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In this tutorial, we will learn how to achieve high availability of MariaDB using Heartbeat and DRBD on Ubuntu 16.04 server. Heartbeat and DRBD both are used for a cluster solution for any application using two servers. Both servers are work in active and passive mode, one server will work at the same time and another server as a backup server.

At the tail end of 2015, the Raspberry Pi Foundation surprised the world by releasing the diminutive Raspberry Pi Zero. What's more, they gave it away for free on the cover of the MagPi magazine. I immediately rushed out and trawled around several newsagents until I found the last two copies in the area. I wasn't sure what I would use them for, but I knew their small size would allow me to do interesting projects that a full-sized Pi could not satisfy. read more

For any device connected to the internet or a network, it's essential that you log events so you know what the device is doing and can address any potential problems. Increasingly those devices include Internet of Things (IoT) devices and embedded systems. read more

Krita, one of the best free and open source cross-platform digital painting application has released it's version 4.0. It comes with many improvements and new features. Krita runs on Linux distros, Windows and MacOS. See changes in the post below.

25 years ago, in Bob Young wife's sewing room, the most successful of all Linux and open-source software companies got its start. Young and current Red Hat CEO Jim Whitehurst share their thoughts on Red Hat's journey.

Python's for loops don't work the way for loops do in other languages. In this article we're going to dive into Python's for loops to take a look at how they work under the hood and why they work the way they do. Looping gotchas We're going to start off our journey by taking a look at some "gotchas." After we've learned how looping works in Python, we'll take another look at these gotchas and explain what's going on. read more

One of the most important skills you can learn as a Linux user is how to use a manual page, or “man page.” Linux Man pages are fairly easy to tackle. This article will introduce you to those simple documents.

The final specs of the soon-to-be-unveiled Huawei P20 line-up appear to have been leaked online ahead of tomorrow's official launch, giving us a glimpse of what to expect from the Android-powered smartphones.

Managing an infrastructure of servers is a non-trivial task. When one cluster is misbehaving, logging in to multiple servers, checking each log, and using multiple filters until you find the culprit is not an efficient use of resources. read more

News briefs for March 26, 2018.

Sometimes, while working on the command line, you'll see outputs produced by commands in certain cases are so large that they don't fit into the screen area, and hence, you get to see only the last part of the output (as the initial part scrolls past the screen). Thankfully, there are utilities that are specifically designed to help you in such cases, and one of them is more.

A decade after the last SSL/TLS web encryption standard was released, the IETF has finally settled on the 28th draft of the TLS 1.3 standard to be the next major protocol for internet security. The new standard aims to provide improved security and cryptographic assurances for the internet.

Think it's complex to connect your Python program to the UNIX shell? Think again!

Last week our most popular articles covered a spectrum of fun and practical uses for technology at home and in the workplace. Here's the list of reader favorites from March 19-25.

The Linux Foundation brings technology vendors together to form new effort that aims to make it easier for different industry vertical to benefit from Artificial Intelligence.

The Linux Mint project unveiled a “MintBox Mini 2” mini-PC with Linux Mint 19 preloaded on a Compulab Fitlet2 with a quad-core Celeron J3455, up to 8GB RAM and 120GB SSD, dual GbE, wireless, and mini-DP. For years, Compulab’s mini-PCs have offered pre-loaded Linux Mint, in addition to Windows and barebones options...

Mozilla released on Monday the second point release of its latest Firefox 59 "Quantum" web browser for all supported platforms, fixing quite a bunch of issues and adding various improvements.

Canonical's Snapcraft team announced over the weekend the release of Snapcraft 2.40, an incremental update to the open-source tool used for packaging Linux apps as Snaps for Ubuntu other Snap-enabled GNU/Linux distros.

Bloated rc7 may or not be a sign of delays Linus Torvalds is pretty sure he’ll release version 4.16 of the Linux kernel next week.…

This article describes the changes to the IBM Power Architecture that can be used to provide enhanced protection of virtual machines from other software running on the same system. A new higher privilege mode called Ultravisor mode is being introduced, along with the concept of secure virtual machines (SVMs). This mode is supported by the Protected Execution Ultravisor which will be open sourced. An SVM is protected at rest, when transmitted over a network as a file, and while executing. In this article, we discuss the impact of this new architecture for SVMs. There is near-zero impact on VMs.