diff --git a/troveclient/tests/test_backups.py b/troveclient/tests/test_backups.py
index 696f1878..34b2e5a1 100644
--- a/troveclient/tests/test_backups.py
+++ b/troveclient/tests/test_backups.py
@@ -46,6 +46,8 @@ class BackupManagerTest(testtools.TestCase):
     def setUp(self):
         super(BackupManagerTest, self).setUp()
         self.backups = backups.Backups(mock.Mock())
+        self.instance_with_id = mock.Mock()
+        self.instance_with_id.id = 215
 
     def tearDown(self):
         super(BackupManagerTest, self).tearDown()
@@ -66,6 +68,14 @@ class BackupManagerTest(testtools.TestCase):
         self.backups.create(**args)
         create_mock.assert_called_with('/backups', body, 'backup')
 
+    def test_create_with_instance_obj(self):
+        create_mock = mock.Mock()
+        self.backups._create = create_mock
+        args = {'name': 'test_backup', 'instance': self.instance_with_id.id}
+        body = {'backup': args}
+        self.backups.create('test_backup', self.instance_with_id)
+        create_mock.assert_called_with('/backups', body, 'backup')
+
     def test_create_incremental(self):
         create_mock = mock.Mock()
         self.backups._create = create_mock
diff --git a/troveclient/tests/test_databases.py b/troveclient/tests/test_databases.py
new file mode 100644
index 00000000..51fdd6e3
--- /dev/null
+++ b/troveclient/tests/test_databases.py
@@ -0,0 +1,108 @@
+# Copyright 2014 Tesora Inc.
+# All Rights Reserved.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+import mock
+import testtools
+
+from troveclient.v1 import databases
+
+"""
+Unit tests for databases.py
+"""
+
+
+class DatabaseTest(testtools.TestCase):
+    def setUp(self):
+        super(DatabaseTest, self).setUp()
+        self.orig__init = databases.Database.__init__
+        databases.Database.__init__ = mock.Mock(return_value=None)
+        self.database = databases.Database()
+
+    def tearDown(self):
+        super(DatabaseTest, self).tearDown()
+        databases.Database.__init__ = self.orig__init
+
+
+class DatabasesTest(testtools.TestCase):
+    def setUp(self):
+        super(DatabasesTest, self).setUp()
+        self.orig__init = databases.Databases.__init__
+        databases.Databases.__init__ = mock.Mock(return_value=None)
+        self.databases = databases.Databases()
+        self.databases.api = mock.Mock()
+        self.databases.api.client = mock.Mock()
+
+        self.instance_with_id = mock.Mock()
+        self.instance_with_id.id = 215
+
+        self.fakedb1 = ['db1']
+        self.fakedb2 = ['db1', 'db2']
+
+    def tearDown(self):
+        super(DatabasesTest, self).tearDown()
+        databases.Databases.__init__ = self.orig__init
+
+    def _get_mock_method(self):
+        self._resp = mock.Mock()
+        self._body = None
+        self._url = None
+
+        def side_effect_func(url, body=None):
+            self._body = body
+            self._url = url
+            return (self._resp, body)
+
+        return mock.Mock(side_effect=side_effect_func)
+
+    def test_create(self):
+        self.databases.api.client.post = self._get_mock_method()
+        self._resp.status_code = 200
+
+        self.databases.create(23, self.fakedb1)
+        self.assertEqual('/instances/23/databases', self._url)
+        self.assertEqual({"databases": self.fakedb1}, self._body)
+
+        self.databases.create(23, self.fakedb2)
+        self.assertEqual('/instances/23/databases', self._url)
+        self.assertEqual({"databases": self.fakedb2}, self._body)
+
+        # test creation with the instance as an object
+        self.databases.create(self.instance_with_id, self.fakedb1)
+        self.assertEqual({"databases": self.fakedb1}, self._body)
+
+    def test_delete(self):
+        self.databases.api.client.delete = self._get_mock_method()
+        self._resp.status_code = 200
+        self.databases.delete(27, self.fakedb1[0])
+        self.assertEqual('/instances/27/databases/%s' % self.fakedb1[0],
+                         self._url)
+        self.databases.delete(self.instance_with_id, self.fakedb1[0])
+        self.assertEqual('/instances/%s/databases/%s' %
+                         (self.instance_with_id.id, self.fakedb1[0]),
+                         self._url)
+        self._resp.status_code = 400
+        self.assertRaises(Exception, self.databases.delete, 34, self.fakedb1)
+
+    def test_list(self):
+        page_mock = mock.Mock()
+        self.databases._paginated = page_mock
+        self.databases.list('instance1')
+        page_mock.assert_called_with('/instances/instance1/databases',
+                                     'databases', None, None)
+        limit = 'test-limit'
+        marker = 'test-marker'
+        self.databases.list('instance1', limit, marker)
+        page_mock.assert_called_with('/instances/instance1/databases',
+                                     'databases', limit, marker)
diff --git a/troveclient/tests/test_instances.py b/troveclient/tests/test_instances.py
index 2754b5c4..e893c3fe 100644
--- a/troveclient/tests/test_instances.py
+++ b/troveclient/tests/test_instances.py
@@ -81,13 +81,12 @@ class InstancesTest(testtools.TestCase):
         self.instances.api.client = mock.Mock()
         self.instances.resource_class = mock.Mock(return_value="instance-1")
 
