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This tutorial will show you how to install and configure the latest version of Nagios Core, currently 4.3.4, from sources in Debian 9.1, codename Stretch. Nagios, also known as Nagios Core, is a free Open Source network monitoring tool actively maintained by its developers, designed to monitor an entire network infrastructure.

Nothing beats hands-on playing with IPv6 addresses to get the hang of how they work, and setting up a little test lab in KVM is as easy as falling over — and more fun. In this two-part series, we will learn about IPv6 private addressing and configuring test networks in KVM.

COPR is a collection of personal repositories for software that isn’t carried in Fedora. Some software doesn’t conform to standards that allow easy packaging. Or it may not meet other Fedora standards, despite being free and open source. COPR can offer these... Continue Reading →

A culture of transparency permeates the Dataverse project, contributing to its adoption in dozens of research institutions around the world. Headquartered at Harvard University, the Dataverse development team has more than a decade of experience operating as an open source project within an organization that values transparency: the Institute of Quantitative Social Science (IQSS). Working transparently helps the Dataverse team communicate changes to current development efforts, provides opportunities for the community to support each other, and facilitates contribution to the project. read more

I was reading about the history of The Beatles a few days ago and bumped into an interesting fact. According to the author, The Beatles used the word "love" in their songs more than 160 times. At first I thought, "cool", but the more I thought about it, the more I became skeptical about the figure. In fact, I suspect that the word "love" shows up considerably more than 160 times.

In this article series, we have been discussing the Understanding OPNFV book (see links to previous articles below). Here, we will look at OPNFV continuous testing and writing and onboarding VNFs.

Intel unveiled an “Arduino Create” toolkit for Intel-based systems running Linux. It debuts on a new Ubuntu-based “UP Squared IoT Grove Development Kit.” Intel may have killed its Curie-enabled Arduino 101 SBC when it discontinued the Curie, but now it’s working to improve Arduino connectivity on Intel based systems running Linux with its cloud-based Arduino […]

Discourse is a free and open source software for creating Internet forum community and mailing list. Discourse forum software has been used by many organizations, including Codeacademy, Udacity, Twitter Developers, and Docker Community Forum. In this tutorial, we will show you step-by-step how to install and configure Discourse Forum with Nginx web server on Ubuntu 16.04.

The Go programming language, sometimes referred to as Google's golang, is making strong gains in popularity. While languages such as Java and C continue to dominate programming, new models have emerged that are better suited to modern computing, particularly in the cloud. Go's increasing use is due, in part, to the fact that it is a lightweight, open source language suited for today's microservices architectures. read more

Editor's note: This article was originally published in June 2016, and has been updated to provide some additional options which you may wish to consider. For many students in mathematics, physical sciences, engineering, economics, and other fields with a heavy numeric component, MATLAB is their first introduction to programming or scientific computing in general. read more

Even with a shortage of IT workers, some employers are still discerning in their hiring requirements and are either seeking certified candidates or offering to pay for their employees to become certified.

I still remember when I was a beginner at OpenStack. I was at American Express and was rolling off a five-year data center migration project. I was looking for something else to get into. When I finally met with my executive leadership for a new project, I was told, "we're starting a new internal cloud using OpenStack and we'd like you to lead the architecture effort for the cloud infrastructure group." I figured I'd just Google "OpenStack" and I'd find all sorts of guides and tutorials. I thought "I'll have this built in no time." Boy was I wrong. read more

In 2015 and 2016, I awarded "Best Couple" to two open source commands or program types that, combined, make my world a better place. This year, the "Best Couple" prize has turned into the "Best Trio," because resolving the problem I set out to fix—effective server-side email sorting—took three pieces of software working together. read more

Matrix Electronica’s rugged, IoT-oriented “MTX-Router-Titan II” features up to 4G connectivity, including LTE, plus WiFi, Ethernet, USB, and serial links. Madrid-based Matrix Electronica, a subsidiary of the Flexitron Group, has released a rugged industrial router with IoT gateway features that offers a mix of wireless and wired interfaces. The MTX-Router-Titan II 4G upgrades its earlier […]

On Kickstarter: the “DevDuino” is an Atmega32U4 based Arduino clone with an OLED display, microSD and micro-USB links, and optional breadboard and WiFi. Created by French developer Alexandre Pailhoux, the DevDuino is an Arduino compatible with a U-shaped PCB that lets you add mezzanine shields on the bottom using male headers. Other standout features on […]

The Z Shell or zsh is an interactive UNIX shell and powerful command-line interpreter for scripting language including shell scripting. The Z shell has become one of the most popular shells for Linux operating system. It's rich in features and easy to configure and customize.

This is not necessarily the title you'd expect for an article, I guess,* but I'm a fan of technical debt. There are two reasons for this: a Bad Reason and a Good Reason. I'll be upfront about the Bad Reason first, then explain why even that isn't really a reason to love it. I'll then tackle the Good Reason, and you'll nod along in agreement. read more

Audacious is a simple yet advanced audio player. It focuses on audio quality and supports a spectrum of codecs including FLAC and Vorbis. Though lightweight by design, Audacious provides in-app options like choosing a sound system (PulseAudio, ALSA, JACK, etc.).... Continue Reading →

MediaWiki is a popular wiki software that was originally developed for use on Wikipedia. It's a free and open source wiki software written in the PHP programming language. In this tutorial, we will discuss how to step-by-step install MediaWiki with Nginx web server on CentOS 7.

23 vulnerabilities let rats run riot, even as kids' eyes were kept innocent A Disney-branded home internet filtering device might keep bad content out, but it was an open door to bad actors until earlier this month.…