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knative services are private by default (knative#5512)
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Signed-off-by: Paul S. Schweigert <paul@paulschweigert.com>
Co-authored-by: Paul S. Schweigert <paul@paulschweigert.com>
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knative-prow-robot and psschwei authored Mar 24, 2023
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19 changes: 8 additions & 11 deletions docs/serving/services/private-services.md
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# Configuring private Services

By default, Services deployed through Knative are published to an external IP
address, making them public Services on a public IP address and with a public URL.
By default, Services deployed through Knative use the `.svc.cluster.local` domain, meaning
they are private and thus do not have a public IP address or a public URL.

Knative provides two ways to enable private services which are only available
inside the cluster:
In order to make Knative Services public (with a public IP address and public URL) by default,
[configure a domain name](../using-a-custom-domain.md) for the Service.
This can be done for a single Service or for all Services on a cluster.

1. To make all Knative Services private, change the default domain to
`svc.cluster.local` by [editing the `config-domain` ConfigMap](https://github.com/knative/serving/blob/main/config/core/configmaps/domain.yaml). This changes all Services deployed through Knative to only be published to the cluster.
1. To make an individual Service private, the Service or Route can be
labelled with `networking.knative.dev/visibility=cluster-local` so that it is not published to the external gateway.

## Using the cluster-local label
## Making individual services private

To configure a Knative Service so that it is only available on the cluster-local network, and not on the public internet, you can apply the
`networking.knative.dev/visibility=cluster-local` label to a Knative Service, a route or a Kubernetes Service object.
To make an individual Service private, the Service or Route can be labelled with
`networking.knative.dev/visibility=cluster-local` so that it is not published to the external gateway.

- To label a Knative Service:

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4 changes: 2 additions & 2 deletions docs/serving/using-a-custom-domain.md
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# Configuring domain names

You can customize the domain of an individual Knative Service, or set a global default domain for all Services created on a cluster. The fully qualified domain name for a route by default is `{route}.{namespace}.example.com`.
You can customize the domain of an individual Knative Service, or set a global default domain for all Services created on a cluster. The fully qualified domain name for a route by default is `{route}.{namespace}.svc.cluster.local`.

## Configuring a domain for a single Knative Service

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kubectl edit configmap config-domain -n knative-serving
```

1. Edit the file to replace `example.com` with the domain you want to use, then remove the `_example` key and save your changes. In this example, `knative.dev` is configured as the domain for all routes:
1. Edit the file to replace `svc.cluster.local` with the domain you want to use, then remove the `_example` key and save your changes. In this example, `knative.dev` is configured as the domain for all routes:

```yaml
apiVersion: v1
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