基于容器运行时的平台的架构师，以及想从微观上了解容器和虚拟化如何工作的DevOps专业人员，都会觉得本书很有用。