check_default_cluster_yaml

  # Delete any previous KinD cluster
  echo "Deleting previous KinD cluster with name=${NAME}"
  if ! (kind delete cluster --name="${NAME}" -v9) > /dev/null; then
    echo "No existing kind cluster with name ${NAME}. Continue..."
  fi

  # explicitly disable shellcheck since we actually want $NAME to expand now
  # shellcheck disable=SC2064
  if [[ "${CLEANUP}" == "true" ]]; then

  //
  // 'object' - The object from the incoming request. The value is null for DELETE requests.
  // 'oldObject' - The existing object. The value is null for CREATE requests.
  // 'request' - Attributes of the admission request(/pkg/apis/admission/types.go#AdmissionRequest).

label foo: bar # Add the existing custom selector label ``` #### Migrating an existing Helm release An existing helm release can be `helm upgrade`d to this chart by using the same release name. For example, if a previous installation was done like: ```console helm install istio-ingress manifests/charts/gateways/istio-ingress -n istio-system ``` It could be upgraded with ```console helm upgrade istio-ingress manifests/charts/gateway -n istio-system --set name=istio-ingressgateway --set labels.app=istio-ingressgateway...

		newMap = existingMap
		plugins, err := util.GetPlugins(newMap)
		if err != nil {
			return nil, fmt.Errorf("existing CNI config: %v", err)
		}

		for i, rawPlugin := range plugins {
			plugin, err := util.GetPlugin(rawPlugin)
			if err != nil {
				return nil, fmt.Errorf("existing CNI plugin: %v", err)
			}
			if plugin["type"] == "istio-cni" {
				plugins = append(plugins[:i], plugins[i+1:]...)
				break

func NetnsSet(n NetnsFd) error {
	return errors.New("not implemented")
}

func OpenNetns(nspath string) (NetnsCloser, error) {
	return nil, errors.New("not implemented")
}

// inspired by netns.Do() but with an existing fd.
func NetnsDo(fdable NetnsFd, toRun func() error) error {
	return errors.New("not implemented")

// sysexits to signify some error running istioctl, and use 79-125 as custom
// error codes for other info that we'd like to use to pass info on.
const (
	ExitUnknownError   = 1 // for compatibility with existing exit code
	ExitIncorrectUsage = 64
	ExitDataError      = 65 // some format error with input data

	// below here are non-zero exit codes that don't indicate an error with istioctl itself

	}

	resolvedAddr, err := net.ResolveUnixAddr("unixpacket", addr)
	if err != nil {
		return nil, fmt.Errorf("failed to resolve unix addr: %w", err)
	}
	// remove potentially existing address
	// Remove unix socket before use, if one is leftover from previous CNI restart
	if err := os.Remove(addr); err != nil && !os.IsNotExist(err) {
		// Anything other than "file not found" is an error.

  // +optional
  optional string volumeMode = 6;

  // dataSource field can be used to specify either:
  // * An existing VolumeSnapshot object (snapshot.storage.k8s.io/VolumeSnapshot)
  // * An existing PVC (PersistentVolumeClaim)
  // If the provisioner or an external controller can support the specified data source,

  repeated CSINode items = 2;
}

// CSINodeSpec holds information about the specification of all CSI drivers installed on a node
message CSINodeSpec {
  // drivers is a list of information of all CSI Drivers existing on a node.
  // If all drivers in the list are uninstalled, this can become empty.
  // +patchMergeKey=name
  // +patchStrategy=merge
  repeated CSINodeDriver drivers = 1;
}

  // More info: https://kubernetes.io/docs/concepts/workloads/controllers/replicationcontroller#pod-template
  optional k8s.io.api.core.v1.PodTemplateSpec template = 2;

  // An update strategy to replace existing DaemonSet pods with new pods.
  // +optional
  optional DaemonSetUpdateStrategy updateStrategy = 3;

  // The minimum number of seconds for which a newly created DaemonSet pod should