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			Cleanup steps for ingress (#195)
Added cleanup steps and removed the "understanding" section until we have a more full description.
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			@ -131,7 +131,7 @@ to configure ingress behavior.
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   apiVersion: extensions/v1beta1
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   kind: Ingress
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   metadata:
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     name: secured-ingress
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     name: istio-secured-ingress
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     annotations:
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       kubernetes.io/ingress.class: istio
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   spec:
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			@ -161,8 +161,8 @@ to configure ingress behavior.
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    ```
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    ```
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    NAME              HOSTS     ADDRESS                 PORTS     AGE
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    secured-ingress   *         130.211.10.121          80, 443   1d
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    NAME                    HOSTS     ADDRESS                 PORTS     AGE
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    istio-secured-ingress   *         130.211.10.121          80, 443   1d
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    ```
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    ```bash
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			@ -265,11 +265,17 @@ to set a timeout rule on calls to the httpbin service.
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   This time the response appears after
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   3 seconds.  Although _httpbin_ was waiting 5 seconds, Istio cut off the request at 3 seconds.
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## Cleanup
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## Understanding ingress
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1. Follow the steps to remove [httpbin](https://github.com/istio/istio/tree/master/demos/apps/httpbin).
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In the preceding steps we created a service inside the Istio network mesh and exposed it to
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external traffic through ingresses.
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2. Remove the secret, Ingress Resource definitions and Istio rule.
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    ```bash
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    kubectl delete secret ingress-secret
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    kubectl delete ingress istio-ingress istio-secured-ingress 
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    istioctl delete route-rule httpbin-3s-rule 
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    ```
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## What's next
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