Book Image

Hands-On Cloud Development with WildFly

By : Tomasz Adamski
Book Image

Hands-On Cloud Development with WildFly

By: Tomasz Adamski

Overview of this book

The book starts by introducing you to WildFly Swarm—a tool that allows you to create runnable microservices from Java EE components. You’ll learn the basics of Swarm operation—creating microservices containing only the parts of enterprise runtime needed in a specific case. Later, you’ll learn how to configure and test those services. In order to deploy our services in the cloud, we’ll use OpenShift. You’ll get to know basic information on its architecture, features, and relationship to Docker and Kubernetes. Later, you’ll learn how to deploy and configure your services to run in the OpenShift cloud. In the last part of the book, you’ll see how to make your application production-ready. You’ll find out how to configure continuous integration for your services using Jenkins, make your application resistant to network failures using Hystrix, and how to secure them using Keycloak. By the end of the book, you’ll have a functional example application and will have practical knowledge of Java EE cloud development that can be used as a reference in your other projects.
Table of Contents (14 chapters)

Modifying Swarm configuration

The fractions available in Swarm come with reasonable defaults. In the examples that we have seen so far, we didn't touch any configuration and yet we were able to see the applications working. Now, we will show you how you can tune the configuration of Swarm-created services.

Swarm provides a set of tools that allows you to modify the configuration of your applications. In the following section, we will introduce them one by one and show their usage in different scenarios. Let's start with the simplest one: system properties.

System properties

You are able to modify the configuration by specifying system properties. Let's return to our catalog-service. As you saw in the catalog...