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

Chapter 10: Troubleshooting and Monitoring Containers

Running a container could be mistaken as the ultimate goal for a DevOps team, but instead, this is only the first step of a long journey. System administrators should ensure that their systems are working properly to keep the services up and running; in the same way, the DevOps team should ensure that their containers are working properly.

In container management activities, having the right knowledge of troubleshooting techniques could really help minimize any impact on the final services, reducing downtime. Talking of issues and troubleshooting, a good practice is to keep monitoring containers to easily intercept any issues or errors to speed up recovery.

In this chapter, we're going to cover the following main topics:

  • Troubleshooting running containers
  • Monitoring containers with health checks
  • Inspecting our container build results
  • Advanced troubleshooting with nsenter