James Falkner

Recent Posts

Installing JBoss EAP 7 on RHEL using RPMs

JBoss EAP 7 was recently released, and brings with it a whole host of new features and support, such as support for Java EE 7, Undertow (a highly scalable web server), reduced port usage, graceful shutdown, improved GUI and CLI management, and much more.

Go ahead and download it, unzip, and run bin/standalone.sh and check out all these great features. What’s that? It didn’t work? Did you check that your JRE is compatible? Are there outstanding incompatibility or security issues that may be resolved in an available patch? Perhaps you’ve already installed it elsewhere on your system and you are trying to install a conflicting version. You’re not running it as root are you?

ZIP files are awesome for getting bits up and running quickly (as a developer I use them myself quite a bit), but its simplicity hides many issues related to production software management, such as those I just mentioned. It’s perfect for cross-platform developers or those non-RHEL CI/CD setups but for production RHEL systems it’s the tl;dr of enterprise software deployment. This is where Red Hat and RPM can help. You can be sure of what you’re installing, that it’ll work securely, that you’ll know it’s there when asked, and that it’ll be manageable using your other investments (think RHEV+RHEL+Satellite+JBoss).

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Offline CLI with JBoss EAP 7

Offline CLI with JBoss EAP 7

Over the years, I’ve come across many command line interfaces (CLI) to larger applications, each with varying levels of access and power. Having a CLI at all is a great first step for an application, as it opens up a much wider range of possibilities: administration, extension, and trust.

CLIs also promote scriptability – the ability to create and maintain repeatable scripts, and the easier it is to develop said scripts, the better. Sometimes scripts can solve issues that developers of the app never thought of. (Pro tip: find good user experience designers who know the product and are comfortable on the command line, then put them in charge of the CLI user experience. Your users will love you.

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Maven mirrors on OpenShift with and without Source to Image (S2I)

velocimetroI’m guessing if you’ve done enough repeated builds on OpenShift, using Maven, that you are probably aware of the “download the internet” phenomenon that plagues build times. You start a build, expecting all those Maven dependencies you downloaded for your last build to be re-used, but quickly see your network traffic ramp up while the same 100MB of jars are downloaded again and again. Even builds of a few minutes tend to grind on me, frustrate me as a developer when I’m trying to test/deploy/fix quickly.

Thankfully, Maven has a nice feature that allows you to set up local mirrors that cache dependencies and make them available to future builds, only updating from the upstream repo as needed on a regular (and configurable) schedule.

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Building JBoss Projects with PatternFly and AngularJS

Recently I’ve been looking into different UI tech in use for apps built onPatternFly Logo top of Red Hat middleware, and I’ve discovered that many of Red Hat’s products use PatternFly (in differing capacities) for their administrative UIs. PatternFly is “A community of designers and developers collaborating to build a UI framework for enterprise web applications.” (from the website). There are also components, directives, etc, for AngularJS projects (which I really like).

This sounds awesome, particularly because I’m a terrible designer, so I thought I’d take a crack at converting an existing demo to use PatternFly, and along the way learn more about the framework and its best practices. These are concepts you can use in your own projects when building JS-heavy projects using Maven (which has about a billion ways to do things).

You can find the demo on jbossdemocentral, along with instructions for building it. In this article, I will describe some of the highlights of what I learned.

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