56 lines
1.3 KiB
Go
56 lines
1.3 KiB
Go
package main
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import (
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"context"
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"flag"
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"fmt"
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"log"
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"path/filepath"
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corev1 "k8s.io/api/core/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/watch"
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"k8s.io/client-go/kubernetes"
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"k8s.io/client-go/tools/clientcmd"
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"k8s.io/client-go/util/homedir"
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)
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func main() {
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var kubeconfig string
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flag.StringVar(&kubeconfig, "kubeconfig", filepath.Join(homedir.HomeDir(), ".kube", "config"), "(optional) absolute path to the kubeconfig file")
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flag.Parse()
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// use the current context in kubeconfig
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config, err := clientcmd.BuildConfigFromFlags("", kubeconfig)
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if err != nil {
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log.Fatal(err)
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}
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ctx := context.Background()
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// 创建 clientset
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clientset, err := kubernetes.NewForConfig(config)
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if err != nil {
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log.Fatal(err)
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}
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// 使用 clientsent 监听 kube-system 下 Pod 对象
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list, err := clientset.CoreV1().Pods("kube-system").
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Watch(ctx, metav1.ListOptions{Watch: true})
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if err != nil {
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log.Fatal(err)
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}
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for event := range list.ResultChan() {
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pod := event.Object.(*corev1.Pod)
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switch event.Type {
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case watch.Added:
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fmt.Printf("Pod %s added\n", pod.Name)
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// todo: reconcile logic goes here
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case watch.Modified:
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fmt.Printf("Pod %s modified\n", pod.Name)
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// todo: reconcile logic goes here
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case watch.Deleted:
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fmt.Printf("Pod %s deleted\n", pod.Name)
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// todo: reconcile logic goes here
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}
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}
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}
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