tagLabel := hook.GetLabels()[IstioTagLabel]
		ri, revPresent := revisions[rev]
		if revPresent {
			if tagLabel != "" {
				ri.Webhooks = append(ri.Webhooks, &MutatingWebhookConfigInfo{
					Name:     hook.Name,
					Revision: rev,
					Tag:      tagLabel,
				})
			}
		} else {
			revisions[rev] = &RevisionDescription{
				IstioOperatorCRs: []*IstioOperatorCRInfo{},

```yaml
meshConfig:
  accessLogFile: /dev/stdout
```

#### Revisions

Control plane revisions allow deploying multiple versions of the control plane in the same cluster.
This allows safe [canary upgrades](https://istio.io/latest/docs/setup/upgrade/canary/)

```yaml
revision: my-revision-name

	}

	// If the user is performing purge but also specified a revision, we should warn
	// that the purge will still remove all resources
	if orArgs.purge && orArgs.revision != "" {
		orArgs.revision = ""
		l.LogAndPrint("Purge remove will remove all Istio operator controller, ignoring the specified revision\n")
	}

	var installed bool
	if orArgs.revision == "default" {

# This service account aggregates reader permissions for the revisions in a given cluster
# Should be used for remote secret creation.
apiVersion: v1
kind: ServiceAccount
  {{- if .Values.global.imagePullSecrets }}
imagePullSecrets:
  {{- range .Values.global.imagePullSecrets }}
  - name: {{ . }}
    {{- end }}
    {{- end }}
metadata:
  name: istio-reader-service-account
  namespace: {{ .Values.global.istioNamespace }}
  labels:

	revision := iop.Spec.Revision
	if revision == "" {
		revision = util.DefaultRevisionName
	}
	icps, err := kubeClient.GetIstioVersions(context.TODO(), ns)
	if err != nil {
		return err
	}
	if len(*icps) != 0 {
		var icpTags []string
		var icpTag string
		// create normalized tags for multiple control plane revisions
		for _, icp := range *icps {

# This service account aggregates reader permissions for the revisions in a given cluster
# Should be used for remote secret creation.
apiVersion: v1
kind: ServiceAccount
  {{- if .Values.global.imagePullSecrets }}
imagePullSecrets:
  {{- range .Values.global.imagePullSecrets }}
  - name: {{ . }}
    {{- end }}
    {{- end }}
metadata:
  name: istio-reader-service-account
  namespace: {{ .Values.global.istioNamespace }}
  labels:

      - label: "User Experience"
      - label: "Developer Infrastructure"
      - label: "Upgrade"
      - label: "Multi Cluster"
      - label: "Virtual Machine"

# Istio base Helm Chart

This chart installs resources shared by all Istio revisions. This includes Istio CRDs.

## Setup Repo Info

```console
helm repo add istio https://istio-release.storage.googleapis.com/charts
helm repo update
```

_See [helm repo](https://helm.sh/docs/helm/helm_repo/) for command documentation._

## Installing the Chart

To install the chart with the release name `istio-base`:

```console

  their projects. It also allows for a certain amount of legacy support into the
  future. Therefore, we should rename this file from pom.xml in the maven-core
  jarfile to pom-4.0.0.xml (and successive revisions to the base pom made to
  accommodate changes in the model will be named accordingly - 4.0.1, 4.0.2, ...).

Minimum Element-Set for a Project POM

   */
  HTTP_1_0("http/1.0"),

  /**
   * A plaintext framing that includes persistent connections.
   *
   * This version of OkHttp implements [RFC 7230][rfc_7230], and tracks revisions to that spec.
   *
   * [rfc_7230]: https://tools.ietf.org/html/rfc7230
   */
  HTTP_1_1("http/1.1"),

  /**
   * Chromium's binary-framed protocol that includes header compression, multiplexing multiple