diff --git a/doc/source/write_tests.rst b/doc/source/write_tests.rst
index 8488fb1..2363fa6 100644
--- a/doc/source/write_tests.rst
+++ b/doc/source/write_tests.rst
@@ -99,7 +99,7 @@
            specific situations you should not need to use this.
         """
         super(TestExampleCase, cls).setup_clients()
-        cls.servers_client = cls.os.servers_client
+        cls.servers_client = cls.os_primary.servers_client
 
     @classmethod
     def resource_setup(cls):
@@ -143,10 +143,10 @@
 
 In this example the ``TestExampleAdmin`` TestCase will allocate 2 sets of
 credentials, one regular user and one admin user. The corresponding manager
-objects will be set as class variables cls.os and cls.os_adm respectively. You
-can also allocate a second user by putting **'alt'** in the list too. A set of
-alt credentials are the same as primary but can be used for tests cases that
-need a second user/project.
+objects will be set as class variables ``cls.os_primary`` and ``cls.os_admin``
+respectively. You can also allocate a second user by putting **'alt'** in the
+list too. A set of alt credentials are the same as primary but can be used
+for tests cases that need a second user/project.
 
 You can also specify credentials with specific roles assigned. This is useful
 for cases where there are specific RBAC requirements hard coded into an API.
diff --git a/tempest/api/compute/admin/test_agents.py b/tempest/api/compute/admin/test_agents.py
index 4ae4372..31976ec 100644
--- a/tempest/api/compute/admin/test_agents.py
+++ b/tempest/api/compute/admin/test_agents.py
@@ -23,7 +23,7 @@
     @classmethod
     def setup_clients(cls):
         super(AgentsAdminTestJSON, cls).setup_clients()
-        cls.client = cls.os_adm.agents_client
+        cls.client = cls.os_admin.agents_client
 
     @classmethod
     def resource_setup(cls):
diff --git a/tempest/api/compute/admin/test_aggregates.py b/tempest/api/compute/admin/test_aggregates.py
index 2f5382e..79d03f4 100644
--- a/tempest/api/compute/admin/test_aggregates.py
+++ b/tempest/api/compute/admin/test_aggregates.py
@@ -31,7 +31,7 @@
     @classmethod
     def setup_clients(cls):
         super(AggregatesAdminTestJSON, cls).setup_clients()
-        cls.client = cls.os_adm.aggregates_client
+        cls.client = cls.os_admin.aggregates_client
 
     @classmethod
     def resource_setup(cls):
@@ -40,7 +40,7 @@
         cls.az_name_prefix = 'test_az'
 
         cls.host = None
-        hypers = cls.os_adm.hypervisor_client.list_hypervisors(
+        hypers = cls.os_admin.hypervisor_client.list_hypervisors(
             detail=True)['hypervisors']
 
         if CONF.compute.hypervisor_type:
@@ -226,7 +226,7 @@
         self.client.add_host(aggregate['id'], host=self.host)
         self.addCleanup(self.client.remove_host, aggregate['id'],
                         host=self.host)
-        admin_servers_client = self.os_adm.servers_client
+        admin_servers_client = self.os_admin.servers_client
         server = self.create_test_server(availability_zone=az_name,
                                          wait_until='ACTIVE')
         body = admin_servers_client.show_server(server['id'])['server']
diff --git a/tempest/api/compute/admin/test_aggregates_negative.py b/tempest/api/compute/admin/test_aggregates_negative.py
index 69689a7..41be620 100644
--- a/tempest/api/compute/admin/test_aggregates_negative.py
+++ b/tempest/api/compute/admin/test_aggregates_negative.py
@@ -26,7 +26,7 @@
     @classmethod
     def setup_clients(cls):
         super(AggregatesAdminNegativeTestJSON, cls).setup_clients()
-        cls.client = cls.os_adm.aggregates_client
+        cls.client = cls.os_admin.aggregates_client
         cls.user_client = cls.aggregates_client
 
     @classmethod
@@ -34,7 +34,7 @@
         super(AggregatesAdminNegativeTestJSON, cls).resource_setup()
         cls.aggregate_name_prefix = 'test_aggregate'
 
-        hosts_all = cls.os_adm.hosts_client.list_hosts()['hosts']
+        hosts_all = cls.os_admin.hosts_client.list_hosts()['hosts']
         hosts = ([host['host_name']
                  for host in hosts_all if host['service'] == 'compute'])
         cls.host = hosts[0]
@@ -124,7 +124,7 @@
     @decorators.idempotent_id('0ef07828-12b4-45ba-87cc-41425faf5711')
     def test_aggregate_add_non_exist_host(self):
         # Adding a non-exist host to an aggregate should raise exceptions.
-        hosts_all = self.os_adm.hosts_client.list_hosts()['hosts']
+        hosts_all = self.os_admin.hosts_client.list_hosts()['hosts']
         hosts = map(lambda x: x['host_name'], hosts_all)
         while True:
             non_exist_host = data_utils.rand_name('nonexist_host')
diff --git a/tempest/api/compute/admin/test_auto_allocate_network.py b/tempest/api/compute/admin/test_auto_allocate_network.py
index 7fda732..c4db5e3 100644
--- a/tempest/api/compute/admin/test_auto_allocate_network.py
+++ b/tempest/api/compute/admin/test_auto_allocate_network.py
@@ -66,10 +66,10 @@
     @classmethod
     def setup_clients(cls):
         super(AutoAllocateNetworkTest, cls).setup_clients()
-        cls.networks_client = cls.os.networks_client
-        cls.routers_client = cls.os.routers_client
-        cls.subnets_client = cls.os.subnets_client
-        cls.ports_client = cls.os.ports_client
+        cls.networks_client = cls.os_primary.networks_client
+        cls.routers_client = cls.os_primary.routers_client
+        cls.subnets_client = cls.os_primary.subnets_client
+        cls.ports_client = cls.os_primary.ports_client
 
     @classmethod
     def resource_setup(cls):
diff --git a/tempest/api/compute/admin/test_fixed_ips.py b/tempest/api/compute/admin/test_fixed_ips.py
index 10ed519..1e09eeb 100644
--- a/tempest/api/compute/admin/test_fixed_ips.py
+++ b/tempest/api/compute/admin/test_fixed_ips.py
@@ -33,7 +33,7 @@
     @classmethod
     def setup_clients(cls):
         super(FixedIPsTestJson, cls).setup_clients()
-        cls.client = cls.os_adm.fixed_ips_client
+        cls.client = cls.os_admin.fixed_ips_client
 
     @classmethod
     def resource_setup(cls):
diff --git a/tempest/api/compute/admin/test_fixed_ips_negative.py b/tempest/api/compute/admin/test_fixed_ips_negative.py
index 5134b81..a77011e 100644
--- a/tempest/api/compute/admin/test_fixed_ips_negative.py
+++ b/tempest/api/compute/admin/test_fixed_ips_negative.py
@@ -33,7 +33,7 @@
     @classmethod
     def setup_clients(cls):
         super(FixedIPsNegativeTestJson, cls).setup_clients()
-        cls.client = cls.os_adm.fixed_ips_client
+        cls.client = cls.os_admin.fixed_ips_client
         cls.non_admin_client = cls.fixed_ips_client
 
     @classmethod
diff --git a/tempest/api/compute/admin/test_flavors.py b/tempest/api/compute/admin/test_flavors.py
index 3821895..36ebc25 100644
--- a/tempest/api/compute/admin/test_flavors.py
+++ b/tempest/api/compute/admin/test_flavors.py
@@ -163,7 +163,7 @@
 
         # Verify flavor is not used by other user
         self.assertRaises(lib_exc.BadRequest,
-                          self.os.servers_client.create_server,
+                          self.os_primary.servers_client.create_server,
                           name='test', imageRef=self.image_ref,
                           flavorRef=flavor['id'])
 
diff --git a/tempest/api/compute/admin/test_floating_ips_bulk.py b/tempest/api/compute/admin/test_floating_ips_bulk.py
index f38af56..056b4bd 100644
--- a/tempest/api/compute/admin/test_floating_ips_bulk.py
+++ b/tempest/api/compute/admin/test_floating_ips_bulk.py
@@ -35,7 +35,7 @@
     @classmethod
     def setup_clients(cls):
         super(FloatingIPsBulkAdminTestJSON, cls).setup_clients()
-        cls.client = cls.os_adm.floating_ips_bulk_client
+        cls.client = cls.os_admin.floating_ips_bulk_client
 
     @classmethod
     def resource_setup(cls):
diff --git a/tempest/api/compute/admin/test_hosts.py b/tempest/api/compute/admin/test_hosts.py
index b664955..8e2f6ed 100644
--- a/tempest/api/compute/admin/test_hosts.py
+++ b/tempest/api/compute/admin/test_hosts.py
@@ -23,7 +23,7 @@
     @classmethod
     def setup_clients(cls):
         super(HostsAdminTestJSON, cls).setup_clients()
-        cls.client = cls.os_adm.hosts_client
+        cls.client = cls.os_admin.hosts_client
 
     @decorators.idempotent_id('9bfaf98d-e2cb-44b0-a07e-2558b2821e4f')
     def test_list_hosts(self):
diff --git a/tempest/api/compute/admin/test_hosts_negative.py b/tempest/api/compute/admin/test_hosts_negative.py
index 684f656..5bd8104 100644
--- a/tempest/api/compute/admin/test_hosts_negative.py
+++ b/tempest/api/compute/admin/test_hosts_negative.py
@@ -23,8 +23,8 @@
     @classmethod
     def setup_clients(cls):
         super(HostsAdminNegativeTestJSON, cls).setup_clients()
-        cls.client = cls.os_adm.hosts_client
-        cls.non_admin_client = cls.os.hosts_client
+        cls.client = cls.os_admin.hosts_client
+        cls.non_admin_client = cls.os_primary.hosts_client
 
