Question

这是我编写的用于通过client-go进行端口转发的代码的易于运行的版本。有硬编码的Pod名称，名称空间和端口。您可以使用自己运行的计算机更改它们。

package main

import (
    "flag"
    "net/http"
    "os"
    "path/filepath"

    "k8s.io/client-go/kubernetes"
    "k8s.io/client-go/tools/clientcmd"
    "k8s.io/client-go/tools/portforward"
    "k8s.io/client-go/transport/spdy"
)

func main() {

    stopCh := make(<-chan struct{})
    readyCh := make(chan struct{})
    var kubeconfig *string
    if home := "/home/gianarb"; home != "" {
        kubeconfig = flag.String("kubeconfig", filepath.Join(home, ".kube", "config"), "(optional) absolute path to the kubeconfig file")
    } else {
        kubeconfig = flag.String("kubeconfig", "", "absolute path to the kubeconfig file")
    }
    flag.Parse()

    // use the current context in kubeconfig
    config, err := clientcmd.BuildConfigFromFlags("", *kubeconfig)
    if err != nil {
        panic(err.Error())
    }

    // create the clientset
    clientset, err := kubernetes.NewForConfig(config)
    if err != nil {
        panic(err.Error())
    }

    reqURL := clientset.RESTClient().Post().
        Resource("pods").
        Namespace("default").
        Name("test").
        SubResource("portforward").URL()

    transport, upgrader, err := spdy.RoundTripperFor(config)
    if err != nil {
        panic(err)
    }
    dialer := spdy.NewDialer(upgrader, &http.Client{Transport: transport}, http.MethodPost, reqURL)
    fw, err := portforward.New(dialer, []string{"9999:9999"}, stopCh, readyCh, os.Stdout, os.Stdout)
    if err != nil {
        panic(err)
    }
    if err := fw.ForwardPorts(); err != nil {
        panic(err)
    }
}

golang版本1.13：

    k8s.io/api v0.0.0-20190409021203-6e4e0e4f393b
    k8s.io/apimachinery v0.0.0-20190404173353-6a84e37a896d
    k8s.io/cli-runtime v0.0.0-20190409023024-d644b00f3b79
    k8s.io/client-go v11.0.0+incompatible

我得到的错误是

错误升级连接：

但是:之后什么也没有。您对此主题有经验吗？谢谢

Answer 1

我的问题已部分解决。至少我让它工作了，对此我感到满意。

以下代码生成的URL为https://192.168.99.125:8443/namespaces/default/pods/influxdb-65c9fdf9cb-nzvpf/portforward?timeout=32s

reqURL := clientset.RESTClient().Post().
        Resource("pods").
        Namespace("default").
        Name("test").
        SubResource("portforward").URL()

这是错误的，正确的是：

https://192.168.99.125:8443/api/v1/namespaces/default/pods/influxdb-65c9fdf9cb-nzvpf/portforward

这是我现在生成该URL的工作：

    path := fmt.Sprintf("/api/v1/namespaces/%s/pods/%s/portforward", "default", podName)

    hostIP := strings.TrimLeft(config.Host, "htps:/")
    serverURL := url.URL{Scheme: "https", Path: path, Host: hostIP}
    dialer := spdy.NewDialer(upgrader, &http.Client{Transport: transport}, http.MethodPost, &serverURL)

Answer 2

var rngN18_29 = AllShts[b].getRange("N18:N29")
var formulas = rngN18_29.getFormulas();
for (var a = 0; a < formulas.length; a++) {      
   formulas[a][0] =  formulas[a][0].replace("V","W");
}
rngN18_29.setFormulas(formulas);

为我工作，并使用... / api / v1 /命名空间...

Answer 3

*rest.Request 有一个 Prefix(string) 方法可以用来插入缺失的子路径：

reqURL := clientset.RESTClient().Post().
        Prefix("api/v1").
        Resource("pods").
        Namespace("default").
        Name("test").
        SubResource("portforward").URL()

通过client-go升级端口转发中的连接错误

3 个答案: