Why Disconnected OpenShift

Not every customer environment gets to talk to the internet. Highly regulated industries, air-gapped data centers, or simply a customer’s security policy can mean that an OpenShift cluster has to be built and operated without any direct internet connectivity at all.

OpenShift is designed to perform many automatic functions that depend on an internet connection, such as retrieving release images from a registry or retrieving update paths and recommendations for the cluster. Without a direct internet connection, you must perform additional setup and configuration for your cluster to maintain full functionality in the disconnected environment.

I'm looking back on my first year at Red Hat. I feel genuinely grateful to be part of something that’s not only big in scale, but truly meaningful in impact. Red Hat isn’t just “another tech company” to me! It’s a place where open source, community, and collaboration aren’t slogans on a slide deck, but the way we actually work every day.

Avi Portal - Bad Service

Oh my! I wasn’t expecting a three-part series as an outcome of my recent homelab crash, but here we are 😄 Check out my recent posts Database Resurrection - Reviving vPostgres DB on VMware vCenter Server and Fixing vCenter Postgres Archiver Service - Dead Postgres Replication Slot on my made experiences with recovering the vCenter Server database.

Actually, I thought I was “out of the woods” with fixiing the broken but unfortunately my Avi Controller was also affected from the outage.

Of course I run Backups 🤥

This time I had luck with the outcome of my recent homelab crash. If I weren’t able to fix my broken vCenter Server, as described in my previous article, I would have had to reinstall my vSphere (+ vSAN, + Tanzu) environment basically from scratch again.

Is this actually true?

Actually NO! Because if I would have configured my vSphere environment correctly, vCenter Server file-based backup were configured properly and I wouldn’t have had to worry about the consequences in the end.

Power Failure causes Problems again

Once in a while power failures happen and can (mostly will!) cause troubles for small homelabs like mine. I’m running a two-node vSAN cluster on two Supermicro SYS-E200-8D servers. My vSAN Witness Appliance is running on a small Intel NUC, which is perfectly suited for this use case. The vCenter Server is still running on the vSAN cluster but only compute-wise. I have a Synology NAS running as well which is providing an additional NFS datastore in order to have at least the VCSA (VM) storage outsourced from the cluster.

Knative 💙

In the rapidly evolving landscape of modern software architecture, event-driven systems have emerged as a pivotal paradigm, empowering organizations to create highly responsive, scalable, and adaptable applications. Knative stands at the forefront of this revolution, offering a robust and flexible framework for building event-driven architectures (EDA) that seamlessly integrate diverse components, enhance automation, and enable real-time data processing.

I’m evangelizing and supporting the Knative project for a longer time already. I recently had the pleasure to demonstrate parts of its comprehensive feature set at the great ContainerDays event in beautiful Hamburg, Germany.