     @classmethod
     def resource_setup(cls):
diff --git a/tempest/api/compute/admin/test_hypervisor.py b/tempest/api/compute/admin/test_hypervisor.py
index e0e5a29..4544267 100644
--- a/tempest/api/compute/admin/test_hypervisor.py
+++ b/tempest/api/compute/admin/test_hypervisor.py
@@ -23,7 +23,7 @@
     @classmethod
     def setup_clients(cls):
         super(HypervisorAdminTestJSON, cls).setup_clients()
-        cls.client = cls.os_adm.hypervisor_client
+        cls.client = cls.os_admin.hypervisor_client
 
     def _list_hypervisors(self):
         # List of hypervisors
diff --git a/tempest/api/compute/admin/test_hypervisor_negative.py b/tempest/api/compute/admin/test_hypervisor_negative.py
index 2addce9..af87287 100644
--- a/tempest/api/compute/admin/test_hypervisor_negative.py
+++ b/tempest/api/compute/admin/test_hypervisor_negative.py
@@ -25,7 +25,7 @@
     @classmethod
     def setup_clients(cls):
         super(HypervisorAdminNegativeTestJSON, cls).setup_clients()
-        cls.client = cls.os_adm.hypervisor_client
+        cls.client = cls.os_admin.hypervisor_client
         cls.non_adm_client = cls.hypervisor_client
 
     def _list_hypervisors(self):
diff --git a/tempest/api/compute/admin/test_instance_usage_audit_log.py b/tempest/api/compute/admin/test_instance_usage_audit_log.py
index b613a26..e4a2ffd 100644
--- a/tempest/api/compute/admin/test_instance_usage_audit_log.py
+++ b/tempest/api/compute/admin/test_instance_usage_audit_log.py
@@ -26,7 +26,7 @@
     @classmethod
     def setup_clients(cls):
         super(InstanceUsageAuditLogTestJSON, cls).setup_clients()
-        cls.adm_client = cls.os_adm.instance_usages_audit_log_client
+        cls.adm_client = cls.os_admin.instance_usages_audit_log_client
 
     @decorators.idempotent_id('25319919-33d9-424f-9f99-2c203ee48b9d')
     def test_list_instance_usage_audit_logs(self):
diff --git a/tempest/api/compute/admin/test_instance_usage_audit_log_negative.py b/tempest/api/compute/admin/test_instance_usage_audit_log_negative.py
index 92235cc..de8e221 100644
--- a/tempest/api/compute/admin/test_instance_usage_audit_log_negative.py
+++ b/tempest/api/compute/admin/test_instance_usage_audit_log_negative.py
@@ -27,7 +27,7 @@
     @classmethod
     def setup_clients(cls):
         super(InstanceUsageAuditLogNegativeTestJSON, cls).setup_clients()
-        cls.adm_client = cls.os_adm.instance_usages_audit_log_client
+        cls.adm_client = cls.os_admin.instance_usages_audit_log_client
 
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('a9d33178-d2c9-4131-ad3b-f4ca8d0308a2')
diff --git a/tempest/api/compute/admin/test_keypairs_v210.py b/tempest/api/compute/admin/test_keypairs_v210.py
index b6c2c3d..e24c7c1 100644
--- a/tempest/api/compute/admin/test_keypairs_v210.py
+++ b/tempest/api/compute/admin/test_keypairs_v210.py
@@ -25,8 +25,8 @@
     @classmethod
     def setup_clients(cls):
         super(KeyPairsV210TestJSON, cls).setup_clients()
-        cls.client = cls.os_adm.keypairs_client
-        cls.non_admin_client = cls.os.keypairs_client
+        cls.client = cls.os_admin.keypairs_client
+        cls.non_admin_client = cls.os_primary.keypairs_client
 
     def _create_and_check_keypairs(self, user_id):
         key_list = list()
diff --git a/tempest/api/compute/admin/test_live_migration.py b/tempest/api/compute/admin/test_live_migration.py
index 8344103..3859e64 100644
--- a/tempest/api/compute/admin/test_live_migration.py
+++ b/tempest/api/compute/admin/test_live_migration.py
@@ -48,8 +48,8 @@
     @classmethod
     def setup_clients(cls):
         super(LiveBlockMigrationTestJSON, cls).setup_clients()
-        cls.admin_hosts_client = cls.os_adm.hosts_client
-        cls.admin_migration_client = cls.os_adm.migrations_client
+        cls.admin_hosts_client = cls.os_admin.hosts_client
+        cls.admin_migration_client = cls.os_admin.migrations_client
 
     @classmethod
     def _get_compute_hostnames(cls):
diff --git a/tempest/api/compute/admin/test_migrations.py b/tempest/api/compute/admin/test_migrations.py
index df8b175..a626ebb 100644
--- a/tempest/api/compute/admin/test_migrations.py
+++ b/tempest/api/compute/admin/test_migrations.py
@@ -29,7 +29,7 @@
     @classmethod
     def setup_clients(cls):
         super(MigrationsAdminTest, cls).setup_clients()
-        cls.client = cls.os_adm.migrations_client
+        cls.client = cls.os_admin.migrations_client
 
     @decorators.idempotent_id('75c0b83d-72a0-4cf8-a153-631e83e7d53f')
     def test_list_migrations(self):
diff --git a/tempest/api/compute/admin/test_networks.py b/tempest/api/compute/admin/test_networks.py
index 12ae864..0ea0a78 100644
--- a/tempest/api/compute/admin/test_networks.py
+++ b/tempest/api/compute/admin/test_networks.py
@@ -30,7 +30,7 @@
     @classmethod
     def setup_clients(cls):
         super(NetworksTest, cls).setup_clients()
-        cls.client = cls.os_adm.compute_networks_client
+        cls.client = cls.os_admin.compute_networks_client
 
     @decorators.idempotent_id('d206d211-8912-486f-86e2-a9d090d1f416')
     def test_get_network(self):
diff --git a/tempest/api/compute/admin/test_quotas.py b/tempest/api/compute/admin/test_quotas.py
index c9d7722..937540e 100644
--- a/tempest/api/compute/admin/test_quotas.py
+++ b/tempest/api/compute/admin/test_quotas.py
@@ -35,7 +35,7 @@
     @classmethod
     def setup_clients(cls):
         super(QuotasAdminTestJSON, cls).setup_clients()
-        cls.adm_client = cls.os_adm.quotas_client
+        cls.adm_client = cls.os_admin.quotas_client
 
     @classmethod
     def resource_setup(cls):
@@ -153,7 +153,7 @@
     @classmethod
     def resource_setup(cls):
         super(QuotaClassesAdminTestJSON, cls).resource_setup()
-        cls.adm_client = cls.os_adm.quota_classes_client
+        cls.adm_client = cls.os_admin.quota_classes_client
 
     def _restore_default_quotas(self, original_defaults):
         LOG.debug("restoring quota class defaults")
diff --git a/tempest/api/compute/admin/test_quotas_negative.py b/tempest/api/compute/admin/test_quotas_negative.py
index cc4654d..747f320 100644
--- a/tempest/api/compute/admin/test_quotas_negative.py
+++ b/tempest/api/compute/admin/test_quotas_negative.py
@@ -28,8 +28,8 @@
     @classmethod
     def setup_clients(cls):
         super(QuotasAdminNegativeTestJSON, cls).setup_clients()
-        cls.client = cls.os.quotas_client
-        cls.adm_client = cls.os_adm.quotas_client
+        cls.client = cls.os_primary.quotas_client
+        cls.adm_client = cls.os_admin.quotas_client
         cls.sg_client = cls.security_groups_client
         cls.sgr_client = cls.security_group_rules_client
 
diff --git a/tempest/api/compute/admin/test_security_group_default_rules.py b/tempest/api/compute/admin/test_security_group_default_rules.py
index ab97bd4..6c7cde2 100644
--- a/tempest/api/compute/admin/test_security_group_default_rules.py
+++ b/tempest/api/compute/admin/test_security_group_default_rules.py
@@ -38,7 +38,7 @@
     @classmethod
     def setup_clients(cls):
         super(SecurityGroupDefaultRulesTest, cls).setup_clients()
-        cls.adm_client = cls.os_adm.security_group_default_rules_client
+        cls.adm_client = cls.os_admin.security_group_default_rules_client
 
     def _create_security_group_default_rules(self, ip_protocol='tcp',
                                              from_port=22, to_port=22,
diff --git a/tempest/api/compute/admin/test_security_groups.py b/tempest/api/compute/admin/test_security_groups.py
index b4d0f2a..8abe03a 100644
--- a/tempest/api/compute/admin/test_security_groups.py
+++ b/tempest/api/compute/admin/test_security_groups.py
@@ -24,7 +24,7 @@
     @classmethod
     def setup_clients(cls):
         super(SecurityGroupsTestAdminJSON, cls).setup_clients()
-        cls.adm_client = cls.os_adm.compute_security_groups_client
+        cls.adm_client = cls.os_admin.compute_security_groups_client
         cls.client = cls.security_groups_client
 
     def _delete_security_group(self, securitygroup_id, admin=True):
diff --git a/tempest/api/compute/admin/test_servers.py b/tempest/api/compute/admin/test_servers.py
index aff61bf..98bf4bf 100644
--- a/tempest/api/compute/admin/test_servers.py
+++ b/tempest/api/compute/admin/test_servers.py
@@ -26,7 +26,7 @@
     @classmethod
     def setup_clients(cls):
         super(ServersAdminTestJSON, cls).setup_clients()
-        cls.client = cls.os_adm.servers_client
+        cls.client = cls.os_admin.servers_client
         cls.non_admin_client = cls.servers_client
 
     @classmethod
diff --git a/tempest/api/compute/admin/test_servers_negative.py b/tempest/api/compute/admin/test_servers_negative.py
index 677972e..b0f18d7 100644
--- a/tempest/api/compute/admin/test_servers_negative.py
+++ b/tempest/api/compute/admin/test_servers_negative.py
@@ -31,9 +31,9 @@
     @classmethod
     def setup_clients(cls):
         super(ServersAdminNegativeTestJSON, cls).setup_clients()
-        cls.client = cls.os_adm.servers_client
+        cls.client = cls.os_admin.servers_client
         cls.non_adm_client = cls.servers_client
-        cls.quotas_client = cls.os_adm.quotas_client
+        cls.quotas_client = cls.os_admin.quotas_client
 
