diff --git a/collectors/health.go b/collectors/health.go
index 0fa06bf..4350f29 100644
--- a/collectors/health.go
+++ b/collectors/health.go
@@ -964,7 +964,7 @@ type cephHealthStats struct {
 	ServiceMap struct {
 		Services struct {
 			RbdMirror struct {
-				Daemons map[string]interface{} `json:"daemons"`
+				Daemons map[string]json.RawMessage `json:"daemons"`
 			} `json:"rbd-mirror"`
 		} `json:"services"`
 	} `json:"servicemap"`
@@ -1307,13 +1307,22 @@ func (c *ClusterHealthCollector) collect(ch chan<- prometheus.Metric) error {
 	c.MgrsActive.Set(float64(activeMgr))
 	c.MgrsNum.Set(float64(activeMgr + len(stats.MgrMap.StandBys)))
 
-	for name := range stats.ServiceMap.Services.RbdMirror.Daemons {
+	for name, data := range stats.ServiceMap.Services.RbdMirror.Daemons {
 		if name == "summary" {
 			continue
 		}
 
-		ch <- prometheus.MustNewConstMetric(
-			c.RbdMirrorUp, prometheus.GaugeValue, 1.0, name)
+		md := struct {
+			Metadata struct {
+				Id string `json:"id"`
+			} `json:"metadata"`
+		}{}
+
+		// Extract id from metadata
+		if err := json.Unmarshal(data, &md); err == nil {
+			ch <- prometheus.MustNewConstMetric(
+				c.RbdMirrorUp, prometheus.GaugeValue, 1.0, md.Metadata.Id)
+		}
 	}
 
 	return nil
diff --git a/collectors/health_test.go b/collectors/health_test.go
index 81d0407..c7b84fb 100644
--- a/collectors/health_test.go
+++ b/collectors/health_test.go
@@ -711,16 +711,23 @@ $ sudo ceph -s
             "rbd-mirror": {
                 "daemons": {
                     "summary": "",
-                    "prod-mon01-block01": {
-                        "addr": "10.78.41.10:0/1272328707",
+                    "681363": {
+                        "start_epoch": 4,
+                        "start_stamp": "2020-09-24 04:27:12.310285",
+                        "addr": "10.39.70.112:0/2856123533",
                         "metadata": {
-                            "arch": "x86_64"
+                            "arch": "x86_64",
+                            "id": "prod-mon01-block01"
                         }
                     },
-                    "prod-mon02-block01": {
-                        "addr": "10.78.41.11:0/2337288266",
+
+                    "681474": {
+                        "start_epoch": 6,
+                        "start_stamp": "2020-09-24 04:28:44.500861",
+                        "addr": "10.39.70.111:0/3132809711",
                         "metadata": {
-                            "arch": "x86_64"
+                            "arch": "x86_64",
+                            "id": "prod-mon02-block01"
                         }
                     }
                 }