nodesUp, nodesDown := globalNotificationSys.GetPeerOnlineCount()
	ch <- prometheus.MustNewConstMetric(
		prometheus.NewDesc(
			prometheus.BuildFQName(minioNamespace, "nodes", "online"),
			"Total number of MinIO nodes online",
			nil, nil),
		prometheus.GaugeValue,
		float64(nodesUp),
	)
	ch <- prometheus.MustNewConstMetric(
		prometheus.NewDesc(
			prometheus.BuildFQName(minioNamespace, "nodes", "offline"),

			labelValues := make([]string, 0, len(v.Labels))
			for _, k := range desc.VariableLabels {
				labelValues = append(labelValues, v.Labels[k])
			}
			metrics = append(metrics,
				prometheus.MustNewConstMetric(promDesc, desc.Type.toProm(), v.Value,
					labelValues...))
		}
	}
	return metrics
}

// Set - sets a metric value along with any provided labels. It is used only
// with Gauge and Counter metrics.