Files
kea-operator/config/samples/00-cluster.yaml
T
unkinben d3fb5dcd1a
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Scaffold kea-operator: CRDs, controllers, config rendering, REST API, CI
Replace the ISC dhcpd PXE-boot VM with a Kea DHCP Kubernetes operator, modelled
on bind-operator. The operator renders kea-dhcp4 config from CRs and runs an HA
pair of kea-dhcp4 + kea-ctrl-agent servers behind an anycast Service.

- add KeaCluster/KeaSubnet/KeaClientClass/KeaAPI CRDs (group kea.unkin.net)
- render deterministic kea-dhcp4.conf + kea-ctrl-agent.conf into a ConfigMap and
  roll the StatefulSet via a config-hash annotation; best-effort hot-reload via
  the kea-ctrl-agent REST channel
- run HA hot-standby (memfile leases) with stable per-peer DNS identity from a
  StatefulSet; expose an anycast LoadBalancer Service for PureLB
- represent the full legacy dhcpd config: 198.18.13-17.0/24 pools, pool-less
  198.18.25.0/24, and the Legacy/UEFI-64 PXE arch classes (option 93)
- add the KeaAPI-spawned REST service: Terraform-friendly CRUD over subnet and
  client-class CRs (stable IDs, PUT upsert, 404 drift, bearer-token auth)
- add Makefile (patch/minor/major tag targets), distroless operator/api images,
  an AlmaLinux+EPEL kea workload image, and woodpecker CI with k8s resources +
  serviceAccountName on every step
- unit tests for config rendering, controller reconcile/config-hash, and the API

Claude-Session: https://claude.ai/code/session_01JUoARVdmhxKQHyyyp1pxeT
2026-08-02 18:42:46 +10:00

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YAML

apiVersion: v1
kind: Namespace
metadata:
name: dhcp-system
---
apiVersion: kea.unkin.net/v1alpha1
kind: KeaCluster
metadata:
name: pxe
namespace: dhcp-system
spec:
replicas: 2
image: git.unkin.net/unkin/kea:latest
domainName: main.unkin.net
defaultLeaseTime: 1200
maxLeaseTime: 86400
ha:
mode: hot-standby
service:
type: LoadBalancer
# Anycast address handed out by PureLB; router relays forward unicast here.
loadBalancerIP: 198.18.19.53
ipAddressPool: dhcp-anycast
resources:
requests:
cpu: 100m
memory: 128Mi
limits:
cpu: "1"
memory: 512Mi