Название: Podman in Action: The next generation of container engines (Final Release)
Автор: Daniel Walsh
Издательство: Manning Publications
Год: 2023
Страниц: 314
Язык: английский
Формат: pdf (true)
Размер: 13.9 MB

Discover Podman, a next-generation container engine that manages containers rootlessly and provides extra layers of exceptional security unavailable in Docker and other container platforms.

Podman in Action teaches you how to develop and manage rootless containers using Podman. You’ll quickly get to grips with Podman’s unique advantages over Docker, and learn how easy it is to migrate your Docker-based infrastructure.

Every chapter of Podman in Action includes easy-to-follow examples, including steps to deploy a complete containerized web service. You’ll learn the power and security of the user namespace, how to install and run Podman on MacOS and Windows, and dive into key security concepts like SELinux and SECCOMP.

In part 1 of the book, I introduce you to several ways you can use Podman from the command line. In chapter 2 you learn how to create and work with containers and how containers work with images. You also learn the difference between a container and an image, how to save a container into an image, and then to push the image to a registry, so it can be shared with other users.

In chapter 3 I introduce the concept of a volume. Volumes are the mechanisms most users of your containerized applications use to store their data and keep it isolated from the application. The first two chapters really concentrate on the use of containers and images, which is very similar to the way containers work in Docker.

Chapter 4 adds the concept of pods, similar to Kubernetes Pods, a feature Docker does not support. Pods allow you to share one or more containers within the same resource, namespaces, and security constraints. Pods can allow you to write more complex applications and manage them as a single entity.

Who should read this book?
Podman in Action is written for software developers who are looking to understand, develop, and work with containers, as well as system administrators who need to run containers in production. Reading this book will give you a deeper understanding of what containers are. Having knowledge of Linux processes and familiarity working with the Linux shells is necessary to get the full benefit of the book. The book should have something for everyone on their quest to use containers. Users with a deep understanding of Docker will learn about advanced features of Podman not available from Docker and will get an even deeper understanding of how Docker works. Novice users will learn the basics of containers and pods.