System & Network Admin

I’ve had a Raspberry Pi 4B sitting in my cabinet for a few months now. I dusted it off and realized that the SD card was busted. Got a replacement 64GB U3 A2 card and got it up and running with Ubuntu server. The primary intended use was to run docker with DB containers that I use for my side projects such as Postgres/MySQL/MongoDB. My current home network consists of several routers for WiFi reachability.

Pi-hole is a DNS-level ad and tracker blocker that works on all of your devices with no additional changes.

Adventures into IPv6, and getting it all working on a UniFI UDM

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I recently bought a UniFi Dream Machine Pro to replace the Cisco router used for my home internet (and inter-VLAN routing) function. I’ve really enjoyed using the UniFi wireless and switching…

While developing a logrotate configuration for the Ghost CMS system, I learned some things about the behavior of logrotate that I wanted to make note of: 1) Creating a new log file with the create directive is often unnecessary I didn't need to create a new logfile with create 644

Get Visual Studio Code up and running on Linux.

Peer-to-Peer Video Sharing, in the Truest Sense.

Make your DNS requests more private and secure

Development teams should shift detection of performance regressions as far left as possible. Here’s how with continuous benchmarking tool Bencher.

Nostr is a new and innovative approach to social media networking. Learn how it works and how you can install it in Linux today.

Here's a list of open-source mail servers that you can use to send/receive emails and store mail.

A pattern I really like for zero-downtime deploys is the ability to "pause" HTTP traffic at the load balancer, such that incoming requests from browsers appear to take a few extra seconds to return, but under the hood they've actually been held in a queue while a backend server is swapped out or upgraded in some way.

In this easy-to-follow guide, we will discuss how to create a file in Linux from the command line using echo, touch, tee, cat, and redirection operators.

In this post I’m going to show you how to build a multi-region Node.js Lambda API using Serverless Framework and

Automate your infrastructure, security & compliance.

In this topic, we will first look at what an IP address is, the differences between Ipv4 and IPv6 and configure IPV4 and IPv6 addresses on a Linux system.

If IPv6 is much better than IPv4, why hasn’t adoption been more widespread (as of March 2023, Google estimates that its IPv6 traffic is about 39-43%).

The newly released Debian 12 offers numerous benefits, including updated software packages, enhanced security, improved hardware support, and new features.

This step-by-step guide shows you how to safely upgrade to Debian 12 "Bookworm" from Debian 11 "Bullseye" to enjoy the latest features!

Today I’m going to show you how to automatically mount a drive at boot time in Linux. My laptop has one SSD and one mechanical drive. I install operating systems on SSD and store files on the mechanical drive. So oftentimes I need to mount the mechanical drive in the file manager manually to access…

Dolphin is the default file manager of the KDE Plasma Desktop Environment. It is considered as one of the most comprehensive and feature-rich file managers available for Linux distributions. Yes. It has tons of features and you may not be aware of all of them. One such feature is file

Find all keyboard shortcuts and tips and more about technology on DefKey.com!

A Encryption Lightbulb Moment

Kind is one of the easiest ways of starting out with Kubernetes development, especially if you're just beginning your work with containers.

We have a two tier setup. We have a primary repository (called 'primary' below). And a secondary repository (called 'secondary' below) that was created like so: $ git clone --bare --shared $REPO_A/