Linux

Photo by seeweb Countless products uses XML files, whether it is for data persistence, serialization or mere configuration. This is even more true when it comes to the Red Hat middleware portfolio, the JBoss projects having always been keen on using this format for configuration files - on top of the ones specified by JEE such as the famous (or infamous ?) web.xml. While the XML format has some definitive qualities, it is not the easiest format to parse, and...

Introduction Hi, I'm Steve, a member of the Inception team at Red Hat. The Inception team was pulled from different parts of IT to foster DevOps culture in Red Hat. Though we've only been a team for a little over a month, we've been trying to do some early projects to make everyone's lives easier.l We spent quite a bit of time in our early meetings identifying pain points in the current processes. We talked with a few developers, ops...

Whether you're new to developing on RHEL or have been doing it a while, you may get some use from this RHEL Developer Getting Started guide. Think of this as a large "table of contents" for all things developing on RHEL. It walks you through available developer tools and resources, provides a brief description for each, and gives one or more pointers for more information. Download the document here or peruse this file and other resources at developer.redhat.com/RHEL. Let us...

So, yeah, it was in beta testing, but now it's generally available! See the recent Red Hat press release. If you use virtualization in your development (e.g. spinning up VMs for projects), you might find the ability to change proc counts while the guest is running useful. RHEL 6.5 virtualization also adds direct integration with GlusterFS / Red Hat Storage in case you want to play with that in a virtualized test environment. Dynamic storage is definitely getting interesting and...

This is part 3 of a three part article on Continuous Integration Strategies: Simplifying application development on Red Hat® Enterprise Linux® SOFTWARE COLLECTIONS The testing environment requirements are simplified somewhat if your software is built against a Red Hat Software Collection (RHSCL). Red Hat Software Collections provide three primary features: the ability to have multiple versions of software on one OS, certainty that the software is the same across versions of the OS, and the option to refresh components more...

Red Hat Developer Toolset v2.0 was released earlier this year and has received some great feedback from developers, which is always great to hear. But perhaps you'd like to see Red Hat Developer Toolset in action rather than reading about it. If so, here's a recording of a live demo showing you some of the great new features, including the option to create and deploy your C++ application to Red Hat OpenShift from right within the Eclipse IDE. In addition...

This is part 2 of a three part article on Continuous Integration Strategies: Simplifying application development on Red Hat® Enterprise Linux® KEY GOALS Within a Continuous Integration environment there are some key features that are required to encourage an effective process. SOURCE CODE REPOSITORY—JUST THE ONE For the effective operation of CI, it’s essential that all project source code and build components are maintained in a single repository. The repository must contain not just the source code, but all the...

Background At JUDCon 2013 in Boston, Scott Cranton and I presented a talk entitled Resilient Enterprise Messaging with Fuse & Red Hat Enterprise Linux. This technical article is the follow-up work from that presentation. JBoss A-MQ is built on ActiveMQ which is a robust messaging platform that supports STOMP, JMS, AMQP and modern principals in Message Oriented Middleware (MOM). It's built from the ground up to be loosely coupled and asynchronous in nature. This provides ActiveMQ with native high availability...

This is part 1 of a new three-part article about Continuous Integration Strategies. We hope you enjoy it! EXECUTIVE SUMMARY Continuous Integration (CI) offers a method of avoiding the integration issues that typically occur when there are extended periods between developers checking in working copies of code. However, the technique also offers significant benefits where an application is designed to run on multiple versions of a platform and the application and platform are changing. In both cases, Continuous Integration facilitates...

Recent Red Hat Developer Blog articles have explained what Software Collections are, what they're good for, and how you can leverage them to easily enhance your development environment leveraging the latest and greatest versions of your favorite programming languages and relational database backends. But the software collection packages available for each language comprise only a subset of what is available — usually the core and some popular additions. Until that day when repositories have sprung up with all the additional...

I've recently released a tool called vm-truck-loader to automate virtual machine creation with VMware vCenter. Using a simple CSV file, and leveraging the API exposed by vCenter, this Java based command line tool enables you to design a fully automated deployment process, and can be a key to implement a proper Standard Operating Environment around vCenter. In this regard, I thought I'd do a quick entry on this blog, to briefly describe what the tool can do. Instrumenting virtual machine...

As I mentioned a couple of weeks ago, many of you have read Slavek's prior articles on software collections - now you can hear him talk! Slavek, from Red Hat's engineering team that brings us software collections, is an excellent presenter having spoken about collections numerous times at the Red Hat Summit. If you have questions about how to use collections, attend today's webinar. Title: Deep dive into Red Hat Software Collections Software Collections are the technology behind Red Hat®...

