Netdata is an open source monitoring tool for Linux servers. In this tutorial, I will show you how to monitor Nginx using Netdata. The tutorial will cover the Nginx web server installation, enable the 'stub_status' module in Nginx and the Netdata installation on Ubuntu 16.04 Xenial Xerus.

A sharded cluster is a set of Replica Sets (shards) whose function is to evenly distribute the workload, in such a way that allows us to scale our applications horizontally in order to work with large amounts of data. MongoDB uses shielding support for deployments with very large data sets

In this week's Top 5, we highlight sysadmin, graph databases, and more. Top 5 articles of the week 5. Neo4j and graph databases: Getting started read more

Bug bounty program that provides cash rewards for security researchers that responsibly disclose open-source code vulnerabilities, gets new money from Facebook, the Ford Foundation and GitHub.

Fedora aims to provide a kernel with as many configuration options enabled as possible. Sometimes users may want to change those options for testing or for a feature Fedora doesn’t support. This is a brief guide to how kernel configurations... Continue Reading →

Don't allow low end users to gain sudo (stand for superuser do) access which leads to damage the system.

Gravitation is a game that truly keeps the spirit of being a game. There is no fancy heavy graphical artwork, only bitmaps though not entirely! Jason Rohrer authored the whole game including the audio effects! This game particularly suits those melancholy ones and likely revolves around the life of the author.

I'm a cord cutter—one of the many people who have canceled their expensive cable channel subscription and switched to cheaper, legal, alternative methods to get their TV entertainment. Just a few hours after I returned my cable set-top box, it became clear I had a gap to fill. The clock that was part of my cable box, sitting underneath my TV, was gone, and I never realized how much I used it until now! read more

Varnish is a web application accelerator. It redirects the visitors to static pages whenever it is possible. Varnish can be installed and configured to cache the content in front of any HTTP server and it can speed up the delivery up to 300-1000 times.

AMD's Ryzen CPUs have been out for several months now, but AMD still hasn't released any specifications or code to get temperature monitoring support for CPU sensors in Linux. Thankfully, there are fairly accurate sensors on Ryzen motherboards, and they are accessible through Linux.

Last week Red Hat introduced its new and improved version of Red Hat OpenShift Online, its platform as a service cloud offering. It comes in a free or paid version, both hosted on AWS. If my experience is any indication, however, you might have to stand in line for a while in order to take the free version for a ride.

Here at Firefox, we’re always looking for ways for users to get the most out of their web experience. Today, we’re rolling out some improvements that will set the stage for what’s to come in the Fall with Project Quantum. Together these new features help to enhance your mobile browsing experience and make a difference in how you use Firefox for iOS.

If you know anything about Linus Torvalds, you know he's the mastermind and overlord of Linux. If you know him at all well, you know he's also an enthusiastic scuba diver and author of SubSurface, a do-it-all dive log program. And, if you know him really well, you'd know, like many other developers, he loves gadgets. Now, he's starting his own gadget review site on Google+: Working Gadgets.

A 15.24 x 15.24mm “Arduino Pico” board has launched on Kickstarter with a Leonardo-compatible 16MHz ATMEGA32U4 chip and a micro-USB port. A Toronto based startup called MellBell Electronics is closing in on funding its Arduino Pico Kickstarter project. Billed as “the world’s smallest Arduino board,” the Arduino Pico measures 0.6 x 0.6 inches, or 15.24mm squared.

The top US patent court has been asked to consider an urgent appeal from a manufacturer of supercomputers that's desperate to escape an upcoming trial in the patent hotspot of East Texas.

The Eastern District of Texas has become known as a haven for the type of litigation shops sometimes derided as "patent trolls," but the district's strict discovery rules and tendency to favor jury trials has attracted operating companies seeking to enforce their patents, as well.

The development team behind the very popular Wine (Wine Is Not an Emulator) compatibility layer for running Windows apps and games on several UNIX-like operating systems, announced today the release of Wine 2.0.2.

MYIR’s 91 x 63mm, $69 “Z-turn Lite” SBC runs Linux on a Xilinx Zynq-7000 SoC, with up to 28K FPGA logic cells and single or dual Cortex-A9 CPU cores. The Z-turn Lite board joins a growing number of SBCs and COMs built around the popular Xilinx Zynq-7000 ARM/FPGA SoC family. These include MYIR’s Z-turn board […]

Since the launch of Firefox Focus for Android less than a month ago, one million users have downloaded our fast, simple privacy browser app. Thank you for all your tremendous … Read more The post Firefox Focus for Android Hits One Million Downloads! Today We’re Launching Three New User-Requested Features appeared first on The Mozilla Blog.

As an artist and technology teacher, I jumped at the opportunity to test out SparkFun's new Spectacle kit. Spectacle is based entirely around the idea that artists shouldn't need to spend years studying electronics in order to use them in their art. To aid me in my review, I enlisted the help of Sophia, one of the coolest pre-teens I know. Sophia is a young artist who makes her own costumes and works in a wide variety of other physical mediums. read more

Once you have followed the previous tutorial and have OpenStack installed using the distribution of your choice, it’s time to get some instances running. First, you’ll want to choose how you’d like to work with OpenStack:

The public part of a web or otherwise expressed, what the browser paints, is nothing more than an HTML document, where we will find tags of all kinds: imgs, links, sections, articles, headers, footers, etc … A rough way Something like:

Like all good Linux admins, you know and use SSH and SCP. Both have some differences and quirks for IPv6 networks. These quirks are in the remote addresses, so once you figure those out, you can script SSH and SCP just like you're used to, and use public key authentication.

The open organization community at Opensource.com is pleased to announce the immediate availability of its newest resource: The Open Organization Maturity Model. read more

In this tutorial, we will show you how to install and configure PostgreSQL 9.6 Master-Slave Replication on Ubuntu 16.04 server. We will use Hot standby mode, and it's a very good starting point to learn PostgreSQL in depth.

In a previous article, "Provisioning Docker with Puppet", in the December 2016 issue, I covered one of the ways you can install the Docker service onto a new system with Puppet. By contrast, this article focuses on how to manage Docker images and containers with Puppet.

Sometimes your current EC2 instance is over utilized meaning that, resources within EC2 instance such as CPU or memory are remaining at their peak all the time. In such case you need to scale up the EC2 instance. This article will quickly guide you about how to resize AWS EC2 instance (Backed by EBS volume) to match the load on the system.

Are you a new Linux user? Does your work involve shell scripting? If your answer to both these questions is yes, the tool we'll be discussing here will likely interest you. The name of the tool is dirname, and it's mostly used in situations where-in you need to strip the last component from an absolute file-name.

Wireshark, the world’s most popular network protocol analyzer, an open-source and cross-platform network tool used for troubleshooting, development, analysis, and education purposes, has been updated today to version 2.2.8.

In the prior articles in this series, we've looked at the fundamentals of graph databases and installed and started using Neo4j, a popular open source graph database. In this final article, we'll write some Perl code to do the same things as we did in the second article and point you to some other libraries for working with Neo4j in your own programming. read more

Audio formats are often easier to manage than video ones, but that doesn't mean that they don't come with their own headaches. For the most part, audio problems stem from DRM and losses in quality. While FFMPEG can't always help with DRM, it can help you to convert your files without losing quality.