Remove every hardcoded reference to k8s-node1 that pinned GPU
scheduling to a specific host:
- GPU workload nodeSelectors: gpu=true -> nvidia.com/gpu.present=true
(frigate, immich, whisper, piper, ytdlp, ebook2audiobook, audiblez,
audiblez-web, nvidia-exporter, gpu-pod-exporter). The NFD label is
auto-applied by gpu-feature-discovery on any node carrying an
NVIDIA PCI device, so the selector follows the card.
- null_resource.gpu_node_config: rewrite to enumerate NFD-labeled
nodes (feature.node.kubernetes.io/pci-10de.present=true) and taint
each with nvidia.com/gpu=true:PreferNoSchedule. Drop the manual
'kubectl label gpu=true' since NFD handles labeling.
- MySQL anti-affinity: kubernetes.io/hostname NotIn [k8s-node1] ->
nvidia.com/gpu.present NotIn [true]. Same intent (keep MySQL off
the GPU node) but portable when the card relocates.
Net effect: moving the GPU card between nodes no longer requires any
Terraform edit. Verified no-op for current scheduling — both old and
new labels resolve to node1 today.
Docs updated to match: AGENTS.md, compute.md, overview.md,
proxmox-inventory.md, k8s-portal agent-guidance string.
