add support for creating initial users and groups

Added "userless" mode to cloud-init for handling the creation of the users
and the default user on Ubuntu. The end goal of this is to remove the need
for the 'ubuntu' user in the cloud images and to allow individuals to
choose the default user name.

LP: #1028503

1 files changed, 70 insertions, 0 deletions

diff --git a/cloudinit/config/cc_users_groups.py b/cloudinit/config/cc_users_groups.py
new file mode 100644
index 00000000..1e241623
--- /dev/null
+++ b/cloudinit/config/cc_users_groups.py
@@ -0,0 +1,70 @@
+# vi: ts=4 expandtab
+#
+#    Copyright (C) 2012 Canonical Ltd.
+#
+#    Author: Ben Howard <ben.howard@canonical.com>
+#
+#    This program is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU General Public License version 3, as
+#    published by the Free Software Foundation.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU General Public License for more details.
+#
+#    You should have received a copy of the GNU General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+from cloudinit.settings import PER_INSTANCE
+
+frequency = PER_INSTANCE
+
+
+def handle(name, cfg, cloud, log, _args):
+    user_zero = None
+
+    if 'groups' in cfg:
+        for group in cfg['groups']:
+            if isinstance(group, dict):
+                for name, values in group.iteritems():
+                    if isinstance(values, list):
+                        cloud.distro.create_group(name, values)
+                    elif isinstance(values, str):
+                        cloud.distro.create_group(name, values.split(','))
+            else:
+                cloud.distro.create_group(group, [])
+
+    if 'users' in cfg:
+        user_zero = None
+
+        for name, user_config in cfg['users'].iteritems():
+            if not user_zero:
+                user_zero = name
+
+            # Handle the default user creation
+            if name == "default" and user_config:
+                log.info("Creating default user")
+
+                # Create the default user if so defined
+                try:
+                    cloud.distro.add_default_user()
+
+                    if user_zero == name:
+                        user_zero = cloud.distro.get_default_user()
+
+                except NotImplementedError:
+
+                    if user_zero == name:
+                        user_zero = None
+
+                    log.warn("Distro has not implemented default user "
+                             "creation. No default user will be created")
+            else:
+                # Make options friendly for distro.create_user
+                new_opts = {}
+                if isinstance(user_config, dict):
+                    for opt in user_config:
+                        new_opts[opt.replace('-', '')] = user_config[opt]
+
+                cloud.distro.create_user(name, **new_opts)