When fetching certificates, ztunnel will authenticate to the CA with its own identity, but request the identity of another workload.
Critically, the CA must enforce that the ztunnel has permission to request that identity.
Requests for identities not running on the node are rejected.
This is critical to ensure that a compromised node does not compromise the entire mesh.

  // Required.
  optional string name = 1;

  // ClientConfig defines how to communicate with the hook.
  // Required
  optional WebhookClientConfig clientConfig = 2;

  // Rules describes what operations on what resources/subresources the webhook cares about.
  // The webhook cares about an operation if it matches _any_ Rule.
  // However, in order to prevent ValidatingAdmissionWebhooks and MutatingAdmissionWebhooks

  // scope specifies the scope of this rule.
  // Valid values are "Cluster", "Namespaced", and "*"
  // "Cluster" means that only cluster-scoped resources will match this rule.
  // Namespace API objects are cluster-scoped.
  // "Namespaced" means that only namespaced resources will match this rule.
  // "*" means that there are no scope restrictions.
  // Subresources match the scope of their parent resource.
  // Default is "*".
  //

  // DriverName defines the name of the dynamic resource driver that is
  // used for allocation of a ResourceClaim that uses this class.
  //
  // Resource drivers have a unique name in forward domain order
  // (acme.example.com).
  optional string driverName = 2;

  // ParametersRef references an arbitrary separate object that may hold
  // parameters that will be used by the driver when allocating a

// are responsible for serializing and deserializing the objects that contain
// their internal state.
// Once a ControllerRevision has been successfully created, it can not be updated.
// The API Server will fail validation of all requests that attempt to mutate
// the Data field. ControllerRevisions may, however, be deleted. Note that, due to its use by both

	}
	// Helper function; checks that container exit code matches filter
	matchExitCode := func(state *corev1.ContainerStateTerminated) bool {
		// If we are filtering on init container exit code and the termination message does not match, exit
		if ec := c.cfg.InitExitCode; ec == 0 || ec == int(state.ExitCode) {
			return true
		}
		return false
	}

	// Only check pods that have the sidecar annotation; the rest can be

  // `limitResponse` indicates what to do with requests that can not be executed right now
  optional LimitResponse limitResponse = 2;

  // `lendablePercent` prescribes the fraction of the level's NominalCL that
  // can be borrowed by other priority levels. The value of this
  // field must be between 0 and 100, inclusive, and it defaults to 0.
  // The number of seats that other levels can borrow from this level, known

  // `limitResponse` indicates what to do with requests that can not be executed right now
  optional LimitResponse limitResponse = 2;

  // `lendablePercent` prescribes the fraction of the level's NominalCL that
  // can be borrowed by other priority levels. The value of this
  // field must be between 0 and 100, inclusive, and it defaults to 0.
  // The number of seats that other levels can borrow from this level, known

  // If you specify "User" but not "Group", then is it interpreted as "What if User were not a member of any groups
  // +optional
  optional string user = 3;

  // Groups is the groups you're testing for.
  // +optional
  repeated string group = 4;

  // Extra corresponds to the user.Info.GetExtra() method from the authenticator.  Since that is input to the authorizer
  // it needs a reflection here.
  // +optional

  # Determine what CNI to install
  case "${KUBERNETES_CNI:-}" in 

    "calico")
      echo "Installing Calico CNI"
      install_calico "" "$(dirname "$CONFIG")"
      ;;

    "")
      # perfectly fine, we accepted the default KinD CNI
      ;;

    *)
      # we don't know what to do but we've got no CNI, return non-zero