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Node affinity in Kubernetes is conceptually similar to nodeSelector -- it allows us to limit which nodes our pod is eligible to be scheduled on, based on labels on the node.

Did you know that you can run a Linux command line on your iOS device? You might be asking, "why would I want to use text-based applications on my tiny iPhone?" OK, fair enough. That is a pretty reasonable question. But if you're reading Opensource.com, you probably know the answer: Linux users want to be able to use any device, and they also want to use their own customizations.

The Open Source Definition (OSD), maintained by the Open Source Initiative (OSI), is a foundational pillar of the open source movement. The OSI's view is that software validly labeled "open source" must be made available in a manner that satisfies the 10 criteria set forth in the OSD, all but one of which pertain to licensing terms.

dnsmasq is a lightweight and simple program which enables issuing DHCP addresses on your network and registering the hostname & IP address in DNS. This configuration also allows external resolution, so your whole network will be able to speak to itself and find external sites too. Learn how to provide DNS and DHCP services on your local network with dnsmasq.

The ispconfig3_roundcube plugins integrate your ISPConfig mail account settings in Roundcube. In this tutorial, I will take you through the process of installing them.

TechNexion’s rugged “EDM-G-IMX8M-PLUS” and “AXON-E-IMX8M-PLUS” modules run Linux on NXP’s 2.3 TOPS i.MX8M Plus with up to 8GB LPDDR4, 16GB eMMC, WiFi/BT, and starter kits. There are also new i.MX8M Mini and Nano EDM modules. TechNexion has posted product pages for two compute modules that feature NXP’s i.MX8M Plus. The EDM-G-IMX8M-PLUS is essentially the same […]

This week has been “a week of millions” for the Linux Foundation, with our announcement that over 1 million people have taken our free Introduction to Linux course. As part of the research for our recently published 2020 Linux Kernel History Report, the Kernel Project itself determined that it had surpassed one million code commits. […]

Aaeon’s compact, $475 “Boxer-8222AI” embedded box runs Linux on a Jetson Nano along with 4x USB 3.1 Gen2, HDMI 2.0, RS-232, M.2, mini-PCIe, 40-pin GPIO, and 2x GbE ports, one with PoE/PD. In April, Aaeon unveiled two compact systems: the Nvidia Jetson Xavier NX-based Boxer-8251AI and similar Jetson Nano based Boxer-8221AI. At the time, the […]

Raspberry Pi (RPi) has been a key enabling device for the Arm community for years, given the low price and widespread adoption. According to the RPi Foundation, over 35 million have been sold, with 44% of these sold into industry. We have always been eager to get the […]

IWave’s “Arria 10 SoC SOM” and “Arria 10 SoC FPGA” dev kit run Linux 4.9.78 on Intel’s hybrid Arm/FPGA Arria 10 GX and SX SoCs along with PCIe, GbE, 10GbE SFP+, FMC, and PMOD. Back in 2016, IWave launched an Arria 10 SoC Module featuring Intel/Altera’s Arria 10 SX SoC. Now, the company has launched […]

Kontron announced three Linux-friendly Elkhart Lake based compute modules with support for optional 2.5GbE: a COM Express Compact Type 6 “COMe-cEL6 (E2)” with up to 32GB DDR4-3200 plus a Mini Type 10 “COMe-mEL10 (E2)” and a “SMARC-sXEL (E2).” Kontron unveiled its first products based on Intel’s Elkhart Lake Atom x6000E, Pentium, and Celeron SoCs. The […]

Redis is a free, open-source in-memory key-value store that supports different kinds of data structures. You can use it as a database, cache, message broker, and queue. In this tutorial, we will explain how to install Redis on CentOS 8 server.

Fedora 33 Beta is now available for download. Read more about some of the great features coming in the next Fedora release.

In Use this Python script to simulate Babbage's Difference Engine, Python offered an alternative solution to Babbage's problem of determining the number of marbles in a two-dimensional pyramid. Babbage's Difference Engine solved this using a table showing the number of marble rows and the total number of marbles. read more

Linux on Windows is continuing to grow ever more powerful and functional. Now, graphical Linux programs are being integrated into WSL.

There are common beliefs about user experiences—the best ones are user-centered, iterative, and intuitive. When user experience (UX) research is conducted, user stories about these experiences are collected—but the research methods chosen inform user experiences, too. So, what makes for an engaging research experience, and how can methods evolve alongside products to better connect with users? read more

Advantech’s Linux-ready “SOM-2532” SMARC 2.1 module is built around Intel’s Atom-class, 10nm Elkhart Lake platform and supplies up to 16GB LPDDR4-3200, 256GB UFS 2.1, dual GbE with TSN, dual USB 3.1 Gen 2, dual CAN, and triple 4K support. Advantech is one of the early adopters of Intel’s newly announced Elkhart Lake Atom x6000E, Pentium, […]

Avalue’s rugged, 3.5-inch “ECM-EHL” runs Linux or Win 10 on an Atom x6000E and offers up to 32GB DDR4-3200, 2.5GbE and GbE, 2x USB 3.1 Gen2, triple 4K displays, and 2x M.2 slots with SIM. Avalue has posted specs for a 3.5-inch ECM-EHL SBC that runs on Intel’s new dual- or quad-core Elkhart Lake Atom […]

I just stumbled onto a new (to me) feature of the GNOME desktop that enables you to create a document template. A template is generally an empty shell of a document with certain things configured and is often referred to as boilerplate. An example might be a letterhead for a law firm, with its corporate title and address at the top. Another might be a bank or insurance carrier letter that contains certain disclaimers in the footer at the bottom of the document. read more

Traefik is an open-source HTTP reverse proxy and load balancer that helps you to deploy microservices easily. In this tutorial, we will show you how to install and configure Traefik as a reverse proxy on CentOS 8.