INNER CODE UNIT · Go

main

zq2599/blog_demos · client-go-tutorials/discoveryclientdemo/main.go:13

func main() {

	var kubeconfig *string

	// home是家目录，如果能取得家目录的值，就可以用来做默认值
	if home:=homedir.HomeDir(); home != "" {
		// 如果输入了kubeconfig参数，该参数的值就是kubeconfig文件的绝对路径，
		// 如果没有输入kubeconfig参数，就用默认路径~/.kube/config
		kubeconfig = flag.String("kubeconfig", filepath.Join(home, ".kube", "config"), "(optional) absolute path to the kubeconfig file")
	} else {
		// 如果取不到当前用户的家目录，就没办法设置kubeconfig的默认目录了，只能从入参中取
		kubeconfig = flag.String("kubeconfig", "", "absolute path to the kubeconfig file")
	}

	flag.Parse()

	// 从本机加载kubeconfig配置文件，因此第一个参数为空字符串
	config, err := clientcmd.BuildConfigFromFlags("", *kubeconfig)

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