"configValidation": true,
    "defaultPodDisruptionBudget": {
      "enabled": true
    },
    "defaultResources": {
      "requests": {
        "cpu": "10m"
      }
    },
    "enabled": false,
    "externalIstiod": false,
    "hub": "gcr.io/istio-testing",
    "imagePullPolicy": "",
    "imagePullSecrets": [],
    "istioNamespace": "istio-system",
    "istiod": {
      "enableAnalysis": false
    },

    "configValidation": true,
    "defaultPodDisruptionBudget": {
      "enabled": true
    },
    "defaultResources": {
      "requests": {
        "cpu": "10m"
      }
    },
    "enabled": false,
    "externalIstiod": false,
    "hub": "gcr.io/istio-testing",
    "imagePullPolicy": "",
    "imagePullSecrets": [
      "barSecret"
    ],
    "istioNamespace": "istio-system",
    "istiod": {
      "enableAnalysis": false

    # Must be set for any cluster configured with private docker registry.
    imagePullSecrets: []

    # Used to locate istiod.
    istioNamespace: istio-system

    externalIstiod: false
    remotePilotAddress: ""

    # Platform where Istio is deployed. Possible values are: "openshift", "gcp".
    # An empty value means it is a vanilla Kubernetes distribution, therefore no special

    "configValidation": true,
    "defaultPodDisruptionBudget": {
      "enabled": true
    },
    "defaultResources": {
      "requests": {
        "cpu": "10m"
      }
    },
    "enabled": false,
    "externalIstiod": false,
    "hub": "gcr.io/istio-testing",
    "imagePullPolicy": "",
    "imagePullSecrets": [],
    "istioNamespace": "istio-system",
    "istiod": {
      "enableAnalysis": false
    },

	if _, f := knownClusterNames[c.Name()]; f {
		return c.Name()
	}
	if c.IsPrimary() {
		if c.IsConfig() {
			prefix = "primary"
		} else {
			prefix = "externalistiod"
		}
	} else if c.IsRemote() {
		if c.IsConfig() {
			prefix = "config"
		} else {
			prefix = "remote"
		}
	}

	return fmt.Sprintf("%s-%d", prefix, c.Index)
}

func (m *Multicluster) checkShouldLead(client kubelib.Client, systemNamespace string, stop <-chan struct{}) bool {
	var res bool
	if features.ExternalIstiod {
		b := backoff.NewExponentialBackOff(backoff.DefaultOption())
		ctx, cancel := context.WithCancel(context.Background())
		go func() {
			select {
			case <-stop:
				cancel()
			case <-ctx.Done():

	ClusterName = env.Register("CLUSTER_ID", constants.DefaultClusterName,
		"Defines the cluster and service registry that this Istiod instance belongs to").Get()

	ExternalIstiod = env.Register("EXTERNAL_ISTIOD", false,
		"If this is set to true, one Istiod will control remote clusters including CA.").Get()

	EnableCAServer = env.Register("ENABLE_CA_SERVER", true,

		{"Values.global.centralIstiod", "Values.global.externalIstiod", false},
		{"Values.global.arch", "the affinity of k8s settings", nil},
	}

	failHardSettings := []deprecatedSettings{
		{"Values.grafana.enabled", "the samples/addons/ deployments", false},

    caAddress: ""
    # Configure a remote cluster data plane controlled by an external istiod.
    # When set to true, istiod is not deployed locally and only a subset of the other
    # discovery charts are enabled.
    externalIstiod: true
    # Configure a remote cluster as the config cluster for an external istiod.
    configCluster: false
    # configValidation enables the validation webhook for Istio configuration.
    configValidation: true

    # Configure a remote cluster data plane controlled by an external istiod.
    # When set to true, istiod is not deployed locally and only a subset of the other
    # discovery charts are enabled.
    externalIstiod: false

    # Configure a remote cluster as the config cluster for an external istiod.
    configCluster: false

    # configValidation enables the validation webhook for Istio configuration.