Kubernetes prometheus telemetry + functional tests (#566)

added comment on the node selector input.yaml

Signed-off-by: Tullio Sebastiani <tsebasti@redhat.com>

scenarios/arcaflow/cpu-hog/input.yaml

@@ -5,5 +5,9 @@ input_list:
     duration: 1s
     kubeconfig: ''
     namespace: default
-    node_selector:
-      kubernetes.io/hostname: kind-worker2
+    # set the node selector as a key-value pair eg.
+    # node_selector:
+    #  kubernetes.io/hostname: kind-worker2
+    node_selector: {}
+
+

scenarios/arcaflow/io-hog/input.yaml

@@ -5,6 +5,9 @@ input_list:
   io_write_bytes: 10m
   kubeconfig: ''
   namespace: default
+  # set the node selector as a key-value pair eg.
+  # node_selector:
+  #  kubernetes.io/hostname: kind-worker2
   node_selector: {}
   target_pod_folder: /hog-data
   target_pod_volume:

scenarios/arcaflow/memory-hog/input.yaml

@@ -2,10 +2,10 @@ input_list:
 - duration: 30s
   vm_bytes: 10%
   vm_workers: 2
-  node_selector: { }
-  # node selector example
+  # set the node selector as a key-value pair eg.
   # node_selector:
-  #   kubernetes.io/hostname: master
+  #  kubernetes.io/hostname: kind-worker2
+  node_selector: { }
   kubeconfig: ""
   namespace: default