-        self.orig_base_getid = base.getid
-        base.getid = mock.Mock(return_value="instance1")
+        self.instance_with_id = mock.Mock()
+        self.instance_with_id.id = 215
 
     def tearDown(self):
         super(InstancesTest, self).tearDown()
         instances.Instances.__init__ = self.orig__init
-        base.getid = self.orig_base_getid
 
     def test_create(self):
         def side_effect_func(path, body, inst):
@@ -128,7 +127,7 @@ class InstancesTest(testtools.TestCase):
 
         self.instances._get = mock.Mock(side_effect=side_effect_func)
         self.assertEqual(('/instances/instance1', 'instance'),
-                         self.instances.get(1))
+                         self.instances.get('instance1'))
 
     def test_delete(self):
         resp = mock.Mock()
@@ -136,6 +135,7 @@ class InstancesTest(testtools.TestCase):
         body = None
         self.instances.api.client.delete = mock.Mock(return_value=(resp, body))
         self.instances.delete('instance1')
+        self.instances.delete(self.instance_with_id)
         resp.status_code = 500
         self.assertRaises(Exception, self.instances.delete, 'instance1')
 
@@ -150,32 +150,52 @@ class InstancesTest(testtools.TestCase):
         self.assertIsNone(self.instances._action(1, body))
 
     def _set_action_mock(self):
-        def side_effect_func(instance_id, body):
-            self._instance_id = instance_id
+        def side_effect_func(instance, body):
+            self._instance_id = base.getid(instance)
             self._body = body
 
         self._instance_id = None
         self._body = None
         self.instances._action = mock.Mock(side_effect=side_effect_func)
 
-    def test_resize_volume(self):
+    def _test_resize_volume(self, instance, id):
         self._set_action_mock()
-        self.instances.resize_volume(152, 512)
-        self.assertEqual(152, self._instance_id)
-        self.assertEqual({"resize": {"volume": {"size": 512}}}, self._body)
+        self.instances.resize_volume(instance, 1024)
+        self.assertEqual(id, self._instance_id)
+        self.assertEqual({"resize": {"volume": {"size": 1024}}}, self._body)
 
-    def test_resize_instance(self):
+    def test_resize_volume_with_id(self):
+        self._test_resize_volume(152, 152)
+
+    def test_resize_volume_with_obj(self):
+        self._test_resize_volume(self.instance_with_id,
+                                 self.instance_with_id.id)
+
+    def _test_resize_instance(self, instance, id):
         self._set_action_mock()
-        self.instances.resize_instance(4725, 103)
-        self.assertEqual(4725, self._instance_id)
+        self.instances.resize_instance(instance, 103)
+        self.assertEqual(id, self._instance_id)
         self.assertEqual({"resize": {"flavorRef": 103}}, self._body)
 
-    def test_restart(self):
+    def test_resize_instance_with_id(self):
+        self._test_resize_instance(4725, 4725)
+
+    def test_resize_instance_with_obj(self):
+        self._test_resize_instance(self.instance_with_id,
+                                   self.instance_with_id.id)
+
+    def _test_restart(self, instance, id):
         self._set_action_mock()
-        self.instances.restart(253)
-        self.assertEqual(253, self._instance_id)
+        self.instances.restart(instance)
+        self.assertEqual(id, self._instance_id)
         self.assertEqual({'restart': {}}, self._body)
 
+    def test_restart_with_id(self):
+        self._test_restart(253, 253)
+
+    def test_restart_with_obj(self):
+        self._test_restart(self.instance_with_id, self.instance_with_id.id)
+
     def test_modify(self):
         resp = mock.Mock()
         resp.status_code = 200
@@ -183,6 +203,8 @@ class InstancesTest(testtools.TestCase):
         self.instances.api.client.put = mock.Mock(return_value=(resp, body))
         self.instances.modify(123)
         self.instances.modify(123, 321)
+        self.instances.modify(self.instance_with_id)
+        self.instances.modify(self.instance_with_id, 123)
         resp.status_code = 500
         self.assertRaises(Exception, self.instances.modify, 'instance1')
 
@@ -195,6 +217,10 @@ class InstancesTest(testtools.TestCase):
         self.instances.edit(123, 321)
         self.instances.edit(123, 321, 'name-1234')
         self.instances.edit(123, 321, 'name-1234', True)
+        self.instances.edit(self.instance_with_id)
+        self.instances.edit(self.instance_with_id, 123)
+        self.instances.edit(self.instance_with_id, 123, 'name-1234')
+        self.instances.edit(self.instance_with_id, 123, 'name-1234', True)
         resp.status_code = 500
         self.assertRaises(Exception, self.instances.edit, 'instance1')
 
