/
node_controller.go
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/
node_controller.go
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/*
Copyright @ 2021 fushaosong <fushaosong@beyondlet.com>.
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"
carinav1 "github.com/bocloud/carina/api/v1"
"github.com/bocloud/carina/utils"
"github.com/bocloud/carina/utils/log"
corev1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/client-go/util/workqueue"
ctrl "sigs.k8s.io/controller-runtime"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/controller"
"sigs.k8s.io/controller-runtime/pkg/event"
"sigs.k8s.io/controller-runtime/pkg/predicate"
"time"
)
// NodeReconciler reconciles a Node object
type NodeReconciler struct {
client.Client
// stop
StopChan <-chan struct{}
// cacheLV
cacheNoDeleteLv map[string]uint8
}
// +kubebuilder:rbac:groups="",resources=nodes,verbs=get;list;watch;update;patch
// +kubebuilder:rbac:groups="",resources=persistentvolumeclaims,verbs=get;list;watch;delete
// +kubebuilder:rbac:groups=carina.storage.io,resources=logicvolumes,verbs=get;list;watch;create;update;patch;delete
// +kubebuilder:rbac:groups=carina.storage.io,resources=logicvolumes/status,verbs=get;update;patch
// Reconcile finalize Node
func (r *NodeReconciler) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) {
log.Infof("node %s reconcile manager...", req.Name)
// your logic here
go r.resourceReconcile(ctx)
return ctrl.Result{}, nil
}
// SetupWithManager sets up Reconciler with Manager.
func (r *NodeReconciler) SetupWithManager(mgr ctrl.Manager) error {
r.cacheNoDeleteLv = make(map[string]uint8)
ctx := context.Background()
ticker1 := time.NewTicker(600 * time.Second)
go func(t *time.Ticker) {
defer ticker1.Stop()
for {
select {
case <-t.C:
_ = r.resourceReconcile(ctx)
case <-r.StopChan:
log.Info("stop node reconcile...")
return
}
}
}(ticker1)
pred := predicate.Funcs{
CreateFunc: func(event.CreateEvent) bool { return false },
DeleteFunc: func(event.DeleteEvent) bool { return true },
UpdateFunc: func(event.UpdateEvent) bool { return false },
GenericFunc: func(event.GenericEvent) bool { return false },
}
return ctrl.NewControllerManagedBy(mgr).
WithEventFilter(pred).
WithOptions(controller.Options{
RateLimiter: workqueue.NewItemFastSlowRateLimiter(10*time.Second, 60*time.Second, 5),
}).
For(&corev1.Node{}).
Complete(r)
}
func (r *NodeReconciler) resourceReconcile(ctx context.Context) error {
log.Infof("logic volume resource reconcile ...")
o, err := r.getNeedRebuildVolume(ctx)
if err != nil {
log.Errorf("get need rebuild volume error %s", err.Error())
return err
}
err = r.rebuildVolume(ctx, o)
if err != nil {
log.Errorf("rebuild volume error %s", err.Error())
return err
}
return nil
}
func (r *NodeReconciler) getNeedRebuildVolume(ctx context.Context) (map[string]client.ObjectKey, error) {
volumeObjectMap := map[string]client.ObjectKey{}
lvList := new(carinav1.LogicVolumeList)
err := r.List(ctx, lvList)
if err != nil {
return volumeObjectMap, err
}
if len(lvList.Items) == 0 {
return volumeObjectMap, nil
}
// 获取所有Node
nl := new(corev1.NodeList)
err = r.List(ctx, nl)
if err != nil {
log.Errorf("unable to fetch node list %s", err.Error())
return volumeObjectMap, err
}
nodeStatus := map[string]string{}
for _, n := range nl.Items {
if n.DeletionTimestamp != nil || n.Status.Phase == corev1.NodeTerminated {
