diff --git a/etc/tempest.conf.sample b/etc/tempest.conf.sample
index 3c6eb44..86dda80 100644
--- a/etc/tempest.conf.sample
+++ b/etc/tempest.conf.sample
@@ -517,9 +517,6 @@
 # From tempest.config
 #
 
-# Enable diagnostic commands (boolean value)
-#enable = true
-
 # A regex to determine which requests should be traced.  This is a
 # regex to match the caller for rest client requests to be able to
 # selectively trace calls out of specific classes and methods. It
diff --git a/tempest/common/commands.py b/tempest/common/commands.py
index 6583475..e68c20e 100644
--- a/tempest/common/commands.py
+++ b/tempest/common/commands.py
@@ -19,63 +19,6 @@
 
 LOG = logging.getLogger(__name__)
 
-# NOTE(afazekas):
-# These commands assumes the tempest node is the same as
-# the only one service node. all-in-one installation.
-
-
-def sudo_cmd_call(cmd):
-    args = shlex.split(cmd.encode('utf-8'))
-    subprocess_args = {'stdout': subprocess.PIPE,
-                       'stderr': subprocess.STDOUT}
-    proc = subprocess.Popen(['/usr/bin/sudo', '-n'] + args,
-                            **subprocess_args)
-    stdout = proc.communicate()[0]
-    if proc.returncode != 0:
-        LOG.error(("Command {0} returned with exit status {1},"
-                   "output {2}").format(cmd, proc.returncode, stdout))
-    return stdout
-
-
-def ip_addr_raw():
-    return sudo_cmd_call("ip a")
-
-
-def ip_route_raw():
-    return sudo_cmd_call("ip r")
-
-
-def ip_ns_raw():
-    return sudo_cmd_call("ip netns list")
-
-
-def iptables_raw(table):
-    return sudo_cmd_call("iptables --line-numbers -L -nv -t " + table)
-
-
-def ip_ns_list():
-    return ip_ns_raw().split()
-
-
-def ip_ns_exec(ns, cmd):
-    return sudo_cmd_call(" ".join(("ip netns exec", ns, cmd)))
-
-
-def ip_ns_addr(ns):
-    return ip_ns_exec(ns, "ip a")
-
-
-def ip_ns_route(ns):
-    return ip_ns_exec(ns, "ip r")
-
-
-def iptables_ns(ns, table):
-    return ip_ns_exec(ns, "iptables -v -S -t " + table)
-
-
-def ovs_db_dump():
-    return sudo_cmd_call("ovsdb-client dump")
-
 
 def copy_file_to_host(file_from, dest, host, username, pkey):
     dest = "%s@%s:%s" % (username, host, dest)
diff --git a/tempest/common/debug.py b/tempest/common/debug.py
deleted file mode 100644
index 16e5ffe..0000000
--- a/tempest/common/debug.py
+++ /dev/null
@@ -1,51 +0,0 @@
-# All Rights Reserved.
-#
-#    Licensed under the Apache License, Version 2.0 (the "License"); you may
-#    not use this file except in compliance with the License. You may obtain
-#    a copy of the License at
-#
-#         http://www.apache.org/licenses/LICENSE-2.0
-#
-#    Unless required by applicable law or agreed to in writing, software
-#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-#    License for the specific language governing permissions and limitations
-#    under the License.
-
-from tempest.common import commands
-from tempest import config
-from tempest.openstack.common import log as logging
-
-CONF = config.CONF
-LOG = logging.getLogger(__name__)
-
-TABLES = ['filter', 'nat', 'mangle']
-
-
-def log_ip_ns():
-    if not CONF.debug.enable:
-        return
-    LOG.info("Host Addr:\n" + commands.ip_addr_raw())
-    LOG.info("Host Route:\n" + commands.ip_route_raw())
-    for table in TABLES:
-        LOG.info('Host %s table:\n%s', table, commands.iptables_raw(table))
-    ns_list = commands.ip_ns_list()
-    LOG.info("Host ns list" + str(ns_list))
-    for ns in ns_list:
-        LOG.info("ns(%s) Addr:\n%s", ns, commands.ip_ns_addr(ns))
-        LOG.info("ns(%s) Route:\n%s", ns, commands.ip_ns_route(ns))
-        for table in TABLES:
-            LOG.info('ns(%s) table(%s):\n%s', ns, table,
-                     commands.iptables_ns(ns, table))
-
-
-def log_ovs_db():
-    if not CONF.debug.enable or not CONF.service_available.neutron:
-        return
-    db_dump = commands.ovs_db_dump()
-    LOG.info("OVS DB:\n" + db_dump)
-
-
-def log_net_debug():
-    log_ip_ns()
-    log_ovs_db()
diff --git a/tempest/config.py b/tempest/config.py
index 03346c9..cc6d626 100644
--- a/tempest/config.py
+++ b/tempest/config.py
@@ -926,9 +926,6 @@
                            title="Debug System")
 
