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
1
Section 1: DevOps and Infrastructure as Code
6
Section 2: DevOps CI/CD Pipeline
9
Section 3: Containerized Applications with Docker and Kubernetes
12
Section 4: Testing Your Application
16
Section 5: Taking DevOps Further

Provisioning Cloud Infrastructure with Terraform

In the previous chapter, we introduced the tools, practices, and benefits of Infrastructure as Code (IaC) and its impact on DevOps culture. Out of all of the IaC tools that have been mentioned, one that is particularly powerful is Terraform, which is part of the HashiCorp tools suite.

In this chapter, we will look at the basics of using Terraform to provision a cloud infrastructure, using Azure as an example. We will start with an overview of its strengths compared to other IaC tools. We will see how to install it in both manual and automatic mode, and then we will create our first Terraform script to provision an Azure infrastructure with the use of best practices and its automation in a CI/CD process. Finally, we will go a little deeper with the implementation of a remote backend for tfstate.

In this chapter, the following topics...