robot-shop/K8s/README.md

# Instana Agent Install

The easiest way to install the Instana agent is with the helm [chart](https://hub.helm.sh/charts/stable/instana-agent). If you really want to do it by hand, template descriptors are available in the official [documentation](https://docs.instana.io/ecosystem/kubernetes/).

# Stan's Robot Shop Install

Install Stan's Robot Shop on to your K8s cluster using the helm chart, see the [README](helm/README.md) for details of the various options.

```shell
$ cd helm
$ helm install --name robot-shop --namespace robot-shop .
```

## Quotas and Scaling

You can apply resource quotas to the namespace where you installed Stan's Robot Shop.

```shell
$ kubectl -n robot-shop apply -f resource-quota.yaml
```

The quotas and usage are shown in the Instana Kubernetes dashboards.

Optinally you can also run the `autoscale.sh` script to configure automatic scaling of the deployments. You will need to edit the script if you did not deploy to the `robot-shop` namespace. Varying the load on the application will cause Kubernetes to scale up/down the various deployments.

## Istio

Stan's Robot Shop will run on Kubernetes with Istio service mesh. Configure Istio ingress.

```shell
$ kubectl -n robot-shop apply -f Istio/gateway.yaml
```

Now use the exposed Istio gateway to access Robot Shop.

```shell
$ kubectl -n istio-system get svc istio-ingressgateway
```

The above will display the IP address of the Istio gateway.

**NOTE** The Instana agent only works with later versions of Istio.