How can I create a simple client app with the Kubernetes Go library?

Question

I\'m struggling with the Kubernetes Go library. The docs--at least the ones I found--appear out-of-date with the library itself. The example provided does not build because of

Answer 1

Here's how to do it with the latest Go client.

If you're inside the k8s cluster:

package main

import (
  "fmt"

  "k8s.io/client-go/1.5/kubernetes"
  "k8s.io/client-go/1.5/pkg/api/v1"
  "k8s.io/client-go/1.5/rest"
)

func main()  {
    config, err = rest.InClusterConfig()
    if err != nil {
      return nil, err
    }

    c, err := kubernetes.NewForConfig(config)
    if err != nil {
      return nil, err
    }

    // Get Pod by name
    pod, err := c.Pods(v1.NamespaceDefault).Get("my-pod")
    if err != nil {
        fmt.Println(err)
        return
    }

    // Print its creation time
    fmt.Println(pod.GetCreationTimestamp())
}

And if you're outside of the cluster:

package main

import (
  "fmt"

  "k8s.io/client-go/1.5/kubernetes"
  "k8s.io/client-go/1.5/pkg/api/v1"
  "k8s.io/client-go/1.5/tools/clientcmd"
)

func main()  {
    config, err := clientcmd.BuildConfigFromFlags("", )
    if err != nil {
      return nil, err
    }

    c, err := kubernetes.NewForConfig(config)
    if err != nil {
      return nil, err
    }

    // Get Pod by name
    pod, err := c.Pods(v1.NamespaceDefault).Get("my-pod")
    if err != nil {
        fmt.Println(err)
        return
    }

    // Print its creation time
    fmt.Println(pod.GetCreationTimestamp())
}

I have gone into more detail on this in a blog post.