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add default tabs for install dns and extensions (#3260) 

Closes #3259
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Carlos Santana 2021-02-24 12:48:47 -05:00 committed by GitHub
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docs/install/any-kubernetes-cluster.md
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@ -287,10 +287,12 @@ The following commands install Kourier and enable its Knative integration.
<!-- This indentation is important for things to render properly. -->
{{< tabs name="serving_dns" >}} {{% tab name="Magic DNS (xip.io)" %}} We ship
a simple Kubernetes Job called "default domain" that will (see caveats)
configure Knative Serving to use <a href="http://xip.io">xip.io</a> as the
default DNS suffix.
{{< tabs name="serving_dns" default="Magic DNS (xip.io)" >}}
{{% tab name="Magic DNS (xip.io)" %}}
We ship a simple Kubernetes Job called "default domain" that will (see caveats)
configure Knative Serving to use <a href="http://xip.io">xip.io</a> as the
default DNS suffix.
```bash
kubectl apply --filename {{< artifact repo="serving" file="serving-default-domain.yaml" >}}
@ -298,9 +300,13 @@ kubectl apply --filename {{< artifact repo="serving" file="serving-default-domai
**Caveat**: This will only work if the cluster LoadBalancer service exposes an
IPv4 address or hostname, so it will not work with IPv6 clusters or local setups
like Minikube. For these, see "Real DNS" or "Temporary DNS". {{< /tab >}}
like Minikube. For these, see "Real DNS" or "Temporary DNS".
{{% tab name="Real DNS" %}} To configure DNS for Knative, take the External IP
{{< /tab >}}
{{% tab name="Real DNS" %}}
To configure DNS for Knative, take the External IP
or CNAME from setting up networking, and configure it with your DNS provider as
follows:
@ -332,7 +338,9 @@ kubectl patch configmap/config-domain \
{{< /tab >}}
{{% tab name="Temporary DNS" %}} If you are using `curl` to access the sample
{{% tab name="Temporary DNS" %}}
If you are using `curl` to access the sample
applications, or your own Knative app, and are unable to use the "Magic DNS
(xip.io)" or "Real DNS" methods, there is a temporary approach. This is useful
for those who wish to evaluate Knative without altering their DNS configuration,
@ -374,9 +382,7 @@ To access your application using `curl` using this method:
Refer to the "Real DNS" method for a permanent solution.
{{< /tab >}}
{{< /tabs >}}
{{< /tab >}} {{< /tabs >}}
1. Monitor the Knative components until all of the components show a `STATUS` of
`Running` or `Completed`:
@ -389,7 +395,9 @@ At this point, you have a basic installation of Knative Serving!
### Optional Serving extensions
{{< tabs name="serving_extensions" >}} {{% tab name="HPA autoscaling" %}}
{{< tabs name="serving_extensions" default="TLS via HTTP01" >}}
{{% tab name="HPA autoscaling" %}}
Knative also supports the use of the Kubernetes Horizontal Pod Autoscaler (HPA)
for driving autoscaling decisions. The following command will install the