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TConventional wisdom says you can’t run a database in a container because “Containers are stateless!” or “Databases are pointless without state!” However, this is not true any longer with Kubernetes 1.5, which includes the new StatefulSet API object (in older versions, StatefulSet was known as PetSet). With StatefulSets, Kubernetes makes it easier to run stateful workloads such as Couchbase Server, a NoSQL database.

A round up of news for weekend reading.

News briefs for April 27, 2018.

This week in Linux and open source headlines, Mark Hinkle of Node.js Foundation shares what he's excited for in regards to the platform this year and more. Read on and stay open-source-informed!

Dave wraps up the shell-script L33t generator: Last time, I talked about what's known informally as l33t-speak, a series of letter and letter-pair substitutions that marks the jargon of the hacker elite (or some subset of hacker elite, because I'm pretty sure that real computer security experts don't need to substitute vowels with digits to sound cool and hip).

In this edition of our open source news roundup, we take a look three governments turning to open source, open sourcing driverless car safety practices, a school district developing an open source curriculum, and more.

Real-Time Linux (RT Linux) has been a staple at Embedded Linux Conferences for years... as RT prepares to be fully integrated into the mainline kernel, a wider circle of developers should pay attention. In particular, Linux device driver authors will need to ensure that their drivers play nice with RT-enabled kernels.

Once upon a time the idea of upgrading the Linux kernel sent fear through the hearts of many a user. Back then, the process of upgrading the kernel involved a lot of steps and even more time. Now, installing a new kernel can be easily handled...

In my day job, I spend a lot of time wrangling data from various sources into human-readable information. While a lot of the time this just takes the form of a spreadsheet or some type of chart or other data visualization, there are other times when it makes sense to present the data instead in a written format. But a pet peeve of mine is copying and pasting. If you’re moving data from its source to a standardized template, you shouldn’t be copying and pasting either. It’s error-prone, and honestly, it’s not a good use of your time. read more

MongoDB is a NoSQL database that offers a high performance, high availability, and automatic scaling enterprise database. Data is stored in a "document" structure in JSON format (in MongoDB called BSON). MongoDB was first introduced in 2009 and is currently developed by the company MongoDB Inc. This tutorial shows the installation and configuration of MongoDB on Ubuntu 18.04 LTS.

Fedora now features a curated set of third-party software repositories, containing software not traditionally available Fedora, like Google Chrome and Steam. By default, Fedora only includes free and open source software. However, with the introduction of these curated third-party repositories, users can opt-in to enabling selected extra sources. Some software in these optional sources is […]

A big problem with supervised machine learning is the need for huge amounts of labeled data. It's a big problem especially if you don't have the labeled data—and even in a world awash with big data, most of us don't.

In a recent Opensource.com article, Lewis Cowles introduced the find command. find is one of the more powerful and flexible command-line programs in the daily toolbox, so it's worth spending a little more time on it. At a minimum, find takes a path to find things.

Depending on who you ask, serverless is either the same thing as, or conceptually related to, Function-as-a-service.

News briefs for April 26, 2018.

Ubuntu will still live on as a desktop operating system, but that's not where Canonical sees it as having its greatest potential. Even in 2018, if you ask most people what they know about Ubuntu, they'll tell you it's a desktop Linux. Oh, but there's so, so much more to Canonical's Ubuntu than that, and in its latest long-term support (LTS) release, Ubuntu 18.04 LTS, that really shows up.

Kontron’s “COMe-bCL6” COM Express Basic Type 6 module features Intel’s 8th Gen Core and Xeon CPUs with 4x SATA III, 4x USB 3.1, 8x PCIe, and options including a 1TB NVMe SSD, -40 to 85°C, and up to 64GB DDR4. Kontron has unveiled its first product based on Intel’s 8th Gen “Coffee Lake” processors. The […]

Ruby on Rails is a useful framework for quickly building line-of-business applications. But as our applications grow, we face scaling challenges. There are a variety of tools we can use—but adding different technologies to our applications increases complexity. This article explores how to use the Redis in-memory data structure store as a multi-purpose tool to solve different problems. read more

R is the de facto statistical package in the Open Source world. It's also quickly becoming the default data-analysis tool in many scientific disciplines. In this article, I look at one of the available GUIs: RStudio. RStudio is a commercial program, with a free community version, available for Linux...

Kata Containers is a new open source project licensed under Apache 2.0 and governed by the OpenStack Foundation that combines the speed of containers with the security of virtual machines. Kata Containers will be featured in a number of upcoming sessions at OpenStack Summit and KubeCon EU. Can't make it to either of those events? We've brought you answers to three of the top questions we hear from users. read more