@@ -204,7 +230,7 @@ class InstancesTest(testtools.TestCase):
 
         self.instances._get = mock.Mock(side_effect=side_effect_func)
         self.assertEqual(('/instances/instance1/configuration', 'instance'),
-                         self.instances.configuration(1))
+                         self.instances.configuration('instance1'))
 
 
 class InstanceStatusTest(testtools.TestCase):
diff --git a/troveclient/tests/test_users.py b/troveclient/tests/test_users.py
index d91e759b..c8915c70 100644
--- a/troveclient/tests/test_users.py
+++ b/troveclient/tests/test_users.py
@@ -18,7 +18,6 @@
 import mock
 import testtools
 
-from troveclient import base
 from troveclient.v1 import users
 
 """
@@ -51,13 +50,12 @@ class UsersTest(testtools.TestCase):
         self.users.api = mock.Mock()
         self.users.api.client = mock.Mock()
 
-        self.orig_base_getid = base.getid
-        base.getid = mock.Mock(return_value="instance1")
+        self.instance_with_id = mock.Mock()
+        self.instance_with_id.id = 215
 
     def tearDown(self):
         super(UsersTest, self).tearDown()
         users.Users.__init__ = self.orig__init
-        base.getid = self.orig_base_getid
 
     def _get_mock_method(self):
         self._resp = mock.Mock()
@@ -102,6 +100,10 @@ class UsersTest(testtools.TestCase):
         self.users.create(23, [user])
         self.assertEqual({"users": [user]}, self._body)
 
+        # test creation with the instance as an object
+        self.users.create(self.instance_with_id, [user])
+        self.assertEqual({"users": [user]}, self._body)
+
         # Make sure that response of 400 is recognized as an error.
         user['host'] = '%'
         self._resp.status_code = 400
@@ -112,18 +114,21 @@ class UsersTest(testtools.TestCase):
         self._resp.status_code = 200
         self.users.delete(27, 'user1')
         self.assertEqual('/instances/27/users/user1', self._url)
+        self.users.delete(self.instance_with_id, 'user1')
+        self.assertEqual('/instances/%s/users/user1' %
+                         self.instance_with_id.id, self._url)
         self._resp.status_code = 400
         self.assertRaises(Exception, self.users.delete, 34, 'user1')
 
     def test_list(self):
         page_mock = mock.Mock()
         self.users._paginated = page_mock
-        self.users.list(1)
+        self.users.list('instance1')
         page_mock.assert_called_with('/instances/instance1/users',
                                      'users', None, None)
         limit = 'test-limit'
         marker = 'test-marker'
-        self.users.list(1, limit, marker)
+        self.users.list('instance1', limit, marker)
         page_mock.assert_called_with('/instances/instance1/users',
                                      'users', limit, marker)
 
diff --git a/troveclient/v1/backups.py b/troveclient/v1/backups.py
index 56939836..eba5d8a9 100644
--- a/troveclient/v1/backups.py
+++ b/troveclient/v1/backups.py
@@ -60,7 +60,7 @@ class Backups(base.ManagerWithFind):
         }
 
         if instance:
-            body['backup']['instance'] = instance
+            body['backup']['instance'] = base.getid(instance)
         if backup:
             body["backup"]['backup'] = backup
         if description:
diff --git a/troveclient/v1/databases.py b/troveclient/v1/databases.py
index 1e957967..230df749 100644
--- a/troveclient/v1/databases.py
+++ b/troveclient/v1/databases.py
@@ -32,16 +32,16 @@ class Databases(base.ManagerWithFind):
     """Manage :class:`Databases` resources."""
     resource_class = Database
 
-    def create(self, instance_id, databases):
+    def create(self, instance, databases):
         """Create new databases within the specified instance."""
         body = {"databases": databases}
-        url = "/instances/%s/databases" % instance_id
+        url = "/instances/%s/databases" % base.getid(instance)
         resp, body = self.api.client.post(url, body=body)
         common.check_for_exceptions(resp, body, url)
 
-    def delete(self, instance_id, dbname):
+    def delete(self, instance, dbname):
         """Delete an existing database in the specified instance."""
-        url = "/instances/%s/databases/%s" % (instance_id, dbname)
+        url = "/instances/%s/databases/%s" % (base.getid(instance), dbname)
         resp, body = self.api.client.delete(url)
         common.check_for_exceptions(resp, body, url)
 
diff --git a/troveclient/v1/instances.py b/troveclient/v1/instances.py
index 9a10d87b..da2cb943 100644
--- a/troveclient/v1/instances.py
+++ b/troveclient/v1/instances.py
@@ -80,22 +80,22 @@ class Instances(base.ManagerWithFind):
         if configuration:
             body["instance"]["configuration"] = configuration
         if replica_of or slave_of:
-            body["instance"]["replica_of"] = replica_of or slave_of
+            body["instance"]["replica_of"] = base.getid(replica_of) or slave_of
 
         return self._create("/instances", body, "instance")
 
