diff --git a/_modules/cfgdrive.py b/_modules/cfgdrive.py
new file mode 100644
index 0000000..bc76b77
--- /dev/null
+++ b/_modules/cfgdrive.py
@@ -0,0 +1,114 @@
+# -*- coding: utf-8 -*-
+
+import json
+import logging
+import os
+import shutil
+import six
+import tempfile
+import yaml
+
+from oslo_utils import uuidutils
+from oslo_utils import fileutils
+from oslo_concurrency import processutils
+
+class ConfigDriveBuilder(object):
+    """Build config drives, optionally as a context manager."""
+
+    def __init__(self, image_file):
+        self.image_file = image_file
+        self.mdfiles=[]
+
+    def __enter__(self):
+        fileutils.delete_if_exists(self.image_file)
+        return self
+
+    def __exit__(self, exctype, excval, exctb):
+        self.make_drive()
+
+    def add_file(self, path, data):
+        self.mdfiles.append((path, data))
+
+    def _add_file(self, basedir, path, data):
+        filepath = os.path.join(basedir, path)
+        dirname = os.path.dirname(filepath)
+        fileutils.ensure_tree(dirname)
+        with open(filepath, 'wb') as f:
+            if isinstance(data, six.text_type):
+                data = data.encode('utf-8')
+            f.write(data)
+
+    def _write_md_files(self, basedir):
+        for data in self.mdfiles:
+            self._add_file(basedir, data[0], data[1])
+
+    def _make_iso9660(self, path, tmpdir):
+
+        processutils.execute('mkisofs',
+            '-o', path,
+            '-ldots',
+            '-allow-lowercase',
+            '-allow-multidot',
+            '-l',
+            '-V', 'config-2',
+            '-r',
+            '-J',
+            '-quiet',
+            tmpdir,
+            attempts=1,
+            run_as_root=False)
+
+    def make_drive(self):
+        """Make the config drive.
+        :raises ProcessExecuteError if a helper process has failed.
+        """
+        try:
+            tmpdir = tempfile.mkdtemp()
+            self._write_md_files(tmpdir)
+            self._make_iso9660(self.image_file, tmpdir)
+        finally:
+            shutil.rmtree(tmpdir)
+
+
+def generate(
+               dst,
+               hostname,
+               domainname,
+               instance_id=None,
+               user_data=None,
+               network_data=None,
+               saltconfig=None
+            ):
+
+    ''' Generate config drive
+
+    :param dst: destination file to place config drive.
+    :param hostname: hostname of Instance.
+    :param domainname: instance domain.
+    :param instance_id: UUID of the instance.
+    :param user_data: custom user data dictionary. type: json
+    :param network_data: custom network info dictionary. type: json
+    :param saltconfig: salt minion configuration. type: json
+
+    '''
+
+    instance_md              = {}
+    instance_md['uuid']      = instance_id or uuidutils.generate_uuid()
+    instance_md['hostname']  = '%s.%s' % (hostname, domainname)
+    instance_md['name']      = hostname
+
+    if user_data:
+      user_data = '#cloud-config\n\n' + yaml.dump(yaml.load(user_data), default_flow_style=False)
+      if saltconfig:
+        user_data += yaml.dump(yaml.load(str(saltconfig)), default_flow_style=False)
+
+    data = json.dumps(instance_md)
+
+    with ConfigDriveBuilder(dst) as cfgdrive:
+      cfgdrive.add_file('openstack/latest/meta_data.json', data)
+      if user_data:
+        cfgdrive.add_file('openstack/latest/user_data', user_data)
+      if network_data:
+         cfgdrive.add_file('openstack/latest/network_data.json', network_data)
+      cfgdrive.add_file('openstack/latest/vendor_data.json', '{}')
+      cfgdrive.add_file('openstack/latest/vendor_data2.json', '{}')