     @classmethod
     def resource_setup(cls):
diff --git a/tempest/api/compute/admin/test_servers_on_multinodes.py b/tempest/api/compute/admin/test_servers_on_multinodes.py
index 6b92273..6a2e5e9 100644
--- a/tempest/api/compute/admin/test_servers_on_multinodes.py
+++ b/tempest/api/compute/admin/test_servers_on_multinodes.py
@@ -33,7 +33,7 @@
                 "Less than 2 compute nodes, skipping multi-nodes test.")
 
     def _get_host(self, server_id):
-        return self.os_adm.servers_client.show_server(
+        return self.os_admin.servers_client.show_server(
             server_id)['server']['OS-EXT-SRV-ATTR:host']
 
     @decorators.idempotent_id('26a9d5df-6890-45f2-abc4-a659290cb130')
diff --git a/tempest/api/compute/admin/test_services.py b/tempest/api/compute/admin/test_services.py
index c1c1c82..1dfc13e 100644
--- a/tempest/api/compute/admin/test_services.py
+++ b/tempest/api/compute/admin/test_services.py
@@ -24,7 +24,7 @@
     @classmethod
     def setup_clients(cls):
         super(ServicesAdminTestJSON, cls).setup_clients()
-        cls.client = cls.os_adm.services_client
+        cls.client = cls.os_admin.services_client
 
     @decorators.idempotent_id('5be41ef4-53d1-41cc-8839-5c2a48a1b283')
     def test_list_services(self):
diff --git a/tempest/api/compute/admin/test_services_negative.py b/tempest/api/compute/admin/test_services_negative.py
index 1edfc89..38bb5ec 100644
--- a/tempest/api/compute/admin/test_services_negative.py
+++ b/tempest/api/compute/admin/test_services_negative.py
@@ -23,7 +23,7 @@
     @classmethod
     def setup_clients(cls):
         super(ServicesAdminNegativeTestJSON, cls).setup_clients()
-        cls.client = cls.os_adm.services_client
+        cls.client = cls.os_admin.services_client
         cls.non_admin_client = cls.services_client
 
     @decorators.attr(type=['negative'])
diff --git a/tempest/api/compute/admin/test_simple_tenant_usage.py b/tempest/api/compute/admin/test_simple_tenant_usage.py
index ef55584..d4c60b3 100644
--- a/tempest/api/compute/admin/test_simple_tenant_usage.py
+++ b/tempest/api/compute/admin/test_simple_tenant_usage.py
@@ -30,8 +30,8 @@
     @classmethod
     def setup_clients(cls):
         super(TenantUsagesTestJSON, cls).setup_clients()
-        cls.adm_client = cls.os_adm.tenant_usages_client
-        cls.client = cls.os.tenant_usages_client
+        cls.adm_client = cls.os_admin.tenant_usages_client
+        cls.client = cls.os_primary.tenant_usages_client
 
     @classmethod
     def resource_setup(cls):
diff --git a/tempest/api/compute/admin/test_simple_tenant_usage_negative.py b/tempest/api/compute/admin/test_simple_tenant_usage_negative.py
index 222d28c..cb60b8d 100644
--- a/tempest/api/compute/admin/test_simple_tenant_usage_negative.py
+++ b/tempest/api/compute/admin/test_simple_tenant_usage_negative.py
@@ -25,8 +25,8 @@
     @classmethod
     def setup_clients(cls):
         super(TenantUsagesNegativeTestJSON, cls).setup_clients()
-        cls.adm_client = cls.os_adm.tenant_usages_client
-        cls.client = cls.os.tenant_usages_client
+        cls.adm_client = cls.os_admin.tenant_usages_client
+        cls.client = cls.os_primary.tenant_usages_client
 
     @classmethod
     def resource_setup(cls):
diff --git a/tempest/api/compute/base.py b/tempest/api/compute/base.py
index 1736463..a5ee716 100644
--- a/tempest/api/compute/base.py
+++ b/tempest/api/compute/base.py
@@ -63,38 +63,41 @@
     @classmethod
     def setup_clients(cls):
         super(BaseV2ComputeTest, cls).setup_clients()
-        cls.servers_client = cls.os.servers_client
-        cls.server_groups_client = cls.os.server_groups_client
-        cls.flavors_client = cls.os.flavors_client
-        cls.compute_images_client = cls.os.compute_images_client
-        cls.extensions_client = cls.os.extensions_client
-        cls.floating_ip_pools_client = cls.os.floating_ip_pools_client
-        cls.floating_ips_client = cls.os.compute_floating_ips_client
-        cls.keypairs_client = cls.os.keypairs_client
+        cls.servers_client = cls.os_primary.servers_client
+        cls.server_groups_client = cls.os_primary.server_groups_client
+        cls.flavors_client = cls.os_primary.flavors_client
+        cls.compute_images_client = cls.os_primary.compute_images_client
+        cls.extensions_client = cls.os_primary.extensions_client
+        cls.floating_ip_pools_client = cls.os_primary.floating_ip_pools_client
+        cls.floating_ips_client = cls.os_primary.compute_floating_ips_client
+        cls.keypairs_client = cls.os_primary.keypairs_client
         cls.security_group_rules_client = (
-            cls.os.compute_security_group_rules_client)
-        cls.security_groups_client = cls.os.compute_security_groups_client
-        cls.quotas_client = cls.os.quotas_client
-        cls.compute_networks_client = cls.os.compute_networks_client
-        cls.limits_client = cls.os.limits_client
-        cls.volumes_extensions_client = cls.os.volumes_extensions_client
-        cls.snapshots_extensions_client = cls.os.snapshots_extensions_client
-        cls.interfaces_client = cls.os.interfaces_client
-        cls.fixed_ips_client = cls.os.fixed_ips_client
-        cls.availability_zone_client = cls.os.availability_zone_client
-        cls.agents_client = cls.os.agents_client
-        cls.aggregates_client = cls.os.aggregates_client
-        cls.services_client = cls.os.services_client
+            cls.os_primary.compute_security_group_rules_client)
+        cls.security_groups_client =\
+            cls.os_primary.compute_security_groups_client
+        cls.quotas_client = cls.os_primary.quotas_client
+        cls.compute_networks_client = cls.os_primary.compute_networks_client
+        cls.limits_client = cls.os_primary.limits_client
+        cls.volumes_extensions_client =\
+            cls.os_primary.volumes_extensions_client
+        cls.snapshots_extensions_client =\
+            cls.os_primary.snapshots_extensions_client
+        cls.interfaces_client = cls.os_primary.interfaces_client
+        cls.fixed_ips_client = cls.os_primary.fixed_ips_client
+        cls.availability_zone_client = cls.os_primary.availability_zone_client
+        cls.agents_client = cls.os_primary.agents_client
+        cls.aggregates_client = cls.os_primary.aggregates_client
+        cls.services_client = cls.os_primary.services_client
         cls.instance_usages_audit_log_client = (
-            cls.os.instance_usages_audit_log_client)
-        cls.hypervisor_client = cls.os.hypervisor_client
-        cls.certificates_client = cls.os.certificates_client
-        cls.migrations_client = cls.os.migrations_client
+            cls.os_primary.instance_usages_audit_log_client)
+        cls.hypervisor_client = cls.os_primary.hypervisor_client
+        cls.certificates_client = cls.os_primary.certificates_client
+        cls.migrations_client = cls.os_primary.migrations_client
         cls.security_group_default_rules_client = (
-            cls.os.security_group_default_rules_client)
-        cls.versions_client = cls.os.compute_versions_client
+            cls.os_primary.security_group_default_rules_client)
+        cls.versions_client = cls.os_primary.compute_versions_client
 
-        cls.volumes_client = cls.os.volumes_v2_client
+        cls.volumes_client = cls.os_primary.volumes_v2_client
 
     @classmethod
     def resource_setup(cls):
@@ -470,9 +473,9 @@
     def setup_clients(cls):
         super(BaseV2ComputeAdminTest, cls).setup_clients()
         cls.availability_zone_admin_client = (
-            cls.os_adm.availability_zone_client)
-        cls.admin_flavors_client = cls.os_adm.flavors_client
-        cls.admin_servers_client = cls.os_adm.servers_client
+            cls.os_admin.availability_zone_client)
+        cls.admin_flavors_client = cls.os_admin.flavors_client
+        cls.admin_servers_client = cls.os_admin.servers_client
 
     def create_flavor(self, ram, vcpus, disk, name=None,
                       is_public='True', **kwargs):
diff --git a/tempest/api/compute/flavors/test_flavors_negative.py b/tempest/api/compute/flavors/test_flavors_negative.py
index 91e9684..ebb9d2e 100644
--- a/tempest/api/compute/flavors/test_flavors_negative.py
+++ b/tempest/api/compute/flavors/test_flavors_negative.py
@@ -34,9 +34,9 @@
     def setup_clients(cls):
         super(FlavorsV2NegativeTest, cls).setup_clients()
         if CONF.image_feature_enabled.api_v1:
-            cls.images_client = cls.os.image_client
+            cls.images_client = cls.os_primary.image_client
         elif CONF.image_feature_enabled.api_v2:
-            cls.images_client = cls.os.image_client_v2
+            cls.images_client = cls.os_primary.image_client_v2
         else:
             raise lib_exc.InvalidConfiguration(
                 'Either api_v1 or api_v2 must be True in '
diff --git a/tempest/api/compute/images/test_image_metadata.py b/tempest/api/compute/images/test_image_metadata.py
index dcc44d8..8d503dc 100644
--- a/tempest/api/compute/images/test_image_metadata.py
+++ b/tempest/api/compute/images/test_image_metadata.py
@@ -42,9 +42,9 @@
         # prefer glance v1 for the compute API tests since the compute image
         # API proxy was written for glance v1.
         if CONF.image_feature_enabled.api_v1:
-            cls.glance_client = cls.os.image_client
+            cls.glance_client = cls.os_primary.image_client
         elif CONF.image_feature_enabled.api_v2:
-            cls.glance_client = cls.os.image_client_v2
+            cls.glance_client = cls.os_primary.image_client_v2
         else:
             raise exceptions.InvalidConfiguration(
                 'Either api_v1 or api_v2 must be True in '
diff --git a/tempest/api/compute/images/test_list_image_filters.py b/tempest/api/compute/images/test_list_image_filters.py
index 7168a8c..6677aa2 100644
--- a/tempest/api/compute/images/test_list_image_filters.py
+++ b/tempest/api/compute/images/test_list_image_filters.py
@@ -46,9 +46,9 @@
         # prefer glance v1 for the compute API tests since the compute image
         # API proxy was written for glance v1.
         if CONF.image_feature_enabled.api_v1:
-            cls.glance_client = cls.os.image_client
+            cls.glance_client = cls.os_primary.image_client
         elif CONF.image_feature_enabled.api_v2:
-            cls.glance_client = cls.os.image_client_v2
+            cls.glance_client = cls.os_primary.image_client_v2
         else:
             raise exceptions.InvalidConfiguration(
                 'Either api_v1 or api_v2 must be True in '
diff --git a/tempest/api/compute/servers/test_attach_interfaces.py b/tempest/api/compute/servers/test_attach_interfaces.py
index 06a47d1..e50b29a 100644
--- a/tempest/api/compute/servers/test_attach_interfaces.py
+++ b/tempest/api/compute/servers/test_attach_interfaces.py
@@ -46,8 +46,8 @@
     @classmethod
     def setup_clients(cls):
         super(AttachInterfacesTestJSON, cls).setup_clients()
-        cls.subnets_client = cls.os.subnets_client
-        cls.ports_client = cls.os.ports_client
+        cls.subnets_client = cls.os_primary.subnets_client
+        cls.ports_client = cls.os_primary.ports_client
 