-    def modify(self, instance_id, configuration=None):
+    def modify(self, instance, configuration=None):
         body = {
             "instance": {
             }
         }
         if configuration is not None:
             body["instance"]["configuration"] = configuration
-        url = "/instances/%s" % instance_id
+        url = "/instances/%s" % base.getid(instance)
         resp, body = self.api.client.put(url, body=body)
         common.check_for_exceptions(resp, body, url)
 
-    def edit(self, instance_id, configuration=None, name=None,
+    def edit(self, instance, configuration=None, name=None,
              detach_replica_source=False, remove_configuration=False):
         body = {
             "instance": {
@@ -116,7 +116,7 @@ class Instances(base.ManagerWithFind):
             body["instance"]["slave_of"] = None
             body["instance"]["replica_of"] = None
 
-        url = "/instances/%s" % instance_id
+        url = "/instances/%s" % base.getid(instance)
         resp, body = self.api.client.patch(url, body=body)
         common.check_for_exceptions(resp, body, url)
 
@@ -147,38 +147,39 @@ class Instances(base.ManagerWithFind):
     def delete(self, instance):
         """Delete the specified instance.
 
-        :param instance_id: The instance id to delete
+        :param instance: A reference to the instance to delete
         """
         url = "/instances/%s" % base.getid(instance)
         resp, body = self.api.client.delete(url)
         common.check_for_exceptions(resp, body, url)
 
-    def _action(self, instance_id, body):
+    def _action(self, instance, body):
         """Perform a server "action" -- reboot/rebuild/resize/etc."""
-        url = "/instances/%s/action" % instance_id
+        url = "/instances/%s/action" % base.getid(instance)
         resp, body = self.api.client.post(url, body=body)
         common.check_for_exceptions(resp, body, url)
         if body:
             return self.resource_class(self, body, loaded=True)
         return body
 
-    def resize_volume(self, instance_id, volume_size):
+    def resize_volume(self, instance, volume_size):
         """Resize the volume on an existing instances."""
         body = {"resize": {"volume": {"size": volume_size}}}
-        self._action(instance_id, body)
+        self._action(instance, body)
 
-    def resize_instance(self, instance_id, flavor_id):
+    def resize_instance(self, instance, flavor_id):
         """Resizes an instance with a new flavor."""
         body = {"resize": {"flavorRef": flavor_id}}
-        self._action(instance_id, body)
+        self._action(instance, body)
 
-    def restart(self, instance_id):
+    def restart(self, instance):
         """Restart the database instance.
 
-        :param instance_id: The :class:`Instance` (or its ID) to share onto.
+        :param instance: The :class:`Instance` (or its ID) of the database
+        instance to restart.
         """
         body = {'restart': {}}
-        self._action(instance_id, body)
+        self._action(instance, body)
 
     def configuration(self, instance):
         """Get a configuration on instances.
diff --git a/troveclient/v1/root.py b/troveclient/v1/root.py
index 95f2088b..62462193 100644
--- a/troveclient/v1/root.py
+++ b/troveclient/v1/root.py
@@ -24,19 +24,19 @@ class Root(base.ManagerWithFind):
     resource_class = users.User
     url = "/instances/%s/root"
 
-    def create(self, instance_id):
+    def create(self, instance):
         """Implements root-enable API.
 
         Enable the root user and return the root password for the
         specified db instance.
         """
-        resp, body = self.api.client.post(self.url % instance_id)
+        resp, body = self.api.client.post(self.url % base.getid(instance))
         common.check_for_exceptions(resp, body, self.url)
         return body['user']['name'], body['user']['password']
 
-    def is_root_enabled(self, instance_id):
+    def is_root_enabled(self, instance):
         """Return whether root is enabled for the instance."""
-        resp, body = self.api.client.get(self.url % instance_id)
+        resp, body = self.api.client.get(self.url % base.getid(instance))
         common.check_for_exceptions(resp, body, self.url)
         return self.resource_class(self, body, loaded=True)
 
diff --git a/troveclient/v1/shell.py b/troveclient/v1/shell.py
index 000ba29b..dd9408ee 100644
--- a/troveclient/v1/shell.py
+++ b/troveclient/v1/shell.py
@@ -234,11 +234,13 @@ def do_cluster_instances(cs, args):
         obj_is_dict=True)
 
 
-@utils.arg('instance', metavar='<instance>', help='ID of the instance.')
+@utils.arg('instance', metavar='<instance>',
+           help='ID or name  of the instance.')
 @utils.service_type('database')
 def do_delete(cs, args):
     """Deletes an instance."""
-    cs.instances.delete(args.instance)
+    instance = _find_instance(cs, args.instance)
+    cs.instances.delete(instance)
 
