Linux

Qualcomm's Snapdrago processor logo
Article

After Years of Linux on ARM, when is the Year of Red Hat on ARM servers?

Bradley Roderick

From hobbyist SoC devices such as the ubiquitous Raspberry Pi to a complete domination of the mobile device market, ARM processors have proven the value of the architecture. It is easy to see why ARM processors were able to explode in this market, given that they are able to pack quite a bit of performance into a rather small physical space. Take for instance Qualcomm's Snapdragon 400 processor, which is used in many products including the Huawei Watch This processor...

MACsec setup with NetworkManager
Article

What's new in MACsec: setting up MACsec using wpa_supplicant and (optionally) NetworkManager

Sabrina Dubroca

A few months ago, on this blog, we talked about MACsec. In this post, I want to introduce the work we've done since then. Since that work revolves around methods to configure MACsec, this will also act as a guide to configure it by two methods: wpa_supplicant alone, or NetworkManager with wpa_supplicant. If you read the previous MACsec post, you probably thought that this whole business of generating keys and creating "secure associations" isn't very convenient, especially given that you...

QinQ Performance
Article

Open vSwitch: QinQ Performance

Eric Garver

In a previous post, we introduced QinQ support for Open vSwitch. This post will investigate how QinQ performs relative to alternatives (VXLAN, GENEVE) in both throughput and CPU utilization. This will give us some understanding why we might consider QinQ over VXLAN or GENEVE. We're going to look at the following tunnel types and configurations: VXLAN-SW VXLAN in software only. No hardware offload. VXLAN-HW VXLAN with hardware offload. This includes UDP tunnel segmentation offload and receives side flow steering. GENEVE-SW...

Red Hat Enterprise Linux
Article

Running HPC workloads across multiple architectures with Red Hat Enterprise Linux

Adrian Reber

In this article, I want to provide some background details about our recently developed demonstration video - “ Running Game of Life across multiple architectures with Red Hat Enterprise Linux “. This video shows the Game of Life running in a heterogeneous environment using three 64-bit hardware architectures: aarch64 (ARM v8-A), ppc64le (IBM Power little endian) and x86_64 (Intel Xeon). If you are not familiar with the rules of this cellular automaton, they are worth checking out via the reference...

Speed and the kernel datapath
Article

The need for speed and the kernel datapath - recent improvements in UDP packets processing

Paolo Abeni

Networking hardware is becoming crazily fast, 10Gbs NICs are entry-level for server h/w, 100Gbs cards are increasingly popular and 200Gbs are already surfacing. While the Linux kernel is striving to cope with such speeds with large packets and all kind of aggregation, ISPs are requesting much more demanding workload with NFV and line rate packet processing even for 64 bytes packets. Is everything lost and are we all doomed to rely on some kernel bypass solution? Possibly, but let's first...

Managing Windows Updates with Ansible in Red Hat Enterprise Linux
Article

New level of automation with Ansible

muayyad alsadi

Ansible is a simple agent-less automation tool that has changed the world for the better. It has many use cases and wide adoption (used by many upstream projects like Kubernetes and there are thousands of rules submitted to Ansible Galaxy). In this article, we are going to demonstrate Ansible. The intention of this article is not to teach you the basics of Ansible, but to motivate you to learn it. Why is Bash scripting not automation? Shell has been the...

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S-RAMP Milestone 2 Screencast

Red Hat Developer Program

S-RAMP is an emerging OASIS standard for a Service Oriented Architecture repository (and accompanying protocol for accessing that repository).

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Run .NET and SQL Server natively on Linux with OpenShift

Red Hat Developer Program

Hear from John Osborne, Sr. Solutions Architect, Red Hat, Harold Wong, Cloud Architect, Microsoft, and Jason Dudash, Specialist Solution Architect, Red Hat in this breakout session at Red Hat Summit 2017 For the past several years, Microsoft's approach has been to make Linux and open source technologies first class citizens in the public cloud. Microsoft engineers participate in key open source communities. In this joint session with Red Hat and Microsoft, we'll demonstrate technologies like .NET and SQL Server running on Red Hat Enterprise Linux-based containers in OpenShift on premise and in Azure. We'll also discuss the development and operational perspectives and things like security patching and scans. https://www.redhat.com/en/summit/2017/agenda/sessions

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2012 Red Hat Summit: Part1; Performance Analysis & Tuning of Red Hat Enterprise Linux

Red Hat Developer Program

In this two-hour session, Douglas Shakshober (Shak) and Larry Woodman will explore the system performance analysis and tuning necessary to maximize the performance of systems running Red Hat Enterprise Linux 5 and 6. They will focus on large systems that run the most common applications such as database servers, Internet servers, and various financial applications on a variety of the common hardware platforms.

