System & Network Admin

In this tutorial, we feature some of the most commonly used kubectl commands for managing a Kubernetes (K8S) cluster in Linux.

Internet Systems Consortium's GitLab

Stork is a dashboard for BIND 9 and Kea DHCP. It is under active development, with monthly releases. The initial priority is to provide monitoring and troubleshooting support....

Never is a project started from 'just' the init. You have to take care of packages you use, CI tools...

I keep getting questions about how to start with Nix. I believe the way to go in 2022 is to start with Flakes, so in this post I'll describe just that. If you want to learn Nix from first principles instead, I recommend Nix Pills and nix.dev.

So I’m watching the excellent video Jake Hamilton "NixOS Flake tour" because I don't really...

So I’m watching the excellent video Jake Hamilton "NixOS Flake tour" because I don't really...

For a while now I’ve been wondering about Nix Flakes, what they are and how they are going to change how we use Nix.

In the video below, we show you how to install and configure the Kea DHCP server in Ubuntu or Debian

The switch from Puppeteer to Playwright is easy. But is it worth it? And how exactly does one migrate existing scripts from one tool to another? What are the required code-level changes, and what new features and approaches does the switch enable?

Cross-browser end-to-end testing for modern web apps

Build status

A reliable and easy-to-use email newsletter tool. Keila is an Open Source alternative to Mailchimp that you can host yourself.

Only available for MacOS, WhaleDeck connects to your Linux servers hosting Docker containers and simplifies a number of tasks associated with container management.

An open-source universal messaging library

(Which destination has to be used?) Wildcard Certificate with letsencrypt I have my own DNS, so I need to set it up myself to get letsencrypt to work as expected and generate a wildcard certificate for my websites. They decided to test the DNS because that way they know you are in control of the domain and its sub-domains (only the owner  of a

I have some SMTP servers (and others) which live behind the NAT and it is infeasible to configure DNAT for HTTP or reverse proxies for them. This means, HTTP-01 and TLS-ALPN-01 are unavailable, so ...

This guide will cover the process of installing mkpasswd to generate encrypted password hashes or password-based encryption keys in Linux.

Documentation and guides from the team at Fly.io.

The find command provides a handy “-perm” flag which enables users to find all the files that match the provided file permissions.

Have you ever tried to download videos from YouTube? I mean manually without relying on software like youtube-dl, yt-dlp or one of “these” websites. It’s much more complicated than you might think.