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Continuous Delivery with Docker and Jenkins, 3rd Edition

Continuous Delivery with Docker and Jenkins, 3rd Edition

By : Leszko
4.5 (12)
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Continuous Delivery with Docker and Jenkins, 3rd Edition

Continuous Delivery with Docker and Jenkins, 3rd Edition

4.5 (12)
By: Leszko

Overview of this book

This updated third edition of Continuous Delivery with Docker and Jenkins will explain the advantages of combining Jenkins and Docker to improve the continuous integration and delivery process of app development. You’ll start by setting up a Docker server and configuring Jenkins on it. Next, you’ll discover steps for building applications and microservices on Dockerfiles and integrating them with Jenkins using continuous delivery processes such as continuous integration, automated acceptance testing, configuration management, and Infrastructure as Code. Moving ahead, you'll learn how to ensure quick application deployment with Docker containers, along with scaling Jenkins using Kubernetes. Later, you’ll explore how to deploy applications using Docker images and test them with Jenkins. Toward the concluding chapters, the book will focus on missing parts of the CD pipeline, such as the environments and infrastructure, application versioning, and non-functional testing. By the end of this continuous integration and continuous delivery book, you’ll have gained the skills you need to enhance the DevOps workflow by integrating the functionalities of Docker and Jenkins.
Table of Contents (16 chapters)
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1
Section 1 – Setting Up the Environment
5
Section 2 – Architecting and Testing an Application
9
Section 3 – Deploying an Application

Jenkins architecture

Hello World is executed in almost no time at all. However, the pipelines are usually more complex, and time is spent on tasks such as downloading files from the internet, compiling source code, or running tests. One build can take from minutes to hours.

In common scenarios, there are also many concurrent pipelines. Usually, a whole team, or even a whole organization, uses the same Jenkins instance. How can we ensure that the builds will run quickly and smoothly?

Master and agents

Jenkins becomes overloaded sooner than it seems. Even in the case of a small (micro) service, the build can take a few minutes. That means that one team committing frequently can easily kill the Jenkins instance.

For that reason, unless the project is really small, Jenkins should not execute builds at all but delegate them to the agent (slave) instances. To be precise, the Jenkins server we're currently running is...

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