使用client-go實現k8s操作

這是一個建立於 的文章，其中的資訊可能已經有所發展或是發生改變。package main


import (
"flag"
"fmt"
"k8s.io/client-go/1.4/kubernetes"
"k8s.io/client-go/1.4/pkg/api"
"k8s.io/client-go/1.4/pkg/api/unversioned"
"k8s.io/client-go/1.4/pkg/api/v1"
"k8s.io/client-go/1.4/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("116.213.205.180:8080", *kubeconfig)
if err != nil {
panic(err.Error())
}
// creates the clientset
clientset, err := kubernetes.NewForConfig(config)
if err != nil {
panic(err.Error())
}
// 建立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,
},
},
},
},
}
_, err = clientset.Core().Pods("default").Create(pod)
if err != nil {
panic(err.Error())
}
// 擷取現有的pod數量
pods, err := clientset.Core().Pods("").List(api.ListOptions{})
if err != nil {
panic(err.Error())
}
fmt.Printf("There are %d pods in the cluster\n", len(pods.Items))


// 建立namespace
nc := new(v1.Namespace)
nc.TypeMeta = unversioned.TypeMeta{Kind: "NameSpace", APIVersion: "v1"}
nc.ObjectMeta = v1.ObjectMeta{
Name: "k8s-test",
}
nc.Spec = v1.NamespaceSpec{}
_, err = clientset.Core().Namespaces().Create(nc)
if err != nil {
log.Println(err)
}


// 擷取namespace
namespaces, err := clientset.Core().Namespaces().List(api.ListOptions{})
if err != nil {
panic(err.Error())
}
fmt.Printf("There are %d namespaces in the cluster\n", len(namespaces.Items))
}