High-Availability Storage with GlusterFS on Debian 8 – Mirror across two storage servers

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March 23, 2016

This tutorial shows how to set up a high-availability storage with two storage servers (Debian Jessie) that uses GlusterFS. Each storage server will be a mirror of the other storage server, and files will be replicated automatically across both storage nodes. The client system (Debian 8 as well) will be able to access the storage as if it was a local filesystem.

A Quick Look at the 2016 Ethernet Roadmap

By

insideHPC

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March 23, 2016

map-1024x830 Today the Ethernet Alliance unveiled its 2016 Ethernet Roadmap at OFC 2016. The roadmap highlights Ethernetâ€™s breadth of speeds, current and next-generation modules and interfaces, PoE, and innovations like the OIFâ€™s FlexEthernet, and offers an overview of existing and future modules including QSFP-DD, microQSFP, and OBO; interfaces; and nomenclature at speeds from 10 Mb/s to 400GbE.

The roadmap also addresses Ethernetâ€™s rapidly diversifying markets, including consumer, residential, enterprise, data centers, and service providers, and the expanding roster of applications like PoE, Power over Data Line (PoDL), and automotive.

5 Informative Books About Free – Open Source Software

By

Steve Emms

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March 23, 2016

This is a fairly eclectic selection of interesting books about free and/or open source software. It does not seek to identify the finest books in each area explored. Instead it is a personal roundup of books that piqued my interest this month. They each provide very useful or interesting information.

<A HREF=”http://www.linuxlinks.com/article/2016032312020320/Books.html“>Roundup</A>

Enterprise Revenues Power Red Hat Past $2bn Barrier

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The Register

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March 23, 2016

Red Hat is in the enviable position of having become the first open-source firm to break the $2bn revenue barrier. The Linux spinner has reported full-year revenue $2.05bn, an increase of 14 percent from subscriptions, training and services. Net income was up 10 percent to $199m.

For its fourth quarter Red Hat reported $543m in revenue – growing 17 percent year on year – with net income of $53m, up 11 percent on 2015.

A Guide for Running Multiple Controllers in Software-Defined Networks

By

The Linux Foundation

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March 23, 2016

In this article, we will take a birdâ€™s eye view on multiple controller scenarios for software-defined networks (SDNs). In this article, when we discuss the multi-controller scenarios, we will not restrict to those controllers that use standard protocols such as OpenFlow. Instead, weâ€™ll use the broader meaning of the term â€œcontrollers.â€

I would like to highlight that, with the growth of NFV, the multiple-SDN-controllersâ€™ use-cases/scenarios are taking a lot of importance, mainly due to the inherent nature of the NFV-based services. NFV-based service realization may require orchestration of management of heterogeneous resources and at multiple geographical locations and involve multiple administrative domains.

The SDN Controller cluster can be seen as a system that manages a large-scale network, handling control plane communications, consisting of a large number of network elements. Typically, such systems consist of multiple controllers and expose themselves as a single logical entity.

Co-Design Architecture: Emergence of New Co-Processors

By

insideHPC

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March 23, 2016

“High performance computing has begun scaling beyond Petaflop performance towards the Exaflop mark. One of the major concerns throughout the development toward such performance capability is scalability – at the component level, system level, middleware and the application level. A Co-Design approach between the development of the software libraries and the underlying hardware can help to overcome those scalability issues and to enable a more efficient design approach towards the Exascale goal.”

In this video from the 2016 HPC Advisory Council Switzerland Conference, Dror Goldenberg from Mellanox presents: Co-design Architecture – Emergence of New Co-Processors.

KDE Plasma 5.6 Desktop Environment Officially Released, Here’s What’s New

By

Softpedia

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March 23, 2016

kde-plasma-5-6 The KDE Project has had the great pleasure of announcing the release and general availability of the major KDE Plasma 5.6 desktop environment for GNU/Linux operating systems.

Early adopters have been able to test the Beta of KDE Plasma 5.6 since the beginning of the month, but now the acclaimed and highly anticipated desktop environment has been promoted to the stable channel and declared ready for deployment in production environments.

“Today KDE releases a feature-packed new version of its desktop user interface, Plasma 5.6,” reads the announcement. “This release of Plasma brings many improvements to the task manager, KRunner, activities, and Wayland support as well as a much more refined look and feel.”

Google Builds List of Untrusted Digital Certificate Suppliers

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ZDNet

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March 23, 2016

Hoping to improve trust on the web, Google has a new tool to keep track of untrusted Certificate Authorities. Google’s has bolstered its toolset for keeping tabs on digital certificate suppliers that go rogue.

That toolset, a Google-designed digital certificate logging system known as Certificate Transparency (CT), can help protect Chrome users from the kind of mis-issued Secure Sockets Layer (SSL) certificates that Symantec generated last year for some Google domains.

Until now Google has had logs for CAs that are currently trusted by browsers, however it hasn’t had a log for untrusted root CAs. These include CAs whose trust has been revoked from root programs, and new CAs in the process of being granted trust.

Pear OS Linux Clone Gets a Brand-New Look, More Similar to the Mac OS X One – Screenshot Tour

By

Softpedia

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March 23, 2016

pear-os-linux-clone PearOS 9.3 is now available for download. Remember Pear OS? Of course you do, is the popular GNU/Linux distribution that looked very much like a Mac OS X operating system, but unfortunately, it was acquired by a big company whose name we don’t know even to this day.

Last year we reported on the fact that Portuguese developer Rodrigo Marques has created a clone of the Pear OS Linux operating system and publish it on the well-known SourceForge project hosting website under the name PearOS.

Annoyed Developer Brings Down Thousands of JavaScript & Node.js Projects

By

Softpedia

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March 23, 2016

Copyright dispute goes sour, disaster follows for JS devs. For the past day, JavaScript developers have been scrambling left and right to fix an issue that was crashing builds and affecting thousands of projects, if not even more.

Yesterday’s issue that had JavaScript developers up in arms was related to a small npm module called left-pad. This tiny JavaScript library has only 17 lines of code, which are responsible for padding strings to their left with zeros or spaces. For an unknown reason, this module was unpublished yesterday, blocking automatic builds of thousands of projects and sending developers in fervorous debug sessions.