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Update several CNI related doc. (#10140) 

* Update several CNI doc.

* Update index.md

* Update content/en/docs/setup/platform-setup/gke/index.md

Co-authored-by: craigbox <craigbox@google.com>

Co-authored-by: craigbox <craigbox@google.com>
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Pengyuan Bian 2021-08-04 14:01:25 -07:00 committed by GitHub
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4
content/en/docs/ops/best-practices/security/index.md
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@ -506,10 +506,6 @@ This adds a [requirement](/docs/ops/deployment/requirements/) for the `NET_ADMIN
To reduce privileges granted to pods, Istio offers a [CNI plugin](/docs/setup/additional-setup/cni/) which removes this requirement.
{{< warning >}}
The Istio CNI plugin is currently an alpha feature.
{{< /warning >}}
## Use hardened docker images
Istio's default docker images, including those run by the control plane, gateway, and sidecar proxies, are based on `ubuntu`.

6
content/en/docs/setup/platform-setup/gke/index.md
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@ -37,10 +37,8 @@ Follow these instructions to prepare a GKE cluster for Istio.
{{< /tip >}}
{{< warning >}}
To use the Istio CNI feature, the
[network-policy](https://cloud.google.com/kubernetes-engine/docs/how-to/network-policy)
GKE feature must be enabled in the cluster. Use the `--enable-network-policy` flag in
the `gcloud container clusters create` command.
To use the Istio CNI feature on GKE, please check the [CNI installation guide](/docs/setup/additional-setup/cni/#prerequisites)
for prerequisite cluster configuration steps.
{{< /warning >}}
{{< warning >}}