"istiocoredns.enabled" "the in-proxy DNS capturing (ISTIO_META_DNS_CAPTURE)"
}}
{{- range $dep, $replace := $deps }}
{{- /* Complex logic to turn the string above into a null-safe traversal like ((.Values.global).certificates */}}
{{- $res := tpl (print "{{" (repeat (split "." $dep | len) "(")  ".Values." (replace "." ")." $dep) ")}}") $}}
{{- if not (eq $res "")}}

defines install time parameters like component and enablement and namespace, and K8s settings like resources, HPA spec etc. in a structured way.
The simplest customization is to turn components on and off. For example, to turn on cni ([samples/cni-on.yaml](samples/cni-on.yaml):

```yaml
apiVersion: install.istio.io/v1alpha1
kind: IstioOperator
spec:
  components:
    cni:
      enabled: true
```

apiVersion: install.istio.io/v1alpha1
kind: IstioOperator
metadata:
  namespace: istio-system
spec:
  hub: gcr.io/istio-testing
  tag: latest

  # Turn on default components: base, pilot, and ingress gateway
  components:
    base:
      enabled: true
    pilot:
      enabled: true
    # Istio Gateway feature
    ingressGateways:
    - name: istio-ingressgateway
      enabled: true
    egressGateways:

		responses, err = queryDebugSynczViaAgents(all, dr, istioNamespace, kubeClient, centralOpts, options)
	} else {
		// Self-administered case.  Find all Istiods in revision using K8s, port-forward and call each in turn
		responses, err = queryEachShard(all, dr, istioNamespace, kubeClient, centralOpts)
	}
	if err != nil {
		if _, ok := err.(ControlPlaneNotFoundError); ok {

  // risky unless you take great care to run this webhook on all hosts
  // which run an apiserver which might need to make calls to this
  // webhook. Such installs are likely to be non-portable, i.e., not easy
  // to turn up in a new cluster.
  //
  // The scheme must be "https"; the URL must begin with "https://".
  //
  // A path is optional, and if present may be any string permissible in

  // risky unless you take great care to run this webhook on all hosts
  // which run an apiserver which might need to make calls to this
  // webhook. Such installs are likely to be non-portable, i.e., not easy
  // to turn up in a new cluster.
  //
  // The scheme must be "https"; the URL must begin with "https://".
  //
  // A path is optional, and if present may be any string permissible in

var (
	colorPrefixes = map[diag.Level]string{
		diag.Info:    "",           // no special color for info messages
		diag.Warning: "\033[33m",   // yellow
		diag.Error:   "\033[1;31m", // bold red
	}
)

// render turns a Message instance into a string with an option of colored bash output
func render(m diag.Message, colorize bool) string {
	return fmt.Sprintf("%s%v%s [%v]%s %s",
		colorPrefix(m, colorize), m.Type.Level(), colorSuffix(colorize),

ingressGateways: - name: istio-ingressgateway enabled: false values: profile: ambient manifests/profiles/default.yaml apiVersion: install.istio.io/v1alpha1 kind: IstioOperator metadata: namespace: istio-system spec: hub: gcr.io/istio-testing tag: latest # Turn on default components: base, pilot, and ingress gateway components: base: enabled: true pilot: enabled: true # Istio Gateway feature ingressGateways: - name: istio-ingressgateway enabled: true egressGateways: - name: istio-egressgateway enabled: false...

          command:
          - pilot-agent
          - wait
  {{- else if $nativeSidecar }}
    {{- /* preStop is called when the pod starts shutdown. Initialize drain. We will get SIGTERM once applications are torn down. */}}
    lifecycle:
      preStop:
        exec:
          command:
          - pilot-agent
          - request

          command:
          - pilot-agent
          - wait
  {{- else if $nativeSidecar }}
    {{- /* preStop is called when the pod starts shutdown. Initialize drain. We will get SIGTERM once applications are torn down. */}}
    lifecycle:
      preStop:
        exec:
          command:
          - pilot-agent
          - request