try block

circle/vm/models/instance.py

@@ -494,7 +494,10 @@ class Instance(AclBase, VirtualMachineDescModel, StatusModel, OperatedMixin,
         import requests as req
         if self.hookurl:
             logger.info("notify remote host (callhookurl): " + str(self.hookurl))
+            try:
                 req.post(url=str(self.hookurl))
+            except:
+                logger.info("Error when call hookurl: " + str(self.hookurl))
             
         
     def _update_status(self):