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Varnish is a proxy server focused on HTTP caching. It's designed as HTTP accelerator and can act as reverse proxy for your web server Apache or Nginx. In this tutorial, I will show you how to install and configure varnish HTTP accelerator as a reverse proxy for Nginx web server.

I get asked from time to time why I enjoy programming in Perl so much. Ask me in person, and I'll wax poetic about the community of people involved in Perl—indeed, I have done so more than once here on Opensource.com already, and I make no secret of the fact that many of my closest friends are Perl mongers. read more

As a Linux system administrator, one of the basic tasks that you'll have to perform is to create accounts for new users and manage user groups. Of course, there are command line utilities that let you do this, and this tutorial, we will discuss the basics of two such commands: adduser and addgroup.

Which makes lots of sysadmins' fave tracing tool cool for Linux Oracle appears to have open-sourced DTrace, the system instrumentation tool that Sun Microsystems created in the early 2000s and which has been beloved of many-a-sysadmin ever since.…

Learning to program is hard. Even when you finally get your colons and parentheses right, there is still a big chance that the program doesn’t do what you intended. Commonly, this means you overlooked something or misunderstood a language construct,... Continue Reading →

News briefs for February 15, 2018.

Starting today, Google Chrome will begin removing ads from sites that don't follow the Better Ads Standards. For more info on how Chrome's ad filtering will work, see the Chromium blog.

Less than two weeks after demonstrating an exploit that allows Linux to be loaded unto a Nintendo Switch game console, fail0verflow is back with a new video showing what appears to be a full-fledged GNU/Linux-based operating system running on Nintendo’s tablet.

If you want to use Anaconda for science projects, one of the first things to consider is the spyder package, which is included in the basic Anaconda installation. Spyder is short for Scientific PYthon Development EnviRonment. Think of it as an IDE for scientific programming within Python.

Open source software (OSS) marketing today is unique: it’s a process of co-creating and co-executing a marketing plan with an entire community—developers, end users and vendors. This makes it distinctly different than most traditional technology marketing efforts, which generally focuses on business decision-makers exclusively.

You may be moving your mission-critical applications to a serverless architecture sooner than you think. OK, so we'll always need some servers. But with the rise of virtual machines (VM)s and container technologies such as Docker, combined with DevOps and cloud orchestration to automatically manage ever-larger numbers of server applications, serverless computing is becoming real.

When DevOps was coined by Andrew Shafer and Patrick Debois, the goal was to bring developers and operators closer to achieve customer value together. DevOps is a culture of continuous learning and improvement. While automation and tools can garner some improvements, having the right culture drives larger impacts. The sharing of knowledge and ideas resulting in cultural growth is the value creator in DevOps.

Technologic’s rugged, open-spec “TS-4100” COM/SBC hybrid runs Linux on an i.MX6 UL, and offers a microSD slot, 4GB eMMC, a micro-USB OTG port, optional WiFi/BT and baseboard, and an FPGA with a programmable ZPU core for offloading real-time tasks. Technologic Systems has begun sampling its first i.MX6 UL (UltraLite) based board, which is also its first computer-on-module that can double as a single board computer.

Data harvest notice will be checked by default. Future versions of Ubuntu desktop may collect information on the PCs running it unless users opt out.

Where do IT fundamentals fit in our modern, cloud- and abstraction-driven engineering culture? Although you can use modern Linux desktops and servers without knowing almost anything about how computers, networks or Linux itself works, unlike with other systems, Linux still will show you everything that's going on behind the scenes if you are willing to look.

Advantech is prepping a “SOM-5871” computer-on-module with an unannounced AMD V1000 Zen SoC, which appears to be AMD’s rumored, 14nm Ryzen Embedded V1000 “Great Horned Owl” successor to the R-Series. iBase also leaked info on a V1000 based Mini-ITX board and fanless PC. Advantech has posted a preliminary product page for a SOM-5871 module that […]

In this edition of our open source news roundup, we take a look at the Mozilla's IoT gateway, a new machine learning platform, Code.mil's revamp, and more. Open source news roundup for February 4-17, 2018 Mozilla announces Project Things for a more secure IoT Mozilla wants you to have control over your connected devices. To help you gain that control, they've released Project Things into the wild. read more

The Apache 2 license contains a number of key provisions including a patent grant that, in my experience, is often misunderstood. This grant has a significant effect on making open source safe to use. Let me explain by exploring a portion of Section 3 of the Apache 2.0 license.

News briefs for February 16, 2018.

This week in open source and Linux news, Google's Accelerated Mobile Pages will now support web browsing in email, an op-ed on the continued value of the open source community and more! Read this week's digest to stay in the open source know.

For several years, linux.conf.au, a week-long conference (held this year from January 22-26), has held "miniconfs" offering space for tech community niche groups to share their inventions and ideas. In 2018, 12 miniconfs were held on the first two days of the conference, and the Art + Tech miniconf took the concept to the next level with an entire day of 11 talks about making art with tech, as well as an art exhibition head during the conference. read more