System & Network Admin

Everything you need to know about Prometheus Alertmanager - why it's important, how it's designed, how to configure it, why we at groundcover love Prometheus Alertmanager so much, and how it has made our lives easier.

Manage your server without fighting the terminal. Server control panel based on Docker.

No one can deny that debugging helps us a lot while solving problems. One major developer experience issue today with kubernetes is that it is hard to debug a problem. Today, we will play with a specific tool that will help us do that

How the actual build look like. TL;DR Link to heading This is not a guide on how-to install and configure Linux, but a list of the components I used to build my personal Linux workstation, to avoid any compatibility issue and to exploit the best in terms of performance and stability. For who’s asking, I am using Arch Linux as my daily driver and it is configured through the Ansible playbook i made.

Fellow DietPi enthusiasts, I have long searched for a newbie-friendly solution, but, alas, I failed miserably… Thus, I have come here to humbly seek your help in my quest to achieve this: Goals Running vaultwarden on HTTPS with a cert from letsencrypt (no more annoying warnings!) No (additional) port forwarding for a reverse proxy solution (as I am no tech guru, I prefer to keep my attack surface minimal) Current state RPi4 @ DietPi 7.2.3 The default lighttpd web server A working DDNS ...

Let’s Encrypt is a Certificate Authority providing an easy way to acquire and install free SSL/ TLS certificates, enabling encrypted http traffic on web

This guide will is on How To Generate Let's Encrypt Wildcard SSL certificate. As you may already know, Letsencrypt announced the release of ACME v2 API which

It is literally "dead simple" to automatically install and renew Proxmox SSL Certificate with LetsEncrypt, through the GUI and ACME protocol.

Learn the function and differences between some standard server configuration directories.

Did you ever want to use your own domain as a dynamic DNS for your non static IP address? Learn how to do it using a router by Ubiqiti and Cloudflare with this guide

Dynamic DNS allows external clients to connect to your UniFi gateway using a hostname rather than an IP address. This is particularly useful if your UniFi gateway uses a frequently changing  WAN IP...

Learn how to use the Let’s Encrypt client to generate RSA certificates and automatically configure NGINX to use the newly issued certificates.

Let's Encrypt is a certificate authority that provides free SSL certificates for websites. However, it not only offers SSL certificates;

Nginx is a fast and popular web server that can be used as a reverse proxy and load balancer for your servers. In this tutorial, we will show you how ...

There it is. The final instalment. Over the course of this series, we've built a very useful Rust web service that shows us colored ASCII art cats, and we've packaged it with ...

The Nix package collection (Nixpkgs) is a powerful tool to ensure the continued growth, transparency and resilience of open source software.

Introduction

Users can point and click at an array of sources to quickly glean which users have access to which data assets.

Once you install Debian to function as a server, you might notice it's missing something important--sudo. Jack Wallen walks you through the process of installing sudo and enabling it for user.

Webhooks are a bit of a wild west in the tech space, and different than REST APIs. So, how do we document them? Here are some tips.

Adventures in making stuff with Daniel Higginbotham

In case the server has sufficient RAM or doesn't require the use of a swap or the swapping decreases system performance, you should consider disabling the swap.

Psensor is a GTK+-based application software that is used to monitor hardware temperature and plot Real-Time graphs from the obtained data for quick review.

This article provides a few command-line tips on how you can delete a large directory that contains thousands of files in a Linux system.

OTEL tracing can collect detailed data on request execution and provide visibility into the entire system. By catching performance issues early on, it can improve the user experience and reduce the risk of application failures.

iperf3 is a free open source, cross-platform command line based program for performing real time network throughput measurements between servers in Linux.