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Josh Siviour 6879a3425a feat(gpu): Ubuntu NVIDIA GPU node images + GPU AMI selection (Epic A) (#502)
* feat(gpu): Ubuntu NVIDIA GPU node image + GPU AMI selection

Epic A of GPU passthrough to EKS pods / ECS task containers.

- Add gpu-vendor AMI tag constants + GPUVendorForType/IsGPUTypeName helpers
  (instance-family prefix -> vendor from knownGPUModels).
- EKS + ECS worker AMI resolution branches to a GPU-tagged node image for GPU
  instance types; no fallback to the driverless image (hard error instead).
- Exclude gpu-vendor-tagged AMIs from the plain (non-GPU) lookup so a newer GPU
  AMI cannot hijack ordinary nodes (managed-by tag is shared; filters have no
  negation, so exclude client-side).
- NodegroupRecord caches GPUEnabled/GPUVendor from InstanceTypes.
- Catalog entries spinifex-eks-node-gpu / spinifex-ecs-node-gpu (dual-tagged).
- New Ubuntu 26.04 GPU node images (eks-node-gpu, ecs-agent-gpu): reuse the
  proven DKMS -server driver recipe (drop Docker CE + dev payload), add
  nvidia-container-toolkit, OpenRC->systemd port of the worker/agent service
  subset, udev EBS by-id bridge, nvidia modules-load, first-boot CDI generation.
- build-system-image.sh: SYSTEM_TAG supports multiple space-separated tags.

* build: allow SYSTEM_IMAGE_BUILD_DIR override for image build dir

Ubuntu GPU images are 16G; a RAM-backed /tmp tmpfs is too small to hold the
qcow2 + expanded raw. Default stays /tmp; SYSTEM_IMAGE_BUILD_DIR redirects the
build onto a real disk.
2026-07-10 19:52:12 +10:00

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[Unit]
Description=Spinifex ECS container-instance agent
# Resolves host identity from IMDSv2, registers + heartbeats + polls task
# assignments through the AWS gateway over TLS+SigV4 (no NATS), and pulls
# task images through containerd.
Requires=containerd.service
After=containerd.service ecs-ca-install.service network-online.target mulga-cdi-generate.service
Wants=network-online.target
[Service]
Type=simple
# Static config (gateway URL, CA, region, cluster, seeded IAM creds,
# containerd socket) comes from /etc/spinifex-ecs/agent.env, dropped by
# cloud-init at launch. Absent file is tolerated — the agent falls back to
# its built-in defaults.
EnvironmentFile=-/etc/spinifex-ecs/agent.env
ExecStart=/usr/local/bin/ecs-agent
Restart=on-failure
RestartSec=5
[Install]
WantedBy=multi-user.target