The stack, top down
Five layers, each isolated enough to swap without dragging the rest with it. Apps run on the platform; the platform runs on the cluster; the cluster runs on the foundation; the foundation runs on the fabric; the fabric runs on the hardware.
Apps
What runs on the platform — media, productivity, devops, monitoring.
Platform
In-cluster controllers — CNI, ingress, storage, secrets, observability.
Components
Reusable Kustomize components and shared cluster-level resources.
Foundation
Compute hosts, cluster OS, GitOps, and the IaC that holds it together.
Fabric
The network — three sites stitched together by a NetBird mesh.
Hardware
Physical compute and storage — NUCs, NAS, encrypted cold drives.