 
 @utils.arg('cluster', metavar='<cluster>', help='ID of the cluster.')
@@ -251,7 +253,7 @@ def do_cluster_delete(cs, args):
 @utils.arg('instance',
            metavar='<instance>',
            type=str,
-           help='UUID of the instance.')
+           help='ID or name of the instance.')
 @utils.arg('--name',
            metavar='<name>',
            type=str,
@@ -275,7 +277,8 @@ def do_cluster_delete(cs, args):
 @utils.service_type('database')
 def do_update(cs, args):
     """Updates an instance: Edits name, configuration, or replica source."""
-    cs.instances.edit(args.instance, args.configuration, args.name,
+    instance = _find_instance(cs, args.instance)
+    cs.instances.edit(instance, args.configuration, args.name,
                       args.detach_replica_source, args.remove_configuration)
 
 
@@ -331,18 +334,21 @@ def do_update(cs, args):
            default=None,
            help='ID of the configuration group to attach to the instance.')
 @utils.arg('--replica_of',
-           metavar='<source_id>',
+           metavar='<source_instance>',
            default=None,
-           help='ID of an existing instance to replicate from.')
+           help='ID or name of an existing instance to replicate from.')
 @utils.service_type('database')
 def do_create(cs, args):
     """Creates a new instance."""
     volume = None
+    replica_of_instance = None
     if args.size:
         volume = {"size": args.size}
     restore_point = None
     if args.backup:
         restore_point = {"backupRef": args.backup}
+    if args.replica_of:
+        replica_of_instance = _find_instance(cs, args.replica_of)
     databases = [{'name': value} for value in args.databases]
     users = [{'name': n, 'password': p, 'databases': databases} for (n, p) in
              [z.split(':')[:2] for z in args.users]]
@@ -368,7 +374,7 @@ def do_create(cs, args):
                                    datastore_version=args.datastore_version,
                                    nics=nics,
                                    configuration=args.configuration,
-                                   replica_of=args.replica_of)
+                                   replica_of=replica_of_instance)
     _print_instance(instance)
 
 
@@ -425,7 +431,7 @@ def do_cluster_create(cs, args):
 @utils.arg('instance',
            metavar='<instance>',
            type=str,
-           help='ID of the instance.')
+           help='ID or name of the instance.')
 @utils.arg('flavor_id',
            metavar='<flavor_id>',
            help='New flavor of the instance.')
@@ -438,20 +444,21 @@ def do_resize_flavor(cs, args):
 @utils.arg('instance',
            metavar='<instance>',
            type=str,
-           help='ID of the instance.')
+           help='ID or name of the instance.')
 @utils.arg('flavor_id',
            metavar='<flavor_id>',
            help='New flavor of the instance.')
 @utils.service_type('database')
 def do_resize_instance(cs, args):
     """Resizes an instance with a new flavor."""
-    cs.instances.resize_instance(args.instance, args.flavor_id)
+    instance = _find_instance(cs, args.instance)
+    cs.instances.resize_instance(instance, args.flavor_id)
 
 
 @utils.arg('instance',
            metavar='<instance>',
            type=str,
-           help='ID of the instance.')
+           help='ID or name of the instance.')
 @utils.arg('size',
            metavar='<size>',
            type=int,
@@ -460,26 +467,29 @@ def do_resize_instance(cs, args):
 @utils.service_type('database')
 def do_resize_volume(cs, args):
     """Resizes the volume size of an instance."""
-    cs.instances.resize_volume(args.instance, args.size)
+    instance = _find_instance(cs, args.instance)
+    cs.instances.resize_volume(instance, args.size)
 
 
 @utils.arg('instance',
            metavar='<instance>',
            type=str,
-           help='ID of the instance.')
+           help='ID or name of the instance.')
 @utils.service_type('database')
 def do_restart(cs, args):
     """Restarts an instance."""
-    cs.instances.restart(args.instance)
+    instance = _find_instance(cs, args.instance)
+    cs.instances.restart(instance)
 
 
 @utils.arg('instance',
            metavar='<instance>',
            type=str,
-           help='ID of the instance.')
+           help='ID or name of the instance.')
 def do_detach_replica(cs, args):
     """Detaches a replica instance from its replication source."""
-    cs.instances.edit(args.instance, detach_replica_source=True)
+    instance = _find_instance(cs, args.instance)
+    cs.instances.edit(instance, detach_replica_source=True)
 
 # Backup related commands
 
@@ -492,17 +502,19 @@ def do_backup_show(cs, args):
     _print_object(backup)
 
