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

In order to understand the Terraform concepts that will be presented in this chapter, you need to have read Chapter 2, Provisioning Cloud Infrastructure with Terraform.

We will look at an example of how to implement blue-green deployment in Azure. If you don't have an Azure subscription, you can create a free Azure account here: https://azure.microsoft.com/en-gb/free/.

Then, we will look at an example of how to use feature flags in an ASP.NET Core application. To use our example, you will need to install the .NET Core SDK, which can be downloaded from https://dotnet.microsoft.com/download.

For code editing, we used the free Visual Studio Code editor, which is available for download here: https://code.visualstudio.com/.

The complete source code for this chapter can be found at https://github.com/PacktPublishing/Learning_DevOps/tree/master/CHAP13.

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