     # TODO(mriedem): move this into a common waiters utility module
     def wait_for_port_detach(self, port_id):
@@ -231,7 +231,7 @@
         network_id = ifs[0]['net_id']
         self.servers_client.add_fixed_ip(server['id'], networkId=network_id)
         # Remove the fixed IP from server.
-        server_detail = self.os.servers_client.show_server(
+        server_detail = self.os_primary.servers_client.show_server(
             server['id'])['server']
         # Get the Fixed IP from server.
         fixed_ip = None
diff --git a/tempest/api/compute/servers/test_create_server.py b/tempest/api/compute/servers/test_create_server.py
index d44967e..db42c6c 100644
--- a/tempest/api/compute/servers/test_create_server.py
+++ b/tempest/api/compute/servers/test_create_server.py
@@ -38,8 +38,8 @@
     def setup_clients(cls):
         super(ServersTestJSON, cls).setup_clients()
         cls.client = cls.servers_client
-        cls.networks_client = cls.os.networks_client
-        cls.subnets_client = cls.os.subnets_client
+        cls.networks_client = cls.os_primary.networks_client
+        cls.subnets_client = cls.os_primary.subnets_client
 
     @classmethod
     def resource_setup(cls):
diff --git a/tempest/api/compute/servers/test_device_tagging.py b/tempest/api/compute/servers/test_device_tagging.py
index 6e5d42f..9ab508d 100644
--- a/tempest/api/compute/servers/test_device_tagging.py
+++ b/tempest/api/compute/servers/test_device_tagging.py
@@ -55,10 +55,10 @@
     @classmethod
     def setup_clients(cls):
         super(DeviceTaggingTest, cls).setup_clients()
-        cls.networks_client = cls.os.networks_client
-        cls.ports_client = cls.os.ports_client
-        cls.subnets_client = cls.os.subnets_client
-        cls.interfaces_client = cls.os.interfaces_client
+        cls.networks_client = cls.os_primary.networks_client
+        cls.ports_client = cls.os_primary.ports_client
+        cls.subnets_client = cls.os_primary.subnets_client
+        cls.interfaces_client = cls.os_primary.interfaces_client
 
     @classmethod
     def setup_credentials(cls):
diff --git a/tempest/api/compute/servers/test_disk_config.py b/tempest/api/compute/servers/test_disk_config.py
index 4709180..bc48069 100644
--- a/tempest/api/compute/servers/test_disk_config.py
+++ b/tempest/api/compute/servers/test_disk_config.py
@@ -35,7 +35,7 @@
     @classmethod
     def setup_clients(cls):
         super(ServerDiskConfigTestJSON, cls).setup_clients()
-        cls.client = cls.os.servers_client
+        cls.client = cls.os_primary.servers_client
 
     def _update_server_with_disk_config(self, server_id, disk_config):
         server = self.client.show_server(server_id)['server']
diff --git a/tempest/api/compute/servers/test_server_actions.py b/tempest/api/compute/servers/test_server_actions.py
index 751d33a..8808510 100644
--- a/tempest/api/compute/servers/test_server_actions.py
+++ b/tempest/api/compute/servers/test_server_actions.py
@@ -337,9 +337,9 @@
         # prefer glance v1 for the compute API tests since the compute image
         # API proxy was written for glance v1.
         if CONF.image_feature_enabled.api_v1:
-            glance_client = self.os.image_client
+            glance_client = self.os_primary.image_client
         elif CONF.image_feature_enabled.api_v2:
-            glance_client = self.os.image_client_v2
+            glance_client = self.os_primary.image_client_v2
         else:
             raise lib_exc.InvalidConfiguration(
                 'Either api_v1 or api_v2 must be True in '
diff --git a/tempest/api/compute/test_networks.py b/tempest/api/compute/test_networks.py
index 4d21fed..b8c79d7 100644
--- a/tempest/api/compute/test_networks.py
+++ b/tempest/api/compute/test_networks.py
@@ -29,7 +29,7 @@
     @classmethod
     def setup_clients(cls):
         super(ComputeNetworksTest, cls).setup_clients()
-        cls.client = cls.os.compute_networks_client
+        cls.client = cls.os_primary.compute_networks_client
 
     @decorators.idempotent_id('3fe07175-312e-49a5-a623-5f52eeada4c2')
     def test_list_networks(self):
diff --git a/tempest/api/compute/test_tenant_networks.py b/tempest/api/compute/test_tenant_networks.py
index b203c7e..18c5d38 100644
--- a/tempest/api/compute/test_tenant_networks.py
+++ b/tempest/api/compute/test_tenant_networks.py
@@ -22,7 +22,7 @@
     @classmethod
     def resource_setup(cls):
         super(ComputeTenantNetworksTest, cls).resource_setup()
-        cls.client = cls.os.tenant_networks_client
+        cls.client = cls.os_primary.tenant_networks_client
         cls.network = cls.get_tenant_network()
 
     @classmethod
diff --git a/tempest/api/identity/admin/v3/test_tokens.py b/tempest/api/identity/admin/v3/test_tokens.py
index 1a9502a..491a74d 100644
--- a/tempest/api/identity/admin/v3/test_tokens.py
+++ b/tempest/api/identity/admin/v3/test_tokens.py
@@ -146,7 +146,7 @@
     @decorators.idempotent_id('08ed85ce-2ba8-4864-b442-bcc61f16ae89')
     def test_get_available_project_scopes(self):
         manager_project_id = self.manager.credentials.project_id
-        admin_user_id = self.os_adm.credentials.user_id
+        admin_user_id = self.os_admin.credentials.user_id
         admin_role_id = self.get_role_by_name(CONF.identity.admin_role)['id']
 
         # Grant the user the role on both projects.
@@ -156,7 +156,7 @@
             self.roles_client.delete_role_from_user_on_project,
             manager_project_id, admin_user_id, admin_role_id)
 
-        assigned_project_ids = [self.os_adm.credentials.project_id,
+        assigned_project_ids = [self.os_admin.credentials.project_id,
                                 manager_project_id]
 
         # Get available project scopes
diff --git a/tempest/api/identity/admin/v3/test_trusts.py b/tempest/api/identity/admin/v3/test_trusts.py
index 0a163fc..27163cc 100644
--- a/tempest/api/identity/admin/v3/test_trusts.py
+++ b/tempest/api/identity/admin/v3/test_trusts.py
@@ -278,9 +278,9 @@
         # Listing trusts can be done by trustor, by trustee, or without
         # any filter if scoped to a project, so we must ensure token scope is
         # project for this test.
-        original_scope = self.os_adm.auth_provider.scope
-        set_scope(self.os_adm.auth_provider, 'project')
-        self.addCleanup(set_scope, self.os_adm.auth_provider, original_scope)
+        original_scope = self.os_admin.auth_provider.scope
+        set_scope(self.os_admin.auth_provider, 'project')
+        self.addCleanup(set_scope, self.os_admin.auth_provider, original_scope)
         trusts_get = self.trusts_client.list_trusts()['trusts']
         trusts = [t for t in trusts_get
                   if t['id'] == self.trust_id]
diff --git a/tempest/api/identity/admin/v3/test_users.py b/tempest/api/identity/admin/v3/test_users.py
index 4f271cb..751962f 100644
--- a/tempest/api/identity/admin/v3/test_users.py
+++ b/tempest/api/identity/admin/v3/test_users.py
@@ -147,8 +147,8 @@
                           'Security compliance not available.')
     @decorators.idempotent_id('568cd46c-ee6c-4ab4-a33a-d3791931979e')
     def test_password_history_not_enforced_in_admin_reset(self):
-        old_password = self.os.credentials.password
-        user_id = self.os.credentials.user_id
+        old_password = self.os_primary.credentials.password
+        user_id = self.os_primary.credentials.user_id
 
         new_password = data_utils.rand_password()
         self.users_client.update_user(user_id, password=new_password)
diff --git a/tempest/api/identity/base.py b/tempest/api/identity/base.py
index 10121d9..785485b 100644
--- a/tempest/api/identity/base.py
+++ b/tempest/api/identity/base.py
@@ -107,10 +107,10 @@
     @classmethod
     def setup_clients(cls):
         super(BaseIdentityV2Test, cls).setup_clients()
-        cls.non_admin_client = cls.os.identity_public_client
-        cls.non_admin_token_client = cls.os.token_client
-        cls.non_admin_tenants_client = cls.os.tenants_public_client
-        cls.non_admin_users_client = cls.os.users_public_client
+        cls.non_admin_client = cls.os_primary.identity_public_client
+        cls.non_admin_token_client = cls.os_primary.token_client
+        cls.non_admin_tenants_client = cls.os_primary.tenants_public_client
+        cls.non_admin_users_client = cls.os_primary.users_public_client
 
 
 class BaseIdentityV2AdminTest(BaseIdentityV2Test):
@@ -135,17 +135,17 @@
     @classmethod
     def setup_clients(cls):
         super(BaseIdentityV2AdminTest, cls).setup_clients()
-        cls.client = cls.os_adm.identity_client
-        cls.non_admin_client = cls.os.identity_client
-        cls.token_client = cls.os_adm.token_client
-        cls.tenants_client = cls.os_adm.tenants_client
-        cls.non_admin_tenants_client = cls.os.tenants_client
-        cls.roles_client = cls.os_adm.roles_client
-        cls.non_admin_roles_client = cls.os.roles_client
-        cls.users_client = cls.os_adm.users_client
-        cls.non_admin_users_client = cls.os.users_client
-        cls.services_client = cls.os_adm.identity_services_client
-        cls.endpoints_client = cls.os_adm.endpoints_client
+        cls.client = cls.os_admin.identity_client
+        cls.non_admin_client = cls.os_primary.identity_client
+        cls.token_client = cls.os_admin.token_client
+        cls.tenants_client = cls.os_admin.tenants_client
+        cls.non_admin_tenants_client = cls.os_primary.tenants_client
+        cls.roles_client = cls.os_admin.roles_client
+        cls.non_admin_roles_client = cls.os_primary.roles_client
+        cls.users_client = cls.os_admin.users_client
+        cls.non_admin_users_client = cls.os_primary.users_client
+        cls.services_client = cls.os_admin.identity_services_client
+        cls.endpoints_client = cls.os_admin.endpoints_client
 
