Linux

New releases: Red Hat Developer Studio 12 and Container Development Kit 3.5. Learn about the new features and updates to other developer tools for Windows, macOS, and Red Hat Enterprise Linux.

Clang tools and newer versions of GCC can be quite helpful for better warnings and error messages during C/C++ development. This article shows how you can easily install the latest supported Clang 5 and GCC 7 compilers using yum on Red Hat Enterprise Linux. It also provides tips for working with software collections.

The most common problem when people are deploying an Open vSwitch with Data Plane Development Kit (OvS-DPDK) solution is that performance is not as expected. Here's how to configure thread affinity, verify that it’s set up correctly, and ensure no other threads are using the CPU cores.

How to debug and avoid out-of-memory issues with Open vSwitch with the Data Plane Development Kit (OvS-DPDK). It explains the situations in which you can run out of memory and shows the relevant log entries, and it also provides tips for further debugging.

If you need to build some Python-based microservices, one way to do it is to install Python in a Red Hat Enterprise Linux virtual machine and use Flask, a microframework that makes building RESTful services easy.

Learn how to create an Ansible Playbook Bundle (APB) and customize it to configure an external remote host (through SSH), explore what goes on "under the hood," and get tips for troubleshooting APBs.

Reviewing source code can be helpful in understanding how code works, but the static view may not give you a complete picture. The paths taken through code are heavily data dependent. Learn how to use Systemtap and debuginfo to dig into the Ruby interpreter internals on Red Hat Enterprise Linux 7.

We are pleased to announce the general availability of: Red Hat Software Collections 3.1 (Ruby 2.5, Perl 2.26, PHP 7.0.27, PostgreSQL 10, MongoDB 3.6, Varnish 5, HAProxy 1.8, Apache 2.4 update) Red Hat Developer Toolset 7.1 (GCC 7.3) Clang/LLVM 5.0, Go 1.8.7, Rust 1.25.0

Red Hat Enterprise Linux 7.5 is now live. Red Hat’s multi-architecture initiative is a new milestone: all supported architectures x86_64, PowerPC Big/Little Endian, s390x, and now 64-bit Arm and IBM POWER9 were simultaneously released. The Cockpit Web GUI can be used for complex admin tasks without using the CLI.

If you're running Red Hat Enterprise Linux server on Microsoft Azure, you may want to shut down and deallocate the VM using commands inside of the VM itself for automation or just for convenience. This article shows how a VM can shut itself down and deallocate its resources using the Azure CLI 2.0.

Have you ever thought about having your own cloud environment? A local cloud is one of the best things you can do to better understand all the gears that run inside a highly productive environment. How do I know that? I've done it! And I'm ready to show you how I did, and how you can do it.

Twice a year, Red Hat distributes new versions of compiler toolsets, scripting languages, open source databases, and/or web tools, etc., so that application developers will have access to the latest, stable versions. These Red Hat supported offerings are packaged as Red Hat Software Collections.

Red Hat adds/updates web tools for beta: HAProxy 1.8, Varnish 5.0, Apache httpd 2.4 - Twice a year, Red Hat distributes new versions of compiler toolsets, scripting languages, open source databases, and/or web tools, etc. so that application developers will have access to the latest, stable versions. These Red Hat supported offerings are packaged as Red Hat Software Collections.

Clang and LLVM, GCC, Go, Rust - Twice a year, Red Hat distributes new versions of compiler toolsets, scripting languages, open source databases, and/or web tools, etc. so that application developers will have access to the latest, stable versions. These Red Hat supported offerings are packaged as Red Hat Software Collections.

Red Hat open source databases in beta: Adds PostgreSQL 10, MongoDB 3.6; updates MySQL 5.7 - Twice a year, Red Hat distributes new versions of compiler toolsets, scripting languages, open source databases, and/or web tools, etc. so that application developers will have access to the latest, stable versions. These Red Hat supported offerings are packaged as Red Hat Software Collections.

This article is for people interested in long-term Linux kernel maintenance. It introduces you to tools that can help keep the binary interfaces between the kernel and its loadable modules stable during the entire lifetime of a supposedly stable kernel, while code is modified.

In a few weeks, the Fast Datapath Production channel will update the Open vSwitch version from the 2.7 series to the 2.9 series. This is an important change, a wealth of new features and fixes all related to packet movement will come into play.

This article covers how to calculate how much huge page memory is needed with Open vSwitch-DPDK? In order to maximize performance of the Open vSwitch DPDK datapath, it pre-allocates hugepage memory. As a user you are need to say how much.

This article summarizes work that was done to make GCC 8 more usable by providing easier to understand warning and error messages. Many of these improvements will help you quickly recognize those common silly mistakes.

running the Red Hat Container Development Kit (CDK) With Nested KVM. Red Hat Container Development Kit (CDK) relies on virtualization to create a Red Hat Enterprise Linux (RHEL) virtual machine to run OpenShift (based on Kubernetes).

Red Hat has announced Command Line Heroes (CLH), a new, original podcast from Red Hat hosted by Saron Yitbarek of CodeNewbie. Learn how to get a no-cost Red Hat Enterprise Linux subscription for developers.

This blog post will go over two changes with SCTP Stream Schedulers and User Message Interleaving, pointing out the benefits of using the stream schedulers and especially when using them together with the new I-Data chunks.