HAOJX

生成config和client的几种写法

字数统计: 279阅读时长: 1 min
2021/09/29 Share

第一种

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package main

import (
	"context"
	"fmt"
	v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	"k8s.io/cli-runtime/pkg/genericclioptions"
	"k8s.io/client-go/kubernetes"
	"log"
)

func main() {
	configFlags:=genericclioptions.NewConfigFlags(true)
	config,err:=configFlags.ToRawKubeConfigLoader().ClientConfig()
	if err!=nil{log.Fatalln(err)}

	client,err:=kubernetes.NewForConfig(config)
	if err!=nil{log.Fatalln(err)}

	list,err:=client.CoreV1().Pods("default").List(context.Background(),v1.ListOptions{})
	if err!=nil{log.Fatalln(err)}
	for _,pod:=range list.Items{
		fmt.Println(pod.Name)
	}

}

第二种

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package k8sconfig

import (
	"k8s.io/client-go/rest"
	"k8s.io/client-go/tools/clientcmd"
	"log"
	"os"
)
//全局变量
type K8sConfig struct {}

func NewK8sConfig() *K8sConfig {
	return &K8sConfig{}
}
const NSFile="/var/run/secrets/kubernetes.io/serviceaccount/namespace"

//POD里  体内
func K8sRestConfigInPod() *rest.Config{
	config,err:=rest.InClusterConfig()
	if err!=nil{
		log.Fatal(err)
	}
	return config
}
// 获取 config对象
func (*K8sConfig) K8sRestConfig() *rest.Config{
	if os.Getenv("release")=="1"{ //自定义环境
		log.Println("run in cluster")
		return K8sRestConfigInPod()
	}
	log.Println("run outside cluster")
	config, err := clientcmd.BuildConfigFromFlags("","./resources/config" )
	if err!=nil{
		log.Fatal(err)
	}
	//config.Insecure=true
	return config
}

func (this *K8sConfig)InitClient() *kubernetes.Clientset{
	//config:=&rest.Config{
	//	Host:"<http://192.168.92.129:8001>",
	//	//Host: "<http://127.0.0.1:8001>",
 	//}
	//config,err:= clientcmd.BuildConfigFromFlags("","config")
	//if err != nil {
	//	log.Fatal(err)
	//}
	c,err:=kubernetes.NewForConfig(this.K8sRestConfig())
	if err!=nil{
		log.Fatal(err)
	}
	return c
}

原文作者：HAOJX

原文链接：haojianxun.github.io/2021/09/29/生成config和client的几种写法/

发表日期：September 29th 2021, 12:00:00 am

更新日期：October 14th 2022, 12:36:24 am

版权声明：本文采用知识共享署名-非商业性使用 4.0 国际许可协议进行许可

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