System & Network Admin

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.

Nix Flakes: an Introduction - Xe's Blog

Important Update 2020.05.24 After upgrading to 20.03 version of NixOS, the docker container starts to use the container’s actual name instead of its systemd service’s name to address the container. This means that to specify the database container from the filerun web server’s container, you need to change the value of FR_DB_HOST from docker-filerun-mariadb.service to filerun-mariadb. The Problem One of the biggest convenience you have in NixOS is that many of the services you want to run are already coded as a “service”.

Nix Flakes: Packages and How to Use Them - Xe's Blog

Feel free to read this on my blog! Why Nix Getting a dev environment setup with rust is...

In this guide, we will cover the process of installing and using Timeshift on Debian 12. It allows you to create and restore system snapshots effortlessly.

Streamline your development workflow with DevTunnel, a tool that bridges the gap between your local environment and remote resources.

Move Google Cloud Spanner backups between projects for seamless synchronization. Secure your data effortlessly!

btop shows all information you need. May it be CPU usage, free disk space, running processes, temperature, …

Simple declarative personal Kubernetes cluster

My quest to throw Nix at every piece of hardware I own continues apace

How To Save Traffic With Apache2s mod_deflate. In this tutorial I will describe how to install and configure mod_deflate on an Apache2 web server. mo...

IT Consultancy specializing in DevOps, Cloud Infrastructure & Software Development

While AWS ECS and EKS serve a similar purpose, they have several fundamental differences. Here's what you should know.

Improvements in acme.sh integration allows you to manage TLS certificates with Let’s Encrypt without restarting HAProxy.

Mezmo is a cloud-based telemetry data pipeline that enables application owners to enrich, control, and correlate critical business data across domains.