     @classmethod
     def resource_setup(cls):
@@ -183,11 +183,12 @@
     @classmethod
     def setup_clients(cls):
         super(BaseIdentityV3Test, cls).setup_clients()
-        cls.non_admin_client = cls.os.identity_v3_client
-        cls.non_admin_users_client = cls.os.users_v3_client
-        cls.non_admin_token = cls.os.token_v3_client
-        cls.non_admin_projects_client = cls.os.projects_client
-        cls.non_admin_versions_client = cls.os.identity_versions_v3_client
+        cls.non_admin_client = cls.os_primary.identity_v3_client
+        cls.non_admin_users_client = cls.os_primary.users_v3_client
+        cls.non_admin_token = cls.os_primary.token_v3_client
+        cls.non_admin_projects_client = cls.os_primary.projects_client
+        cls.non_admin_versions_client =\
+            cls.os_primary.identity_versions_v3_client
 
 
 class BaseIdentityV3AdminTest(BaseIdentityV3Test):
@@ -206,30 +207,31 @@
     @classmethod
     def setup_clients(cls):
         super(BaseIdentityV3AdminTest, cls).setup_clients()
-        cls.client = cls.os_adm.identity_v3_client
-        cls.domains_client = cls.os_adm.domains_client
-        cls.users_client = cls.os_adm.users_v3_client
-        cls.trusts_client = cls.os_adm.trusts_client
-        cls.roles_client = cls.os_adm.roles_v3_client
-        cls.inherited_roles_client = cls.os_adm.inherited_roles_client
-        cls.token = cls.os_adm.token_v3_client
-        cls.endpoints_client = cls.os_adm.endpoints_v3_client
-        cls.regions_client = cls.os_adm.regions_client
-        cls.services_client = cls.os_adm.identity_services_v3_client
-        cls.policies_client = cls.os_adm.policies_client
-        cls.creds_client = cls.os_adm.credentials_client
-        cls.groups_client = cls.os_adm.groups_client
-        cls.projects_client = cls.os_adm.projects_client
+        cls.client = cls.os_admin.identity_v3_client
+        cls.domains_client = cls.os_admin.domains_client
+        cls.users_client = cls.os_admin.users_v3_client
+        cls.trusts_client = cls.os_admin.trusts_client
+        cls.roles_client = cls.os_admin.roles_v3_client
+        cls.inherited_roles_client = cls.os_admin.inherited_roles_client
+        cls.token = cls.os_admin.token_v3_client
+        cls.endpoints_client = cls.os_admin.endpoints_v3_client
+        cls.regions_client = cls.os_admin.regions_client
+        cls.services_client = cls.os_admin.identity_services_v3_client
+        cls.policies_client = cls.os_admin.policies_client
+        cls.creds_client = cls.os_admin.credentials_client
+        cls.groups_client = cls.os_admin.groups_client
+        cls.projects_client = cls.os_admin.projects_client
         cls.role_assignments = cls.os_admin.role_assignments_client
-        cls.oauth_consumers_client = cls.os_adm.oauth_consumers_client
-        cls.domain_config_client = cls.os_adm.domain_config_client
-        cls.endpoint_filter_client = cls.os_adm.endpoint_filter_client
+        cls.oauth_consumers_client = cls.os_admin.oauth_consumers_client
+        cls.domain_config_client = cls.os_admin.domain_config_client
+        cls.endpoint_filter_client = cls.os_admin.endpoint_filter_client
+
         if CONF.identity.admin_domain_scope:
             # NOTE(andreaf) When keystone policy requires it, the identity
             # admin clients for these tests shall use 'domain' scoped tokens.
             # As the client manager is already created by the base class,
             # we set the scope for the inner auth provider.
-            cls.os_adm.auth_provider.scope = 'domain'
+            cls.os_admin.auth_provider.scope = 'domain'
 
     @classmethod
     def disable_user(cls, user_name, domain_id=None):
diff --git a/tempest/api/identity/v2/test_ec2_credentials.py b/tempest/api/identity/v2/test_ec2_credentials.py
index 7a0f3d7..599b784 100644
--- a/tempest/api/identity/v2/test_ec2_credentials.py
+++ b/tempest/api/identity/v2/test_ec2_credentials.py
@@ -31,7 +31,7 @@
     @classmethod
     def resource_setup(cls):
         super(EC2CredentialsTest, cls).resource_setup()
-        cls.creds = cls.os.credentials
+        cls.creds = cls.os_primary.credentials
 
     @decorators.idempotent_id('b580fab9-7ae9-46e8-8138-417260cb6f9f')
     def test_create_ec2_credential(self):
diff --git a/tempest/api/identity/v2/test_tenants.py b/tempest/api/identity/v2/test_tenants.py
index 2689998..b2a6d13 100644
--- a/tempest/api/identity/v2/test_tenants.py
+++ b/tempest/api/identity/v2/test_tenants.py
@@ -24,7 +24,7 @@
 
     @decorators.idempotent_id('ecae2459-243d-4ba1-ad02-65f15dc82b78')
     def test_list_tenants_returns_only_authorized_tenants(self):
-        alt_tenant_name = self.alt_manager.credentials.tenant_name
+        alt_tenant_name = self.os_alt.credentials.tenant_name
         resp = self.non_admin_tenants_client.list_tenants()
 
         # check that user can see only that tenants that he presents in so user
@@ -32,18 +32,19 @@
         # from received tenants list
         for tenant in resp['tenants']:
             body = self.non_admin_token_client.auth(
-                self.os.credentials.username,
-                self.os.credentials.password,
+                self.os_primary.credentials.username,
+                self.os_primary.credentials.password,
                 tenant['name'])
             self.assertNotEmpty(body['token']['id'])
             self.assertEqual(body['token']['tenant']['id'], tenant['id'])
             self.assertEqual(body['token']['tenant']['name'], tenant['name'])
-            self.assertEqual(body['user']['id'], self.os.credentials.user_id)
+            self.assertEqual(
+                body['user']['id'], self.os_primary.credentials.user_id)
 
         # check that user cannot log in to alt user's tenant
         self.assertRaises(
             lib_exc.Unauthorized,
             self.non_admin_token_client.auth,
-            self.os.credentials.username,
-            self.os.credentials.password,
+            self.os_primary.credentials.username,
+            self.os_primary.credentials.password,
             alt_tenant_name)
diff --git a/tempest/api/identity/v2/test_tokens.py b/tempest/api/identity/v2/test_tokens.py
index 79a1765..64b81c2 100644
--- a/tempest/api/identity/v2/test_tokens.py
+++ b/tempest/api/identity/v2/test_tokens.py
@@ -27,7 +27,7 @@
         token_client = self.non_admin_token_client
 
         # get a token for the user
-        creds = self.os.credentials
+        creds = self.os_primary.credentials
         username = creds.username
         password = creds.password
         tenant_name = creds.tenant_name
diff --git a/tempest/api/identity/v2/test_users.py b/tempest/api/identity/v2/test_users.py
index 2b42981..9c77fff 100644
--- a/tempest/api/identity/v2/test_users.py
+++ b/tempest/api/identity/v2/test_users.py
@@ -30,7 +30,7 @@
     @classmethod
     def resource_setup(cls):
         super(IdentityUsersTest, cls).resource_setup()
-        cls.creds = cls.os.credentials
+        cls.creds = cls.os_primary.credentials
         cls.username = cls.creds.username
         cls.password = cls.creds.password
         cls.tenant_name = cls.creds.tenant_name
diff --git a/tempest/api/identity/v3/test_projects.py b/tempest/api/identity/v3/test_projects.py
index 570be99..0ae35ea 100644
--- a/tempest/api/identity/v3/test_projects.py
+++ b/tempest/api/identity/v3/test_projects.py
@@ -25,9 +25,9 @@
     @decorators.idempotent_id('86128d46-e170-4644-866a-cc487f699e1d')
     def test_list_projects_returns_only_authorized_projects(self):
         alt_project_name =\
-            self.alt_manager.credentials.project_name
+            self.os_alt.credentials.project_name
         resp = self.non_admin_users_client.list_user_projects(
-            self.os.credentials.user_id)
+            self.os_primary.credentials.user_id)
 
         # check that user can see only that projects that he presents in so
         # user can successfully authenticate using his credentials and
@@ -36,23 +36,24 @@
             # 'user_domain_id' needs to be specified otherwise tempest.lib
             # assumes it to be 'default'
             token_id, body = self.non_admin_token.get_token(
-                username=self.os.credentials.username,
-                user_domain_id=self.os.credentials.user_domain_id,
-                password=self.os.credentials.password,
+                username=self.os_primary.credentials.username,
+                user_domain_id=self.os_primary.credentials.user_domain_id,
+                password=self.os_primary.credentials.password,
                 project_name=project['name'],
                 project_domain_id=project['domain_id'],
                 auth_data=True)
             self.assertNotEmpty(token_id)
             self.assertEqual(body['project']['id'], project['id'])
             self.assertEqual(body['project']['name'], project['name'])
-            self.assertEqual(body['user']['id'], self.os.credentials.user_id)
+            self.assertEqual(
+                body['user']['id'], self.os_primary.credentials.user_id)
 
