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

Automating everything

When you want to implement DevOps practices within a company, it is important to remember the purpose of the DevOps culture: it delivers new releases of an application faster, in shorter cycles.

To do this, the first good practice to apply is to automate all tasks that deploy, test, and secure the application and its infrastructure. Indeed, when a task is done manually, there is a high risk of error in its execution. The fact that these tasks are performed manually increases the deployment cycles of applications.

In addition, once these tasks are automated in scripts, they can be easily integrated and executed in CI/CD pipelines. Another advantage of automation is that developers and the operational team can spend more time and focus their work on the functionality of their business.

It is also important to start the automation of the delivery process at...