Red Hat Software Collections 2.3 now beta

Today, Red Hat announced the beta availability of Red Hat Software Collections 2.3, Red Hat’s newest installment of open source web development tools, dynamic languages, and databases. Delivered on a separate lifecycle from Red Hat Enterprise Linux with a more frequent release cadence, Red Hat Software Collections bridges developer agility and production stability by helping to accelerate the creation of modern applications that can then be more confidently deployed into production.

New additions to Red Hat Software Collections 2.3 Beta include:

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Migration of Red Hat Enterprise Linux 5 or 6 to Red Hat Enterprise Linux 7 with the Preupgrade Assistant

This article describes how an administrator can migrate Red Hat Enterprise Linux 5 or Red Hat Enterprise Linux 6 to Red Hat Enterprise Linux 7 with the help of the Preupgrade Assistant. The Preupgrade Assistant is a tool which assesses your running system for anything that might adversely affect the success of your migration.

As Red Hat Enterprise Linux 5 will have only extended update support after March 2017, administrators will find a tool like that useful to help them migrate their systems to Red Hat Enterprise Linux 7. The migration from Red Hat Enterprise Linux 5 to Red Hat Enterprise Linux 6 is not covered by the Preupgrade Assistant, nor is it planned.

Note: The Preupgrade Assistant can also be used for the in-place upgrade from Red Hat Enterprise Linux 6 to Red Hat Enterprise Linux 7 but this is out of scope of this article. The in-place upgrade from Red Hat Enterprise Linux 5 to Red Hat Enterprise Linux 7 is neither supported nor planned.

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Writing Microservices: An Example Through a Simple To-Do Application

Microservices are becoming a new trend, thanks to the modularity and granularity they provide on top of advantages like releasing applications in a continuous manner. There are various platforms and projects that are rising which aims to make writing and managing microservices easy.

Keeping that in mind, I thought, why not make a demo application that can give an example of how microservices are built and how they interact. In this article, I will be building a small application using the Microservice Architecture (MSA).

The application will be a super simple To-Do management list. So, let’s have take a look at what we are going to build and how we are going to build.

Editor’s note: This article references Fedora, which is the upstream project for Red Hat Enterprise Linux (RHEL) — now free for developers. This tutorial should also work on RHEL, just replace ‘dnf’ with ‘yum’ wherever appropriate.

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For more information about Red Hat OpenShift and other related topics, visit: OpenShift, OpenShift Online.

Keeping track of my subscriptions using the Red Hat Content Delivery Network API

In a previous post, where-have-all-my-subscriptions-gone, I mentioned that you can access the Red Hat Content Delivery Network (CDN) using its API — allowing you to query CDN for subscriptions and their usage, registered hosts, and more as well as unregistering hosts, and more.

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