diff --git a/doc/source/write_tests.rst b/doc/source/write_tests.rst
index 67b55aa..63ff61c 100644
--- a/doc/source/write_tests.rst
+++ b/doc/source/write_tests.rst
@@ -112,6 +112,7 @@
         super(TestExampleCase, cls).resource_setup()
         cls.shared_server = cls.servers_client.create_server(...)
 
+.. _credentials:
 
 Allocating Credentials
 ''''''''''''''''''''''
@@ -241,3 +242,70 @@
 inheriting from classes other than the base TestCase in tempest/test.py it is
 worth checking the immediate parent for what is set to determine if your
 class needs to override that setting.
+
+Interacting with Credentials and Clients
+========================================
+
+Once you have your basic TestCase setup you'll want to start writing tests. To
+do that you need to interact with an OpenStack deployment. This section will
+cover how credentials and clients are used inside of Tempest tests.
+
+
+Manager Objects
+---------------
+
+The primary interface with which you interact with both credentials and
+API clients is the client manager object. These objects are created
+automatically by the base test class as part of credential setup. (for more
+details see the previous :ref:`credentials` section) Each manager object is
+initialized with a set of credentials and has each client object already setup
+to use that set of credentials for making all the API requests. Each client is
+accessible as a top level attribute on the manager object. So to start making
+API requests you just access the client's method for making that call and the
+credentials are already setup for you. For example if you wanted to make an API
+call to create a server in Nova::
+
+  from tempest import test
+
+
+  class TestExampleCase(test.BaseTestCase):
+    def test_example_create_server(self):
+      self.os.servers_client.create_server(...)
+
+is all you need to do. As described previously, in the above example the ``self.os``
+is created automatically because the base test class sets the ``credentials``
+attribute to allocate a primary credential set and initializes the client
+manager as ``self.os``. This same access pattern can be used for all of the
+clients in Tempest.
+
+Credentials Objects
+-------------------
+
+In certain cases you need direct access to the credentials. (the most common
+use case would be an API request that takes a user or project id in the request
+body) If you're in a situation where you need to access this you'll need to
+access the ``credentials`` object which is allocated from the configured
+credential provider in the base test class. This is accessible from the manager
+object via the manager's ``credentials`` attribute. For example::
+
+  from tempest import test
+
+
+  class TestExampleCase(test.BaseTestCase):
+    def test_example_create_server(self):
+      credentials = self.os.credentials
+
+The credentials object provides access to all of the credential information you
+would need to make API requests. For example, building off the previous
+example::
+
+  from tempest import test
+
+
+  class TestExampleCase(test.BaseTestCase):
+    def test_example_create_server(self):
+      credentials = self.os.credentials
+      username = credentials.username
+      user_id = credentials.user_id
+      password = credentials.password
+      tenant_id = credentials.tenant_id
diff --git a/tempest/api/compute/admin/test_live_migration.py b/tempest/api/compute/admin/test_live_migration.py
index 0ceb13c..4d0f12a 100644
--- a/tempest/api/compute/admin/test_live_migration.py
+++ b/tempest/api/compute/admin/test_live_migration.py
@@ -162,11 +162,17 @@
 
         # Attach the volume to the server
         self.attach_volume(server, volume, device='/dev/xvdb')
-
+        server = self.admin_servers_client.show_server(server_id)['server']
+        volume_id1 = server["os-extended-volumes:volumes_attached"][0]["id"]
         self._migrate_server_to(server_id, target_host)
         waiters.wait_for_server_status(self.servers_client,
                                        server_id, 'ACTIVE')
+
+        server = self.admin_servers_client.show_server(server_id)['server']
+        volume_id2 = server["os-extended-volumes:volumes_attached"][0]["id"]
+
         self.assertEqual(target_host, self._get_host_for_server(server_id))
+        self.assertEqual(volume_id1, volume_id2)
 
 
 class LiveAutoBlockMigrationV225TestJSON(LiveBlockMigrationTestJSON):
diff --git a/tempest/api/network/test_dhcp_ipv6.py b/tempest/api/network/test_dhcp_ipv6.py
index a7ae765..9d6d700 100644
--- a/tempest/api/network/test_dhcp_ipv6.py
+++ b/tempest/api/network/test_dhcp_ipv6.py
@@ -16,6 +16,7 @@
 import random
 
 import netaddr
+from oslo_utils import netutils
 
 from tempest.api.network import base
 from tempest.common.utils import net_info
@@ -92,8 +93,8 @@
         port_mac = data_utils.rand_mac_address()
         port = self.create_port(self.network, mac_address=port_mac)
         real_ip = next(iter(port['fixed_ips']), None)['ip_address']
-        eui_ip = data_utils.get_ipv6_addr_by_EUI64(subnet['cidr'],
-                                                   port_mac).format()
+        eui_ip = str(netutils.get_ipv6_addr_by_EUI64(
+            subnet['cidr'], port_mac))
         return real_ip, eui_ip
 
     @decorators.idempotent_id('e5517e62-6f16-430d-a672-f80875493d4c')
@@ -188,10 +189,8 @@
                         self.network, **kwargs_dhcp)
                     subnet_slaac = self.create_subnet(self.network, **kwargs)
                 port_mac = data_utils.rand_mac_address()
-                eui_ip = data_utils.get_ipv6_addr_by_EUI64(
-                    subnet_slaac['cidr'],
-                    port_mac
-                ).format()
+                eui_ip = str(netutils.get_ipv6_addr_by_EUI64(
+                    subnet_slaac['cidr'], port_mac))
                 port = self.create_port(self.network, mac_address=port_mac)
                 real_ips = dict([(k['subnet_id'], k['ip_address'])
                                  for k in port['fixed_ips']])
@@ -236,10 +235,8 @@
                         self.network, ip_version=4)
                     subnet_slaac = self.create_subnet(self.network, **kwargs)
                 port_mac = data_utils.rand_mac_address()
-                eui_ip = data_utils.get_ipv6_addr_by_EUI64(
-                    subnet_slaac['cidr'],
-                    port_mac
-                ).format()
+                eui_ip = str(netutils.get_ipv6_addr_by_EUI64(
+                    subnet_slaac['cidr'], port_mac))
                 port = self.create_port(self.network, mac_address=port_mac)
                 real_ips = dict([(k['subnet_id'], k['ip_address'])
                                  for k in port['fixed_ips']])
diff --git a/tempest/tests/fake_config.py b/tempest/tests/fake_config.py
index 4e957a0..ee63684 100644
--- a/tempest/tests/fake_config.py
+++ b/tempest/tests/fake_config.py
@@ -103,5 +103,4 @@
         self._set_attrs()
         self.fake_service1 = cfg.CONF['fake-service1']
         self.fake_service2 = cfg.CONF['fake-service2']
-        print('Services registered')
         self.lock_path = cfg.CONF.oslo_concurrency.lock_path
diff --git a/tempest/tests/lib/common/test_cred_client.py b/tempest/tests/lib/common/test_cred_client.py
index 1cb3103..3dff16f 100644
--- a/tempest/tests/lib/common/test_cred_client.py
+++ b/tempest/tests/lib/common/test_cred_client.py
@@ -73,6 +73,5 @@
 
     def test_delete_project(self):
         self.creds_client.delete_project('fake_id')
-        print(self.projects_client.calls)
         self.projects_client.delete_project.assert_called_once_with(
             'fake_id')