Name query metrics for easier discovery (#7302)

Changes the way query metrics are named to make them easier to search for.

Signed-off-by: Nick Pillitteri <nick.pillitteri@grafana.com>

pkg/querier/stats/query_metrics.go

@@ -41,24 +41,20 @@ type QueryMetrics struct {
 func NewQueryMetrics(reg prometheus.Registerer) *QueryMetrics {
 	m := &QueryMetrics{
 		IngesterChunksDeduplicated: promauto.With(reg).NewCounter(prometheus.CounterOpts{
-			Namespace: "cortex",
-			Name:      "distributor_query_ingester_chunks_deduped_total",
-			Help:      "Number of chunks received from ingesters at query time but discarded as duplicates.",
+			Name: "cortex_distributor_query_ingester_chunks_deduped_total",
+			Help: "Number of chunks received from ingesters at query time but discarded as duplicates.",
 		}),
 		IngesterChunksTotal: promauto.With(reg).NewCounter(prometheus.CounterOpts{
-			Namespace: "cortex",
-			Name:      "distributor_query_ingester_chunks_total",
-			Help:      "Number of chunks received from ingesters at query time, including any chunks discarded as duplicates.",
+			Name: "cortex_distributor_query_ingester_chunks_total",
+			Help: "Number of chunks received from ingesters at query time, including any chunks discarded as duplicates.",
 		}),
 		QueriesRejectedTotal: promauto.With(reg).NewCounterVec(prometheus.CounterOpts{
-			Namespace: "cortex",
-			Name:      "querier_queries_rejected_total",
-			Help:      "Number of queries that were rejected, for example because they exceeded a limit.",
+			Name: "cortex_querier_queries_rejected_total",
+			Help: "Number of queries that were rejected, for example because they exceeded a limit.",
 		}, []string{"reason"}),
 		QueriesExecutedTotal: promauto.With(reg).NewCounterVec(prometheus.CounterOpts{
-			Namespace: "cortex",
-			Name:      "querier_queries_storage_type_total",
-			Help:      "Number of PromQL queries that were executed against a particular storage type.",
+			Name: "cortex_querier_queries_storage_type_total",
+			Help: "Number of PromQL queries that were executed against a particular storage type.",
 		}, []string{"storage"}),
 	}