// The number of old history to retain to allow rollback.
  // This is a pointer to distinguish between explicit zero and not specified.
  // Defaults to 10.
  // +optional
  optional int32 revisionHistoryLimit = 6;
}

// DaemonSetStatus represents the current status of a daemon set.
message DaemonSetStatus {
  // The number of nodes that are running at least 1
  // daemon pod and are supposed to run the daemon pod.

  // The number of old history to retain to allow rollback.
  // This is a pointer to distinguish between explicit zero and not specified.
  // Defaults to 10.
  // +optional
  optional int32 revisionHistoryLimit = 6;
}

// DaemonSetStatus represents the current status of a daemon set.
message DaemonSetStatus {
  // The number of nodes that are running at least 1
  // daemon pod and are supposed to run the daemon pod.

	nodesToDaemonPods, err := dsc.getNodesToDaemonPods(ctx, ds, true)
	if err != nil {
		return fmt.Errorf("couldn't get node to daemon pod mapping for daemon set %q: %v", ds.Name, err)
	}

	toKeep := int(*ds.Spec.RevisionHistoryLimit)
	toKill := len(old) - toKeep
	if toKill <= 0 {
		return nil
	}

	// Find all hashes of live pods
	liveHashes := make(map[string]bool)
	for _, pods := range nodesToDaemonPods {