### Notable Env Vars

| Env Var            | Default         | Purpose                                                                                                                                       |

	cniConfigStr = strings.ReplaceAll(cniConfigStr, "__KUBECONFIG_FILEPATH__", filepath.Join(vars.cniNetDir, vars.kubeconfigFilename))
	cniConfigStr = strings.ReplaceAll(cniConfigStr, "__KUBERNETES_SERVICE_HOST__", vars.k8sServiceHost)
	cniConfigStr = strings.ReplaceAll(cniConfigStr, "__KUBERNETES_SERVICE_PORT__", vars.k8sServicePort)
	cniConfigStr = strings.ReplaceAll(cniConfigStr, "__KUBERNETES_NODE_NAME__", vars.k8sNodeName)

	// Note: we do not rely on istio env package to retrieve configuration. We relies on viper.
	// This is just to make sure the reference doc tool can generate doc with these vars as env variable at istio.io.
	env.Register(envName, defaultValue, usage)
	bindViper(name)
}

func bindViper(name string) {
	if err := viper.BindPFlag(name, rootCmd.Flags().Lookup(name)); err != nil {

	"istio.io/istio/pkg/log"
	netutil "istio.io/istio/pkg/util/net"
	"istio.io/istio/pkg/util/protomarshal"
	"istio.io/istio/pkg/util/shellescape"
)

var (
	// TODO refactor away from package vars and add more UTs
	tokenDuration  int64
	name           string
	serviceAccount string
	filename       string
	outputDir      string
	clusterID      string
	ingressIP      string
	internalIP     string