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spinifex/scripts/images/eks-node/eks-node-role.initd
T
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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#!/sbin/openrc-run
# eks-node-role — one-shot first-boot service that selects the node's role
# (server vs agent) from the cloud-init env and enables + starts the matching
# K3s services. The unified eks-node AMI bakes every role's services but leaves
# them out of the default runlevel; this selector adds the correct ones and then
# removes itself so it runs exactly once.
description="EKS node role selector (server vs agent)"
# Backgrounded: the selector calls `rc-service k3s start`, which blocks on k3s'
# start-stop-daemon --wait window; backgrounding keeps it off the runlevel's
# critical path. command_background is also required for output_log/error_log.
command="/usr/local/sbin/eks-node-role"
command_background="yes"
pidfile="/run/eks-node-role.pid"
# Route to the serial console so the role decision + any failure is visible in
# the orchestrator's host-side console capture — the VM has no operator login.
output_log="/dev/console"
error_log="/dev/console"
depend() {
# Needs the same substrate the role services do, since it starts them.
need net cgroups
# cloud-init write_files delivers /etc/spinifex-eks/first-boot.env (the role
# source) in the cloud-config/cloud-final stages. Order after them so the
# selector never races ahead and reads a missing env file on a fast boot.
after firewall cloud-config cloud-final
}