         # check that user cannot log in to alt user's project
         self.assertRaises(
             lib_exc.Unauthorized,
             self.non_admin_token.get_token,
-            username=self.os.credentials.username,
-            user_domain_id=self.os.credentials.user_domain_id,
-            password=self.os.credentials.password,
+            username=self.os_primary.credentials.username,
+            user_domain_id=self.os_primary.credentials.user_domain_id,
+            password=self.os_primary.credentials.password,
             project_name=alt_project_name,
             project_domain_id=project['domain_id'])
diff --git a/tempest/api/identity/v3/test_tokens.py b/tempest/api/identity/v3/test_tokens.py
index 1dc1df6..c9d7a4d 100644
--- a/tempest/api/identity/v3/test_tokens.py
+++ b/tempest/api/identity/v3/test_tokens.py
@@ -24,7 +24,7 @@
     @decorators.idempotent_id('6f8e4436-fc96-4282-8122-e41df57197a9')
     def test_create_token(self):
 
-        creds = self.os.credentials
+        creds = self.os_primary.credentials
         user_id = creds.user_id
         username = creds.username
         password = creds.password
diff --git a/tempest/api/identity/v3/test_users.py b/tempest/api/identity/v3/test_users.py
index e7998ee..1f099df 100644
--- a/tempest/api/identity/v3/test_users.py
+++ b/tempest/api/identity/v3/test_users.py
@@ -32,7 +32,7 @@
     @classmethod
     def resource_setup(cls):
         super(IdentityV3UsersTest, cls).resource_setup()
-        cls.creds = cls.os.credentials
+        cls.creds = cls.os_primary.credentials
         cls.user_id = cls.creds.user_id
 
     def _update_password(self, original_password, password):
diff --git a/tempest/api/image/base.py b/tempest/api/image/base.py
index c586960..70ba2fe 100644
--- a/tempest/api/image/base.py
+++ b/tempest/api/image/base.py
@@ -94,7 +94,7 @@
     @classmethod
     def setup_clients(cls):
         super(BaseV1ImageTest, cls).setup_clients()
-        cls.client = cls.os.image_client
+        cls.client = cls.os_primary.image_client
 
     @classmethod
     def _get_create_params(cls, **kwargs):
@@ -108,7 +108,7 @@
     @classmethod
     def setup_clients(cls):
         super(BaseV1ImageMembersTest, cls).setup_clients()
-        cls.image_member_client = cls.os.image_member_client
+        cls.image_member_client = cls.os_primary.image_member_client
         cls.alt_image_member_client = cls.os_alt.image_member_client
         cls.alt_img_cli = cls.os_alt.image_client
 
@@ -138,14 +138,15 @@
     @classmethod
     def setup_clients(cls):
         super(BaseV2ImageTest, cls).setup_clients()
-        cls.client = cls.os.image_client_v2
-        cls.namespaces_client = cls.os.namespaces_client
-        cls.resource_types_client = cls.os.resource_types_client
-        cls.namespace_properties_client = cls.os.namespace_properties_client
-        cls.namespace_objects_client = cls.os.namespace_objects_client
-        cls.namespace_tags_client = cls.os.namespace_tags_client
-        cls.schemas_client = cls.os.schemas_client
-        cls.versions_client = cls.os.image_versions_client
+        cls.client = cls.os_primary.image_client_v2
+        cls.namespaces_client = cls.os_primary.namespaces_client
+        cls.resource_types_client = cls.os_primary.resource_types_client
+        cls.namespace_properties_client =\
+            cls.os_primary.namespace_properties_client
+        cls.namespace_objects_client = cls.os_primary.namespace_objects_client
+        cls.namespace_tags_client = cls.os_primary.namespace_tags_client
+        cls.schemas_client = cls.os_primary.schemas_client
+        cls.versions_client = cls.os_primary.image_versions_client
 
     def create_namespace(cls, namespace_name=None, visibility='public',
                          description='Tempest', protected=False,
@@ -167,7 +168,7 @@
     @classmethod
     def setup_clients(cls):
         super(BaseV2MemberImageTest, cls).setup_clients()
-        cls.image_member_client = cls.os.image_member_client_v2
+        cls.image_member_client = cls.os_primary.image_member_client_v2
         cls.alt_image_member_client = cls.os_alt.image_member_client_v2
         cls.alt_img_client = cls.os_alt.image_client_v2
 
@@ -196,8 +197,8 @@
     @classmethod
     def setup_clients(cls):
         super(BaseV1ImageAdminTest, cls).setup_clients()
-        cls.client = cls.os.image_client
-        cls.admin_client = cls.os_adm.image_client
+        cls.client = cls.os_primary.image_client
+        cls.admin_client = cls.os_admin.image_client
 
 
 class BaseV2ImageAdminTest(BaseImageTest):
@@ -206,5 +207,5 @@
     @classmethod
     def setup_clients(cls):
         super(BaseV2ImageAdminTest, cls).setup_clients()
-        cls.client = cls.os.image_client_v2
-        cls.admin_client = cls.os_adm.image_client_v2
+        cls.client = cls.os_primary.image_client_v2
+        cls.admin_client = cls.os_admin.image_client_v2
diff --git a/tempest/api/image/v2/test_images.py b/tempest/api/image/v2/test_images.py
index a5d9773..2e68efd 100644
--- a/tempest/api/image/v2/test_images.py
+++ b/tempest/api/image/v2/test_images.py
@@ -364,7 +364,7 @@
     @classmethod
     def setup_clients(cls):
         super(ListSharedImagesTest, cls).setup_clients()
-        cls.image_member_client = cls.os.image_member_client_v2
+        cls.image_member_client = cls.os_primary.image_member_client_v2
         cls.alt_img_client = cls.os_alt.image_client_v2
 
     @decorators.idempotent_id('3fa50be4-8e38-4c02-a8db-7811bb780122')
diff --git a/tempest/api/network/admin/test_floating_ips_admin_actions.py b/tempest/api/network/admin/test_floating_ips_admin_actions.py
index 9a17817..11f520a 100644
--- a/tempest/api/network/admin/test_floating_ips_admin_actions.py
+++ b/tempest/api/network/admin/test_floating_ips_admin_actions.py
@@ -38,7 +38,7 @@
     @classmethod
     def setup_clients(cls):
         super(FloatingIPAdminTestJSON, cls).setup_clients()
-        cls.alt_floating_ips_client = cls.alt_manager.floating_ips_client
+        cls.alt_floating_ips_client = cls.os_alt.floating_ips_client
 
     @classmethod
     def resource_setup(cls):
diff --git a/tempest/api/network/base.py b/tempest/api/network/base.py
index 7ceeb50..359a444 100644
--- a/tempest/api/network/base.py
+++ b/tempest/api/network/base.py
@@ -68,20 +68,21 @@
     @classmethod
     def setup_clients(cls):
         super(BaseNetworkTest, cls).setup_clients()
-        cls.agents_client = cls.os.network_agents_client
-        cls.network_extensions_client = cls.os.network_extensions_client
-        cls.networks_client = cls.os.networks_client
-        cls.routers_client = cls.os.routers_client
-        cls.subnetpools_client = cls.os.subnetpools_client
-        cls.subnets_client = cls.os.subnets_client
-        cls.ports_client = cls.os.ports_client
-        cls.quotas_client = cls.os.network_quotas_client
-        cls.floating_ips_client = cls.os.floating_ips_client
-        cls.security_groups_client = cls.os.security_groups_client
+        cls.agents_client = cls.os_primary.network_agents_client
+        cls.network_extensions_client =\
+            cls.os_primary.network_extensions_client
+        cls.networks_client = cls.os_primary.networks_client
+        cls.routers_client = cls.os_primary.routers_client
+        cls.subnetpools_client = cls.os_primary.subnetpools_client
+        cls.subnets_client = cls.os_primary.subnets_client
+        cls.ports_client = cls.os_primary.ports_client
+        cls.quotas_client = cls.os_primary.network_quotas_client
+        cls.floating_ips_client = cls.os_primary.floating_ips_client
+        cls.security_groups_client = cls.os_primary.security_groups_client
         cls.security_group_rules_client = (
-            cls.os.security_group_rules_client)
-        cls.network_versions_client = cls.os.network_versions_client
-        cls.service_providers_client = cls.os.service_providers_client
+            cls.os_primary.security_group_rules_client)
+        cls.network_versions_client = cls.os_primary.network_versions_client
+        cls.service_providers_client = cls.os_primary.service_providers_client
 
     @classmethod
     def resource_setup(cls):
@@ -258,16 +259,16 @@
     @classmethod
     def setup_clients(cls):
         super(BaseAdminNetworkTest, cls).setup_clients()
-        cls.admin_agents_client = cls.os_adm.network_agents_client
-        cls.admin_networks_client = cls.os_adm.networks_client
-        cls.admin_routers_client = cls.os_adm.routers_client
-        cls.admin_subnets_client = cls.os_adm.subnets_client
-        cls.admin_ports_client = cls.os_adm.ports_client
-        cls.admin_quotas_client = cls.os_adm.network_quotas_client
-        cls.admin_floating_ips_client = cls.os_adm.floating_ips_client
-        cls.admin_metering_labels_client = cls.os_adm.metering_labels_client
+        cls.admin_agents_client = cls.os_admin.network_agents_client
+        cls.admin_networks_client = cls.os_admin.networks_client
+        cls.admin_routers_client = cls.os_admin.routers_client
+        cls.admin_subnets_client = cls.os_admin.subnets_client
+        cls.admin_ports_client = cls.os_admin.ports_client
+        cls.admin_quotas_client = cls.os_admin.network_quotas_client
+        cls.admin_floating_ips_client = cls.os_admin.floating_ips_client
+        cls.admin_metering_labels_client = cls.os_admin.metering_labels_client
         cls.admin_metering_label_rules_client = (
-            cls.os_adm.metering_label_rules_client)
+            cls.os_admin.metering_label_rules_client)
 
