diff --git a/daemon-common/cluster.py b/daemon-common/cluster.py
index 224d6eef..6d637cd1 100644
--- a/daemon-common/cluster.py
+++ b/daemon-common/cluster.py
@@ -1106,30 +1106,6 @@ def get_resource_metrics(zkhandler):
             f"pvc_vm_memory_stats_actual{{vm=\"{vm['name']}\"}} {actual_memory}"
         )
 
-    output_lines.append("# HELP pvc_vm_memory_stats_unused PVC VM unused memory")
-    output_lines.append("# TYPE pvc_vm_memory_stats_unused gauge")
-    for vm in vm_data:
-        unused_memory = vm["memory_stats"]["unused"]
-        output_lines.append(
-            f"pvc_vm_memory_stats_unused{{vm=\"{vm['name']}\"}} {unused_memory}"
-        )
-
-    output_lines.append("# HELP pvc_vm_memory_stats_available PVC VM available memory")
-    output_lines.append("# TYPE pvc_vm_memory_stats_available gauge")
-    for vm in vm_data:
-        available_memory = vm["memory_stats"]["available"]
-        output_lines.append(
-            f"pvc_vm_memory_stats_available{{vm=\"{vm['name']}\"}} {available_memory}"
-        )
-
-    output_lines.append("# HELP pvc_vm_memory_stats_usable PVC VM usable memory")
-    output_lines.append("# TYPE pvc_vm_memory_stats_usable gauge")
-    for vm in vm_data:
-        usable_memory = vm["memory_stats"]["usable"]
-        output_lines.append(
-            f"pvc_vm_memory_stats_usable{{vm=\"{vm['name']}\"}} {usable_memory}"
-        )
-
     output_lines.append("# HELP pvc_vm_memory_stats_rss PVC VM RSS memory")
     output_lines.append("# TYPE pvc_vm_memory_stats_rss gauge")
     for vm in vm_data:
@@ -1138,12 +1114,52 @@ def get_resource_metrics(zkhandler):
             f"pvc_vm_memory_stats_rss{{vm=\"{vm['name']}\"}} {rss_memory}"
         )
 
+    output_lines.append("# HELP pvc_vm_memory_stats_unused PVC VM unused memory")
+    output_lines.append("# TYPE pvc_vm_memory_stats_unused gauge")
+    for vm in vm_data:
+        unused_memory = (
+            vm["memory_stats"]["unused"]
+            if vm["memory_stats"].get("unused") is not None
+            else 0
+        )
+        output_lines.append(
+            f"pvc_vm_memory_stats_unused{{vm=\"{vm['name']}\"}} {unused_memory}"
+        )
+
+    output_lines.append("# HELP pvc_vm_memory_stats_available PVC VM available memory")
+    output_lines.append("# TYPE pvc_vm_memory_stats_available gauge")
+    for vm in vm_data:
+        available_memory = (
+            vm["memory_stats"]["available"]
+            if vm["memory_stats"].get("available") is not None
+            else 0
+        )
+        output_lines.append(
+            f"pvc_vm_memory_stats_available{{vm=\"{vm['name']}\"}} {available_memory}"
+        )
+
+    output_lines.append("# HELP pvc_vm_memory_stats_usable PVC VM usable memory")
+    output_lines.append("# TYPE pvc_vm_memory_stats_usable gauge")
+    for vm in vm_data:
+        usable_memory = (
+            vm["memory_stats"]["usable"]
+            if vm["memory_stats"].get("usable") is not None
+            else 0
+        )
+        output_lines.append(
+            f"pvc_vm_memory_stats_usable{{vm=\"{vm['name']}\"}} {usable_memory}"
+        )
+
     output_lines.append(
         "# HELP pvc_vm_memory_stats_disk_caches PVC VM disk cache memory"
     )
     output_lines.append("# TYPE pvc_vm_memory_stats_disk_caches gauge")
     for vm in vm_data:
-        disk_caches_memory = vm["memory_stats"]["disk_caches"]
+        disk_caches_memory = (
+            vm["memory_stats"]["disk_caches"]
+            if vm["memory_stats"].get("disk_caches") is not None
+            else 0
+        )
         output_lines.append(
