configMap:
                name: my-config-map
              name: my-volume-name
          - path: 'spec.template.spec.containers[0].volumeMounts[100]'
            value:
              mountPath: /mnt/path1
              name: my-volume-name
        - kind: Service
          name: istio-pilot
          patches:
          - path: spec.ports.[name:grpc-xds].port
            value: 15099 # OVERRIDDEN

`istioctl kube-inject` or the automatic sidecar injector are used to select the environment.
In the case of the sidecar injector, the namespace label `istio-env: <NAME_OF_ENV>` is used instead
of the conventional `istio-injected: true`. The name of the environment is defined as the namespace
where the corresponding control plane components (config, discovery, auto-injection) are running.

## Installing the Chart

Before installing, ensure CRDs are installed in the cluster (from the `istio/base` chart).

To install the chart with the release name `istiod`:

```console
kubectl create namespace istio-system
helm install istiod istio/istiod --namespace istio-system
```

## Uninstalling the Chart

To uninstall/delete the `istiod` deployment:

helm repo update
```

_See [helm repo](https://helm.sh/docs/helm/helm_repo/) for command documentation._

## Installing the Chart

To install the chart with the release name `istio-cni`:

```console
helm install istio-cni istio/cni -n kube-system
```

For a smooth migration, the resource names and `Deployment.spec.selector` labels must match.

If you install with `helm install istio-gateway istio/gateway`, resources will be named `istio-gateway` and the `selector` labels set to:

```yaml
app: istio-gateway
istio: gateway # the release name with leading istio- prefix stripped
```