     @classmethod
     def create_metering_label(cls, name, description):
diff --git a/tempest/api/object_storage/base.py b/tempest/api/object_storage/base.py
index c075b92..2bac8d3 100644
--- a/tempest/api/object_storage/base.py
+++ b/tempest/api/object_storage/base.py
@@ -79,11 +79,11 @@
     @classmethod
     def setup_clients(cls):
         super(BaseObjectTest, cls).setup_clients()
-        cls.object_client = cls.os.object_client
-        cls.bulk_client = cls.os.bulk_client
-        cls.container_client = cls.os.container_client
-        cls.account_client = cls.os.account_client
-        cls.capabilities_client = cls.os.capabilities_client
+        cls.object_client = cls.os_roles_operator.object_client
+        cls.bulk_client = cls.os_roles_operator.bulk_client
+        cls.container_client = cls.os_roles_operator.container_client
+        cls.account_client = cls.os_roles_operator.account_client
+        cls.capabilities_client = cls.os_roles_operator.capabilities_client
 
     @classmethod
     def resource_setup(cls):
diff --git a/tempest/api/object_storage/test_account_quotas.py b/tempest/api/object_storage/test_account_quotas.py
index 9077f88..092d369 100644
--- a/tempest/api/object_storage/test_account_quotas.py
+++ b/tempest/api/object_storage/test_account_quotas.py
@@ -54,8 +54,8 @@
         # Set a quota of 20 bytes on the user's account before each test
         headers = {"X-Account-Meta-Quota-Bytes": "20"}
 
-        self.os.account_client.request("POST", url="", headers=headers,
-                                       body="")
+        self.os_roles_operator.account_client.request(
+            "POST", url="", headers=headers, body="")
 
     def tearDown(self):
         # Set the reselleradmin auth in headers for next account_client
@@ -67,8 +67,8 @@
         # remove the quota from the container
         headers = {"X-Remove-Account-Meta-Quota-Bytes": "x"}
 
-        self.os.account_client.request("POST", url="", headers=headers,
-                                       body="")
+        self.os_roles_operator.account_client.request(
+            "POST", url="", headers=headers, body="")
         super(AccountQuotasTest, self).tearDown()
 
     @classmethod
@@ -108,9 +108,8 @@
             )
             headers = {"X-Account-Meta-Quota-Bytes": quota}
 
-            resp, _ = self.os.account_client.request("POST", url="",
-                                                     headers=headers,
-                                                     body="")
+            resp, _ = self.os_roles_operator.account_client.request(
+                "POST", url="", headers=headers, body="")
 
             self.assertEqual(resp["status"], "204")
             self.assertHeaders(resp, 'Account', 'POST')
diff --git a/tempest/api/object_storage/test_account_quotas_negative.py b/tempest/api/object_storage/test_account_quotas_negative.py
index f955d34..55a6c7a 100644
--- a/tempest/api/object_storage/test_account_quotas_negative.py
+++ b/tempest/api/object_storage/test_account_quotas_negative.py
@@ -53,8 +53,8 @@
         # Set a quota of 20 bytes on the user's account before each test
         headers = {"X-Account-Meta-Quota-Bytes": "20"}
 
-        self.os.account_client.request("POST", url="", headers=headers,
-                                       body="")
+        self.os_roles_operator.account_client.request(
+            "POST", url="", headers=headers, body="")
 
     def tearDown(self):
         # Set the reselleradmin auth in headers for next account_client
@@ -66,8 +66,8 @@
         # remove the quota from the container
         headers = {"X-Remove-Account-Meta-Quota-Bytes": "x"}
 
-        self.os.account_client.request("POST", url="", headers=headers,
-                                       body="")
+        self.os_roles_operator.account_client.request(
+            "POST", url="", headers=headers, body="")
         super(AccountQuotasNegativeTest, self).tearDown()
 
     @classmethod
diff --git a/tempest/api/orchestration/base.py b/tempest/api/orchestration/base.py
index 8d3d344..d9d8017 100644
--- a/tempest/api/orchestration/base.py
+++ b/tempest/api/orchestration/base.py
@@ -42,13 +42,13 @@
     @classmethod
     def setup_clients(cls):
         super(BaseOrchestrationTest, cls).setup_clients()
-        cls.orchestration_client = cls.os.orchestration_client
+        cls.orchestration_client = cls.os_primary.orchestration_client
         cls.client = cls.orchestration_client
-        cls.servers_client = cls.os.servers_client
-        cls.keypairs_client = cls.os.keypairs_client
-        cls.networks_client = cls.os.networks_client
-        cls.images_v2_client = cls.os.image_client_v2
-        cls.volumes_client = cls.os.volumes_v2_client
+        cls.servers_client = cls.os_primary.servers_client
+        cls.keypairs_client = cls.os_primary.keypairs_client
+        cls.networks_client = cls.os_primary.networks_client
+        cls.images_v2_client = cls.os_primary.image_client_v2
+        cls.volumes_client = cls.os_primary.volumes_v2_client
 
     @classmethod
     def resource_setup(cls):
diff --git a/tempest/api/orchestration/stacks/test_neutron_resources.py b/tempest/api/orchestration/stacks/test_neutron_resources.py
index 6faca71..36881bf 100644
--- a/tempest/api/orchestration/stacks/test_neutron_resources.py
+++ b/tempest/api/orchestration/stacks/test_neutron_resources.py
@@ -41,9 +41,9 @@
     @classmethod
     def setup_clients(cls):
         super(NeutronResourcesTestJSON, cls).setup_clients()
-        cls.subnets_client = cls.os.subnets_client
-        cls.ports_client = cls.os.ports_client
-        cls.routers_client = cls.os.routers_client
+        cls.subnets_client = cls.os_primary.subnets_client
+        cls.ports_client = cls.os_primary.ports_client
+        cls.routers_client = cls.os_primary.routers_client
 
     @classmethod
     def resource_setup(cls):
diff --git a/tempest/api/orchestration/stacks/test_swift_resources.py b/tempest/api/orchestration/stacks/test_swift_resources.py
index 97fdac4..d63cde8 100644
--- a/tempest/api/orchestration/stacks/test_swift_resources.py
+++ b/tempest/api/orchestration/stacks/test_swift_resources.py
@@ -40,8 +40,8 @@
     @classmethod
     def setup_clients(cls):
         super(SwiftResourcesTestJSON, cls).setup_clients()
-        cls.account_client = cls.os.account_client
-        cls.container_client = cls.os.container_client
+        cls.account_client = cls.os_primary.account_client
+        cls.container_client = cls.os_primary.container_client
 
     @classmethod
     def resource_setup(cls):
diff --git a/tempest/api/volume/admin/test_volume_quotas.py b/tempest/api/volume/admin/test_volume_quotas.py
index 48941c6..ae4b579 100644
--- a/tempest/api/volume/admin/test_volume_quotas.py
+++ b/tempest/api/volume/admin/test_volume_quotas.py
@@ -35,13 +35,13 @@
     @classmethod
     def setup_credentials(cls):
         super(BaseVolumeQuotasAdminTestJSON, cls).setup_credentials()
-        cls.demo_tenant_id = cls.os.credentials.tenant_id
+        cls.demo_tenant_id = cls.os_primary.credentials.tenant_id
         cls.alt_client = cls.os_alt.volumes_client
 
     @classmethod
     def setup_clients(cls):
         super(BaseVolumeQuotasAdminTestJSON, cls).setup_clients()
-        cls.transfer_client = cls.os.volume_transfers_v2_client
+        cls.transfer_client = cls.os_primary.volume_transfers_v2_client
         cls.alt_transfer_client = cls.os_alt.volume_transfers_v2_client
 
     @decorators.idempotent_id('59eada70-403c-4cef-a2a3-a8ce2f1b07a0')
@@ -86,7 +86,7 @@
     @decorators.idempotent_id('18c51ae9-cb03-48fc-b234-14a19374dbed')
     def test_show_quota_usage(self):
         quota_usage = self.admin_quotas_client.show_quota_set(
-            self.os_adm.credentials.tenant_id,
+            self.os_admin.credentials.tenant_id,
             params={'usage': True})['quota_set']
         for key in QUOTA_KEYS:
             self.assertIn(key, quota_usage)
diff --git a/tempest/api/volume/admin/test_volume_quotas_negative.py b/tempest/api/volume/admin/test_volume_quotas_negative.py
index 63f61e4..d127b5f 100644
--- a/tempest/api/volume/admin/test_volume_quotas_negative.py
+++ b/tempest/api/volume/admin/test_volume_quotas_negative.py
@@ -27,7 +27,7 @@
     @classmethod
     def setup_credentials(cls):
         super(BaseVolumeQuotasNegativeTestJSON, cls).setup_credentials()
-        cls.demo_tenant_id = cls.os.credentials.tenant_id
+        cls.demo_tenant_id = cls.os_primary.credentials.tenant_id
 
     @classmethod
     def resource_setup(cls):
diff --git a/tempest/api/volume/admin/test_volume_snapshot_quotas_negative.py b/tempest/api/volume/admin/test_volume_snapshot_quotas_negative.py
index fa8c7ab..0f4e90f 100644
--- a/tempest/api/volume/admin/test_volume_snapshot_quotas_negative.py
+++ b/tempest/api/volume/admin/test_volume_snapshot_quotas_negative.py
@@ -33,7 +33,7 @@
     @classmethod
     def setup_credentials(cls):
         super(VolumeSnapshotQuotasNegativeTestJSON, cls).setup_credentials()
-        cls.demo_tenant_id = cls.os.credentials.tenant_id
+        cls.demo_tenant_id = cls.os_primary.credentials.tenant_id
 
