When you look through the 5G core network specification documents of 3GPP such as TS 23.501 and 23.502 the idea I got was that it’s pretty much the same as before. Yes, the interfaces and network components have new names but by and large the 5G core network does the same things as today’s core … Continue reading The Cloud Native 5G Core Network
Once upon a time, not so long ago, I decided to duplicate my services running on a bare metal server at home on a bare metal server I rent in a Hetzner data center. This has worked out really well. As the server offers ample capacity, I have additionally migrated quite a number of virtual … Continue reading The Hetzner Plan C
Two years ago, I migrated a lot of my services running on virtual machines in the cloud to VMs on a bare metal server, which was also running in the cloud. The main reason: A significant cost reduction while at the same time having significantly more dedicated processing power and storage available. While I put … Continue reading Macvtap is even Cooler than I Thought
While the press and pretty much everybody focuses on ChatGPT these days, there’s another project of the same company that was recently open sourced that promises to create transcripts of video and audio files. It’s called Whisper AI. As I do get audio files every now and then for which a transcript would be helpful, … Continue reading A First Test of Whisper AI
So here we go, it’s 2023 and this blog has once more moved to another host. Initially started as a blog on Typepad in 2005, it has so far moved to a hosted server platform on which I installed WordPress (2016), to a virtual machine I could administer on my own (2018), and then, two … Continue reading Moving the Blog to ANOTHER Virtual Machine
Another crazy year, both good and bad in so many ways, is coming to an end, so here I go with time honored tradition of looking back to what moved me this year in tech! In The Wireless Domain Obviously, there’s been a lot going on in the wireless domain again. While some parts of … Continue reading Things That Moved Me in 2022
Normally, I’d say that raw computing power should be in the cloud, or perhaps under my desk, but definitely not in my backpack. That’s because computing power comes at a price: The notebook gets heavier, battery life becomes shorter and the power supply that has to supply at least 120 Watts of power is a … Continue reading Running Ubuntu Linux on Bleeding Edge Hardware: Dell Notebook with an Intel 12800H and an Nvidia GPU
When I recently read this article about vulnerabilities to break out of virtual machines, I became aware again of the concept to run virtual machines inside virtual machines. This is also called nested virtualization and it seems most modern Intel and AMD CPUs support this feature. But does it really work ‘just like that and … Continue reading Nested Virtualization
Wow, this is part 10 in my series on how to get started with Kubernetes! I am obviously having a lot of fun with the topic, and it’s really nice to be able to experiment with the technology, as it is not only the basis for 5G core networks, but massively transforms all parts of … Continue reading Kubernetes Intro – Part 10 – Persistent Storage in a Managed Cluster
Yes, this is already part 6 of my ongoing Kubernetes intro series. In part 5, I have moved ever deeper into the cloud by looking at how to create managed Kubernetes clusters in Amazon’s and Linode’s clouds. Containers and Kubernetes are all about scale, so one might wake up one day with many Kubernetes clusters … Continue reading Kubernetes Intro – Part 6 – Managing All Those Clusters