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

Testing Azure infrastructure compliance with Chef InSpec

One of the important practices of DevOps culture is IaC, detailed in Chapter 1, The DevOps Culture and Practices, which consists of coding the configuration of an infrastructure and then being automatically deployed via CI/CD pipelines. IaC allows cloud infrastructure to be deployed and provisioned very quickly, but the question that often arises is: Does the automatically-provisioned infrastructure meet functional compliance and security requirements?

To answer this question, we'll have to write and automate infrastructure tests that will verify the following:

  • The infrastructure deployed corresponds well to the application and enterprise architecture specifications.
  • The company's security policies are properly applied to the infrastructure.

These tests can be written in any scripting language that can interact...