repeated RuntimeClass items = 2;
}

// Scheduling specifies the scheduling constraints for nodes supporting a
// RuntimeClass.
message Scheduling {
  // nodeSelector lists labels that must be present on nodes that support this
  // RuntimeClass. Pods using this RuntimeClass can only be scheduled to a
  // node matched by this selector. The RuntimeClass nodeSelector is merged

  // https://git.k8s.io/enhancements/keps/sig-node/688-pod-overhead/README.md
  // +optional
  optional Overhead overhead = 2;

  // scheduling holds the scheduling constraints to ensure that pods running
  // with this RuntimeClass are scheduled to nodes that support it.
  // If scheduling is nil, this RuntimeClass is assumed to be supported by all
  // nodes.
  // +optional
  optional Scheduling scheduling = 3;
}

  // +optional
  optional k8s.io.apimachinery.pkg.apis.meta.v1.ObjectMeta metadata = 1;

  // nodeTopology defines which nodes have access to the storage
  // for which capacity was reported. If not set, the storage is
  // not accessible from any node in the cluster. If empty, the
  // storage is accessible from all nodes. This field is
  // immutable.
  //
  // +optional

// An API server instance reports the version it can decode and the version it
// encodes objects to when persisting objects in the backend.
message ServerStorageVersion {
  // The ID of the reporting API server.
  optional string apiServerID = 1;

  // The API server encodes the object to this version when persisting it in
  // the backend (e.g., etcd).
  optional string encodingVersion = 2;

  // https://git.k8s.io/enhancements/keps/sig-node/688-pod-overhead/README.md
  // +optional
  optional Overhead overhead = 3;

  // scheduling holds the scheduling constraints to ensure that pods running
  // with this RuntimeClass are scheduled to nodes that support it.
  // If scheduling is nil, this RuntimeClass is assumed to be supported by all
  // nodes.
  // +optional
  optional Scheduling scheduling = 4;
}

// ClusterCIDR represents a single configuration for per-Node Pod CIDR
// allocations when the MultiCIDRRangeAllocator is enabled (see the config for
// kube-controller-manager).  A cluster may have any number of ClusterCIDR
// resources, all of which will be considered when allocating a CIDR for a
// Node.  A ClusterCIDR is eligible to be used for a given Node when the node
// selector matches the node in question and has free CIDRs to allocate.  In