Book Image

Hands-On Docker for Microservices with Python

By : Jaime Buelta
Book Image

Hands-On Docker for Microservices with Python

By: Jaime Buelta

Overview of this book

Microservices architecture helps create complex systems with multiple, interconnected services that can be maintained by independent teams working in parallel. This book guides you on how to develop these complex systems with the help of containers. You’ll start by learning to design an efficient strategy for migrating a legacy monolithic system to microservices. You’ll build a RESTful microservice with Python and learn how to encapsulate the code for the services into a container using Docker. While developing the services, you’ll understand how to use tools such as GitHub and Travis CI to ensure continuous delivery (CD) and continuous integration (CI). As the systems become complex and grow in size, you’ll be introduced to Kubernetes and explore how to orchestrate a system of containers while managing multiple services. Next, you’ll configure Kubernetes clusters for production-ready environments and secure them for reliable deployments. In the concluding chapters, you’ll learn how to detect and debug critical problems with the help of logs and metrics. Finally, you’ll discover a variety of strategies for working with multiple teams dealing with different microservices for effective collaboration. By the end of this book, you’ll be able to build production-grade microservices as well as orchestrate a complex system of services using containers.
Table of Contents (19 chapters)
Free Chapter
1
Section 1: Introduction to Microservices
3
Section 2: Designing and Operating a Single Service – Creating a Docker Container
7
Section 3:Working with Multiple Services – Operating the System through Kubernetes
13
Section 4: Production-Ready System – Making It Work in Real-Life Environments

Summary

We started this chapter with a review of the most common different kinds of configuration management strategies, and how they tend to be applied as a project grows. We discussed how the DevOps approach makes teams take ownership of their deployments and helps to fill the traditional gap between development and operations.

We saw how the latest approach called GitOps works very well with a Kubernetes cluster, as the configuration is tightly described as a set of files. We went through the advantages of using Git to track the configuration.

We introduced Flux, a tool that gets deployed inside your cluster and pulls changes from a Git repo branch. We presented an example configuration, deployed it in our local Kubernetes cluster, and configured GitHub to be able to work with it. This enabled any push to our Git branch in GitHub to be reflected in the local cluster.

We ended...