node/.github/arc/README.md

Native Build Infrastructure

Cluster Ownership (NO MIXING)

Cluster	Org	Purpose
lux-k8s	luxfi	Lux blockchain infrastructure + CI runners
hanzo-k8s	hanzoai	Hanzo AI services + CI runners

lux-k8s ARC Setup

lux-k8s (do-sfo3-lux-k8s)
├── arc-system/                        (ARC v0.13.1 controller)
│   └── lux-build listener             (luxfi org)
└── lux-runners-amd64/                 (1-4 auto-scaling nodes)
    └── g-8vcpu-32gb nodes             (dedicated CI, NoSchedule taint)
        └── Ephemeral runner pods      (Docker-in-Docker, 8 CPU / 28Gi)

Platform Matrix — All Native

Platform	Runner	Type
Linux amd64	lux-build	Self-hosted on lux-k8s (8 CPU, 32Gi)
Linux arm64	ubuntu-24.04-arm	GitHub-hosted native Ampere
macOS arm64	macos-latest	GitHub-hosted native Apple Silicon
Windows x64	windows-latest	GitHub-hosted native

Note: DOKS sfo3 has no real ARM64 nodes (g6_5 is premium AMD64, not Ampere). Native arm64 builds use GitHub's Arm runners instead.

Helm Releases (lux-k8s arc-system)

Release	Chart	Purpose
arc	gha-runner-scale-set-controller	ARC controller
lux-build	gha-runner-scale-set	amd64 runners for luxfi

Values

• values-amd64.yaml — lux-build runner config (checked into repo)