RHEL

Be sure to follow this new addition to the Red Hat blogosphere at: rhelblog.redhat.com. You can expect to see a great series of technical articles here.

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...

One of the new features for the Developer Toolset (DTS) 2.0 is Eclipse 4.3.0 (Kepler). Aside from various performance improvements to the base platform since Eclipse 4.2 (Juno) a lot of other plugins are being shipped to make life easier for development. The C/C++ Developer Tooling (CDT) is a plugin used to develop, build, run, and debug C/C++ applications in Eclipse. It has support for various toolchains, Makefile/Autotools projects, static analysis, and easy navigation of a code-base thanks to a...

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...

Some months ago, I developed and released a small Puppet module for tuned-adm. As this tool is a nice feature of RHEL, I think it is only fair from me to advertise about it here, on the Red Hat developer blog. Quick overview of 'tuned-adm' (Photo credit: Accretion Disc) To make this brief, this command will take care of tuning the operating system for you, based on the usage you want to make of it. For instance, if you want...

If you have ever worked as a system administrator, you are familiar with developers constantly wanting to use the latest toolchains even to the point of wanting to roll their own packages. Of course, the challenge is, if you are running a production environment, introducing change is always risky. If the change being introduced is from an unknown source, the risk is even higher. As a result, many admins rely on companies like Red Hat to provide them some assurances...

As I discussed in an article entitled Red Enterprise Linux Release Speed, developers sometimes have a problem with how slow Red Hat's Enterprise Linux releases new versions of software. Well, the good news is, Software Collections are here. Software Collections provide Red Hat Enterprise Linux users with newer versions of programming languages and server daemons like python, perl, ruby, php, mysql, mariadb, etc. This is a quick start guide to help you get comfortable with both programming languages and server...

Official announcement : Red Hat Software Collections 1.0 Beta Now Available More information on Software Collections Software Collections Guide Stability addicts can keep quiet, PHP 5.3.3 is still the standard version provided with RHEL-6. We'll soon have an official and supported way to install PHP version 5.4, beside the system version, without any effect on installed components. The announcement tells us the life cycle will be 3 years. Warning: it's a beta version, published for evaluation purposes. Installation Activation of...

A common performance related issue we are seeing is how certain instructions are causing bottlenecks. Sometimes it just doesn't make sense. Especially when it involves lots of threads or shared memory on NUMA systems. For quite awhile a bunch of us have been writing tools to help exploit features of the CPU to provide us insight to not only the instruction of the bottleneck but the data address too. See, the instruction is only half the picture. Having the data...

Unfortunately, not every application is packaged for every distribution. What do you do when you can't find it packaged for Red Hat Enterprise Linux? If you are like most people, you give up or attempt to install it from source. What happens when installing from source goes badly? If you are like most people, you definitely give up. How do you keep up with application improvements or, perhaps more importantly, security fixes? If you are like most people, you periodically...

Recently, I needed to get Django installed with Python 2.7 on Red Hat Enterprise Linux 6. As this is not a directly supported activity, I wanted to document how I went about it. As you might imagine, the generally expected method for install would be to grab the Python 2.7 source tree and then build it. Obviously, that can be a lot of work; is not particularly repeatable; and, potentially, exposes you to more security flaws. As a result, I...

Are you missing out on opportunities to increase your applications' performance? As an application developer building on Red Hat Enterprise Linux, you invest a lot of time and effort into making your applications compelling and useful for your users. You probably also want to see good performance. But beyond good design, careful algorithm selection and compiler optimizations, what can a developer use to boost their application performance? 1. The latest GCC release and associated tools The very first thing a...

Did you ever wish you had newer versions of the software on your Red Hat Enterprise Linux machines? You are probably not alone. Providing new versions of software in rpm is hard, because rpm supports only one version installed on your computer at a time. Multiple versions on one machine can conflict with each other or create unpredictable behaviour in applications that you might not have considered dependencies. Last year, we developed Software Collections to allow you to install newer...

Today Red Hat announces the general availability of version 1.1 of Red Hat Developer Toolset through Red Hat Enterprise Linux Developer Subscriptions. For developers, having ready access to the latest, stable development tools is key to taking advantage of open source innovation. Red Hat Developer Toolset 1.1 bridges development agility with production stability by delivering the latest stable versions of essential C and C++ development tools. By employing Red Hat Developer Toolset, organizations can significantly increase developer productivity and improve...

Wouldn't it be nice if your software development team could use one common set of development tools based on the latest, stable upstream versions for your Red Hat Enterprise Linux development? Think of all the extra years of open source innovation - the features, optimizations and new standards support it would allow your team to build into your products. That would be great, wouldn't it? Fortunately, this is already available to you today, and in this blog post I'll explain...