Bootstrapping Microservices with Docker, Kubernetes, and Terraform
Ashley Davis
  • MEAP began October 2019
  • Publication in October 2020 (estimated)
  • ISBN 9781617297212
  • 325 pages (estimated)
  • printed in black & white

An excellent introduction to the technologies and concepts involved in microservice implementation.

Chris Kolosiwsky
The best way to learn microservices development is to build something! Bootstrapping Microservices with Docker, Kubernetes, and Terraform guides you from zero though to a complete microservices project, including fast prototyping, development, and deployment. You’ll get your feet wet using industry-standard tools as you learn and practice the practical skills you’ll use for every microservices application. Following a true bootstrapping approach, you’ll begin with a simple, familiar application and build up your knowledge and skills as you create and deploy a real microservices project.

About the Technology

Microservices have become a standard architecture for established enterprises and startups alike. Although microservice designs can be complex, Docker, Kubernetes, and Terraform are the tools that make microservices applications accessible and cost-effective, providing the means to package, manage, and deploy microservices applications of any size. Bootstrapping Microservices with Docker, Kubernetes, and Terraform gradually builds up your skills with these powerful tools, allowing you to increase your knowledge and capability in stages as you build a real application from the ground up.

About the book

In Bootstrapping Microservices with Docker, Kubernetes, and Terraform, 20-year software veteran Ashley Davis lays out his practical approach to microservices. There’s no unnecessary theory—just working examples, and hands-on learning that you can use to build a useful application! Chapter by chapter, you’ll follow the construction of a video streaming application, unlocking how specific technologies are used in the microservices development process. You’ll learn how to create cloud infrastructure with Terraform, how to configure and package microservices using Docker, and how to deploy a microservice application on a Kubernetes cluster. When you’re finished with this engaging project, you’ll have all the skills you need to start building and deploying microservices to your own infrastructure.
Table of Contents detailed table of contents

