1.使用client-go out-of-cluster

2.如果在集群内部可以使用incluster配置，只需要导入"k8s.io/client-go/1.5/rest" 使用config, err := rest.InClusterConfig()

2.需要将kubeconfig文件放到指定位置

package main

import (
	"flag"
	"k8s.io/client-go/1.5/kubernetes"
	"k8s.io/client-go/1.5/pkg/api"
	"k8s.io/client-go/1.5/pkg/api/unversioned"
	"k8s.io/client-go/1.5/pkg/api/v1"
	"k8s.io/client-go/1.5/tools/clientcmd"
	"log"
)

var (
	kubeconfig = flag.String("kubeconfig", "./config", "absolute path to the kubeconfig file")
)

func main() {
	flag.Parse()
	// uses the current context in kubeconfig
	config, err := clientcmd.BuildConfigFromFlags("", *kubeconfig)
	if err != nil {
		panic(err.Error())
	}
	// 创建client set
	clientset, err := kubernetes.NewForConfig(config)
	if err != nil {
		panic(err.Error())
	}
	// 获取现有的pod数量
	pods, err := clientset.Core().Pods("").List(api.ListOptions{})
	check_err(err)
	log.Printf("there are %d pods in cluster\n", len(pods.Items))

	// 创建pod
	pod := new(v1.Pod)
	pod.TypeMeta = unversioned.TypeMeta{Kind: "Pod", APIVersion: "v1"}
	pod.ObjectMeta = v1.ObjectMeta{Name: "testapi", Namespace: "default", Labels: map[string]string{"name": "testapi"}}
	pod.Spec = v1.PodSpec{
		RestartPolicy: v1.RestartPolicyAlways,
		Containers: []v1.Container{
			v1.Container{
				Name:  "testapi",
				Image: "nginx",
				Ports: []v1.ContainerPort{
					v1.ContainerPort{
						ContainerPort: 80,
						Protocol:      v1.ProtocolTCP,
					},
				},
			},
		},
	}
	podname, err := clientset.Core().Pods("default").Create(pod)
	check_err(err)
	log.Printf("pod %s have cretae\n", podname.ObjectMeta.Name)

	// 创建namespace
	ns := new(v1.Namespace)
	ns.TypeMeta = unversioned.TypeMeta{Kind: "NameSpace", APIVersion: "v1"}
	ns.ObjectMeta = v1.ObjectMeta{
		Name: "k8s-test",
	}
	ns.Spec = v1.NamespaceSpec{}
	nsname, err := clientset.Core().Namespaces().Create(ns)
	check_err(err)
	log.Printf("namespace %s have cretae\n", nsname.ObjectMeta.Name)

	// 获取现有的pod数量
	pods, err = clientset.Core().Pods("").List(api.ListOptions{})
	check_err(err)
	log.Printf("there are %d pods in cluster\n", len(pods.Items))

	//根据名称获取pod
	geterpod, err := clientset.Core().Pods("default").Get(podname.ObjectMeta.Name)
	check_err(err)
	// 删除pod
	// 因为关系到时间复杂度 需要加上UID保证唯一性
	err = clientset.Core().Pods("default").Delete(geterpod.ObjectMeta.Name, &api.DeleteOptions{Preconditions: &api.Preconditions{UID: &geterpod.ObjectMeta.UID}})
	check_err(err)
	log.Printf("namespace %s have delete\n", "testapi")

	//根据名称获取namespace
	geternsname, err := clientset.Core().Namespaces().Get(nsname.ObjectMeta.Name)
	check_err(err)

	// 删除namespace
	err = clientset.Core().Namespaces().Delete(geternsname.ObjectMeta.Name, &api.DeleteOptions{Preconditions: &api.Preconditions{UID: &geternsname.ObjectMeta.UID}})
	check_err(err)
	log.Printf("namespace %s have delete\n", geternsname.ObjectMeta.Name)

}

func check_err(err error) {
	if err != nil {
		log.Fatal("got err from apiserver: %s\n", err)
	}
}