bucketPeerMetricsGroups = []*MetricsGroupV2{
		getHTTPMetrics(MetricsGroupOpts{bucketOnly: true}),
		getBucketTTFBMetric(),
	}

	nodeCollector = newMinioCollectorNode(nodeGroups)
	clusterCollector = newMinioClusterCollector(allMetricsGroups)
	bucketCollector = newMinioBucketCollector(bucketMetricsGroups)
}

// MetricNamespace is top level grouping of metrics to create the metric name.
type MetricNamespace string