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
When most people talk about virtual machines, they mean Linux based VMs in the cloud. But there’s much more that can be done with the technology. Before turning to the cloud, I’ve actually started using virtual machines many years ago on my Linux desktop to have access to a Windows environment to run a number … Continue reading Taming Windows in a Virtual Machine
After exploring many new technical topics over the past few months, including Docker and Kubernetes, I ventured out over the weekend to have a look at OpenStack. I wanted to have a closer look because OpenStack is used to provide a private cloud infrastructure, i.e. virtual machines (compute), storage, and networking for many projects. OpenStack … Continue reading Playing with OpenStack – A Rather Unpleasant Experience
As you might have noticed on the blog, I’ve been doing a lot of hands-on exploration these days of bare metal hardware, virtual machines, containers and orchestration (e.g. Kubernetes). My motivation behind this is twofold. For one thing, I like to evolve my private cloud. Current status: 25 containers are now running in my private … Continue reading The Three Eras Of Telecom Infrastructure Hardware
Last year I wrote about a 5G Americas whitepaper that describes how 3GPP has standardized the 5G core in a way that lends itself for cloud based implementation. In short, that means that control plane functions are split into microservices, deployed on bare metal clusters in containers and managed with Kubernetes. So far the theory. … Continue reading The Cloud Based 5GC – From Theory To Practice
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
When network operators are ready to go beyond 5G EN-DC, which basically means that a mobile device camps on a 4G cell and a 5G cell is added for additional speed, they require a 5G core network. To find out more about the 5GC, a good starting points are 3GPP TS 23.501 (System Architecture – … Continue reading The 5G Core Network (5GC) – Part 1 – Network Entities
Another year is drawing to a close and as in the years before I wondered what has happened during the year. And as always I was quite surprised when I went through my blog entries of the past 12 months about the amount. So here are my personal technology highlights of 2014: LTE and Affordable … Continue reading My Personal Technology Highlights in 2014