nodeStatus[n.Name] = "abnormal"
continue
}
nodeStatus[n.Name] = "normal"
}
pvMap, err := r.pvMap(ctx)
if err != nil {
log.Errorf("unable to fetch pv list %s", err.Error())
return volumeObjectMap, err
}
for _, lv := range lvList.Items {
// 删除没有对应lv的logic volume
_, ok := pvMap[lv.Name]
if lv.Status.Status != "" && !ok {
if lv.Finalizers != nil && utils.ContainsString(lv.Finalizers, utils.LogicVolumeFinalizer) {
log.Infof("remove logic volume %s", lv.Name)
if err = r.Delete(ctx, &lv); err != nil {
log.Errorf(" failed to remove logic volume %s", err.Error())
return volumeObjectMap, err
}
lv2 := lv.DeepCopy()
lv2.Finalizers = utils.SliceRemoveString(lv2.Finalizers, utils.LogicVolumeFinalizer)
patch := client.MergeFrom(&lv)
if err := r.Patch(ctx, lv2, patch); err != nil {
log.Error(err, " failed to remove finalizer name ", lv.Name)
return volumeObjectMap, err
}
}
continue
}
// 重建逻辑
if lv.Status.Status == "Success" {
if _, ok := r.cacheNoDeleteLv[lv.Name]; ok {
continue
}
if v, ok := nodeStatus[lv.Spec.NodeName]; ok && v == "normal" {
continue
}
}
volumeObjectMap[lv.Name] = client.ObjectKey{Namespace: lv.Spec.NameSpace, Name: lv.Spec.Pvc}
if lv.Finalizers != nil && utils.ContainsString(lv.Finalizers, utils.LogicVolumeFinalizer) {
lv2 := lv.DeepCopy()
lv2.Finalizers = utils.SliceRemoveString(lv2.Finalizers, utils.LogicVolumeFinalizer)
patch := client.MergeFrom(&lv)
if err := r.Patch(ctx, lv2, patch); err != nil {
log.Error(err, " failed to remove finalizer name ", lv.Name)
return volumeObjectMap, err
}
}
}
return volumeObjectMap, nil
}
func (r *NodeReconciler) rebuildVolume(ctx context.Context, volumeObjectMap map[string]client.ObjectKey) error {
var pvc corev1.PersistentVolumeClaim
for key, o := range volumeObjectMap {
err := r.Client.Get(ctx, o, &pvc)
if err != nil {
r.cacheNoDeleteLv[key] = 0
log.Warnf("unable to fetch PersistentVolumeClaim %s %s %s", o.Namespace, o.Name, err.Error())
continue
}
newPvc := corev1.PersistentVolumeClaim{
ObjectMeta: metav1.ObjectMeta{
Name: o.Name,
Namespace: o.Namespace,
},
Spec: corev1.PersistentVolumeClaimSpec{
AccessModes: pvc.Spec.AccessModes,
Selector: pvc.Spec.Selector,
Resources: pvc.Spec.Resources,
StorageClassName: pvc.Spec.StorageClassName,
VolumeMode: pvc.Spec.VolumeMode,
DataSource: pvc.Spec.DataSource,
},
Status: corev1.PersistentVolumeClaimStatus{},
}
log.Infof("rebuild pvc namespace: %s name: %s", o.Namespace, o.Name)
err = r.Delete(ctx, &newPvc)
if err != nil {
log.Errorf("delete pvc %s %s error %s", o.Namespace, o.Name, err.Error())
}
err = utils.UntilMaxRetry(func() error {
return r.Create(ctx, &newPvc)
}, 12, 10*time.Second)
if err != nil {
log.Warnf("create pvc failed namespace: %s, name %s, storageClass %s, volumeMode %s, resources: %d, dataSource: %s",
newPvc.Namespace, newPvc.Name, *(newPvc.Spec.StorageClassName), *(newPvc.Spec.VolumeMode),
newPvc.Spec.Resources.Requests.Storage().Value(),
)
log.Errorf("retry ten times create pvc error %s, please check", err.Error())
return err
}
}
return nil
}
func (r *NodeReconciler) pvMap(ctx context.Context) (map[string]uint8, error) {
result := map[string]uint8{}
pvList := new(corev1.PersistentVolumeList)
err := r.List(ctx, pvList)
if err != nil {
return result, err
}
for _, pv := range pvList.Items {
result[pv.Name] = 0
}
return result, nil
}