Changes:

- Default value for management interface removed as
      'juju-br0' has been changed to 'br-eth0' in Juju 2.0
    - Updated get_mgmt_interface method

config.yaml

@@ -17,7 +17,6 @@ options:
     description: Public SSH key of PLUMgrid LCM which is running PG-Tools.
   mgmt-interface:
     type: string
-    default: 'juju-br0'
     description: The interface connected to PLUMgrid Managment network.
   fabric-interfaces:
     default: 'MANAGEMENT'

hooks/pg_dir_hooks.py

@@ -166,6 +166,9 @@ def start():
                 break
             count += 1
             time.sleep(15)
+        if count == 10:
+            raise ValueError("Error occurred while posting plumgrid license"
+                             "key. Please check plumgrid services.")
 
 
 @hooks.hook('upgrade-charm')

hooks/pg_dir_utils.py

@@ -222,7 +222,9 @@ def get_mgmt_interface():
     Returns the managment interface.
     '''
     mgmt_interface = config('mgmt-interface')
-    if interface_exists(mgmt_interface):
+    if not mgmt_interface:
+        return get_iface_from_addr(unit_get('private-address'))
+    elif interface_exists(mgmt_interface):
         return mgmt_interface
     else:
         log('Provided managment interface %s does not exist'