diff --git a/vimconn_openstack.py b/vimconn_openstack.py
index 96d89e3..0cd9b19 100644
--- a/vimconn_openstack.py
+++ b/vimconn_openstack.py
@@ -33,6 +33,7 @@
 import logging
 import netaddr
 import time
+import yaml
 
 from novaclient import client as nClient_v2, exceptions as nvExceptions, api_versions as APIVersion
 import keystoneclient.v2_0.client as ksClient_v2
@@ -736,26 +737,55 @@
             security_groups   = self.config.get('security_groups')
             if type(security_groups) is str:
                 security_groups = ( security_groups, )
+            #cloud config
+            userdata=None
+            config_drive = None
             if isinstance(cloud_config, dict):
-                userdata="#cloud-config\nusers:\n"
-                #default user
-                if "key-pairs" in cloud_config:
-                    userdata += "  - default:\n    ssh-authorized-keys:\n"
-                    for key in cloud_config["key-pairs"]:
-                        userdata += "      - '{key}'\n".format(key=key)
-                for user in cloud_config.get("users",[]):
-                    userdata += "  - name: {name}\n    sudo: ALL=(ALL) NOPASSWD:ALL\n".format(name=user["name"])
-                    if "user-info" in user:
-                        userdata += "    gecos: {}'\n".format(user["user-info"])
-                    if user.get("key-pairs"):
-                        userdata += "    ssh-authorized-keys:\n"
-                        for key in user["key-pairs"]:
-                            userdata += "      - '{key}'\n".format(key=key)
+                if cloud_config.get("user-data"):
+                    userdata=cloud_config["user-data"]
+                if cloud_config.get("boot-data-drive") != None:
+                    config_drive = cloud_config["boot-data-drive"]
+                if cloud_config.get("config-files") or cloud_config.get("users") or cloud_config.get("key-pairs"):
+                    if userdata:
+                        raise vimconn.vimconnConflictException("Cloud-config cannot contain both 'userdata' and 'config-files'/'users'/'key-pairs'")
+                    userdata_dict={}
+                    #default user
+                    if cloud_config.get("key-pairs"):
+                        userdata_dict["ssh-authorized-keys"] = cloud_config["key-pairs"]
+                        userdata_dict["users"] = [{"default": None, "ssh-authorized-keys": cloud_config["key-pairs"] }]
+                    if cloud_config.get("users"):
+                        if "users" not in cloud_config:
+                            userdata_dict["users"] = [ "default" ]
+                        for user in cloud_config["users"]:
+                            user_info = {
+                                "name" : user["name"],
+                                "sudo": "ALL = (ALL)NOPASSWD:ALL"
+                            }
+                            if "user-info" in user:
+                                user_info["gecos"] = user["user-info"]
+                            if user.get("key-pairs"):
+                                user_info["ssh-authorized-keys"] = user["key-pairs"]
+                            userdata_dict["users"].append(user_info)
+
+                    if cloud_config.get("config-files"):
+                        userdata_dict["write_files"] = []
+                        for file in cloud_config["config-files"]:
+                            file_info = {
+                                "path" : file["dest"],
+                                "content": file["content"]
+                            }
+                            if file.get("encoding"):
+                                file_info["encoding"] = file["encoding"]
+                            if file.get("permissions"):
+                                file_info["permissions"] = file["permissions"]
+                            if file.get("owner"):
+                                file_info["owner"] = file["owner"]
+                            userdata_dict["write_files"].append(file_info)
+                    userdata = "#cloud-config\n"
+                    userdata += yaml.safe_dump(userdata_dict, indent=4, default_flow_style=False)
                 self.logger.debug("userdata: %s", userdata)
             elif isinstance(cloud_config, str):
                 userdata = cloud_config
-            else:
-                userdata=None
 
             #Create additional volumes in case these are present in disk_list
             block_device_mapping = None
@@ -803,6 +833,7 @@
                                               availability_zone=self.config.get('availability_zone'),
                                               key_name=self.config.get('keypair'),
                                               userdata=userdata,
+                                              config_drive = config_drive,
                                               block_device_mapping = block_device_mapping
                                               )  # , description=description)
             #print "DONE :-)", server