diff --git a/releasenotes/notes/deprecate-allow_port_security_disabled-option-2d3d87f6bd11d03a.yaml b/releasenotes/notes/deprecate-allow_port_security_disabled-option-2d3d87f6bd11d03a.yaml
new file mode 100644
index 0000000..4acdc6d
--- /dev/null
+++ b/releasenotes/notes/deprecate-allow_port_security_disabled-option-2d3d87f6bd11d03a.yaml
@@ -0,0 +1,8 @@
+---
+upgrade:
+  - The default value for the ``allow_port_security_disabled`` option in the
+    ``compute-feature-enabled`` section has been changed from ``False``
+    to ``True``.
+deprecations:
+  - The ``allow_port_security_disabled`` option in the
+   ``compute-feature-enabled`` section is now deprecated.
diff --git a/tempest/api/compute/images/test_images_negative.py b/tempest/api/compute/images/test_images_negative.py
index 3923068..6c97072 100644
--- a/tempest/api/compute/images/test_images_negative.py
+++ b/tempest/api/compute/images/test_images_negative.py
@@ -62,7 +62,7 @@
         # Create a new image with invalid server id
         meta = {'image_type': 'test'}
         self.assertRaises(lib_exc.NotFound, self.create_image_from_server,
-                          '!@$^&*()', meta=meta)
+                          data_utils.rand_name('invalid'), meta=meta)
 
     @test.attr(type=['negative'])
     @test.idempotent_id('ec176029-73dc-4037-8d72-2e4ff60cf538')
@@ -87,7 +87,7 @@
     def test_delete_image_with_invalid_image_id(self):
         # An image should not be deleted with invalid image id
         self.assertRaises(lib_exc.NotFound, self.client.delete_image,
-                          '!@$^&*()')
+                          data_utils.rand_name('invalid'))
 
     @test.attr(type=['negative'])
     @test.idempotent_id('137aef61-39f7-44a1-8ddf-0adf82511701')
diff --git a/tempest/api/compute/volumes/test_attach_volume.py b/tempest/api/compute/volumes/test_attach_volume.py
index 30549ec..fa465af 100644
--- a/tempest/api/compute/volumes/test_attach_volume.py
+++ b/tempest/api/compute/volumes/test_attach_volume.py
@@ -13,7 +13,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import logging
+from oslo_log import log as logging
 import testtools
 
 from tempest.api.compute import base
diff --git a/tempest/api/compute/volumes/test_volumes_negative.py b/tempest/api/compute/volumes/test_volumes_negative.py
index c4041cb..0e1fef2 100644
--- a/tempest/api/compute/volumes/test_volumes_negative.py
+++ b/tempest/api/compute/volumes/test_volumes_negative.py
@@ -95,7 +95,8 @@
         # Negative: Should not be able to delete volume when invalid ID is
         # passed
         self.assertRaises(lib_exc.NotFound,
-                          self.client.delete_volume, '!@#$%^&*()')
+                          self.client.delete_volume,
+                          data_utils.rand_name('invalid'))
 
     @test.attr(type=['negative'])
     @test.idempotent_id('0d1417c5-4ae8-4c2c-adc5-5f0b864253e5')
diff --git a/tempest/api/identity/base.py b/tempest/api/identity/base.py
index 14bf4f8..9515788 100644
--- a/tempest/api/identity/base.py
+++ b/tempest/api/identity/base.py
@@ -105,6 +105,15 @@
 
     credentials = ['primary', 'admin']
 
+    # NOTE(andreaf) Identity tests work with credentials, so it is safer
+    # for them to always use disposable credentials. Forcing dynamic creds
+    # on regular identity tests would be however to restrictive, since it
+    # would prevent any identity test from being executed against clouds where
+    # admin credentials are not available.
+    # Since All admin tests require admin credentials to be
+    # executed, so this will not impact the ability to execute tests.
+    force_tenant_isolation = True
+
     @classmethod
     def setup_clients(cls):
         super(BaseIdentityV2AdminTest, cls).setup_clients()
@@ -165,6 +174,15 @@
 
     credentials = ['primary', 'admin']
 
