[k8s] continue on finding router pod

k8s/k8s-router.py

@@ -49,17 +49,16 @@ v1 = client.CoreV1Api()
 pods = v1.list_pod_for_all_namespaces(watch=False,
                                      label_selector="app.kubernetes.io/component=bird")
 
-print("Number of pods: " + str(len(pods.items)))
-for i in pods.items:
-    pod=i.metadata.name
+num_pods = len(pods.items)
+print("Number of pods: " + str(num_pods))
+if not num_pods == 1:
+    print(f"There should be exactly 1 matching pod - there are {num_pods} pods")
+    sys.exit(1)
+
+pod=pods.items[0].metadata.name
 print(f"Pod: {pod}")
 
 os.environ["KUBECONFIG"] = k8sconfig
 
 cmd = f"kubectl exec -ti {pod} -c bird -- sh"
 p = subprocess.run(cmd, shell=True)
-
-#POD=$(kubectl -n rook-ceph get pods \
-#        -l app=rook-ceph-tools --output=jsonpath={.items..metadata.name})
-#
-#kubectl -n rook-ceph exec -ti $POD -- bash