             f"pvc_vm_memory_stats_disk_caches{{vm=\"{vm['name']}\"}} {disk_caches_memory}"
         )
@@ -1151,7 +1167,11 @@ def get_resource_metrics(zkhandler):
     output_lines.append("# HELP pvc_vm_memory_swap_in PVC VM memory swap in")
     output_lines.append("# TYPE pvc_vm_memory_swap_in gauge")
     for vm in vm_data:
-        swap_in_memory = vm["memory_stats"]["swap_in"]
+        swap_in_memory = (
+            vm["memory_stats"]["swap_in"]
+            if vm["memory_stats"].get("swap_in") is not None
+            else 0
+        )
         output_lines.append(
             f"pvc_vm_memory_stats_swap_in{{vm=\"{vm['name']}\"}} {swap_in_memory}"
         )
@@ -1159,7 +1179,11 @@ def get_resource_metrics(zkhandler):
     output_lines.append("# HELP pvc_vm_memory_swap_out PVC VM memory swap out")
     output_lines.append("# TYPE pvc_vm_memory_swap_out gauge")
     for vm in vm_data:
-        swap_out_memory = vm["memory_stats"]["swap_out"]
+        swap_out_memory = (
+            vm["memory_stats"]["swap_out"]
+            if vm["memory_stats"].get("swap_out") is not None
+            else 0
+        )
         output_lines.append(
             f"pvc_vm_memory_stats_swap_out{{vm=\"{vm['name']}\"}} {swap_out_memory}"
         )
@@ -1167,7 +1191,11 @@ def get_resource_metrics(zkhandler):
     output_lines.append("# HELP pvc_vm_memory_major_fault PVC VM memory major faults")
     output_lines.append("# TYPE pvc_vm_memory_major_fault gauge")
     for vm in vm_data:
-        major_fault_memory = vm["memory_stats"]["major_fault"]
+        major_fault_memory = (
+            vm["memory_stats"]["major_fault"]
+            if vm["memory_stats"].get("major_fault") is not None
+            else 0
+        )
         output_lines.append(
             f"pvc_vm_memory_stats_major_fault{{vm=\"{vm['name']}\"}} {major_fault_memory}"
         )
@@ -1175,7 +1203,11 @@ def get_resource_metrics(zkhandler):
     output_lines.append("# HELP pvc_vm_memory_minor_fault PVC VM memory minor faults")
     output_lines.append("# TYPE pvc_vm_memory_minor_fault gauge")
     for vm in vm_data:
-        minor_fault_memory = vm["memory_stats"]["minor_fault"]
+        minor_fault_memory = (
+            vm["memory_stats"]["minor_fault"]
+            if vm["memory_stats"].get("minor_fault") is not None
+            else 0
+        )
         output_lines.append(
             f"pvc_vm_memory_stats_minor_fault{{vm=\"{vm['name']}\"}} {minor_fault_memory}"
         )
@@ -1185,7 +1217,11 @@ def get_resource_metrics(zkhandler):
     )
     output_lines.append("# TYPE pvc_vm_memory_hugetlb_pgalloc gauge")
     for vm in vm_data:
-        hugetlb_pgalloc_memory = vm["memory_stats"]["hugetlb_pgalloc"]
+        hugetlb_pgalloc_memory = (
+            vm["memory_stats"]["hugetlb_pgalloc"]
+            if vm["memory_stats"].get("hugetlb_pgalloc") is not None
+            else 0
+        )
         output_lines.append(
             f"pvc_vm_memory_stats_hugetlb_pgalloc{{vm=\"{vm['name']}\"}} {hugetlb_pgalloc_memory}"
         )
@@ -1195,7 +1231,11 @@ def get_resource_metrics(zkhandler):
     )
     output_lines.append("# TYPE pvc_vm_memory_hugetlb_pgfail gauge")
     for vm in vm_data:
-        hugetlb_pgfail_memory = vm["memory_stats"]["hugetlb_pgfail"]
+        hugetlb_pgfail_memory = (
+            vm["memory_stats"]["hugetlb_pgfail"]
+            if vm["memory_stats"].get("hugetlb_pgfail") is not None
+            else 0
+        )
         output_lines.append(
             f"pvc_vm_memory_stats_hugetlb_pgfail{{vm=\"{vm['name']}\"}} {hugetlb_pgfail_memory}"
         )