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Deploying MongoDB using Linux containers

Red Hat Developer Program

If applications can run in containers and extract the maximum performance from the underlying hardware while respecting security and resource boundaries, why can’t databases? This video demonstrates MongoDB database deployed with Red Hat Enterprise Linux using Linux containers. Red Hat Enterprise Linux 7 enables your database environments to stay both flexible and current by utilizing Linux container technologies. This demo focuses on the advanced deployment scenarios called sharding and discusses the benefits of running containers for that purpose.

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Engineering VP talks RHEL 6 features

Red Hat Developer Program

Key features, themes, and objectives of Red Hat Enterprise Linux 6, in a talk delivered by Engineering Vice President Tim Burke. Find out what's new, what's improved, and what is most important in the newest release of the Red Hat operating system.

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Manage resources for HPC workloads with Red Hat Enterprise Linux 7

Red Hat Developer Program

Red Hat® Enterprise Linux® has a kernel feature called control groups, or cgroups. This feature allows you to allocate resources–such as CPU time, system memory, network bandwidth, or a combination of these resources–among user-defined processes. This feature is also used to implement Linux containers. See how system administrators can gain fine-grained control over system resources and divide them among tasks and users, thus increasing overall system efficiency.

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Red Hat Enterprise Linux 7: Insights into its planning

Red Hat Developer Program

What was Red Hat thinking when it set out to create Red Hat Enterprise Linux 7, it's most ambitious release to date? Hear from Brian Stevens, Denise Dumas, and other key strategists at Red Hat as they discuss the intent behind Red Hat Enterprise Linux 7.

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ING services Poland transforms its data center with Red Hat solutions

Red Hat Developer Program

ING Services Poland needed to reduce IT architecture maintenance costs and accelerate delivery of platforms on which the business applications for clients from the ING Group are built. After implementing Red Hat Enterprise Linux and Red Hat JBoss Middleware technologies, the company has met its objectives to speed up the applications delivery from weeks to days, to reduce costs of services to 1/3 and has managed to win new internal clients.

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Intro to OpenShift Express (Fedora)

Red Hat Developer Program

Intro to OpenShift Express (Fedora) - This video demonstrates how to install the OpenShift Express client utilities on the Fedora operating system. Furthermore, it provides a walk through of signing up for an RHN account using the OpenShift website and details steps to allow a user to create their first express domain. Please go to openshift.redhat.com for more details.

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Installing software using YUM – Red Hat System Administration I (RH124)

Red Hat Developer Program

Red Hat Taste of Training: Installing software using YUM Using content from our Red Hat System Administration I (RH124) course, this video will teach you how to install software using YUM, an application that stacks on top of the Red Hat RPM package format. During the complete 5-day course, students will learn about key command-line concepts and other enterprise-level tools. Through hands-on labs, students are taught how to manage physical storage, how to install and configure software components, how to monitor and manage processes, how to access Linux file systems and secure files, and much more. For more information about Red Hat System Administration I (RH124): http://www.redhat.com/en/services/training/rh124-red-hat-system-administration-i

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Red Hat Enterprise Linux 7: Redefining the Enterprise OS

Red Hat Developer Program

Since its introduction more than a decade ago, Red Hat Enterprise Linux has become the world's leading enterprise Linux platform. Hear from Red Hat executives how Red Hat Enterprise Linux 7 raises the bar yet again and brings the next-generation of IT to customers. Learn more at http://www.redhat.com/virtual

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Linux containers and application isolation - Cockpit and Docker system resource management Part 2

Red Hat Developer Program

The Linux container technology in Red Hat Enterprise Linux now combines resource management, process isolation, and file system separation. Docker uses the Linux container capabilities to provide standardization, ease of use, and portability. See a demo of how to set up multiple containers, deploying an assortment of workloads, and measuring the performance impact of running them at the same time using prototype user interface.

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Identity management in Red Hat Enterprise Linux

Red Hat Developer Program

See a demo of new identity management features in Red Hat Enterprise Linux and ways to use them. Specifically, you will see: - How easy it is to join Red Hat Enterprise Linux systems into Active Directory (realmd, SSSD) and create IdM cross-realm trust. - The end-to-end two-factor one-time password (OTP)-based authentication and centralized management of identities.

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Cox Enterprises Trusts in Red Hat: A Red Hat Customer Success Story

Red Hat Developer Program

Cox Enterprises transitions their critical ERP platform to Red Hat Enterprise Linux. Cox Enterprises is a leading communications, media, and automotive services company. Headquartered in Atlanta, Cox Enterprises has more than 66,000 employees and its revenues are nearly $15 billion. Cox businesses include Cox Communications, the third-largest cable TV provider, Manheim, the world's leading provider of vehicle remarketing services, Cox Media Group, an integrated broadcasting, publishing, and digital media company, and AutoTrader.com, the Internet's largest auto classified marketplace and consumer information website