unkinben
d3fb5dcd1a
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
69 lines
2.0 KiB
Go
69 lines
2.0 KiB
Go
package main
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import (
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"flag"
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"os"
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"k8s.io/apimachinery/pkg/runtime"
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utilruntime "k8s.io/apimachinery/pkg/util/runtime"
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clientgoscheme "k8s.io/client-go/kubernetes/scheme"
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ctrl "sigs.k8s.io/controller-runtime"
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"sigs.k8s.io/controller-runtime/pkg/healthz"
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"sigs.k8s.io/controller-runtime/pkg/log/zap"
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metricsserver "sigs.k8s.io/controller-runtime/pkg/metrics/server"
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keav1alpha1 "git.unkin.net/unkin/kea-operator/api/v1alpha1"
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"git.unkin.net/unkin/kea-operator/internal/controller"
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)
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var scheme = runtime.NewScheme()
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func init() {
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utilruntime.Must(clientgoscheme.AddToScheme(scheme))
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utilruntime.Must(keav1alpha1.AddToScheme(scheme))
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}
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func main() {
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var metricsAddr, probeAddr string
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var leaderElect bool
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flag.StringVar(&metricsAddr, "metrics-bind-address", ":8080", "metrics endpoint bind address")
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flag.StringVar(&probeAddr, "health-probe-bind-address", ":8081", "health probe bind address")
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flag.BoolVar(&leaderElect, "leader-elect", false, "enable leader election")
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flag.Parse()
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ctrl.SetLogger(zap.New(zap.UseDevMode(false)))
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log := ctrl.Log.WithName("setup")
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mgr, err := ctrl.NewManager(ctrl.GetConfigOrDie(), ctrl.Options{
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Scheme: scheme,
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Metrics: metricsserver.Options{BindAddress: metricsAddr},
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HealthProbeBindAddress: probeAddr,
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LeaderElection: leaderElect,
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LeaderElectionID: "kea-operator",
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})
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if err != nil {
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log.Error(err, "unable to create manager")
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os.Exit(1)
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}
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if err := controller.SetupAll(mgr); err != nil {
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log.Error(err, "unable to set up controllers")
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os.Exit(1)
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}
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if err := mgr.AddHealthzCheck("healthz", healthz.Ping); err != nil {
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log.Error(err, "unable to set up health check")
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os.Exit(1)
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}
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if err := mgr.AddReadyzCheck("readyz", healthz.Ping); err != nil {
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log.Error(err, "unable to set up ready check")
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os.Exit(1)
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}
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log.Info("starting kea-operator")
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if err := mgr.Start(ctrl.SetupSignalHandler()); err != nil {
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log.Error(err, "manager exited")
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os.Exit(1)
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}
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}
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