+    # NOTE(andreaf) Identity tests work with credentials, so it is safer
+    # for them to always use disposable credentials. Forcing dynamic creds
+    # on regular identity tests would be however to restrictive, since it
+    # would prevent any identity test from being executed against clouds where
+    # admin credentials are not available.
+    # Since All admin tests require admin credentials to be
+    # executed, so this will not impact the ability to execute tests.
+    force_tenant_isolation = True
+
     @classmethod
     def setup_clients(cls):
         super(BaseIdentityV3AdminTest, cls).setup_clients()
diff --git a/tempest/api/volume/test_volumes_negative.py b/tempest/api/volume/test_volumes_negative.py
index c45ace6..bcdbd22 100644
--- a/tempest/api/volume/test_volumes_negative.py
+++ b/tempest/api/volume/test_volumes_negative.py
@@ -133,7 +133,8 @@
         v_name = data_utils.rand_name(self.__class__.__name__ + '-Volume')
         metadata = {'Type': 'work'}
         self.assertRaises(lib_exc.NotFound, self.volumes_client.update_volume,
-                          volume_id='#$%%&^&^', display_name=v_name,
+                          volume_id=data_utils.rand_name('invalid'),
+                          display_name=v_name,
                           metadata=metadata)
 
     @test.attr(type=['negative'])
@@ -150,7 +151,7 @@
     def test_get_invalid_volume_id(self):
         # Should not be able to get volume with invalid id
         self.assertRaises(lib_exc.NotFound, self.volumes_client.show_volume,
-                          '#$%%&^&^')
+                          data_utils.rand_name('invalid'))
 
     @test.attr(type=['negative'])
     @test.idempotent_id('c6c3db06-29ad-4e91-beb0-2ab195fe49e3')
@@ -164,7 +165,7 @@
     def test_delete_invalid_volume_id(self):
         # Should not be able to delete volume when invalid ID is passed
         self.assertRaises(lib_exc.NotFound, self.volumes_client.delete_volume,
-                          '!@#$%^&*()')
+                          data_utils.rand_name('invalid'))
 
     @test.attr(type=['negative'])
     @test.idempotent_id('441a1550-5d44-4b30-af0f-a6d402f52026')
diff --git a/tempest/clients.py b/tempest/clients.py
index 8093a72..8d30aaa 100644
--- a/tempest/clients.py
+++ b/tempest/clients.py
@@ -19,7 +19,6 @@
 from tempest.lib import auth
 from tempest.lib import exceptions as lib_exc
 from tempest.lib.services import clients
-from tempest.lib.services import identity
 from tempest.services import object_storage
 from tempest.services import orchestration
 
@@ -237,15 +236,15 @@
         # API version is marked as enabled
         if CONF.identity_feature_enabled.api_v2:
             if CONF.identity.uri:
-                self.token_client = identity.v2.TokenClient(
-                    CONF.identity.uri, **self.default_params)
+                self.token_client = self.identity_v2.TokenClient(
+                    auth_url=CONF.identity.uri)
             else:
                 msg = 'Identity v2 API enabled, but no identity.uri set'
                 raise lib_exc.InvalidConfiguration(msg)
         if CONF.identity_feature_enabled.api_v3:
             if CONF.identity.uri_v3:
-                self.token_v3_client = identity.v3.V3TokenClient(
-                    CONF.identity.uri_v3, **self.default_params)
+                self.token_v3_client = self.identity_v3.V3TokenClient(
+                    auth_url=CONF.identity.uri_v3)
             else:
                 msg = 'Identity v3 API enabled, but no identity.uri_v3 set'
                 raise lib_exc.InvalidConfiguration(msg)
diff --git a/tempest/config.py b/tempest/config.py
index 4162718..fe8c175 100644
--- a/tempest/config.py
+++ b/tempest/config.py
@@ -16,7 +16,6 @@
 from __future__ import print_function
 
