在client-go中观察kubernetes pod状态要完成 [英] Watch kubernetes pod status to be completed in client-go

问题描述

我正在 k8 客户端 go 中创建一个 pod，并制作手表以在 pod 完成时收到通知，以便我可以读取 pod 的日志.观看界面似乎没有在频道上提供任何事件.这是代码，我将如何收到通知，即 pod 状态现在已完成并准备好读取日志

I am creating a pod in k8 client go and making a watch to get notified for when the pod has completed so that i can read the logs of the pod. The watch interface doesnt seem to provide any events on the channel. Here is the code, how would I get notified that the pod status is now completed and is ready to read the logs

func readLogs(clientset *kubernetes.Clientset) {
// namespace := "default"
// label := "cithu"
var (
    pod *v1.Pod
    // watchface watch.Interface
    err error
)
// returns a pod after creation

pod, err = createPod(clientset)
fmt.Println(pod.Name, pod.Status, err)

if watchface, err = clientset.CoreV1().Pods(namespace).Watch(metav1.ListOptions{
    LabelSelector: pod.Name,
}); err != nil {
    log.Fatalf(err.Error())
}

// How do I get notified when the pod.Status == completed
}

推荐答案

可以使用以下代码段列出事件.然后，您可以根据需要处理 pod 事件.

The events can be listed using the following snippet. You can then process the pod events as needed.

label := ""
for k := range pod.GetLabels() {
    label = k
    break
}
watch, err := clientset.CoreV1().Pods(namespace).Watch(metav1.ListOptions{
    LabelSelector: label,
})
if err != nil {
    log.Fatal(err.Error())
}
go func() {
    for event := range watch.ResultChan() {
        fmt.Printf("Type: %v
", event.Type)
        p, ok := event.Object.(*v1.Pod)
        if !ok {
            log.Fatal("unexpected type")
        }
        fmt.Println(p.Status.ContainerStatuses)
        fmt.Println(p.Status.Phase)
    }
}()
time.Sleep(5 * time.Second)

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