     @classmethod
     def resource_setup(cls):
diff --git a/tempest/api/volume/base.py b/tempest/api/volume/base.py
index ead9d4f..8feaca9 100644
--- a/tempest/api/volume/base.py
+++ b/tempest/api/volume/base.py
@@ -64,20 +64,21 @@
     @classmethod
     def setup_clients(cls):
         super(BaseVolumeTest, cls).setup_clients()
-        cls.servers_client = cls.os.servers_client
+        cls.servers_client = cls.os_primary.servers_client
 
         if CONF.service_available.glance:
-            cls.images_client = cls.os.image_client_v2
+            cls.images_client = cls.os_primary.image_client_v2
 
-        cls.snapshots_client = cls.os.snapshots_v2_client
-        cls.volumes_client = cls.os.volumes_v2_client
-        cls.backups_client = cls.os.backups_v2_client
-        cls.volumes_extension_client = cls.os.volumes_v2_extension_client
+        cls.snapshots_client = cls.os_primary.snapshots_v2_client
+        cls.volumes_client = cls.os_primary.volumes_v2_client
+        cls.backups_client = cls.os_primary.backups_v2_client
+        cls.volumes_extension_client =\
+            cls.os_primary.volumes_v2_extension_client
         cls.availability_zone_client = (
-            cls.os.volume_v2_availability_zone_client)
-        cls.volume_limits_client = cls.os.volume_v2_limits_client
-        cls.messages_client = cls.os.volume_v3_messages_client
-        cls.versions_client = cls.os.volume_v3_versions_client
+            cls.os_primary.volume_v2_availability_zone_client)
+        cls.volume_limits_client = cls.os_primary.volume_v2_limits_client
+        cls.messages_client = cls.os_primary.volume_v3_messages_client
+        cls.versions_client = cls.os_primary.volume_v3_versions_client
 
     def setUp(self):
         super(BaseVolumeTest, self).setUp()
@@ -246,29 +247,29 @@
     def setup_clients(cls):
         super(BaseVolumeAdminTest, cls).setup_clients()
 
-        cls.admin_volume_qos_client = cls.os_adm.volume_qos_v2_client
+        cls.admin_volume_qos_client = cls.os_admin.volume_qos_v2_client
         cls.admin_volume_services_client = \
-            cls.os_adm.volume_services_v2_client
-        cls.admin_volume_types_client = cls.os_adm.volume_types_v2_client
-        cls.admin_volume_manage_client = cls.os_adm.volume_manage_v2_client
-        cls.admin_volume_client = cls.os_adm.volumes_v2_client
-        cls.admin_hosts_client = cls.os_adm.volume_hosts_v2_client
+            cls.os_admin.volume_services_v2_client
+        cls.admin_volume_types_client = cls.os_admin.volume_types_v2_client
+        cls.admin_volume_manage_client = cls.os_admin.volume_manage_v2_client
+        cls.admin_volume_client = cls.os_admin.volumes_v2_client
+        cls.admin_hosts_client = cls.os_admin.volume_hosts_v2_client
         cls.admin_snapshot_manage_client = \
-            cls.os_adm.snapshot_manage_v2_client
-        cls.admin_snapshots_client = cls.os_adm.snapshots_v2_client
-        cls.admin_backups_client = cls.os_adm.backups_v2_client
+            cls.os_admin.snapshot_manage_v2_client
+        cls.admin_snapshots_client = cls.os_admin.snapshots_v2_client
+        cls.admin_backups_client = cls.os_admin.backups_v2_client
         cls.admin_encryption_types_client = \
-            cls.os_adm.encryption_types_v2_client
+            cls.os_admin.encryption_types_v2_client
         cls.admin_quota_classes_client = \
-            cls.os_adm.volume_quota_classes_v2_client
-        cls.admin_quotas_client = cls.os_adm.volume_quotas_v2_client
-        cls.admin_volume_limits_client = cls.os_adm.volume_v2_limits_client
+            cls.os_admin.volume_quota_classes_v2_client
+        cls.admin_quotas_client = cls.os_admin.volume_quotas_v2_client
+        cls.admin_volume_limits_client = cls.os_admin.volume_v2_limits_client
         cls.admin_capabilities_client = \
-            cls.os_adm.volume_capabilities_v2_client
+            cls.os_admin.volume_capabilities_v2_client
         cls.admin_scheduler_stats_client = \
-            cls.os_adm.volume_scheduler_stats_v2_client
-        cls.admin_messages_client = cls.os_adm.volume_v3_messages_client
-        cls.admin_volume_types_client = cls.os_adm.volume_types_v2_client
+            cls.os_admin.volume_scheduler_stats_v2_client
+        cls.admin_messages_client = cls.os_admin.volume_v3_messages_client
+        cls.admin_volume_types_client = cls.os_admin.volume_types_v2_client
 
     @classmethod
     def resource_setup(cls):
diff --git a/tempest/api/volume/test_volume_transfers.py b/tempest/api/volume/test_volume_transfers.py
index 75f2a73..5fd1904 100644
--- a/tempest/api/volume/test_volume_transfers.py
+++ b/tempest/api/volume/test_volume_transfers.py
@@ -28,10 +28,10 @@
     def setup_clients(cls):
         super(VolumesTransfersTest, cls).setup_clients()
 
-        cls.client = cls.os.volume_transfers_v2_client
+        cls.client = cls.os_primary.volume_transfers_v2_client
         cls.alt_client = cls.os_alt.volume_transfers_v2_client
         cls.alt_volumes_client = cls.os_alt.volumes_v2_client
-        cls.adm_volumes_client = cls.os_adm.volumes_v2_client
+        cls.adm_volumes_client = cls.os_admin.volumes_v2_client
 
     @decorators.idempotent_id('4d75b645-a478-48b1-97c8-503f64242f1a')
     def test_create_get_list_accept_volume_transfer(self):
diff --git a/tempest/scenario/manager.py b/tempest/scenario/manager.py
index 3418a2f..ef4506c 100644
--- a/tempest/scenario/manager.py
+++ b/tempest/scenario/manager.py
@@ -1242,9 +1242,9 @@
     @classmethod
     def setup_clients(cls):
         super(EncryptionScenarioTest, cls).setup_clients()
-        cls.admin_volume_types_client = cls.os_adm.volume_types_v2_client
+        cls.admin_volume_types_client = cls.os_admin.volume_types_v2_client
         cls.admin_encryption_types_client =\
-            cls.os_adm.encryption_types_v2_client
+            cls.os_admin.encryption_types_v2_client
 
     def create_encryption_type(self, client=None, type_id=None, provider=None,
                                key_size=None, cipher=None,
diff --git a/tempest/scenario/test_network_advanced_server_ops.py b/tempest/scenario/test_network_advanced_server_ops.py
index bde577f..c2fc1a7 100644
--- a/tempest/scenario/test_network_advanced_server_ops.py
+++ b/tempest/scenario/test_network_advanced_server_ops.py
@@ -38,7 +38,7 @@
     @classmethod
     def setup_clients(cls):
         super(TestNetworkAdvancedServerOps, cls).setup_clients()
-        cls.admin_servers_client = cls.os_adm.servers_client
+        cls.admin_servers_client = cls.os_admin.servers_client
 
     @classmethod
     def skip_checks(cls):
diff --git a/tempest/scenario/test_server_multinode.py b/tempest/scenario/test_server_multinode.py
index bf2858b..d9bff09 100644
--- a/tempest/scenario/test_server_multinode.py
+++ b/tempest/scenario/test_server_multinode.py
@@ -49,7 +49,7 @@
     @test.services('compute', 'network')
     def test_schedule_to_all_nodes(self):
         available_zone = \
-            self.os_adm.availability_zone_client.list_availability_zones(
+            self.os_admin.availability_zone_client.list_availability_zones(
                 detail=True)['availabilityZoneInfo']
         hosts = []
         for zone in available_zone:
diff --git a/tempest/scenario/test_volume_migrate_attached.py b/tempest/scenario/test_volume_migrate_attached.py
index a3cb3eb..63dc23d 100644
--- a/tempest/scenario/test_volume_migrate_attached.py
+++ b/tempest/scenario/test_volume_migrate_attached.py
@@ -40,7 +40,7 @@
     @classmethod
     def setup_clients(cls):
         super(TestVolumeMigrateRetypeAttached, cls).setup_clients()
-        cls.admin_volume_types_client = cls.os_adm.volume_types_v2_client
+        cls.admin_volume_types_client = cls.os_admin.volume_types_v2_client
 
     @classmethod
     def skip_checks(cls):
diff --git a/tempest/test.py b/tempest/test.py
index e63e08f..f6b17ad 100644
--- a/tempest/test.py
+++ b/tempest/test.py
@@ -331,16 +331,32 @@
                 manager = cls.get_client_manager(
                     credential_type=credentials_type)
                 setattr(cls, 'os_%s' % credentials_type, manager)
+                # NOTE(jordanP): Tempest should use os_primary, os_admin
+                # and os_alt throughout its code base but we keep the aliases
+                # around for a while for Tempest plugins. Aliases should be
+                # removed eventually.
                 # Setup some common aliases
-                # TODO(andreaf) The aliases below are a temporary hack
-                # to avoid changing too much code in one patch. They should
-                # be removed eventually
                 if credentials_type == 'primary':
-                    cls.os = cls.manager = cls.os_primary
+                    cls.os = debtcollector.moves.moved_read_only_property(
+                        'os', 'os_primary', version='Pike',
+                        removal_version='Ocata')
+                    cls.manager =\
+                        debtcollector.moves.moved_read_only_property(
+                            'manager', 'os_primary', version='Pike',
+                            removal_version='Ocata')
                 if credentials_type == 'admin':
-                    cls.os_adm = cls.admin_manager = cls.os_admin
+                    cls.os_adm = debtcollector.moves.moved_read_only_property(
+                        'os_adm', 'os_admin', version='Pike',
+                        removal_version='Ocata')
+                    cls.admin_manager =\
+                        debtcollector.moves.moved_read_only_property(
+                            'admin_manager', 'os_admin', version='Pike',
+                            removal_version='Ocata')
                 if credentials_type == 'alt':
-                    cls.alt_manager = cls.os_alt
+                    cls.alt_manager =\
+                        debtcollector.moves.moved_read_only_property(
+                            'alt_manager', 'os_alt', version='Pike',
+                            removal_version='Ocata')
             elif isinstance(credentials_type, list):
                 manager = cls.get_client_manager(roles=credentials_type[1:],
                                                  force_new=True)