- Secure master -> node communication ([#11816](https://github.com/kubernetes/kubernetes/issues/11816))
- upgrading master doesn't upgrade kubectl ([#32538](https://github.com/kubernetes/kubernetes/issues/32538))
- Specific error message on failed rolling update issued by older kubectl against 1.4 master ([#32751](https://github.com/kubernetes/kubernetes/issues/32751))

- **Cluster Ops**
  - [alpha] Added ability to create/remove clusters w/highly available (replicated) masters on GCE using kube-up/kube-down scripts. ([docs](http://kubernetes.io/docs/admin/ha-master-gce/)) ([kubernetes/features#48](https://github.com/kubernetes/enhancements/issues/48))

   * <p>Many of the filtered map's methods, such as {@code size()}, iterate across every key/value
   * mapping in the underlying map and determine which satisfy the filter. When a live view is
   * <i>not</i> needed, it may be faster to copy the filtered map and use the copy.
   *
   * <p><b>Warning:</b> {@code keyPredicate} must be <i>consistent with equals</i>, as documented at
   * {@link Predicate#apply}. Do not provide a predicate such as {@code

   * <p>Many of the filtered map's methods, such as {@code size()}, iterate across every key/value
   * mapping in the underlying map and determine which satisfy the filter. When a live view is
   * <i>not</i> needed, it may be faster to copy the filtered map and use the copy.
   *
   * <p><b>Warning:</b> {@code keyPredicate} must be <i>consistent with equals</i>, as documented at
   * {@link Predicate#apply}. Do not provide a predicate such as {@code

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it, so she turned to the Mock Turtle, and said `What else had you
to learn?'

  `Well, there was Mystery,' the Mock Turtle replied, counting
off the subjects on his flappers, `--Mystery, ancient and modern,
with Seaography:  then Drawling--the Drawling-master was an old
conger-eel, that used to come once a week:  HE taught us
Drawling, Stretching, and Fainting in Coils.'

				return
			}
			w.(http.Flusher).Flush()
		case <-ctx.Done():
			return
		}
	}
}

// KMSCreateKeyHandler - POST /minio/admin/v3/kms/key/create?key-id=<master-key-id>
func (a adminAPIHandlers) KMSCreateKeyHandler(w http.ResponseWriter, r *http.Request) {
	ctx := r.Context()

	objectAPI, _ := validateAdminReq(ctx, w, r, policy.KMSCreateKeyAdminAction)

		MTime:             dobj.DeleteMarkerMTime.Time,
		DeleteReplication: drs,
		Versioned:         globalBucketVersioningSys.PrefixEnabled(bucket, dobj.ObjectName),
		// Objects matching prefixes should not leave delete markers,
		// dramatically reduces namespace pollution while keeping the
		// benefits of replication, make sure to apply version suspension
		// only at bucket level instead.

func getClusterUsageDeleteMarkersTotalMD() MetricDescription {
	return MetricDescription{
		Namespace: clusterMetricNamespace,
		Subsystem: usageSubsystem,
		Name:      deleteMarkerTotal,
		Help:      "Total number of delete markers in a cluster",
		Type:      gaugeMetric,
	}
}

func getBucketUsageObjectsTotalMD() MetricDescription {
	return MetricDescription{
		Namespace: bucketMetricNamespace,
		Subsystem: usageSubsystem,

          "interval": "1m",
          "intervalFactor": 2,
          "legendFormat": "{{bucket}}",
          "refId": "A"
        }
      ],
      "title": "Delete Markers",
      "type": "timeseries"
    },
    {
      "datasource": {
        "type": "prometheus",
        "uid": "Prometheus"
      },
      "fieldConfig": {
        "defaults": {