mirror of https://github.com/kubernetes/kops.git
116 lines
3.6 KiB
Go
116 lines
3.6 KiB
Go
/*
|
|
Copyright 2024 The Kubernetes Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package controllers
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
|
|
"github.com/go-logr/logr"
|
|
corev1 "k8s.io/api/core/v1"
|
|
apierrors "k8s.io/apimachinery/pkg/api/errors"
|
|
"k8s.io/apimachinery/pkg/types"
|
|
corev1client "k8s.io/client-go/kubernetes/typed/core/v1"
|
|
"k8s.io/klog/v2"
|
|
kopsapi "k8s.io/kops/pkg/apis/kops/v1alpha2"
|
|
ctrl "sigs.k8s.io/controller-runtime"
|
|
"sigs.k8s.io/controller-runtime/pkg/client"
|
|
"sigs.k8s.io/controller-runtime/pkg/manager"
|
|
)
|
|
|
|
// NewMetalIPAMReconciler is the constructor for a MetalIPAMReconciler
|
|
func NewMetalIPAMReconciler(ctx context.Context, mgr manager.Manager) (*MetalIPAMReconciler, error) {
|
|
klog.Info("starting metal ipam controller")
|
|
r := &MetalIPAMReconciler{
|
|
client: mgr.GetClient(),
|
|
log: ctrl.Log.WithName("controllers").WithName("metal_ipam"),
|
|
}
|
|
|
|
coreClient, err := corev1client.NewForConfig(mgr.GetConfig())
|
|
if err != nil {
|
|
return nil, fmt.Errorf("building corev1 client: %w", err)
|
|
}
|
|
r.coreV1Client = coreClient
|
|
|
|
return r, nil
|
|
}
|
|
|
|
// MetalIPAMReconciler observes Node objects, assigning their `PodCIDRs` from the instance's `ExternalIpv6`.
|
|
type MetalIPAMReconciler struct {
|
|
// client is the controller-runtime client
|
|
client client.Client
|
|
|
|
// log is a logr
|
|
log logr.Logger
|
|
|
|
// coreV1Client is a client-go client for patching nodes
|
|
coreV1Client *corev1client.CoreV1Client
|
|
}
|
|
|
|
// +kubebuilder:rbac:groups=,resources=nodes,verbs=get;list;watch;patch
|
|
// Reconcile is the main reconciler function that observes node changes.
|
|
func (r *MetalIPAMReconciler) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) {
|
|
log := klog.FromContext(ctx)
|
|
|
|
node := &corev1.Node{}
|
|
if err := r.client.Get(ctx, req.NamespacedName, node); err != nil {
|
|
if apierrors.IsNotFound(err) {
|
|
// we'll ignore not-found errors, since they can't be fixed by an immediate
|
|
// requeue (we'll need to wait for a new notification), and we can get them
|
|
// on deleted requests.
|
|
return ctrl.Result{}, nil
|
|
}
|
|
log.Error(err, "unable to fetch node", "node.name", node.Name)
|
|
return ctrl.Result{}, err
|
|
}
|
|
|
|
host := &kopsapi.Host{}
|
|
id := types.NamespacedName{
|
|
Namespace: "kops-system",
|
|
Name: node.Name,
|
|
}
|
|
if err := r.client.Get(ctx, id, host); err != nil {
|
|
log.Error(err, "unable to fetch host", "id", id)
|
|
return ctrl.Result{}, err
|
|
}
|
|
|
|
if len(node.Spec.PodCIDRs) != 0 && len(host.Spec.PodCIDRs) > 0 {
|
|
log.V(2).Info("node has pod cidrs, skipping", "node.name", node.Name)
|
|
return ctrl.Result{}, nil
|
|
}
|
|
|
|
if len(host.Spec.PodCIDRs) == 0 {
|
|
log.Info("host record has no pod cidrs, cannot assign pod cidrs to node", "node.name", node.Name)
|
|
return ctrl.Result{}, nil
|
|
}
|
|
|
|
log.Info("assigning pod cidrs to node", "node.name", node.Name, "pod.cidrs", host.Spec.PodCIDRs)
|
|
if err := patchNodePodCIDRs(r.coreV1Client, ctx, node, host.Spec.PodCIDRs); err != nil {
|
|
log.Error(err, "unable to patch node", "node.name", node.Name)
|
|
return ctrl.Result{}, err
|
|
}
|
|
|
|
return ctrl.Result{}, nil
|
|
}
|
|
|
|
func (r *MetalIPAMReconciler) SetupWithManager(mgr ctrl.Manager) error {
|
|
return ctrl.NewControllerManagedBy(mgr).
|
|
Named("metal_ipam").
|
|
For(&corev1.Node{}).
|
|
Complete(r)
|
|
}
|