diff --git a/pkg/metricstore/healthcheck.go b/pkg/metricstore/healthcheck.go
index f390749d..cfb4688d 100644
--- a/pkg/metricstore/healthcheck.go
+++ b/pkg/metricstore/healthcheck.go
@@ -11,6 +11,7 @@ import (
 	"slices"
 	"time"
 
+	cclog "github.com/ClusterCockpit/cc-lib/v2/ccLogger"
 	"github.com/ClusterCockpit/cc-lib/v2/schema"
 )
 
@@ -246,6 +247,14 @@ func (m *MemoryStore) HealthCheck(cluster string,
 		degradedCount = len(degradedList)
 		healthyCount = len(expectedMetrics) - (missingCount + degradedCount)
 
+		// Debug log missing and degraded metrics
+		if missingCount > 0 {
+			cclog.ComponentDebug("metricstore", "HealthCheck: node", hostname, "missing metrics:", missingList)
+		}
+		if degradedCount > 0 {
+			cclog.ComponentDebug("metricstore", "HealthCheck: node", hostname, "degraded metrics:", degradedList)
+		}
+
 		// Determine overall health status
 		if missingCount > 0 || degradedCount > 0 {
 			if healthyCount == 0 {