 
-@utils.arg('instance', metavar='<instance>', help='ID of the instance.')
+@utils.arg('instance', metavar='<instance>',
+           help='ID or name of the instance.')
 @utils.arg('--limit', metavar='<limit>',
            default=None,
            help='Return up to N number of the most recent backups.')
 @utils.service_type('database')
 def do_backup_list_instance(cs, args):
     """Lists available backups for an instance."""
-    wrapper = cs.instances.backups(args.instance, limit=args.limit)
+    instance = _find_instance(cs, args.instance)
+    wrapper = cs.instances.backups(instance, limit=args.limit)
     backups = wrapper.items
     while wrapper.next and not args.limit:
-        wrapper = cs.instances.backups(args.instance, marker=wrapper.next)
+        wrapper = cs.instances.backups(instance, marker=wrapper.next)
         backups += wrapper.items
     utils.print_list(backups, ['id', 'name', 'status',
                                'parent_id', 'updated'],
@@ -535,7 +547,8 @@ def do_backup_delete(cs, args):
     cs.backups.delete(args.backup)
 
 
-@utils.arg('instance', metavar='<instance>', help='ID of the instance.')
+@utils.arg('instance', metavar='<instance>',
+           help='ID or name of the instance.')
 @utils.arg('name', metavar='<name>', help='Name of the backup.')
 @utils.arg('--description', metavar='<description>',
            default=None,
@@ -546,7 +559,8 @@ def do_backup_delete(cs, args):
 @utils.service_type('database')
 def do_backup_create(cs, args):
     """Creates a backup of an instance."""
-    backup = cs.backups.create(args.name, args.instance,
+    instance = _find_instance(cs, args.instance)
+    backup = cs.backups.create(args.name, instance,
                                description=args.description,
                                parent_id=args.parent)
     _print_object(backup)
@@ -578,7 +592,8 @@ def do_backup_copy(cs, args):
 
 # Database related actions
 
-@utils.arg('instance', metavar='<instance>', help='ID of the instance.')
+@utils.arg('instance', metavar='<instance>',
+           help='ID or name of the instance.')
 @utils.arg('name', metavar='<name>', help='Name of the database.')
 @utils.arg('--character_set', metavar='<character_set>',
            default=None,
@@ -588,39 +603,45 @@ def do_backup_copy(cs, args):
 @utils.service_type('database')
 def do_database_create(cs, args):
     """Creates a database on an instance."""
+    instance = _find_instance(cs, args.instance)
     database_dict = {'name': args.name}
     if args.collate:
         database_dict['collate'] = args.collate
     if args.character_set:
         database_dict['character_set'] = args.character_set
-    cs.databases.create(args.instance,
+    cs.databases.create(instance,
                         [database_dict])
 
 
-@utils.arg('instance', metavar='<instance>', help='ID of the instance.')
+@utils.arg('instance', metavar='<instance>',
+           help='ID or name of the instance.')
 @utils.service_type('database')
 def do_database_list(cs, args):
     """Lists available databases on an instance."""
-    wrapper = cs.databases.list(args.instance)
+    instance = _find_instance(cs, args.instance)
+    wrapper = cs.databases.list(instance)
     databases = wrapper.items
     while (wrapper.next):
-        wrapper = cs.databases.list(args.instance, marker=wrapper.next)
+        wrapper = cs.databases.list(instance, marker=wrapper.next)
         databases += wrapper.items
 
     utils.print_list(databases, ['name'])
 
 
-@utils.arg('instance', metavar='<instance>', help='ID of the instance.')
+@utils.arg('instance', metavar='<instance>',
+           help='ID or name  of the instance.')
 @utils.arg('database', metavar='<database>', help='Name of the database.')
 @utils.service_type('database')
 def do_database_delete(cs, args):
     """Deletes a database from an instance."""
-    cs.databases.delete(args.instance, args.database)
+    instance = _find_instance(cs, args.instance)
+    cs.databases.delete(instance, args.database)
 
 
 # User related actions
 
-@utils.arg('instance', metavar='<instance>', help='ID of the instance.')
+@utils.arg('instance', metavar='<instance>',
+           help='ID or name  of the instance.')
 @utils.arg('name', metavar='<name>', help='Name of user.')
 @utils.arg('password', metavar='<password>', help='Password of user.')
 @utils.arg('--host', metavar='<host>', default=None,
@@ -631,22 +652,25 @@ def do_database_delete(cs, args):
 @utils.service_type('database')
 def do_user_create(cs, args):
     """Creates a user on an instance."""
+    instance = _find_instance(cs, args.instance)
     databases = [{'name': value} for value in args.databases]
     user = {'name': args.name, 'password': args.password,
             'databases': databases}
     if args.host:
         user['host'] = args.host
-    cs.users.create(args.instance, [user])
+    cs.users.create(instance, [user])
 