 import functools
-import logging as std_logging
 import os
 import tempfile
 
@@ -332,9 +331,12 @@
     # NOTE(mriedem): This is a feature toggle for bug 1175464 which is fixed in
     # mitaka and newton. This option can be removed after liberty-eol.
     cfg.BoolOpt('allow_port_security_disabled',
-                default=False,
+                default=True,
                 help='Does the test environment support creating ports in a '
-                     'network where port security is disabled?'),
+                     'network where port security is disabled?',
+                deprecated_for_removal=True,
+                deprecated_reason='This config switch was added for Liberty '
+                                  'which is not supported anymore.'),
     cfg.BoolOpt('disk_config',
                 default=True,
                 help="If false, skip disk config tests"),
@@ -1196,7 +1198,7 @@
         register_opts()
         self._set_attrs()
         if parse_conf:
-            _CONF.log_opt_values(LOG, std_logging.DEBUG)
+            _CONF.log_opt_values(LOG, logging.DEBUG)
 
 
 class TempestConfigProxy(object):
@@ -1204,14 +1206,14 @@
     _path = None
 
     _extra_log_defaults = [
-        ('paramiko.transport', std_logging.INFO),
-        ('requests.packages.urllib3.connectionpool', std_logging.WARN),
+        ('paramiko.transport', logging.INFO),
+        ('requests.packages.urllib3.connectionpool', logging.WARN),
     ]
 
     def _fix_log_levels(self):
         """Tweak the oslo log defaults."""
         for name, level in self._extra_log_defaults:
-            std_logging.getLogger(name).setLevel(level)
+            logging.getLogger(name).logger.setLevel(level)
 
     def __getattr__(self, attr):
         if not self._config:
diff --git a/tempest/lib/cli/base.py b/tempest/lib/cli/base.py
index 5d7fbe3..5468a7b 100644
--- a/tempest/lib/cli/base.py
+++ b/tempest/lib/cli/base.py
@@ -13,11 +13,11 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import logging
 import os
 import shlex
 import subprocess
 
+from oslo_log import log as logging
 import six
 
 from tempest.lib import base
diff --git a/tempest/lib/cli/output_parser.py b/tempest/lib/cli/output_parser.py
index c71c7a7..716f374 100644
--- a/tempest/lib/cli/output_parser.py
+++ b/tempest/lib/cli/output_parser.py
@@ -15,9 +15,10 @@
 
 """Collection of utilities for parsing CLI clients output."""
 
-import logging
 import re
 
+from oslo_log import log as logging
+
 from tempest.lib import exceptions
 
 
diff --git a/tempest/lib/common/rest_client.py b/tempest/lib/common/rest_client.py
index 31d2ba5..b49f331 100644
--- a/tempest/lib/common/rest_client.py
+++ b/tempest/lib/common/rest_client.py
@@ -16,7 +16,6 @@
 
 import collections
 import email.utils
-import logging as real_logging
 import re
 import time
 
@@ -455,7 +454,7 @@
 
         # Also look everything at DEBUG if you want to filter this
         # out, don't run at debug.
-        if self.LOG.isEnabledFor(real_logging.DEBUG):
+        if self.LOG.isEnabledFor(logging.DEBUG):
             self._log_request_full(resp, req_headers, req_body,
                                    resp_body, extra)
 
diff --git a/tempest/lib/services/clients.py b/tempest/lib/services/clients.py
index 262a894..445e8bd 100644
--- a/tempest/lib/services/clients.py
+++ b/tempest/lib/services/clients.py
@@ -17,7 +17,8 @@
 import copy
 import importlib
 import inspect
-import logging
+
+from oslo_log import log as logging
 
 from tempest.lib import auth
 from tempest.lib.common.utils import misc
@@ -279,7 +280,7 @@
         a dictionary ready to be injected in kwargs.
 
