Videos

Build walkthroughs and troubleshooting sessions recorded end to end.

Proxmox Ceph Cluster: Full Build Walkthrough

Building a five-node Proxmox cluster with Ceph from bare metal, including the network separation and OSD layout decisions explained as they are made.

Database

Working through real EXPLAIN ANALYZE output: where to look first, what the numbers mean, and how to tell a planner problem from an indexing problem.

Networking

Anatomy of the route leaks that made the news, and the specific filter configuration that would have prevented each one.

Linux

Taking a service from an exposure score of 9.4 to 1.8, live, and debugging the seccomp denial that appears halfway through.