added exception when cluster.fqdn missing

src/ops/cli/helmfile.py

@@ -11,7 +11,10 @@
 
 import logging
 import os
+import six
+import sys
 
+from kubernetes import config
 from ops.cli.parser import SubParserConfig
 from ops.hierarchical.composition_config_generator import CompositionConfigGenerator
 
@@ -87,6 +90,25 @@ def setup_kube_config(self, data):
             file_location = self.generate_eks_kube_config(
                 cluster_name, aws_profile, region)
             os.environ['KUBECONFIG'] = file_location
+        else:
+            logger.info('cluster.fqdn key missing in cluster definition'
+                        '\n unable to generate EKS kubeconfig\n '
+                        'looking for system kubernetes context')
+
+            try:
+                contexts, active_context = config.list_kube_config_contexts()
+            except Exception as ex:
+                logger.error('could not find system kubeconfig context')
+                logger.error(ex)
+                sys.exit()
+
+            logger.info('current default context is:\n %s '
+                        '\n do you want to proceed with this context?',
+                        active_context)
+            answer = six.moves.input("Only 'yes' will be accepted to approve.\n Enter a value:")
+            if answer != "yes":
+                sys.exit()
+
 
     def generate_eks_kube_config(self, cluster_name, aws_profile, region):
         file_location = self.get_tmp_file()