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Merge pull request #5848 from chaosi-zju/automated-cherry-pick-of-#44…
…51-upstream-release-1.11 Automated cherry pick of #4451: enhanced forced deletion on karmadactl unjoin
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,151 @@ | ||
| /* | ||
| Copyright 2024 The Karmada 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 util | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "time" | ||
|
|
||
| corev1 "k8s.io/api/core/v1" | ||
| apierrors "k8s.io/apimachinery/pkg/api/errors" | ||
| metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" | ||
| "k8s.io/apimachinery/pkg/util/wait" | ||
| kubeclient "k8s.io/client-go/kubernetes" | ||
| "k8s.io/klog/v2" | ||
| "sigs.k8s.io/controller-runtime/pkg/controller/controllerutil" | ||
|
|
||
| karmadaclientset "github.com/karmada-io/karmada/pkg/generated/clientset/versioned" | ||
| "github.com/karmada-io/karmada/pkg/util" | ||
| "github.com/karmada-io/karmada/pkg/util/names" | ||
| ) | ||
|
|
||
| // DeleteClusterObject deletes the cluster object from the Karmada control plane. | ||
| func DeleteClusterObject(controlPlaneKubeClient kubeclient.Interface, controlPlaneKarmadaClient karmadaclientset.Interface, clusterName string, | ||
| timeout time.Duration, dryRun bool, forceDeletion bool) error { | ||
| if dryRun { | ||
| return nil | ||
| } | ||
|
|
||
| err := controlPlaneKarmadaClient.ClusterV1alpha1().Clusters().Delete(context.TODO(), clusterName, metav1.DeleteOptions{}) | ||
| if apierrors.IsNotFound(err) { | ||
| return fmt.Errorf("no cluster object %s found in karmada control Plane", clusterName) | ||
| } | ||
| if err != nil { | ||
| klog.Errorf("Failed to delete cluster object. cluster name: %s, error: %v", clusterName, err) | ||
| return err | ||
| } | ||
|
|
||
| // make sure the given cluster object has been deleted. | ||
| // If the operation times out and `forceDeletion` is true, then force deletion begins, which involves sequentially deleting the `work`, `executionSpace`, and `cluster` finalizers. | ||
| err = wait.PollUntilContextTimeout(context.TODO(), 1*time.Second, timeout, false, func(context.Context) (done bool, err error) { | ||
| _, err = controlPlaneKarmadaClient.ClusterV1alpha1().Clusters().Get(context.TODO(), clusterName, metav1.GetOptions{}) | ||
| if apierrors.IsNotFound(err) { | ||
| return true, nil | ||
| } | ||
| if err != nil { | ||
| klog.Errorf("Failed to get cluster %s. err: %v", clusterName, err) | ||
| return false, err | ||
| } | ||
| klog.Infof("Waiting for the cluster object %s to be deleted", clusterName) | ||
| return false, nil | ||
| }) | ||
|
|
||
| // If the Cluster object not be deleted within the timeout period, it is likely due to the resources in the member | ||
| // cluster can not be cleaned up. With the option force deletion, we will try to clean up the Cluster object by | ||
| // removing the finalizers from related resources. This behavior may result in some resources remain in the member | ||
| // clusters. | ||
| if err != nil && forceDeletion { | ||
| klog.Warningf("Deleting the cluster object timed out. cluster name: %s, error: %v", clusterName, err) | ||
| klog.Infof("Start forced deletion. cluster name: %s", clusterName) | ||
| executionSpaceName := names.GenerateExecutionSpaceName(clusterName) | ||
| err = removeWorkFinalizer(executionSpaceName, controlPlaneKarmadaClient) | ||
| if err != nil { | ||
| klog.Errorf("Force deletion. Failed to remove the finalizer of Work, error: %v", err) | ||
| } | ||
|
|
||
| err = removeExecutionSpaceFinalizer(executionSpaceName, controlPlaneKubeClient) | ||
| if err != nil { | ||
| klog.Errorf("Force deletion. Failed to remove the finalizer of Namespace(%s), error: %v", executionSpaceName, err) | ||
| } | ||
|
|
||
| err = removeClusterFinalizer(clusterName, controlPlaneKarmadaClient) | ||
| if err != nil { | ||
| klog.Errorf("Force deletion. Failed to remove the finalizer of Cluster(%s), error: %v", clusterName, err) | ||
| } | ||
|
|
||
| klog.Infof("Forced deletion is complete.") | ||
| return nil | ||
| } | ||
|
|
||
| return err | ||
| } | ||
|
|
||
| // removeWorkFinalizer removes the finalizer of works in the executionSpace. | ||
| func removeWorkFinalizer(executionSpaceName string, controlPlaneKarmadaClient karmadaclientset.Interface) error { | ||
| list, err := controlPlaneKarmadaClient.WorkV1alpha1().Works(executionSpaceName).List(context.TODO(), metav1.ListOptions{}) | ||
| if err != nil { | ||
| return fmt.Errorf("failed to list work in executionSpace %s", executionSpaceName) | ||
| } | ||
|
|
||
| for i := range list.Items { | ||
| work := &list.Items[i] | ||
| if !controllerutil.ContainsFinalizer(work, util.ExecutionControllerFinalizer) { | ||
| continue | ||
| } | ||
| controllerutil.RemoveFinalizer(work, util.ExecutionControllerFinalizer) | ||
| _, err = controlPlaneKarmadaClient.WorkV1alpha1().Works(executionSpaceName).Update(context.TODO(), work, metav1.UpdateOptions{}) | ||
| if err != nil { | ||
| return fmt.Errorf("failed to remove the finalizer of work(%s/%s)", executionSpaceName, work.GetName()) | ||
| } | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| // removeExecutionSpaceFinalizer removes the finalizer of executionSpace. | ||
| func removeExecutionSpaceFinalizer(executionSpaceName string, controlPlaneKubeClient kubeclient.Interface) error { | ||
| executionSpace, err := controlPlaneKubeClient.CoreV1().Namespaces().Get(context.TODO(), executionSpaceName, metav1.GetOptions{}) | ||
| if err != nil { | ||
| return fmt.Errorf("failed to get Namespace(%s)", executionSpaceName) | ||
| } | ||
|
|
||
| if !controllerutil.ContainsFinalizer(executionSpace, string(corev1.FinalizerKubernetes)) { | ||
| return nil | ||
| } | ||
|
|
||
| controllerutil.RemoveFinalizer(executionSpace, "kubernetes") | ||
| _, err = controlPlaneKubeClient.CoreV1().Namespaces().Update(context.TODO(), executionSpace, metav1.UpdateOptions{}) | ||
|
|
||
| return err | ||
| } | ||
|
|
||
| // removeClusterFinalizer removes the finalizer of cluster object. | ||
| func removeClusterFinalizer(clusterName string, controlPlaneKarmadaClient karmadaclientset.Interface) error { | ||
| cluster, err := controlPlaneKarmadaClient.ClusterV1alpha1().Clusters().Get(context.TODO(), clusterName, metav1.GetOptions{}) | ||
| if err != nil { | ||
| return fmt.Errorf("failed to get Cluster(%s)", clusterName) | ||
| } | ||
|
|
||
| if !controllerutil.ContainsFinalizer(cluster, util.ClusterControllerFinalizer) { | ||
| return nil | ||
| } | ||
|
|
||
| controllerutil.RemoveFinalizer(cluster, util.ClusterControllerFinalizer) | ||
| _, err = controlPlaneKarmadaClient.ClusterV1alpha1().Clusters().Update(context.TODO(), cluster, metav1.UpdateOptions{}) | ||
|
|
||
| return err | ||
| } |