Book Image

Hands-On Microservices with Kubernetes

By : Gigi Sayfan
Book Image

Hands-On Microservices with Kubernetes

By: Gigi Sayfan

Overview of this book

Kubernetes is among the most popular open source platforms for automating the deployment, scaling, and operations of application containers across clusters of hosts, providing a container-centric infrastructure. Hands-On Microservices with Kubernetes starts by providing you with in-depth insights into the synergy between Kubernetes and microservices. You will learn how to use Delinkcious, which will serve as a live lab throughout the book to help you understand microservices and Kubernetes concepts in the context of a real-world application. Next, you will get up to speed with setting up a CI/CD pipeline and configuring microservices using Kubernetes ConfigMaps. As you cover later chapters, you will gain hands-on experience in securing microservices and implementing REST, gRPC APIs, and a Delinkcious data store. In addition to this, you’ll explore the Nuclio project, run a serverless task on Kubernetes, and manage and implement data-intensive tests. Toward the concluding chapters, you’ll deploy microservices on Kubernetes and learn to maintain a well-monitored system. Finally, you’ll discover the importance of service meshes and how to incorporate Istio into the Delinkcious cluster. By the end of this book, you’ll have gained the skills you need to implement microservices on Kubernetes with the help of effective tools and best practices.
Table of Contents (16 chapters)

Understanding a CI/CD pipeline

The development life cycle of software systems goes from code, through testing, generating artifacts, even more testing, and eventually, deployment to production. The basic idea is that whenever a developer commits changes to their source control system (for example, GitHub), these changes are detected by the continuous integration (CI) system, which immediately runs the tests.

This is often followed by a review by peers and merging the code changes (or a pull request) from a feature branch or development branch into the master. In the context of Kubernetes, the CI system is also responsible for building the Docker images for the services and pushing them to the image registry. At this point, we have Docker images that contain new code. This is where the CD system comes in.

When a new image becomes available, the continuous delivery (CD) system will...