Interested in DevOps but not sure where to start? How about getting started in 3 steps? Check out this insightful Dr. Dobb's article by Langdon White, co-blogger and developer evangelist, and Robyn Bergeron, Fedora Project Leader. "DevOps need not be a top-down mandate to succeed. With these steps, developers and operations staff can lead the way implementing DevOps techniques and later show the organizational benefits to management." Enjoy the article - read it here ! We're beginning to assemble some...

An update of this article can be found here. My team here at Red Hat maintains the web server stack in Fedora and RHEL. One of the cool projects we've been working on recently is Software Collections. With RHEL we've always suffered from the tension between offering a stable OS platform to users, and trying to support the latest-and-greatest open source software. Software Collections is a great technology we're using to address that tension. Remi Collet has blogged about the...

Many of you have read Slavek's prior articles on software collections - now you can hear him talk! Slavek, from Red Hat's engineering team that brings us software collections, is an excellent presenter having spoken about collections numerous times at the Red Hat Summit. If you have questions about how to use collections, this October 31 webinar is your chance. Title: Deep dive into Red Hat Software Collections Software Collections are the technology behind Red Hat® Software Collections and Developer...

It's just over one month since we released Red Hat Software Collections V1 and we're interested in getting your feedback about them. Please fill out the form below (or follow this link) and let us know which components you're using. And while you're at it, tell us what additions and/or suggestions you have for future RHSCL releases - enter your suggestions on the form, or comment on this article. We've already had a ton of requests, but want your input...

As you certainly know, DevOps is all the rage these days. While DevOps is many things, some pure "buzz" and some legitimate, we aren't going to talk about all that. Instead, let's talk about one small piece of the problem, simplifying the consistency of deployment platforms. Part of what has made DevOps, and, by extension, Continuous Deployment concepts possible has been the simplification, at least on some vectors, of the modern data center. Starting with virtualization, extending to configuration management...

Here are a few interesting excerpts from the recent Red Hat Enterprise Linux 5.10 announcement for general availability and today's Red Hat Enterprise Linux 6.5 beta announcement. Red Hat Enterprise Linux 5.10 now Generally Available Red Hat announced the release of Red Hat Enterprise Linux 5.10, the latest minor release of the mature Red Hat Enterprise Linux 5 Platform. With an emphasis on providing greater stability for critical applications, Red Hat Enterprise Linux 5.10 offers enhanced features for reliability and...

Red Hat intended for developers to integrate Developer Toolset 2.0 (DTS) and Red Hat Software Collections 1.0 (RHSCL). As you may not realize, inside the DTS is a copy of Eclipse and you can use that with any software collection. In other words, you can use PyDev, with the Python 2.7 Software Collection from RHSCL in the Eclipse from DTS. Let's find out how. First, let's make sure you have the right repos, [lwhite@lwhite-laptop ~]$ sudo yum repolist Loaded plugins...

Now that Red Hat Software Collections are generally available, here is the first of a series of technical webinars (that I mentioned recently). The presenters are two good friends and colleagues of mine: Brian Gollaher (product manager) and Langdon White (developer evangelist). This is a great chance to learn about selecting runtimes and versions, how to run versions side-by-side, and more. And you can hear what viewers asked View it for free here!

Mike Guerette recently posted an announcement on the Developer Blog that Red Hat Software Collections 1.0 is now generally available. What is Software Collections and what value does it provide to developers? In a nutshell, Software Collections allows multiple versions of a software ecosphere to be installed on a machine. For example, with Software Collections you can have Perl 5.10, Perl 5.14, and Perl 5.18 installed on a RHEL 6 system. Perl 5.10 is the version that comes with the...

Now that Red Hat Software Collections are generally available, please join us at this free webinar to learn about them. This will be the first in a series of technical webinars, with many or most be related to Red Hat Software Collections. The presenters are two good friends and colleagues of mine: Brian Gollaher (product manager) and Langdon White (developer evangelist). This is a great chance to learn about selecting runtimes and versions, how to run versions side-by-side, and more...

[EDITOR's Note: This article introduces V1.0 of Red Hat Software Collections, but we are now at 2.0. Read about the latest here.] We've had so much interest in Red Hat Software Collections during beta testing and now here they are! Red Hat has announced the general availability of Red Hat Software Collections 1.0! "Available via select Red Hat Enterprise Linux subscriptions, Red Hat Software Collections delivers the newest, most stable versions of open source runtime components to subscribers on a...

gcc developers - this is what you've been asking for! Red Hat Developer Toolset V2.0 is now generally available. Red Hat has "announced the general availability of Red Hat Developer Toolset 2.0. Available to all Red Hat customers with an active Red Hat Enterprise Linux Developer subscription, Red Hat Developer Toolset provides access to the latest stable versions of open source development tools on a separate, accelerated life cycle." Delivered as a parallel set of the latest stable tools to...