// with a pod's existing nodeSelector. Any conflicts will cause the pod to
  // be rejected in admission.
  // +optional
  // +mapType=atomic
  map<string, string> nodeSelector = 1;

  // tolerations are appended (excluding duplicates) to pods running with this
  // RuntimeClass during admission, effectively unioning the set of nodes
  // tolerated by the pod and the RuntimeClass.
  // +optional
  // +listType=atomic

  // with a pod's existing nodeSelector. Any conflicts will cause the pod to
  // be rejected in admission.
  // +optional
  // +mapType=atomic
  map<string, string> nodeSelector = 1;

  // tolerations are appended (excluding duplicates) to pods running with this
  // RuntimeClass during admission, effectively unioning the set of nodes
  // tolerated by the pod and the RuntimeClass.
  // +optional
  // +listType=atomic

  // with a pod's existing nodeSelector. Any conflicts will cause the pod to
  // be rejected in admission.
  // +optional
  // +mapType=atomic
  map<string, string> nodeSelector = 1;

  // tolerations are appended (excluding duplicates) to pods running with this
  // RuntimeClass during admission, effectively unioning the set of nodes
  // tolerated by the pod and the RuntimeClass.
  // +optional
  // +listType=atomic

  //     non-intersecting elements in `Y` are appended, retaining their partial order.
  //   - 'map': `X + Y` performs a merge where the array positions of all keys in `X` are preserved but the values
  //     are overwritten by values in `Y` when the key sets of `X` and `Y` intersect. Elements in `Y` with
  //     non-intersecting keys are appended, retaining their partial order.
  // Required.

message PodDNSConfig {
  // A list of DNS name server IP addresses.
  // This will be appended to the base nameservers generated from DNSPolicy.
  // Duplicated nameservers will be removed.
  // +optional
  repeated string nameservers = 1;

  // A list of DNS search domains for host-name lookup.
  // This will be appended to the base search paths generated from DNSPolicy.
  // Duplicated search paths will be removed.