1 Why microservices?

1.1 This book is practical

1.2 What will I learn?

1.3 What is a microservice?

1.4 What is a microservices application?

1.5 What’s wrong with the monolith?

1.7 Benefits of microservices

1.8 Drawbacks of microservices

1.9 Modern tooling for microservices

1.10 Designing a microservices application

1.11 An example application

1.12 Summary

2 Creating your first microservice

2.1 New tools

2.2 Getting the code

2.3 Why Node.js?

2.4 Our philosophy of development

2.5 Establishing our single-service development environment

2.5.1 Installing Git

2.5.2 Cloning the code repo

2.5.3 Get Visual Studio Code

2.5.4 Installing Node.js

2.6 Building a HTTP server for video streaming

2.6.1 Creating a Node.js project

2.6.2 Installing Express

2.6.3 The Express boilerplate

2.6.4 Running our simple web server

2.6.5 Adding streaming video

2.6.6 Microservice configuration

2.6.7 Set up for production

2.6.8 Live reload for fast iteration

2.6.9 Running the finished code from this chapter

2.7 Node.js review

2.8 Continue your learning…​

2.9 Summary

3 Publishing your first microservice

3.1 New tools

3.2 Getting the code

3.3 What is a container?

3.4 What is an image?

3.5 Why Docker?

3.6 What are we doing with Docker?

3.7 Extending our development environment with Docker

3.7.1 Installing Docker

3.8 Packaging our microservice

3.8.1 Creating a Dockerfile

3.8.2 Packaging a Docker image

3.8.3 Booting our microservice in a container

3.9 Publishing our microservice

3.9.1 Creating a private container registry

3.9.2 Pushing our microservice to the registry

3.9.3 Booting our microservice from the registry

3.10 Docker review

3.11 Continue your learning…​

3.12 Summary

4 Data management for microservices

4.1 New tools

4.2 Getting the code

4.3 Developing microservices with Docker Compose

4.3.1 Why Docker Compose?

4.3.2 Installing Docker Compose

4.3.3 Creating our Docker Compose file

4.3.4 Booting our microservices application

4.3.5 Working with the application

4.3.6 Shutting down the application

4.3.7 Can we use Docker Compose for production?

4.4 Adding file storage to our application

4.4.1 Using Azure Storage

4.4.2 Updating the Video streaming microservice

4.4.3 Adding our new microservice to the Docker Compose file

4.4.4 Testing the updated application

4.4.5 Cloud storage vs cluster storage

4.4.6 What did we achieve?

4.5 Adding a database to our application

4.5.1 Why MongoDB?

4.5.2 Adding a database server in development

4.5.3 Adding a database server in production

4.5.4 Database-per-microservice or database-per-application?

4.5.5 What did we achieve?

4.6 Docker Compose review

4.7 Continue your learning…​

4.8 Summary

5 Communication between microservices

5.1 New and familiar tools

5.2 Getting the code

5.3 Getting our microservices talking

5.4 Introducing the History microservice

5.5 Live reload for fast iterations

5.5.1 Creating a stub for the History microservice

5.5.2 Augmenting the microservice for live reload

5.5.3 Splitting our Dockerfile for development and production

5.5.4 Updating the Docker Compose file for live reload

5.5.5 Trying out live reload

5.5.6 Testing production mode in development

5.5.7 What have we achieved?

5.6 Methods of communication for microservices

5.6.1 Direct messaging

5.6.2 Indirect messaging

5.7 Direct messaging with HTTP

5.7.1 Why HTTP?

5.7.2 Targeting microservices with HTTP messages

5.7.3 Sending a message with HTTP POST

5.7.4 Receiving a message with HTTP POST

5.7.5 Testing the updated application

5.7.6 Sequencing direct messages

5.7.7 What have we achieved?

5.8 Indirect messaging with RabbitMQ

5.8.1 Why RabbitMQ?

5.8.2 Targeting microservices with RabbitMQ messages

5.8.3 Creating a RabbitMQ server

5.8.4 Investigating the RabbitMQ dashboard

5.8.5 Connecting our microservice to the message queue

5.8.6 Single-recipient indirect messaging

5.8.7 Multiple-recipient messages

5.8.8 Sequencing indirect messages

5.8.9 What have we achieved?

5.9 Microservices communication review

5.10 Continue your learning…​

5.11 Summary

6 Creating your production environment

6.1 New tools

6.2 Getting the code

6.3 Getting to production

6.4 Infrastructure as code

6.5 Hosting microservices on Kubernetes

6.5.1 Why Kubernetes?

6.5.2 How does Kubernetes work?

6.6 Working with the Azure CLI

6.6.1 Installing the Azure CLI

6.6.2 Authenticating with Azure

6.6.3 Which version of Kubernetes?

6.6.4 What have we achieved?

6.7 Creating infrastructure with Terraform

6.7.1 Why Terraform?

6.7.2 Installing Terraform

6.7.3 Terraform project setup

6.8 Creating an Azure resource group for your application

6.8.1 Evolutionary architecture with Terraform

6.8.2 Scripting infrastructure creation

6.8.3 Initialise Terraform

6.8.4 By products of Terraform init

6.8.5 Fixing provider version numbers

6.8.6 Build your infrastructure

6.8.7 Understanding Terraform state

6.8.8 Destroy and recreate your infrastructure

6.8.9 What have we achieved?

6.9 Creating your container registry

6.9.1 Continuing the evolution of our infrastructure

6.9.2 Create the container registry

6.9.3 Terraform outputs

6.9.4 What have we achieved?

6.10 Refactor to share configuration data

6.11 Creating our Kubernetes cluster

6.11.1 Continuing the evolution of our infrastructure

6.11.2 Scripting creation of your cluster

6.11.3 Cluster authentication with Azure

6.11.4 Build your cluster

6.11.5 What have we achieved?

6.12 Interacting with Kubernetes

6.12.1 Kubernetes authentication

6.12.2 The Kubernetes CLI

6.12.3 The Kubernetes dashboard

6.12.4 What have we achieved?

6.13 Terraform review

