cmd := &cobra.Command{
		Use:   "generate <revision-tag>",
		Short: "Generate configuration for a revision tag to stdout",
		Long: `Create a revision tag and output to the command's stdout. Tag an Istio control plane revision for use with namespace istio.io/rev
injection labels.`,
		Example: `  # Create a revision tag from the "1-8-0" revision
  istioctl tag generate prod --revision 1-8-0 > tag.yaml

  # Apply the tag to cluster

				tc.numWebhooks, len(wh.Webhooks))
		}
		tag, exists := wh.ObjectMeta.Labels[IstioTagLabel]
		if !exists {
			t.Errorf("expected tag webhook to have %s label, did not find", IstioTagLabel)
		}
		if tag != tc.tagName {
			t.Errorf("expected tag webhook to have istio.io/tag=%s, found %s instead", tc.tagName, tag)
		}

		// ensure all webhooks have the correct client config

					warnMarker, icpTag, tag)
			} else {
				p.Printf("%s Istio is being downgraded from %s to %s.\n"+revisionWarning+check,
					warnMarker, icpTag, tag)
			}
		}
	}
	return nil
}

// GetTagVersion returns istio tag version
func GetTagVersion(tagInfo string) (string, error) {
	if pkgversion.IsVersionString(tagInfo) {
		tagInfo = pkgversion.TagToVersionStringGrace(tagInfo)
	}

HUBS ?= $(HUB)

# If tag not explicitly set in users' .istiorc.mk or command line, default to the git sha.
TAG ?= $(shell git rev-parse --verify HEAD)
ifeq ($(TAG),)
  $(error "TAG cannot be empty")
endif

PULL_POLICY ?= IfNotPresent
ifeq ($(TAG),latest)
  PULL_POLICY = Always
endif
ifeq ($(PULL_POLICY),)

    autoscaleMin: 1
    autoscaleMax: 5
    autoscaleBehavior: {}
    replicaCount: 1
    rollingMaxSurge: 100%
    rollingMaxUnavailable: 25%

    hub: ""
    tag: ""
    variant: ""

    # Can be a full hub/image:tag
    image: pilot
    traceSampling: 1.0

    # Resources for a small pilot install
    resources:
      requests:
        cpu: 500m
        memory: 2048Mi

{{- if contains "/" .Values.global.proxy.image }}
          image: "{{ .Values.global.proxy.image }}"
{{- else }}
          image: "{{ .Values.global.hub }}/{{ .Values.global.proxy.image | default "proxyv2" }}:{{ .Values.global.tag }}{{with (.Values.global.proxy.variant | default .Values.global.variant)}}-{{.}}{{end}}"
{{- end }}
{{- if .Values.global.imagePullPolicy }}
          imagePullPolicy: {{ .Values.global.imagePullPolicy }}
{{- end }}

```bash
HUB=docker.io/<your-account> TAG=latest make docker.operator
```

This builds the controller binary and docker file, and pushes the image to the specified hub with the `latest` tag.
Once the images are pushed, configure kubectl to point to your cluster and install the controller.

Install the controller manifest:

```bash
istioctl operator init --hub docker.io/<your-account> --tag latest
kubectl create ns istio-system

		watchedNamespaces: constants.IstioSystemNamespace,
		operatorNamespace: operatorDefaultNamespace,
		// placeholders, since the fake API server does not actually pull images and create pods.
		hub: "fake hub",
		tag: "fake tag",
	}

	_, mstr, err := renderOperatorManifest(nil, ocArgs)
	if err != nil {
		return err
	}
	if err := applyWithReconciler(reconciler, mstr); err != nil {
		return err
	}

	return nil

	webhooks, err := client.Kube().AdmissionregistrationV1().MutatingWebhookConfigurations().List(context.Background(), metav1.ListOptions{
		LabelSelector: fmt.Sprintf("%s=%s,!istio.io/tag", label.IoIstioRev.Name, client.Revision()),
	})
	if err != nil {
		return nil, err
	}
	for _, whc := range webhooks.Items {
		for _, wh := range whc.Webhooks {
			if wh.ClientConfig.URL != nil {

          "datasource": {
            "type": "prometheus",
            "uid": "${datasource}"
          },
          "expr": "sum(istio_build) by (component, tag)",
          "format": "time_series",
          "intervalFactor": 1,
          "legendFormat": "{{ component }}: {{ tag }}",
          "refId": "A"
        }
      ],
      "title": "Istio Components by Version",
      "type": "timeseries"
    },
    {