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

Technical requirements

This chapter will explain how to use Packer to create a VM image in an Azure infrastructure as an example of cloud infrastructure. So, you will need an Azure subscription, which you can get here for free: https://azure.microsoft.com/en-us/free/.

In the Creating Packer templates using Ansible section, we will learn how to write Packer templates that use Ansible, so you will need to install Ansible on your machine and understand how it works, which is detailed in Chapter 3, Using Ansible for Configuring IaaS Infrastructure.

The last section of this chapter will give an example of using Terraform with a Packer image; for its application, it will be necessary to install Terraform and understand its operation, which is detailed in Chapter 2, Provisioning Cloud Infrastructure with Terraform.

The entire source code of this chapter is available here: https://github...