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

Summary

In this chapter, we have seen an advanced use of containers with the use of Kubernetes, which is a container manager.

We discussed the different options for installing a small cluster on a local machine using Docker Desktop. Then, using the YAML specification file and the kubectl command, we realized the deployment of a Docker image in our Kubernetes cluster in order to run a web application.

We installed and configured Helm, which is the package manager of Kubernetes. Then, we applied it in practice with an example of a chart deployment in Kubernetes.

We also had an overview of AKS, which is a Kubernetes service, managed by Azure, with its creation and configuration.

Finally, we finished this chapter with an example of implementation on a CI/CD pipeline with Azure Pipelines, which deploys a containerized application in a Kubernetes cluster.

The next chapter begins a...