Book Image

Modern DevOps Practices - Second Edition

By : Gaurav Agarwal
Book Image

Modern DevOps Practices - Second Edition

By: Gaurav Agarwal

Overview of this book

DevOps and the cloud have changed how we look at software development and operations like never before, leading to the rapid growth of various DevOps tools, techniques, and practices. This updated edition helps you pick up the right tools by providing you with everything you need to get started with your DevOps journey. The book begins by introducing you to modern cloud-native architecture, and then teaches you about the architectural concepts needed to implement the modern way of application development. The next set of chapters helps you get familiarized with Git, Docker, Kubernetes, Ansible, Terraform, Packer, and other similar tools to enable you to build a base. As you advance, you’ll explore the core elements of cloud integration—AWS ECS, GKE, and other CaaS services. The chapters also discuss GitOps, continuous integration, and continuous delivery—GitHub actions, Jenkins, and Argo CD—to help you understand the essence of modern app delivery. Later, you’ll operate your container app in production using a service mesh and apply AI in DevOps. Throughout the book, you’ll discover best practices for automating and managing your development lifecycle, infrastructure, containers, and more. By the end of this DevOps book, you'll be well-equipped to develop and operate applications using modern tools and techniques.
Table of Contents (24 chapters)
1
Part 1:Modern DevOps Fundamentals
6
Part 2:Container Orchestration and Serverless
10
Part 3:Managing Config and Infrastructure
14
Part 4:Delivering Applications with GitOps
18
Part 5:Operating Applications in Production

Creating the required infrastructure with Terraform

Our goal was to build a scalable LAMP stack, so we will define a VM scale set using the apache-webserver image we created and a single VM with the mysql-dbserver image. A VM scale set is an autoscaling group of VMs that will scale out and scale back horizontally based on traffic, similar to how we did with containers on Kubernetes.

We will create the following resources:

  • A new resource group called lamp-rg
  • A virtual network within the resource group called lampvnet
  • A subnet within lampvnet called lampsub
  • Within the subnet, we create a Network Interface Card (NIC) for the database called db-nic that contains the following:
    • A network security group called db-nsg
    • A VM called db that uses the custom mysql-dbserver image
  • We then create a VM scale set that includes the following:
    • A network profile called webnp
    • A backend address pool
    • A load balancer called web-lb
    • A public IP address attached to web-lb
    • An HTTP probe that...