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spinifex/scripts/images/eks-node
Josh Siviour a22bc2f716 feat(eks): 6d nodegroup provisioning + NATS-gated cluster health (#300)
* feat(eks): nodegroup provisioning + K3s agent join (6d)

CreateNodegroup launches N customer-owned worker EC2 from the unified
eks-node AMI in agent role; each joins the cluster via K3S_URL + K3S_TOKEN
baked into cloud-init (first-boot.env SPINIFEX_K3S_ROLE=agent + agent.env).
Workers are customer-owned and DescribeInstances-visible (no ManagedBy,
no mgmt NIC) via the normal RunInstances path, matching real EKS.

K3S_URL targets the control-plane ENI's in-VPC private IP on :6443 — the
cluster NLB DNS endpoint is not resolvable in-VPC yet; switch to the NLB
endpoint on :443 once authoritative in-VPC DNS lands. K3S_TOKEN is the
decrypted cluster node-token persisted at server bootstrap.

Describe/List/Update(scaling)/Delete round out CRUD. Cluster<->nodegroup
SG ingress rules (apiserver 6443, flannel VXLAN 8472/udp, kubelet 10250,
intra-nodegroup) authorized idempotently. UpdateNodegroupVersion deferred.

* feat: gate EKS cluster health via NATS state reports

The K3s apiserver binds the VPC node-ip, unreachable from the host-side
spinifex daemon, so the reconciler cannot probe /healthz directly. Add a
control-plane state reporter that publishes {healthz, node_count} over the
management NATS bus the daemon already shares.

- eks-node server role runs mulga-eks-state-report as an OpenRC service,
  publishing eks.state.{account}.{cluster}.server every 30s.
- ClusterReconciler subscribes to that subject, gates CREATING -> ACTIVE on
  a healthy report, and records Ready node_count into ClusterMeta.
- node_count counts Ready nodes only; k3s retains terminated workers as
  NotReady until pruned, so a raw count never drops on scale-down.
2026-06-06 00:52:18 +10:00
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