Book Image

Modern DevOps Practices

By : Gaurav Agarwal
Book Image

Modern DevOps Practices

By: Gaurav Agarwal

Overview of this book

Containers have entirely changed how developers and end-users see applications as a whole. With this book, you'll learn all about containers, their architecture and benefits, and how to implement them within your development lifecycle. You'll discover how you can transition from the traditional world of virtual machines and adopt modern ways of using DevOps to ship a package of software continuously. Starting with a quick refresher on the core concepts of containers, you'll move on to study the architectural concepts to implement modern ways of application development. You'll cover topics around Docker, Kubernetes, Ansible, Terraform, Packer, and other similar tools that will help you to build a base. As you advance, the book covers the core elements of cloud integration (AWS ECS, GKE, and other CaaS services), continuous integration, and continuous delivery (GitHub actions, Jenkins, and Spinnaker) to help you understand the essence of container management and delivery. The later sections of the book will take you through container pipeline security and GitOps (Flux CD and Terraform). By the end of this DevOps book, you'll have learned best practices for automating your development lifecycle and making the most of containers, infrastructure automation, and CaaS, and be ready to develop applications using modern tools and techniques.
Table of Contents (19 chapters)
1
Section 1: Container Fundamentals and Best Practices
7
Section 2: Delivering Containers
15
Section 3: Modern DevOps with GitOps

Optimizing containers with distroless images

Distroless containers are one of the latest trends in the container world. They are promising in that they consider all the aspects of optimizing containers for the Enterprise environment. There are three important things you should consider while optimizing containers – performance, security, and cost.

Performance

You don't spin containers out of thin air. You must download images from your container registry and then run the container out of the image. Each step uses network and disk I/O. The bigger the image, the more resources it consumes, and the less performance you get out of it. Therefore, a smaller Docker image naturally performs better.

Security

Security is one of the most important aspects of the current IT landscape. Companies usually focus a lot on this aspect and invest a lot of money and time in it. Since containers are a relatively new technology, they are generally prone to hacking, so appropriately...