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add some clarification to the helm api customization (#6920) 

* add some clarification to the helm api

* address comment

* remove extra part
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Xinnan Wen 2020-03-23 12:58:43 -07:00 committed by GitHub
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content/en/docs/setup/install/istioctl/index.md
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@ -270,7 +270,7 @@ $ istioctl manifest apply -f samples/operator/pilot-k8s.yaml
{{< /text >}}
{{< tip >}}
For backwards compatibility, the previous [Helm installation options](/docs/reference/config/installation-options/)
For backwards compatibility, the previous [Helm installation options](/docs/reference/config/installation-options/), with the exception of Kubernetes resource settings,
are also fully supported. To set them on the command line, prepend the option name with "`values.`".
For example, the following command overrides the `pilot.traceSampling` Helm configuration option:
@ -278,8 +278,11 @@ For example, the following command overrides the `pilot.traceSampling` Helm conf
$ istioctl manifest apply --set values.pilot.traceSampling=0.1
{{< /text >}}
Helm values can also be set in an `IstioOperator` definition as described in
Helm values can also be set in an `IstioOperator` CR (YAML file) as described in
[Customize Istio settings using the Helm API](#customize-istio-settings-using-the-helm-api), below.
If you want to set Kubernetes resource settings, use the `IstioOperator` API as described in
[Customize Kubernetes settings](#customize-kubernetes-settings).
{{< /tip >}}
### Identify an Istio component