Upgrade an Unmaintained Version of Univention Corporate Server

Problem You’re using an outdated version of Univention Corporate Server. The version you use is not maintained anymore. A simple try to update your instance will lead to errors like this: It will tell you that the unmainted repos cannot be verified anymore. But you might see more errors along the road. Solution There are … Read more

Use Google Photos’ Unlimited Free Storage for (Multiple) Devices That Are No Pixel Phones and for a Longer Timespan Than the Typical Pixel Phone Life Expectancy

This guide was created as part of my search for a durable and secure solution to store my photos and videos. The solution described below is an interim solution to give me more time to find a solution that is even more suitable for me. For more background information read the post mentioned above. Problem … Read more

My Way to Find a Reliable Solution to Store All My Important Photos and Videos

Oh man, what an annoying perpetual topic. Backing up your own photos… MEGA IMPORTANT and at the same time a MEGA SENSITIVE topic… If you’re like me and have already accumulated a few years with all kinds of memories in the form of photos, then you probably know the following evolution: Stage 1: In the … Read more

Running VirtualBox and Hyper-V Technology Together on the Same Windows Host Demonstrated by the Example of Proxmox With Child VMs in VirtualBox

Problem Let’s break down the stated problem from the general part to the more specific aspects. The general problem is having Hyper-V features enabled on a Windows host (because you want to use Docker for Windows or in my case WSL2) while also running virtualization using VirtualBox on the exact same machine. Without wanting to … Read more

Proxmox – Change and Apply Network Interface Configuration via Command Line Interface

Problem When you need to change the network configuration of your Proxmox hosts you probably want to do that via the web interface. Most of the times. But then there are situations when you need to make changes directly to the /etc/network/interfaces file for example. Like when you need to add post-up iptable commands. Then … Read more