diff --git a/osm_mon/collector/vnf_collectors/openstack.py b/osm_mon/collector/vnf_collectors/openstack.py
index be2bdb7..514245b 100644
--- a/osm_mon/collector/vnf_collectors/openstack.py
+++ b/osm_mon/collector/vnf_collectors/openstack.py
@@ -56,6 +56,19 @@
     "cpu_utilization": "cpu",
 }
 
+METRIC_MAPPINGS_FOR_PROMETHEUS_TSBD = {
+    "cpu_utilization": "cpu",
+    "average_memory_utilization": "memory_usage",
+    "disk_read_ops": "disk_device_read_requests",
+    "disk_write_ops": "disk_device_write_requests",
+    "disk_read_bytes": "disk_device_read_bytes",
+    "disk_write_bytes": "disk_device_write_bytes",
+    "packets_in_dropped": "network_incoming_packets_drop",
+    "packets_out_dropped": "network_outgoing_packets_drop",
+    "packets_received": "network_incoming_packets",
+    "packets_sent": "network_outgoing_packets",
+}
+
 # Metrics which have new names in Rocky and higher releases
 METRIC_MAPPINGS_FOR_ROCKY_AND_NEWER_RELEASES = {
     "disk_read_ops": "disk.device.read.requests",
@@ -131,7 +144,7 @@
             if "monitoring-parameter" in vdu:
                 for param in vdu["monitoring-parameter"]:
                     metric_name = param["performance-metric"]
-                    log.debug(f"Using an {type(self.backend)} as backend")
+                    log.info(f"Using an {type(self.backend)} as backend")
                     if type(self.backend) is PrometheusTSBDBackend:
                         openstack_metric_name = self.backend.map_metric(metric_name)
                     else:
@@ -243,14 +256,21 @@
 
 class PrometheusTSBDBackend(OpenstackBackend):
     def __init__(self, vim_account: dict):
-        self.cred = vim_account["prometheus-config"]["prometheus_cred"]
-        self.map = vim_account["prometheus-config"]["prometheus_map"]
-        self.client = self._build_prometheus_client(vim_account)
+        self.map = self._build_map(vim_account)
+        self.cred = vim_account["prometheus-config"].get("prometheus-cred")
+        self.client = self._build_prometheus_client(
+            vim_account["prometheus-config"]["prometheus-url"]
+        )
 
-    def _build_prometheus_client(self, vim_account: dict) -> prometheus_client:
-        url = vim_account["prometheus-config"]["prometheus_url"]
+    def _build_prometheus_client(self, url: str) -> prometheus_client:
         return prometheus_client(url, disable_ssl=True)
 
+    def _build_map(self, vim_account: dict) -> dict:
+        custom_map = METRIC_MAPPINGS_FOR_PROMETHEUS_TSBD
+        if "prometheus-map" in vim_account["prometheus-config"]:
+            custom_map.update(vim_account["prometheus-config"]["prometheus-map"])
+        return custom_map
+
     def collect_metric(
         self, metric_type: MetricType, metric_name: str, resource_id: str
     ):