Linux permanently changed the landscape of the datacenter by creating a community approach to rapid innovation. Its introduction and widespread adoption have fueled a shift from closed to open systems, often times providing greater resiliency than other operating environments. Commodity x86 architectures are only one slice of a much larger market for reliable open source enterprise-class systems – and Linux has for many years been a cross-platform operating system. For example, did you know that Red Hat Enterprise Linux also runs on IBM’s Power Systems (POWER) and z Systems architectures? These options give IT organizations flexibility with respect to hardware for workloads and use cases ranging from big data analytics to cloud computing. Ensuring that Red Hat Enterprise Linux runs on IBM’s Power Systems and z Systems architectures gives our customers a broad range of application and deployment choices.
Red Hat Enterprise Linux for Power and Red Hat Enterprise Linux for System z are built
Continue reading “What’s Moving in the World of POWER?”
In my previous post I reviewed the trends related to the integration of Linux systems into environments managed by Active Directory (AD). In this post I will review two integration options, namely: direct integration and indirect integration.
The direct option is, not surprisingly, when your systems are integrated into AD directly (i.e. your Linux systems communicate directly with AD), while the indirect option leverages an intermediary server (see figure below).
Continue reading “Aspects of Integration”
Red Hat and Cisco have a long history of offering joint solutions that benefit our mutual customers and address a gamut of IT challenges, from server sprawl to cloud computing. Both companies consistently foster technological innovation and work towards breaking new ground in computing, including a history of driving world-record performance across a wide range of industry-standard benchmarks.
Industry standard performance benchmarking, driven by groups like TPC and SPEC, goes all the way back to 1988. Many of these benchmarks have driven the development of faster, cheaper, and more efficient computer technologies over the course of the past quarter century.
With over a hundred of benchmark records to its name, Red Hat Enterprise Linux is known to power some of the most
Continue reading “Red Hat Enterprise Linux: Powering the World’s First Big Data Benchmark Results with Cisco”
This post is the second in a series of blog posts about integrating Linux systems into Active Directory environments. In the previous post we discussed dishwashers and, more seriously, some basic principles. In this post I will continue by exploring how the integration gap between Linux systems and Active Directory emerged, how it was formerly addressed, and what options are available now.
Let’s start with a bit of history… before the advent of Active Directory, Linux and UNIX systems had developed ways to connect to, and interact with, a central LDAP server for identity look-up and authentication purposes. These connections were basic, but as the environments were not overly complex (in comparison to modern equivalents) – they were good enough for the time. Then… AD was born.
Active Directory not only integrated several services (namely: LDAP, Kerberos, and DNS) under one hood, but it also
Continue reading “Closing the Integration Gap”
Have you ever purchased a new dishwasher? For those of you who have, you know that the dishes don’t get washed until your “purchase” is picked-up/delivered, the old dishwasher is removed, and the new unit is hooked-up. In fact, until the new dishwasher is hooked-up, it simply doesn’t work. The dishwasher can be smart, stylish, noiseless, and/or energy-efficient… but none of this matters if it’s not properly connected. At the end of the day, if you want to enjoy the luxury of automatic dish washing, one thing is clear: your new dishwasher needs to be hooked-up.
The act of hooking-up a dishwasher is not unlike adding a Linux system to an existing enterprise IT environment. When you deploy a Linux system, it too needs to be “hooked-up”. As the data that flows through your environment consists of different kinds of objects (e.g. users, groups, hosts, and services) the associated identity information is not unlike the water in your dishwasher. Without this identity information
Continue reading “An Introduction to Interoperability Challenges in the Modern Enterprise”
The memory subsystem is one of the most critical components of modern server systems–it supplies critical run-time data and instructions to applications and to the operating system. Red Hat Enterprise Linux provides a number of tools for managing memory. This post illustrates how you can use these tools to boost the performance of systems with NUMA topologies.
Continue reading “Mysteries of NUMA Memory Management Revealed”
The OpenShift Online Technical Operations team was looking forward to the beta availability of Red Hat Enterprise Linux Atomic Host. In fact, they participated in early sprints as part of the Atomic Special Interest Group (SIG) to help make sure Red Hat Enterprise Linux Atomic Host had the operational “beef” to stand high alongside Red Hat’s other enterprise products. Part of this process led to us running the unreleased bits in OpenShift Online prior to the beta announcement.
That said, we’re not using it to run some corner niche of our infrastructure. Instead, we are using the Red Hat Enterprise Linux Atomic Host + Docker combo to run our reverse proxy tier. This means that every API, www.openshift.com, and web console request made to OpenShift Online runs through this tier.
So why all the interest? The small size of Red Hat Enterprise Linux Atomic Host is the
Continue reading “How Red Hat Enterprise Linux Atomic Host Powers OpenShift Online”