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docs: Update Istio tutorial instructions to expose application to out… #4384

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Feb 25, 2022
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docs: Update Istio tutorial instructions to expose application to out… #4384

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docs: Update Istio tutorial instructions to expose application to out…
ashutosh-narkar Feb 25, 2022
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Merge branch 'main' into update-istio-tutorial
srenatus Feb 25, 2022
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32 changes: 19 additions & 13 deletions docs/content/envoy-tutorial-istio.md
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Original file line number Diff line number Diff line change
Expand Up @@ -145,21 +145,27 @@ kubectl apply -f https://raw.githubusercontent.com/istio/istio/master/samples/bo
kubectl apply -f https://raw.githubusercontent.com/istio/istio/master/samples/bookinfo/networking/bookinfo-gateway.yaml
```

### 4. Set the `GATEWAY_URL` environment variable in your shell to the public IP/port of the Istio Ingress gateway
### 4. Set the `SERVICE_HOST` environment variable in your shell to the public IP/port of the Istio Ingress gateway

**minikube**:
Run this command in a new terminal window to start a Minikube tunnel that sends traffic to your Istio Ingress Gateway:

```bash
export INGRESS_PORT=$(kubectl -n istio-system get service istio-ingressgateway -o jsonpath='{.spec.ports[?(@.name=="http2")].nodePort}')
export INGRESS_HOST=$(minikube ip)
export GATEWAY_URL=$INGRESS_HOST:$INGRESS_PORT
echo $GATEWAY_URL
```
minikube tunnel
```

**minikube (example)**:
Check that the Service shows an `EXTERNAL-IP`:

```bash
kubectl -n istio-system get service istio-ingressgateway

NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
istio-ingressgateway LoadBalancer 10.98.42.178 127.0.0.1 15021:32290/TCP,80:30283/TCP,443:32497/TCP,31400:30216/TCP,15443:30690/TCP 5s
```
192.168.99.100:31380

**minikube:**

```bash
export SERVICE_HOST=$(kubectl -n istio-system get service istio-ingressgateway -o jsonpath='{.status.loadBalancer.ingress[0].ip}')
```

For other platforms see the [Istio documentation on determining ingress IP and ports.](https://istio.io/docs/tasks/traffic-management/ingress/#determining-the-ingress-ip-and-ports)
Expand All @@ -170,15 +176,15 @@ For other platforms see the [Istio documentation on determining ingress IP and p
Check that **alice** can access `/productpage` **BUT NOT** `/api/v1/products`.

```bash
curl --user alice:password -i http://$GATEWAY_URL/productpage
curl --user alice:password -i http://$GATEWAY_URL/api/v1/products
curl --user alice:password -i http://$SERVICE_HOST/productpage
curl --user alice:password -i http://$SERVICE_HOST/api/v1/products
```

Check that **bob** can access `/productpage` **AND** `/api/v1/products`.

```bash
curl --user bob:password -i http://$GATEWAY_URL/productpage
curl --user bob:password -i http://$GATEWAY_URL/api/v1/products
curl --user bob:password -i http://$SERVICE_HOST/productpage
curl --user bob:password -i http://$SERVICE_HOST/api/v1/products
```

## Wrap Up
Expand Down