add metric-server.py

code/example-mec-app/metric-server.py

@@ -0,0 +1,41 @@
+from kubernetes import client, config
+
+config.load_kube_config()
+
+
+api = client.CustomObjectsApi()
+
+pod_list = client.CoreV1Api().list_namespaced_pod('default')
+
+for pod in pod_list.items:
+    pod_name = pod.metadata.name
+    pod_namespace = pod.metadata.namespace
+    pod_phase = pod.status.phase
+    pod_node = pod.spec.node_name
+
+    print(f"Pod Name: {pod_name}, Located on Node: {pod_node}, Namespace: {pod_namespace}, Phase: {pod_phase}")
+
+    try:
+        api_response = api.get_namespaced_custom_object(
+            group="metrics.k8s.io",
+            version="v1beta1",
+            namespace=pod_namespace,
+            plural="pods",
+            name=pod_name
+        )
+
+        containers = api_response['containers']
+        if containers:
+            metrics = containers[0]['usage']
+            cpu_usage = metrics['cpu']
+            memory_usage = metrics['memory']
+
+            print(f"CPU Usage: {cpu_usage}")
+            print(f"Memory Usage: {memory_usage}")
+        else:
+            print(f"Metrics not found for pod {pod_name}.")
+        print('-' * 50)
+
+    except Exception as e:
+        print(f"Error fetching metrics for pod {pod_name}: {e}")
+