6.14 Continue your learning…​

6.15 Summary

7 Continuous delivery

7.1 New and familiar tools

7.2 Getting the code

7.3 Continuing to evolve our infrastructure

7.4 Continuous delivery

7.5 Deploying containers with Terraform

7.5.1 Configuring the Kubernetes provider

7.5.2 Deploying our database

7.5.3 Preparing for continuous delivery

7.5.4 Testing the new database server

7.5.5 Deploying RabbitMQ

7.5.6 Tightening our security

7.5.7 What have we achieved?

7.6 Deploying our first microservice with Terraform

7.6.1 Using local variables to compute configuration

7.6.2 Build and publish the Docker image

7.6.3 Authentication with the container registry

7.6.4 Deploying the video streaming microservice

7.6.5 Testing your microservice

7.6.6 What have we achieved?

7.7 Continuous delivery with Bitbucket Pipelines

7.7.1 Why Bitbucket Pipelines?

7.7.2 Importing the example code to Bitbucket

7.7.3 Creating a deployment shell script

7.7.4 Managing Terraform state

7.7.5 The Bitbucket Pipelines script

7.7.6 Configuring environment variables

7.7.7 Testing your deployment pipeline

7.7.8 Debugging your deployment pipeline

7.7.9 What have we achieved?

7.8 Where to go for more information?

7.9 Summary

8 Automated testing for microservices

8.1 New tools

8.2 Getting the code

8.3 Testing for microservices

8.4 Automated testing

8.5 Intro to testing with Jest

8.5.1 Why Jest?

8.5.2 Setting up Jest

8.5.3 The math library to test

8.5.4 Your first Jest test

8.5.5 Running your first test

8.5.6 Live reload with Jest

8.5.7 Interpreting test failures

8.5.8 Invoking Jest with npm

8.5.9 Populating your test suite

8.5.10 Mocking with Jest

8.5.11 What have we achieved?

8.6 Unit testing

8.6.1 The metadata microservice

8.6.2 Creating unit tests with Jest

8.6.3 Running the tests

8.6.4 What have we achieved?

8.7 Integration testing microservices

8.7.1 The code to test

8.7.2 Running a Mongodb database

8.7.3 Loading database fixtures

8.7.4 Creating an integration test with Jest

8.7.5 Running the test

8.7.6 What have we achieved?

8.8 End to end testing

8.8.1 Why Cypress?

8.8.2 Installing Cypress

8.8.3 Starting the Cypress user interface

8.8.4 Setup for database fixtures

8.8.5 Booting your application

8.8.6 Creating an end-to-end test with Cypress

8.8.7 Invoking Cypress with npm

8.8.8 What have we achieved?

8.9 Automated testing in the CD pipeline

8.9.1 Running tests in the CD pipeline

8.10 Review of testing

8.11 Where to go for more information?

8.12 Summary

9 Exploring Flixtube

9.1 No new tools!

9.2 Getting the code

9.3 Revisiting essential skills

9.4 Overview of Flixtube

9.4.1 Flixtube microservices

9.4.2 Microservice project structure

9.4.3 Flixtube project structure

9.5 Running Flixtube in development

9.5.1 Booting a microservice

9.5.2 Booting the application

9.6 Testing Flixtube in development

9.6.1 Testing a microservice with Jest

9.6.2 Testing the application with Cypress

9.7 Flixtube deep dive

9.7.1 Database fixtures

9.7.2 Mocking storage

9.7.3 The Gateway

9.7.4 The user interface

9.7.5 Video streaming

9.7.6 Video upload

9.8 Manually deploying Flixtube to production with Terraform

9.8.1 Terraform scripts structure

9.8.2 Prerequisites

9.8.3 Azure authentication

9.8.4 Configuring storage

9.8.5 Deploying the application

9.8.6 Check that it works

9.8.7 Teardown

9.8.8 Terraform modules

9.9 Continuous delivery to production

9.9.1 Prerequisites

9.9.2 Setup your code repository

9.9.3 Preparing the backend

9.9.4 The deployment shell script

9.9.5 FlixTube continuous delivery configuration

9.9.6 Testing the continuous delivery pipeline

9.9.7 Adding automated testing

9.10 Review

9.11 FlixTube in the future

9.12 Continue your learning…​

10 Healthy microservices

10.1 Healthy microservices

10.2 Monitoring your microservices

10.2.1 Logging in development

10.2.2 Error handling

10.2.3 Logging with Docker Compose

10.2.4 Basic logging with Kubernetes

10.2.5 Roll your own log aggregation for Kubernetes

10.2.6 Enterprise logging, monitoring and alerts

10.2.7 Automatic restarts with Kubernetes health checks

10.2.8 Tracing across microservices

10.3 Debugging microservices

10.3.1 The debugging process

10.3.2 Debugging production microservices

10.4 Reliability and recovery

10.4.1 Practice defensive programming

10.4.2 Practice defensive testing

10.4.3 Protect your data

10.4.4 Replication and redundancy

10.4.5 Fault isolation and graceful degradation

10.4.6 Simple techniques for fault tolerance

10.4.7 Advanced techniques for fault tolerance

10.5 Continue your learning…​

10.6 Summary

11 Pathways to scalability

What's inside

  • Creating, configuring and packaging a microservice using Docker
  • Developing and testing a microservices application using Docker-Compose
  • Applying automated testing to microservices
  • Using Terraform to implement infrastructure-as-code and setup a continuous delivery pipeline
  • Building a Kubernetes cluster to host your microservices
  • Monitoring, managing and troubleshooting a microservices application

About the reader

For developers with experience building web applications.

About the author

Ashley Davis is a software developer, entrepreneur, author, and stock trader. Ashley is CTO of Sortal, a startup that helps businesses manage their digital assets with artificial intelligence. Ashley is the creator of Data-Forge and Data-Forge Notebook, software for data transformation, analysis, and visualization in JavaScript. Ashley is the author of Manning’s Data Wrangling with JavaScript.

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