Red Hat Enterprise Linux

Step-by-step guide on HOW-TO setup the Red Hat 3scale API Management OpenID Connect (OIDC) integration with Red Hat Single Sign On for API Authentication.

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Arm TechCon 2017 - Embedded, IoT, Networking and no Server focus Last month was Arm TechCon, the annual developer conference showcasing offerings from Arm and its partners. Arm laid out its vision and strategy to achieving even greater integration in its processors and circumventing the slowing Moore’s law. As always, there was a bevy of new product announcements but overall, the show seemed to lack the energy of the last few years and especially the excitement of last year after...

The docker containerized environment is a software platform, which provides an abstraction of operating-system-level virtualization. To know more you can read this article: https://docs.docker.com/engine/docker-overview/ You need an available container-based application. Check the documentation for the right procedure for installation for your OS: https://docs.docker.com/engine/getstarted/step_one. Here, I am going to create a java application and run it by using a container-based application. This example includes the following steps: Create a directory by using below command. $ mkdir java-docker-application 2. Create a java...

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Note: For the most up-to-date information on the Developer for Individuals Subscription, check out our FAQ . In March of 2016, we introduced the no-cost Red Hat Enterprise Linux Developer Subscription and adoption for it has been great. I pleased to share that we've added new repos to this no-cost subscription for SAP Solution development. "...to help support the stable, consistent creation of applications using components of SAP HANA and the SAP NetWeaver® technology platforms, Red Hat is now making...

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JBoss Tools 4.5.1 and Red Hat JBoss Developer Studio 11.1 for Eclipse Oxygen.1A are here waiting for you. Check it out! Installation JBoss Developer Studio comes with everything pre-bundled in its installer. Simply download it from our JBoss Products page and run it like this: java -jar jboss-devstudio-.jar JBoss Tools or Bring-Your-Own-Eclipse (BYOE) JBoss Developer Studio requires a bit more: This release requires at least Eclipse 4.7 (Oxygen) but we recommend using the latest Eclipse 4.7.1A Oxygen JEE Bundle since...

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We're extremely pleased to announce updates to our Red Hat Development Suite of products, including Container Development Kit 3.2, JBoss Developer Studio 11.1, OpenJDK 9 and our DevSuite 2.1 Installer. As always, our focus is on increasing usability for developers, while adding new features that matter for developers targeting Red Hat platforms. Red Hat Development Suite is a curated, integrated set of desktop tools especially suited for developing Linux container-based microservices. It combines JBoss Developer Studio, Red Hat Container Development...

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llvm-toolset is a new software collection that packages together a number of the tools distributed by the LLVM project, including: LLVM tools and libraries, clang, clang-tools-extra, and lldb. Installing llvm-toolset For updated installation instructions, see How to install Clang/LLVM 6 on Red Hat Enterprise Linux. Clang/LLVM 5.x is packaged in as llvm-toolset-7, which is available in the rhel-7-server-devtools-rpms repo for RHEL 7. (If you don’t already have RHEL 7, Red Hat offers no-cost RHEL subscriptions for development use here.) You...

Learn how to start adopting a security-like mentality, also known as the "security mindset" in part four of this four-part video series.

Learn how to start adopting a security-like mentality, also known as the "security mindset" in the first half of part four in this four-part video series.

Learn about authorization such as user privileges, levels of access, and how they're different in part three of this four-part video series.

Learn about numeric errors and the dangers of using incorrect data types in part two of this four-part video series.

One of the new software collections we’ve introduced this fall is for Go, the programming language that aims to make it easy to build simple, reliable, and efficient software. Go is a compiled, statically typed language in the C/C++ tradition with garbage collection, concurrent programming support, and memory safety features. In go-toolset-7, we’re including everything you need to start programming in Go on Red Hat Enterprise Linux 7, in the familiar format of software collections. In this release, we’re shipping...

We know that containers in Openshift or Kubernetes don't persist data. Every time we start an application, it is started in a new container with an immutable Docker image. Hence, any persisted data in the file systems is lost when the container stops. Hence if an application or container is rebuilt or restarted than we can't view previous logs or if we are using containers with mysql or any other database then schema, tables, and all data will be lost...

Fundamentals on using Red Hat Enterprise Linux with the Red Hat Developer subscription.

