Book Image

Learning DevOps - Second Edition

By : Mikael Krief
Book Image

Learning DevOps - Second Edition

By: Mikael Krief

Overview of this book

In the implementation of DevOps processes, the choice of tools is crucial to the sustainability of projects and collaboration between developers and ops. This book presents the different patterns and tools for provisioning and configuring an infrastructure in the cloud, covering mostly open source tools with a large community contribution, such as Terraform, Ansible, and Packer, which are assets for automation. This DevOps book will show you how to containerize your applications with Docker and Kubernetes and walk you through the construction of DevOps pipelines in Jenkins as well as Azure pipelines before covering the tools and importance of testing. You'll find a complete chapter on DevOps practices and tooling for open source projects before getting to grips with security integration in DevOps using Inspec, Hashicorp Vault, and Azure Secure DevOps kit. You'll also learn about the reduction of downtime with blue-green deployment and feature flags techniques before finally covering common DevOps best practices for all your projects. 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 (25 chapters)
1
Section 1: DevOps and Infrastructure as Code
7
Section 2: DevOps CI/CD Pipeline
11
Section 3: Containerized Microservices with Docker and Kubernetes
14
Section 4: Testing Your Application
18
Section 5: Taking DevOps Further/More on DevOps

Running Packer in Azure Pipelines

To start our IaC pipeline, we will automatically create an Azure VM image using Packer. To perform this operation, we will use Azure Pipelines with a pipeline in YAML format. The goal of this pipeline is to execute a Packer command automatically.

Important Note

For more details on how to create a YAML pipeline in Azure DevOps, read Chapter 7, Continuous Integration and Continuous Delivery.

The Packer template that we will use in this section's lab is the code that we learned in Chapter 4, Optimizing Infrastructure Deployment with Packer. This source code is available here: https://github.com/PacktPublishing/Learning-DevOps-Second-Edition/blob/main/CHAP08/packer/.pkr.hcl.

Before we start using Packer, we need first to create an Azure resource group that will store the created VM image by the pipeline. In our lab, we named this Azure resource group rg_images. The following screenshot shows the Azure resource group:

Figure 8.1 – The Azure resource group for the Packer image ...