 
-@utils.arg('instance', metavar='<instance>', help='ID of the instance.')
+@utils.arg('instance', metavar='<instance>',
+           help='ID or name of the instance.')
 @utils.service_type('database')
 def do_user_list(cs, args):
     """Lists the users for an instance."""
-    wrapper = cs.users.list(args.instance)
+    instance = _find_instance(cs, args.instance)
+    wrapper = cs.users.list(instance)
     users = wrapper.items
     while (wrapper.next):
-        wrapper = cs.users.list(args.instance, marker=wrapper.next)
+        wrapper = cs.users.list(instance, marker=wrapper.next)
         users += wrapper.items
     for user in users:
         db_names = [db['name'] for db in user.databases]
@@ -654,39 +678,46 @@ def do_user_list(cs, args):
     utils.print_list(users, ['name', 'host', 'databases'])
 
 
-@utils.arg('instance', metavar='<instance>', help='ID of the instance.')
+@utils.arg('instance', metavar='<instance>',
+           help='ID or name of the instance.')
 @utils.arg('name', metavar='<name>', help='Name of user.')
 @utils.arg('--host', metavar='<host>', default=None,
            help='Optional host of user.')
 @utils.service_type('database')
 def do_user_delete(cs, args):
     """Deletes a user from an instance."""
-    cs.users.delete(args.instance, args.name, hostname=args.host)
+    instance = _find_instance(cs, args.instance)
+    cs.users.delete(instance, args.name, hostname=args.host)
 
 
-@utils.arg('instance', metavar='<instance>', help='ID of the instance.')
+@utils.arg('instance', metavar='<instance>',
+           help='ID or name of the instance.')
 @utils.arg('name', metavar='<name>', help='Name of user.')
 @utils.arg('--host', metavar='<host>', default=None,
            help='Optional host of user.')
 @utils.service_type('database')
 def do_user_show(cs, args):
     """Shows details of a user of an instance."""
-    user = cs.users.get(args.instance, args.name, hostname=args.host)
+    instance = _find_instance(cs, args.instance)
+    user = cs.users.get(instance, args.name, hostname=args.host)
     _print_object(user)
 
 
-@utils.arg('instance', metavar='<instance>', help='ID of the instance.')
+@utils.arg('instance', metavar='<instance>',
+           help='ID or name of the instance.')
 @utils.arg('name', metavar='<name>', help='Name of user.')
 @utils.arg('--host', metavar='<host>', default=None,
            help='Optional host of user.')
 @utils.service_type('database')
 def do_user_show_access(cs, args):
     """Shows access details of a user of an instance."""
-    access = cs.users.list_access(args.instance, args.name, hostname=args.host)
+    instance = _find_instance(cs, args.instance)
+    access = cs.users.list_access(instance, args.name, hostname=args.host)
     utils.print_list(access, ['name'])
 
 
-@utils.arg('instance', metavar='<instance>', help='ID of the instance.')
+@utils.arg('instance', metavar='<instance>',
+           help='ID or name of the instance.')
 @utils.arg('name', metavar='<name>', help='Name of user.')
 @utils.arg('--host', metavar='<host>', default=None,
            help='Optional host of user.')
@@ -701,6 +732,7 @@ def do_user_update_attributes(cs, args):
     """Updates a user's attributes on an instance.
     At least one optional argument must be provided.
     """
+    instance = _find_instance(cs, args.instance)
     new_attrs = {}
     if args.new_name:
         new_attrs['name'] = args.new_name
@@ -708,11 +740,12 @@ def do_user_update_attributes(cs, args):
         new_attrs['password'] = args.new_password
     if args.new_host:
         new_attrs['host'] = args.new_host
-    cs.users.update_attributes(args.instance, args.name,
+    cs.users.update_attributes(instance, args.name,
                                newuserattr=new_attrs, hostname=args.host)
 
 
-@utils.arg('instance', metavar='<instance>', help='ID of the instance.')
+@utils.arg('instance', metavar='<instance>',
+           help='ID or name of the instance.')
 @utils.arg('name', metavar='<name>', help='Name of user.')
 @utils.arg('--host', metavar='<host>', default=None,
            help='Optional host of user.')
@@ -722,11 +755,13 @@ def do_user_update_attributes(cs, args):
 @utils.service_type('database')
 def do_user_grant_access(cs, args):
     """Grants access to a database(s) for a user."""
-    cs.users.grant(args.instance, args.name,
+    instance = _find_instance(cs, args.instance)
+    cs.users.grant(instance, args.name,
                    args.databases, hostname=args.host)
 
 
-@utils.arg('instance', metavar='<instance>', help='ID of the instance.')
+@utils.arg('instance', metavar='<instance>',
+           help='ID or name of the instance.')
 @utils.arg('name', metavar='<name>', help='Name of user.')
 @utils.arg('database', metavar='<database>', help='A single database.')
 @utils.arg('--host', metavar='<host>', default=None,
@@ -734,7 +769,8 @@ def do_user_grant_access(cs, args):
 @utils.service_type('database')
 def do_user_revoke_access(cs, args):
     """Revokes access to a database for a user."""
-    cs.users.revoke(args.instance, args.name,
+    instance = _find_instance(cs, args.instance)
+    cs.users.revoke(instance, args.name,
                     args.database, hostname=args.host)
 
