Book Image

Podman for DevOps

By : Alessandro Arrichiello, Gianni Salinetti
Book Image

Podman for DevOps

By: Alessandro Arrichiello, Gianni Salinetti

Overview of this book

As containers have become the new de facto standard for packaging applications and their dependencies, understanding how to implement, build, and manage them is now an essential skill for developers, system administrators, and SRE/operations teams. Podman and its companion tools Buildah and Skopeo make a great toolset to boost the development, execution, and management of containerized applications. Starting with the basic concepts of containerization and its underlying technology, this book will help you get your first container up and running with Podman. You'll explore the complete toolkit and go over the development of new containers, their lifecycle management, troubleshooting, and security aspects. Together with Podman, the book illustrates Buildah and Skopeo to complete the tools ecosystem and cover the complete workflow for building, releasing, and managing optimized container images. Podman for DevOps provides a comprehensive view of the full-stack container technology and its relationship with the operating system foundations, along with crucial topics such as networking, monitoring, and integration with systemd, docker-compose, and Kubernetes. By the end of this DevOps book, you'll have developed the skills needed to build and package your applications inside containers as well as to deploy, manage, and integrate them with system services.
Table of Contents (19 chapters)
1
Section 1: From Theory to Practice: Running Containers with Podman
7
Section 2: Building Containers from Scratch with Buildah
12
Section 3: Managing and Integrating Containers Securely

Summary

With that, we have reached the end of this book about Podman and its companion tools.

First, we learned how to generate Systemd unit files and control containerized workloads as Systemd services, which allows us to, for example, automate container execution at system startup.

After that, we learned how to generate Kubernetes YAML resources. Starting with basic concepts and examples, we learned how to generate complex application stacks using both single-pod and multiple pods approaches and illustrated how the latter can provide a great alternative (and Kubernetes compliant) to the Docker Compose methodology.

Finally, we tested our results on Podman and a local Kubernetes cluster that had been created with minikube to show the great portability of this approach.

This book's journey finishes here, but Podman's amazing evolution continues thanks to its growing adoption in many contexts and its vibrant and helpful community.

Before you move on, don&apos...