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Update service-traffic-policy.md (#31408) 

* Update service-traffic-policy.md

<h3>What this PR does ?</h3>
Improve documentation.

<h3>Which issue this PR fixes ?</h3>
fixes 31403(Issue).

* Update service-traffic-policy.md

* Update service-traffic-policy.md

* Update service-traffic-policy.md
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Md Sahil 2022-02-01 07:07:53 +05:30 committed by GitHub
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<!-- overview -->
{{< feature-state for_k8s_version="v1.21" state="alpha" >}}
{{< feature-state for_k8s_version="v1.23" state="beta" >}}
_Service Internal Traffic Policy_ enables internal traffic restrictions to only route
internal traffic to endpoints within the node the traffic originated from. The
@ -20,9 +20,9 @@ cluster. This can help to reduce costs and improve performance.
## Using Service Internal Traffic Policy
Once you have enabled the `ServiceInternalTrafficPolicy`
[feature gate](/docs/reference/command-line-tools-reference/feature-gates/),
you can enable an internal-only traffic policy for a
The `ServiceInternalTrafficPolicy` [feature gate](/docs/reference/command-line-tools-reference/feature-gates/)
is a Beta feature and enabled by default.
When the feature is enabled, you can enable the internal-only traffic policy for a
{{< glossary_tooltip text="Services" term_id="service" >}}, by setting its
`.spec.internalTrafficPolicy` to `Local`.
This tells kube-proxy to only use node local endpoints for cluster internal traffic.