RHEL

Red Hat Enterprise Linux 7 is now GA and so it's time to write some code and/or port your applications. So let's take a quick inventory of development tools, shall we? With RHEL, there are 2 primary sets of toolchains for you to use. First, there's base RHEL 7 tools (like RHEL 6) that will be supported with RHEL 7 for 10 years (more below). Second, there are complementary tools in Red Hat Software Collections (RHSCL) and Red Hat Developer...

Yes, you may have heard that Red Hat Enterprise Linux 7 is now generally available. ;) But here is more good news: RHEL 7 is now available in all Amazon Web Services (AWS) regions including GovCloud (US)! Here's what Amazon's Terry Wise (head of Worldwide Partner Ecosystem, Amazon Web Services) had to say in a Red Hat press release this week: “Red Hat and Amazon Web Services have worked closely together since 2007 to make Red Hat Enterprise Linux widely...

Today marks an exciting milestone for Red Hat as we share news of the general availability of Red Hat Enterprise Linux 7, the latest major release of the flagship platform. Red Hat Enterprise Linux 7 not only lays the foundation for the open hybrid cloud and serves enterprise workloads across converged infrastructures; it pushes the operating system beyond today’s position as a commodity platform. Built to meet modern datacenter demands along with next-generation IT requirements, Red Hat Enterprise Linux 7...

It looks like it will be worth "seeing" this virtual event: Red Hat will host “ Redefining the Enterprise Operating System,” a webcast and virtual event at 11 a.m. EDT on Tuesday, June 10, 2014. Attendees will learn more about how Red Hat Enterprise Linux has: transformed the IT industry. redefined the server operating system. enabled unparalleled choice for customers. created the foundation for cloud computing. The event is open and complimentary for all Red Hat customers, partners, contributors, and...

Red Hat Enterprise Linux 7 Release Candidate now available "As mentioned during Red Hat Summit 2014 last week, we are excited to announce that Red Hat Enterprise Linux 7 Release Candidate (RC) is now publicly available for testing. A pre-release build of Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 7 RC offers a near-final look at Red Hat’s flagship operating system crafted for the open hybrid cloud, building upon the feedback collected during the beta program for Red...

With April showers, comes talk about containers. (Well, not exactly, but there's a lot of container discussion going on these days.) Bhavna has produced this excellent article to summarize Red Hat's efforts on them. Here's an excerpt: "Let’s dive into world of containers. Red Hat customers often desire for their applications to run in a secure environment and have been seeking, whether they actually know it or not, a fully supported light weight application isolation solution. At the other end...

Please take a moment to give us your input and feedback on Red Hat Enterprise Linux 7 Beta. Thank you!

As Software Collections are getting popular, there are more and more people asking how they can build their own collections and/or extend collections in RHSCL. In this article, I will demonstrate how to extend python27 collection from RHSCL 1.1 (Beta), adding a simple Python extension library. I'm going to work on a RHEL 6 machine throughout this whole tutorial. I'm assuming that readers have basic knowledge of RPM building and Software Collections concept. General Notes This tutorial uses a technique...

Apologies that this has been so long in coming, but I was certain that we had already written a post on this subject. What subject you ask? How does one set one or more software collections as automatically enabled for your login. Some of you may consider this obvious, but there are a number of ways to accomplish this goal. First, you just "source" the enable script from your .bashrc. For example source /opt/rh/python33/enable However, as this Red Hat kbase...

Announcement: "Hortonworks and Red Hat Deepen Strategic Alliance" Here are some highlights from Monday's announcement: "Immediate initiatives that are included in the expanded Hortonworks and Red Hat strategic alliance include "Data architects will be able to combine data in a single, scalable open source repository. Available in beta software version, the Hortonworks Data Platform (HDP) combined with Red Hat Storage provides a secure and resilient general-purpose storage pool with multiple interfaces, including Hadoop, POSIX and OpenStack Object Storage (Swift). This...

Here's a short video about what Red Hatters are saying about RHEL 7 beta, the next-generation of the world’s leading Linux platform. http://www.youtube.com/watch?feature=player_embedded&v=n8cbR2AtjAQ It can also be seen on the RHEL blog for SysAdmins: rhelblog.redhat.com.

Repost from Red Hat Enterprise Linux Blog. "In the coming weeks, we’ll explore the inner workings of Red Hat Enterprise Linux 7 Beta – what makes it tick and how it will make your organization tick better. But for now, read all about what the next generation of Red Hat Enterprise Linux 7 will entail here – better yet, try it out for yourself, and enter a drawing to win $500 by telling us what interests you most."

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...

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...