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

Understanding the Newman concept

So far in this chapter, we have talked about using Postman locally to test the APIs that we develop or consume. But, what is important in unit, acceptance, and integration tests is that they are automated in order that they are able to be executed within a CI/CD pipeline.

Postman, as such, is a graphical tool that does not automate itself, but there is another tool called Newman that automates tests that are written in Postman.

Newman is a free command-line tool that has the great advantage of automating tests that are already written in Postman. It allows us to integrate API test execution into CI/CD scripts or processes.

In addition, it offers the possibility of generating the results of the tests of reports of different formats (HTML, JUnit, and JSON).

Nevertheless, Newman does not allow us to do the following:

  • To create or configure Postman...