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spinifex/scripts/images/eks-node/manifest.conf
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Josh Siviour f14fb64562 feat(eks): unify eks-server + eks-agent into one eks-node AMI (#288)
* feat(eks): unify eks-server + eks-agent into one eks-node AMI

Collapse the two K3s AMIs into a single spinifex-eks-node image whose role
(server vs agent) is chosen per-instance at first boot, halving build time,
storage, and CVE-rotation surface.

- scripts/images/eks-node/: superset manifest + merged setup.sh; all role
  services baked but only crond + the new eks-node-role selector enabled.
- eks-node-role first-boot selector reads SPINIFEX_K3S_ROLE, rc-update adds +
  starts the matching services (server: k3s + eks-token-webhook + k3s-first-boot
  publisher; agent: k3s-agent), records /etc/spinifex-eks/role, self-disables.
  Paths are env-overridable; eks-node-role_test.sh covers all five cases.
- mulga-eks-etcd-snapshot.sh early-exits on agent nodes.
- k3s_server_vm.go seeds SPINIFEX_K3S_ROLE=server into first-boot.env.
- Makefile/dev-install: build-eks-node-image / import-eks-node-image replace
  the server+agent targets.
- Delete scripts/images/eks-server + eks-agent. The launcher resolves the AMI
  by the spinifex:managed-by=eks tag, so running clusters (which hold the
  resolved AMI ID) are unaffected.

AMI bake + cluster boot are operational integration steps, not yet run.

* fix(eks): order eks-node-role after cloud-config/cloud-final

The first-boot role selector reads /etc/spinifex-eks/first-boot.env, which
cloud-init delivers via write_files in the cloud-config/cloud-final stages.
The selector only depended on net+cgroups, so on a fast boot it could start
before write_files landed and read a missing role env. Add an after-ordering
on cloud-config + cloud-final so the env file is always present first.
2026-06-04 12:28:56 +10:00

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IMAGE_NAME="eks-node"
IMAGE_DESCRIPTION="Unified EKS K3s node VM — Alpine + K3s v1.32.5+k3s1 + eks-token-webhook; role (server|agent) chosen at first boot"
DISTRO="alpine"
ALPINE_VERSION="3.21.7"
# 4G — server superset (K3s server binary + SQLite datastore working set under
# /var/lib/rancher/k3s on the root disk). Agents use the same image; the ~10MB
# of unused server binary + webhook is dwarfed by the headroom for node images.
IMAGE_SIZE="4G"
# Server superset of both package sets (etcd-ctl is ~5MB, not worth branching).
# K3s pulls cgroups + iptables; nats-cli used by k3s-first-boot publisher +
# state-report; jq builds the bootstrap-message JSON envelopes; etcd-client
# used by the snapshot script (server role only).
APK_PACKAGES="ca-certificates curl jq iptables ip6tables conntrack-tools cgroup-tools etcd-ctl openrc"
# eks-token-webhook binary always installed (agents never start it). The k3s
# binary is downloaded + SHA256-verified by setup.sh (network in chroot).
BUILD_COMMANDS="CGO_ENABLED=0 go build -o bin/eks-token-webhook ./cmd/eks-token-webhook"
INSTALL_BINARIES="bin/eks-token-webhook:/usr/local/bin/eks-token-webhook"
# All role services ship; none but the selector are enabled at bake time.
# eks-node-role picks server vs agent at first boot and enables the rest.
INSTALL_FILES="\
scripts/images/eks-node/eks-node-role.initd:/etc/init.d/eks-node-role \
scripts/images/eks-node/eks-node-role.sh:/usr/local/sbin/eks-node-role \
scripts/images/eks-node/k3s.initd:/etc/init.d/k3s \
scripts/images/eks-node/k3s-agent.initd:/etc/init.d/k3s-agent \
scripts/images/eks-node/eks-token-webhook.initd:/etc/init.d/eks-token-webhook \
scripts/images/eks-node/k3s-first-boot.initd:/etc/init.d/k3s-first-boot \
scripts/images/eks-node/k3s-first-boot.sh:/usr/local/sbin/k3s-first-boot \
scripts/images/eks-node/mulga-eks-state-report.sh:/etc/periodic/15min/mulga-eks-state-report \
scripts/images/eks-node/mulga-eks-etcd-snapshot.sh:/etc/periodic/daily/mulga-eks-etcd-snapshot"
# Only crond (state-report) + the role selector at bake. The selector adds the
# role-specific services (k3s/eks-token-webhook/k3s-first-boot or k3s-agent) to
# the default runlevel on first boot.
ENABLE_SERVICES="crond eks-node-role"
SETUP_SCRIPT="scripts/images/eks-node/setup.sh"
AMI_NAME="spinifex-eks-node"
SYSTEM_TAG="spinifex:managed-by=eks"