Book Image

Learning DevOps

By : Mikael Krief
Book Image

Learning DevOps

By: Mikael Krief

Overview of this book

The implementation of DevOps processes requires the efficient use of various tools, and the choice of these tools is crucial for the sustainability of projects and collaboration between development (Dev) and operations (Ops). This book presents the different patterns and tools that you can use to provision and configure an infrastructure in the cloud. You'll begin by understanding DevOps culture, the application of DevOps in cloud infrastructure, provisioning with Terraform, configuration with Ansible, and image building with Packer. You'll then be taken through source code versioning with Git and the construction of a DevOps CI/CD pipeline using Jenkins, GitLab CI, and Azure Pipelines. This DevOps handbook will also guide you in containerizing and deploying your applications with Docker and Kubernetes. You'll learn how to reduce deployment downtime with blue-green deployment and the feature flags technique, and study DevOps practices for open source projects. Finally, you'll grasp some best practices for reducing the overall application lead time to ensure faster time to market. By the end of this book, you'll have built a solid foundation in DevOps, and developed the skills necessary to enhance a traditional software delivery process using modern software delivery tools and techniques
Table of Contents (23 chapters)
Free Chapter
Section 1: DevOps and Infrastructure as Code
Section 2: DevOps CI/CD Pipeline
Section 3: Containerized Applications with Docker and Kubernetes
Section 4: Testing Your Application
Section 5: Taking DevOps Further


In this chapter dedicated to Terraform, we have seen that its installation can be done either manually or with scripts.

To apply it, we have detailed the different steps of its configuration to provision an Azure infrastructure using an Azure service principal.

We also explained step by step its local execution with its main command lines, which are init, plan, apply, and destroy as well as its life cycle in a CI/CD process. This chapter ends with the protection of the tfstate in an Azure remote backend.

Terraform is, therefore, a tool that is in line with the principles of IaC. The Terraform code is readable and understandable by users, and its execution integrates very well into a CI/CD pipeline that will allow you to provision a cloud infrastructure automatically.

Throughout this book, we will continue to talk about Terraform, with additions about its use with Packer...