 
@@ -752,19 +788,23 @@ def do_limit_list(cs, args):
 
 # Root related commands
 
-@utils.arg('instance', metavar='<instance>', help='ID of the instance.')
+@utils.arg('instance', metavar='<instance>',
+           help='ID or name of the instance.')
 @utils.service_type('database')
 def do_root_enable(cs, args):
     """Enables root for an instance and resets if already exists."""
-    root = cs.root.create(args.instance)
+    instance = _find_instance(cs, args.instance)
+    root = cs.root.create(instance)
     utils.print_dict({'name': root[0], 'password': root[1]})
 
 
-@utils.arg('instance', metavar='<instance>', help='ID of the instance.')
+@utils.arg('instance', metavar='<instance>',
+           help='ID or name of the instance.')
 @utils.service_type('database')
 def do_root_show(cs, args):
     """Gets status if root was ever enabled for an instance."""
-    root = cs.root.is_root_enabled(args.instance)
+    instance = _find_instance(cs, args.instance)
+    root = cs.root.is_root_enabled(instance)
     utils.print_dict({'is_root_enabled': root.rootEnabled})
 
 
@@ -881,7 +921,7 @@ def do_datastore_version_show(cs, args):
 @utils.arg('instance',
            metavar='<instance>',
            type=str,
-           help='ID of the instance.')
+           help='ID or name of the instance.')
 @utils.arg('configuration',
            metavar='<configuration>',
            type=str,
@@ -889,7 +929,8 @@ def do_datastore_version_show(cs, args):
 @utils.service_type('database')
 def do_configuration_attach(cs, args):
     """Attaches a configuration group to an instance."""
-    cs.instances.modify(args.instance, args.configuration)
+    instance = _find_instance(cs, args.instance)
+    cs.instances.modify(instance, args.configuration)
 
 
 @utils.arg('name', metavar='<name>', help='Name of the configuration group.')
@@ -918,11 +959,12 @@ def do_configuration_create(cs, args):
 @utils.arg('instance',
            metavar='<instance>',
            type=str,
-           help='ID of the instance.')
+           help='ID or name of the instance.')
 @utils.service_type('database')
 def do_configuration_default(cs, args):
     """Shows the default configuration of an instance."""
-    configs = cs.instances.configuration(args.instance)
+    instance = _find_instance(cs, args.instance)
+    configs = cs.instances.configuration(instance)
     utils.print_dict(configs._info['configuration'])
 
 
@@ -937,11 +979,12 @@ def do_configuration_delete(cs, args):
 @utils.arg('instance',
            metavar='<instance>',
            type=str,
-           help='ID of the instance.')
+           help='ID or name of the instance.')
 @utils.service_type('database')
 def do_configuration_detach(cs, args):
     """Detaches a configuration group from an instance."""
-    cs.instances.modify(args.instance)
+    instance = _find_instance(cs, args.instance)
+    cs.instances.modify(instance)
 
 
 @utils.arg('--datastore', metavar='<datastore>',
diff --git a/troveclient/v1/users.py b/troveclient/v1/users.py
index cf4d2059..6f018781 100644
--- a/troveclient/v1/users.py
+++ b/troveclient/v1/users.py
@@ -29,17 +29,17 @@ class Users(base.ManagerWithFind):
     """Manage :class:`Users` resources."""
     resource_class = User
 
-    def create(self, instance_id, users):
+    def create(self, instance, users):
         """Create users with permissions to the specified databases."""
         body = {"users": users}
-        url = "/instances/%s/users" % instance_id
+        url = "/instances/%s/users" % base.getid(instance)
         resp, body = self.api.client.post(url, body=body)
         common.check_for_exceptions(resp, body, url)
 
-    def delete(self, instance_id, username, hostname=None):
+    def delete(self, instance, username, hostname=None):
         """Delete an existing user in the specified instance."""
         user = common.quote_user_host(username, hostname)
-        url = "/instances/%s/users/%s" % (instance_id, user)
+        url = "/instances/%s/users/%s" % (base.getid(instance), user)
         resp, body = self.api.client.delete(url)
         common.check_for_exceptions(resp, body, url)
 
@@ -51,13 +51,13 @@ class Users(base.ManagerWithFind):
         url = "/instances/%s/users" % base.getid(instance)
         return self._paginated(url, "users", limit, marker)
 
-    def get(self, instance_id, username, hostname=None):
+    def get(self, instance, username, hostname=None):
         """Get a single User from the instance's Database.
 
         :rtype: :class:`User`.
         """
         user = common.quote_user_host(username, hostname)
-        url = "/instances/%s/users/%s" % (instance_id, user)
+        url = "/instances/%s/users/%s" % (base.getid(instance), user)
         return self._get(url, "user")
 
     def update_attributes(self, instance, username, newuserattr=None,