         Exceptions are:
-        - Token clients for 'identity' have a very different interface
+        - Token clients for 'identity' must be given an 'auth_url' parameter
         - Volume client for 'volume' accepts 'default_volume_size'
         - Servers client from 'compute' accepts 'enable_instance_password'
 
diff --git a/tempest/lib/services/identity/v2/token_client.py b/tempest/lib/services/identity/v2/token_client.py
index c4fd483..458c862 100644
--- a/tempest/lib/services/identity/v2/token_client.py
+++ b/tempest/lib/services/identity/v2/token_client.py
@@ -23,7 +23,22 @@
 
     def __init__(self, auth_url, disable_ssl_certificate_validation=None,
                  ca_certs=None, trace_requests=None, **kwargs):
+        """Initialises the Token client
+
+        :param auth_url: URL to which the token request is sent
+        :param disable_ssl_certificate_validation: pass-through to rest client
+        :param ca_certs: pass-through to rest client
+        :param trace_requests: pass-through to rest client
+        :param kwargs: any extra parameter to pass through the rest client.
+               region, service and auth_provider will be ignored, if passed,
+               as they are not meaningful for token client
+        """
         dscv = disable_ssl_certificate_validation
+        # NOTE(andreaf) region, service and auth_provider are passed
+        # positionally with None. Having them in kwargs would raise a
+        # "multiple values for keyword arguments" error
+        for unwanted_kwargs in ['region', 'service', 'auth_provider']:
+            kwargs.pop(unwanted_kwargs, None)
         super(TokenClient, self).__init__(
             None, None, None, disable_ssl_certificate_validation=dscv,
             ca_certs=ca_certs, trace_requests=trace_requests, **kwargs)
diff --git a/tempest/lib/services/identity/v3/token_client.py b/tempest/lib/services/identity/v3/token_client.py
index 06927f4..33f6f16 100644
--- a/tempest/lib/services/identity/v3/token_client.py
+++ b/tempest/lib/services/identity/v3/token_client.py
@@ -23,7 +23,19 @@
 
     def __init__(self, auth_url, disable_ssl_certificate_validation=None,
                  ca_certs=None, trace_requests=None, **kwargs):
+        """Initialises the Token client
+
+        :param auth_url: URL to which the token request is sent
+        :param disable_ssl_certificate_validation: pass-through to rest client
+        :param ca_certs: pass-through to rest client
+        :param trace_requests: pass-through to rest client
+        :param kwargs: any extra parameter to pass through the rest client.
+               Three kwargs are forbidden: region, service and auth_provider
+               as they are not meaningful for token client
+        """
         dscv = disable_ssl_certificate_validation
+        for unwanted_kwargs in ['region', 'service', 'auth_provider']:
+            kwargs.pop(unwanted_kwargs, None)
         super(V3TokenClient, self).__init__(
             None, None, None, disable_ssl_certificate_validation=dscv,
             ca_certs=ca_certs, trace_requests=trace_requests, **kwargs)
diff --git a/tempest/scenario/manager.py b/tempest/scenario/manager.py
index 2da2f92..a3a0100 100644
--- a/tempest/scenario/manager.py
+++ b/tempest/scenario/manager.py
@@ -529,14 +529,14 @@
 
         caller = test_utils.find_test_caller()
         LOG.debug('%(caller)s begins to ping %(ip)s in %(timeout)s sec and the'
-                  ' expected result is %(should_succeed)s', **{
+                  ' expected result is %(should_succeed)s', {
                       'caller': caller, 'ip': ip_address, 'timeout': timeout,
                       'should_succeed':
                       'reachable' if should_succeed else 'unreachable'
                   })
         result = test_utils.call_until_true(ping, timeout, 1)
         LOG.debug('%(caller)s finishes ping %(ip)s in %(timeout)s sec and the '
-                  'ping result is %(result)s', **{
+                  'ping result is %(result)s', {
                       'caller': caller, 'ip': ip_address, 'timeout': timeout,
                       'result': 'expected' if result else 'unexpected'
                   })
diff --git a/tempest/test_discover/plugins.py b/tempest/test_discover/plugins.py
index e9f59af..abe2b73 100644
--- a/tempest/test_discover/plugins.py
+++ b/tempest/test_discover/plugins.py
@@ -13,8 +13,8 @@
 # under the License.
 
 import abc
-import logging
 
+from oslo_log import log as logging
 import six
 import stevedore