Book Image

Mastering Spring Cloud

By : Piotr Mińkowski
Book Image

Mastering Spring Cloud

By: Piotr Mińkowski

Overview of this book

Developing, deploying, and operating cloud applications should be as easy as local applications. This should be the governing principle behind any cloud platform, library, or tool. Spring Cloud–an open-source library–makes it easy to develop JVM applications for the cloud. In this book, you will be introduced to Spring Cloud and will master its features from the application developer's point of view. This book begins by introducing you to microservices for Spring and the available feature set in Spring Cloud. You will learn to configure the Spring Cloud server and run the Eureka server to enable service registration and discovery. Then you will learn about techniques related to load balancing and circuit breaking and utilize all features of the Feign client. The book now delves into advanced topics where you will learn to implement distributed tracing solutions for Spring Cloud and build message-driven microservice architectures. Before running an application on Docker container s, you will master testing and securing techniques with Spring Cloud.
Table of Contents (22 chapters)
Title Page
Copyright and Credits
Packt Upsell

Secure discovery

As you can see, the configuration of SSL for a microservice application is not a very hard task. However, it is time to increase the difficulty level. We have already launched a single microservice that serves a RESTful API over HTTPS. Now we want that microservice to integrate with the discovery server. There are two problems that arise from this. The first of these is the need to publish information about the secure microservice's instance in Eureka. The second of these concerns exposing Eureka over HTTPS and forcing the discovery client to authenticate against a discovery server using a private key. Let's discuss these issues in detail.

Registering a secure application

If your application is exposed over a secure SSL port, you should change two flags from the EurekaInstanceConfignonSecurePortEnabled to false and securePortEnabled to true. This forces Eureka to publish instance information that shows an explicit preference for secure communication. The Spring Cloud DiscoveryClient...