package delete
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import (
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"context"
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"flag"
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"fmt"
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"os"
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"path/filepath"
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"k8s.io/apimachinery/pkg/api/errors"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/client-go/kubernetes"
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"k8s.io/client-go/tools/clientcmd"
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)
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var (
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replicas int32 = 3
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port int32 = 9081
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namespaces = []string{"guangsheng", "geruimi", "tongsheng"}
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usedNodePorts = make(map[int32]bool)
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)
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func main() {
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// 配置 Kubernetes 集群的 kubeconfig 路径
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kubeconfig := flag.String("kubeconfig", filepath.Join(homeDir(), ".kube", "config"), "kubeconfig file")
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flag.Parse()
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// 创建 Kubernetes 客户端
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config, err := clientcmd.BuildConfigFromFlags("", *kubeconfig)
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if err != nil {
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panic(err.Error())
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}
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clientset, err := kubernetes.NewForConfig(config)
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if err != nil {
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panic(err.Error())
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}
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// 删除多个 Namespace 下的相同名称的 Deployment 和 Service
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for _, ns := range namespaces {
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err = DeleteResources(clientset, ns, ns, ns)
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if err != nil {
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panic(err)
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}
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}
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fmt.Println("Resources deleted.")
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}
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// DeleteResources 删除指定的 Namespace、Deployment 和 Service
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func DeleteResources(clientset *kubernetes.Clientset, namespace, deploymentName, serviceName string) error {
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fmt.Println("\033[1;37;40mDeleting resources in Namespace:", namespace, "\033[0m")
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// 删除 Deployment
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err := deleteDeployment(clientset, namespace, deploymentName)
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if err != nil {
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return err
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}
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// 删除 Service
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err = deleteService(clientset, namespace, serviceName)
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if err != nil {
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return err
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}
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// 删除 Namespace
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err = deleteNamespace(clientset, namespace)
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if err != nil {
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return err
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}
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return nil
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}
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// deleteDeployment 删除指定的 Deployment
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func deleteDeployment(clientset *kubernetes.Clientset, namespace, deploymentName string) error {
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fmt.Println("\033[1;37;40mDeleting Deployment:", deploymentName, "\033[0m")
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err := clientset.AppsV1().Deployments(namespace).Delete(context.TODO(), deploymentName, metav1.DeleteOptions{})
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if err != nil {
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if errors.IsNotFound(err) {
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fmt.Printf("Deployment %s not found in Namespace %s\n", deploymentName, namespace)
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} else {
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return fmt.Errorf("failed to delete Deployment: %v", err)
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}
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} else {
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fmt.Printf("Deployment %s deleted from Namespace %s\n", deploymentName, namespace)
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}
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return nil
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}
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// deleteService 删除指定的 Service
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func deleteService(clientset *kubernetes.Clientset, namespace, serviceName string) error {
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fmt.Println("\033[1;37;40mDeleting Service:", serviceName, "\033[0m")
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err := clientset.CoreV1().Services(namespace).Delete(context.TODO(), serviceName, metav1.DeleteOptions{})
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if err != nil {
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if errors.IsNotFound(err) {
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fmt.Printf("Service %s not found in Namespace %s\n", serviceName, namespace)
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} else {
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return fmt.Errorf("failed to delete Service: %v", err)
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}
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} else {
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fmt.Printf("Service %s deleted from Namespace %s\n", serviceName, namespace)
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}
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return nil
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}
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// deleteNamespace 删除指定的 Namespace
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func deleteNamespace(clientset *kubernetes.Clientset, namespace string) error {
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fmt.Println("\033[1;37;40mDeleting Namespace:", namespace, "\033[0m")
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err := clientset.CoreV1().Namespaces().Delete(context.TODO(), namespace, metav1.DeleteOptions{})
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if err != nil {
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if errors.IsNotFound(err) {
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fmt.Printf("Namespace %s not found\n", namespace)
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} else {
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return fmt.Errorf("failed to delete Namespace: %v", err)
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}
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} else {
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fmt.Printf("Namespace %s deleted\n", namespace)
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}
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return nil
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}
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// homeDir 获取当前用户的家目录路径
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func homeDir() string {
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if h := os.Getenv("HOME"); h != "" {
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return h
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}
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return os.Getenv("USERPROFILE") // Windows 环境下获取用户目录
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}
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