Book Image

Continuous Delivery with Docker and Jenkins, 3rd Edition - Third Edition

By : Rafał Leszko
Book Image

Continuous Delivery with Docker and Jenkins, 3rd Edition - Third Edition

By: Rafał 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.

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Table of Contents (16 chapters)
Preface
Preface
Who this book is for
What this book covers
To get the most out of this book
Download the color images
Code in Action
Download the example code files
Conventions used
Get in touch
Share Your Thoughts
1
Section 1 – Setting Up the Environment
Section 1 – Setting Up the Environment
Free Chapter
2
Chapter 1: Introducing Continuous Delivery
Chapter 1: Introducing Continuous Delivery
Understanding CD
The automated deployment pipeline
Prerequisites to CD
Combining CD and microservices
Building the CD process
Summary
Questions
Further reading
3
Chapter 2: Introducing Docker
Chapter 2: Introducing Docker
Technical requirements
What is Docker?
Installing Docker
Running Docker hello-world
Docker components
Docker applications
Building Docker images
Docker container states
Docker networking
Using Docker volumes
Using names in Docker
Docker cleanup
Docker commands overview
Summary
Exercises
Questions
Further reading
4
Chapter 3: Configuring Jenkins
Chapter 3: Configuring Jenkins
Technical requirements
What is Jenkins?
Installing Jenkins
Jenkins – Hello World
Jenkins architecture
Configuring agents
Custom Jenkins images
Configuration and management
Summary
Exercises
Questions
Further reading
5
Section 2 – Architecting and Testing an Application
Section 2 – Architecting and Testing an Application
6
Chapter 4: Continuous Integration Pipeline
Chapter 4: Continuous Integration Pipeline
Technical requirements
Introducing pipelines
The commit pipeline
Code-quality stages
Triggers and notifications
Team development strategies
Summary
Exercises
Questions
Further reading
7
Chapter 5: Automated Acceptance Testing
Chapter 5: Automated Acceptance Testing
Technical requirements
Introducing acceptance testing
Installing and using the Docker Registry
Acceptance tests in the Jenkins pipeline
Writing acceptance tests
Summary
Exercises
Questions
Further reading
8
Chapter 6: Clustering with Kubernetes
Chapter 6: Clustering with Kubernetes
Technical requirements
Server clustering
Introducing Kubernetes
Kubernetes installation
Using Kubernetes
Advanced Kubernetes
Application dependencies
Alternative cluster management systems
Summary
Exercises
Questions
Further reading
9
Section 3 – Deploying an Application
Section 3 – Deploying an Application
10
Chapter 7: Configuration Management with Ansible
Chapter 7: Configuration Management with Ansible
Technical requirements
Introducing configuration management
Installing Ansible
Using Ansible
Deployment with Ansible
Ansible with Docker and Kubernetes
Introducing IaC
Introduction to Terraform
Summary
Exercises
Questions
Further reading
11
Chapter 8: Continuous Delivery Pipeline
Chapter 8: Continuous Delivery Pipeline
Technical requirements
Environments and infrastructure
Non-functional testing
Application versioning
Completing the continuous delivery pipeline
Summary
Exercises
Questions
Further reading
12
Chapter 9: Advanced Continuous Delivery
Chapter 9: Advanced Continuous Delivery
Technical requirements
Managing database changes
Pipeline patterns
Release patterns
Working with legacy systems
Summary
Exercises
Questions
Further reading
13
Best Practices
Best Practices
Practice 1 – Own the process within the team!
Practice 2 – Automate everything!
Practice 3 – Version everything!
Practice 4 – Use business language for acceptance tests
Practice 5 – Be ready to roll back
Practice 6 – Don't underestimate the impact of people
Practice 7 – Incorporate traceability
Practice 8 – Integrate often
Practice 9 – Only build binaries once
Practice 10 – Release often
14
Assessments
Assessments
Chapter 1: Introducing Continuous Delivery
Chapter 2: Introducing Docker
Chapter 3: Configuring Jenkins
Chapter 4: Continuous Integration Pipeline
Chapter 5: Automated Acceptance Testing
Chapter 6: Clustering with Kubernetes
Chapter 7: Configuration Management with Ansible
Chapter 8: Continuous Delivery Pipeline
Chapter 9: Advanced Continuous Delivery
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Exercises

In this chapter, we covered the fundamentals of Ansible and ways to use it with Docker and Kubernetes. As exercises, try the following tasks:

  1. Create the server infrastructure and use Ansible to manage it:
    1. Connect a physical machine or run a VirtualBox machine to emulate the remote server.
    2. Configure SSH access to the remote machine (SSH keys).
    3. Install Python on the remote machine.
    4. Create an Ansible inventory with the remote machine.
    5. Run the Ansible ad hoc command (with the ping module) to check that the infrastructure is configured correctly.
  2. Create a Python-based hello world web service and deploy it in a remote machine using Ansible playbook:
    1. The service can look exactly the same as we described in the exercises for the chapter.
    2. Create a playbook that deploys the service into the remote machine.
    3. Run the ansible-playbook command and check whether the service was deployed.
  3. Provision a GCP virtual machine instance using Terraform:
    1. Create...
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