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Migration of Microservice Applications From WebLogic to Openshift

The need for an environment to put software applications into service is a concept that is contemporary with the history of software development. While the software dimension of the business changes, there are also changes and improvements in technology, CI/CD practices, usage scenarios, and operational expectations — the environmental practices that allow the software to serve.

In this article, we will discuss our experiences with the seamless migration of Spring Boot (version 2.5.6) microservice applications from Oracle WebLogic to the Red Hat OpenShift Container Platform. Also, the practices to ease and ensure the parallel running of applications in both platforms will be discussed.

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DOAG 2021 Conference Report

The DOAG 2021 conference took place November 16-18. This is the long-running annual event organized by the German Oracle technology user community — one of the largest in the world. Due to the pandemic, the 2021 event was virtual. There is always some Java-related content in the event, including on Jakarta EE, WebLogic, Coherence, and Helidon. I delivered two talks on Jakarta EE, WebLogic, and Azure.

DOAG 2021 Conference and Exhibition Cover

Running WebLogic on Azure Kubernetes and Virtual Machines

On the second day of the conference, I had the relatively rare opportunity to deliver a talk titled “Running WebLogic on Azure Kubernetes and Virtual Machines”. The material covers the key work Microsoft and Oracle is doing to power WebLogic on Azure. The work includes tools, solutions, guides, samples, and scripts to fully enable WebLogic on both Azure Virtual Machines as well as the Azure Kubernetes Service (AKS). The solutions support simple use cases such as easily creating a single working WebLogic instance. They also support common use cases such as clustering, load-balancing, failover, disaster recovery, database connectivity, caching via Coherence, consolidated logging via ELK, and Azure Active Directory integration. The introductory session includes demos for VMs and AKS. I also cover the longer-term roadmap for WebLogic on Azure. The slides for the talk are available on SpeakerDeck.

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Modernizing the Java EE Medrec App

Tutorial: Refactoring the Medrec Application into Microservices

Legacy Java applications are difficult to modernize. Enterprises rely on these monolithic apps to power their businesses but face an urgent mandate to move to the cloud and adopt a cloud native architecture. The following sections track the process of refactoring the Medrec application (also known as the Avitek Medical Records application), a monolithic WebLogic sample Java EE application, into microservices and deploying the new microservices on Oracle Container Engine for Kubernetes (OKE).

This tutorial is also available on the vFunction website.