value: "istio-sidecar-injector-istio-system"
        - name: VALIDATION_WEBHOOK_CONFIG_NAME
          value: "istio-istio-system"
        - name: EXTERNAL_ISTIOD
          value: "true"
        - name: SHARED_MESH_CONFIG
          value: istio
    ingressGateways:
    - name: istio-ingressgateway
      enabled: false
    egressGateways:
    - name: istio-egressgateway
      enabled: false
  values:
    global:

// - use the mounted file, if it exists.
// - use istio-REVISION if k8s is enabled
// - fallback to default
//
// If the 'SHARED_MESH_CONFIG' env is set (experimental feature in 1.10):
// - if a file exist, load it - will be merged
// - if istio-REVISION exists, will be used, even if the file is present.
// - the SHARED_MESH_CONFIG config map will also be loaded and merged.

	flag.StringVar(&settingsFromCommandline.SharedMeshConfigName, "istio.test.kube.sharedMeshConfigName",
		settingsFromCommandline.SharedMeshConfigName,
		`Specifies the name of the SHARED_MESH_CONFIG defined and created by the user upon installing Istio.
		Should only be set when istio.test.kube.userSharedMeshConfig=true and istio.test.kube.deploy=false.`)

			"These checks are extremely expensive, so this should be used only for testing, not production.",
	).Get()

	SharedMeshConfig = env.Register("SHARED_MESH_CONFIG", "",
		"Additional config map to load for shared MeshConfig settings. The standard mesh config will take precedence.").Get()

	MultiRootMesh = env.Register("ISTIO_MULTIROOT_MESH", false,

	// This field should only be set when DeployIstio is false
	EgressGatewayIstioLabel string

	// SharedMeshConfigName is the name of the user's local ConfigMap to be patched, which the user sets as the SHARED_MESH_CONFIG pilot env variable
	// upon installing Istio.
	// This field should only be set when DeployIstio is false.
	SharedMeshConfigName string
}

func (c *Config) OverridesYAML(s *resource.Settings) string {

#### Mesh Config

Mesh Config controller is a pretty simple controller, reading from `ConfigMap`(s) (multiple if `SHARED_MESH_CONFIG` is used), processing and merging these into a the typed `MeshConfig`. It then exposes this over a simple `mesh.Watcher`, which just exposes a way to access the current `MeshConfig` and get notified when it changes.

#### Ingress