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RHEL 7 provides the Apache HTTP Server version 2.4 and PHP version 5.4. The most common configuration for Apache httpd and PHP uses, but this has some limitations and drawbacks: a single PHP version of mod_php can be used mod_php run in the httpd process, without any isolation mod_phpis only supported for the prefork MPM This article will explain how to configure Apache httpd to delegate PHP scripts execution to a backend using the FastCGI protocol, how to use a...

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Developers - new versions of GCC, Node.js, PHP, Python for Red Hat Enterprise Linux & OpenShift Container Platform. Plus new compilers: Clang/LLVM, Go, Rust

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The release of OpenShift Container Platform 3.6 brings support for vsphere cloud provider. This provides vsphere VMDK dynamic provisioning for persistent volumes for container workloads. The storage presented to vsphere virtual machines as a VMDK has ReadWriteOnce access mode. In the OCP 3.6 on vSphere reference architecture, much of this process is automated and can be implemented easily. Virtual Machine Disks or VMDKs exists in virtual machines. Configuring the OCP cluster for vsphere cloud provider support requires: Master Node Configuration...

Software Collections (SCL) give you the power to build, install, and use multiple versions of software on the same system, without affecting system-wide installed packages. Therefore, the Software Collections packaging technique is used a lot for building stacks for Red Hat Enterprise Linux and CentOS, especially dynamic languages (Python, Ruby, NodeJS) or databases (PostgreSQL, MariaDB, MongoDB). Avoiding Conflicts The SCL technique is based on avoiding conflicts on three levels: Filesystem (files are put into an alternate directory under /opt/rh) RPM...

As many of you are aware, Oracle released JDK 9 on 21st September, 2017. According to Oracle, this is the biggest release in Java history after JDK 5 & JDK 8. JDK 9 has lot of interesting new features that will change the way developers code. I would liketo list of some cool, new features in JDK 9 that every developer should be aware of. This is list This list is an overview. For more detailed information, please review the...

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According to Wikipedia, entropy is the randomness collected by an operating system or application for use in cryptography or other uses that require random data. Entropy is often overlooked, misconfigured or forgotten and it can originate in sporadic errors whether it can be timeouts, refused connections, etc. Such errors are difficult to debug as the errors happen only when there is not enough entropy available. This article tries to explain briefly how to check if this can be a problem...

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I am pleased to announce the immediate availability of Red Hat Software Collections 3.0 Beta , Red Hat’s newest installment of open source development tools, dynamic languages, databases, and more. Delivered on a separate lifecycle from Red Hat Enterprise Linux with a more frequent release cadence, Red Hat Software Collections bridges development agility and production stability by helping you create modern applications that can be confidently deployed into production. Most of these components are also available in Linux container image...

Many of you might be aware that Oracle released JDK 9 officially on 21st September, 2017. After JDK 5 and JDK 8, JDK 9 is supposed to be the most effective release from application development perspective. JDK 9 has introduced a lot of new functionality, language level features and API enhancements for developers. This article is about one of command line tool named JShell introduced in JDK 9. Lets learn about it in short. What is JShell? JShell was introduced...

Prerequisite: Hands on Knowledge of REST API Development using JAX-RS. REST Services has been an integral part of complex enterprise applications for several years. Developers generally prefer two APIs listed below for building REST API in their enterprise applications. JAX-RS – Part of JEE Specification with different implementations like RestEasy, Jersey, Restlet etc. Spring Boot – An OpenSource Spring Community Project best suited for Microservices-based applications. In this Article, we will learn how to handle Exceptions gracefully in Rest APIs...

This blog is to resolve the following issues/answering the following questions. How to enable a repository using the Red Hat Subscription Manager/yum? Need to access a repository using the Red Hat Subscription Manager/yum? How to disable a repository usisystem register with rhn classicng the Red Hat Subscription Manager/yum? How to subscribe a child channel using the Red Hat Subscription Manager/yum? To enable/disable repository using Subscription-Manger or Yum-Utils you'll need: Red Hat Enterprise Linux 6 or higher. Red Hat Subscription Management...

This blog describes how a script can be used to automate Open vSwitch PVP testing. The goal for this PVP script was to have a quick (and dirty) way to verify the performance (change) of an Open vSwitch (DPDK) setup. This script either works with a Xena Networks traffic generator or the T-Rex Realistic Traffic Generator. For details on what the PVP test does, please refer to the following blog post, Measuring and comparing Open vSwitch performance. This setup tutorial...

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