 DebugGroup = [
-    cfg.BoolOpt('enable',
-                default=True,
-                help="Enable diagnostic commands"),
     cfg.StrOpt('trace_requests',
                default='',
                help="""A regex to determine which requests should be traced.
diff --git a/tempest/scenario/manager.py b/tempest/scenario/manager.py
index e46ec6d..ca89a51 100644
--- a/tempest/scenario/manager.py
+++ b/tempest/scenario/manager.py
@@ -24,7 +24,6 @@
 from tempest import auth
 from tempest import clients
 from tempest.common import credentials
-from tempest.common import debug
 from tempest.common.utils import data_utils
 from tempest.common.utils.linux import remote_client
 from tempest import config
@@ -326,7 +325,6 @@
             linux_client.validate_authentication()
         except Exception:
             LOG.exception('Initializing SSH connection to %s failed' % ip)
-            debug.log_net_debug()
             # If we don't explicitely set for which servers we want to
             # log the console output then all the servers will be logged.
             # See the definition of _log_console_output()
@@ -400,7 +398,6 @@
         # network debug is called as part of ssh init
         if not isinstance(exc, exceptions.SSHTimeout):
             LOG.debug('Network information on a devstack host')
-            debug.log_net_debug()
 
     def create_server_snapshot(self, server, name=None):
         # Glance client
@@ -510,15 +507,12 @@
                                        username,
                                        private_key,
                                        should_connect=should_connect)
-        except Exception as e:
+        except Exception:
             ex_msg = 'Public network connectivity check failed'
             if msg:
                 ex_msg += ": " + msg
             LOG.exception(ex_msg)
             self._log_console_output(servers)
-            # network debug is called as part of ssh init
-            if not isinstance(e, exceptions.SSHTimeout):
-                debug.log_net_debug()
             raise
 
     def create_floating_ip(self, thing, pool_name=None):
diff --git a/tempest/scenario/test_network_basic_ops.py b/tempest/scenario/test_network_basic_ops.py
index 98a059f..8f71b6e 100644
--- a/tempest/scenario/test_network_basic_ops.py
+++ b/tempest/scenario/test_network_basic_ops.py
@@ -18,7 +18,6 @@
 
 import testtools
 
-from tempest.common import debug
 from tempest.common.utils import data_utils
 from tempest import config
 from tempest import exceptions
@@ -325,7 +324,6 @@
                 LOG.exception("Unable to access {dest} via ssh to "
                               "floating-ip {src}".format(dest=remote_ip,
                                                          src=floating_ip))
-                debug.log_ip_ns()
                 raise
 
     @test.attr(type='smoke')
diff --git a/tempest/scenario/test_security_groups_basic_ops.py b/tempest/scenario/test_security_groups_basic_ops.py
index 7e6805c..d8f7a26 100644
--- a/tempest/scenario/test_security_groups_basic_ops.py
+++ b/tempest/scenario/test_security_groups_basic_ops.py
@@ -14,7 +14,6 @@
 #    under the License.
 
 from tempest import clients
-from tempest.common import debug
 from tempest.common.utils import data_utils
 from tempest import config
 from tempest.openstack.common import log as logging
@@ -334,15 +333,8 @@
             msg = "Timed out waiting for %s to become reachable" % ip
         else:
             msg = "%s is reachable" % ip
-        try:
-            self.assertTrue(self._check_remote_connectivity(access_point, ip,
-                                                            should_succeed),
-                            msg)
-        except test.exceptions.SSHTimeout:
-            raise
-        except Exception:
-            debug.log_net_debug()
-            raise
+        self.assertTrue(self._check_remote_connectivity(access_point, ip,
+                                                        should_succeed), msg)
 
     def _test_in_tenant_block(self, tenant):
         access_point_ssh = self._connect_to_access_point(tenant)
diff --git a/tempest/tests/common/test_debug.py b/tempest/tests/common/test_debug.py
deleted file mode 100644
index 8a880f2..0000000
--- a/tempest/tests/common/test_debug.py
+++ /dev/null
@@ -1,122 +0,0 @@
-# Copyright 2014 NEC Corporation.
-# All Rights Reserved.
-#
-#    Licensed under the Apache License, Version 2.0 (the "License"); you may
-#    not use this file except in compliance with the License. You may obtain
-#    a copy of the License at
-#
-#         http://www.apache.org/licenses/LICENSE-2.0
-#
-#    Unless required by applicable law or agreed to in writing, software
-#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-#    License for the specific language governing permissions and limitations
-#    under the License.
-
-import mock
-
-from tempest.common import debug
-from tempest import config
-from tempest.openstack.common.fixture import mockpatch
-from tempest import test
-from tempest.tests import base
-from tempest.tests import fake_config
-
-
-class TestDebug(base.TestCase):
-
-    def setUp(self):
-        super(TestDebug, self).setUp()
-        self.useFixture(fake_config.ConfigFixture())
-        self.stubs.Set(config, 'TempestConfigPrivate', fake_config.FakePrivate)
-
-        common_pre = 'tempest.common.commands'
-        self.ip_addr_raw_mock = self.patch(common_pre + '.ip_addr_raw')
-        self.ip_route_raw_mock = self.patch(common_pre + '.ip_route_raw')
-        self.iptables_raw_mock = self.patch(common_pre + '.iptables_raw')
-        self.ip_ns_list_mock = self.patch(common_pre + '.ip_ns_list')
-        self.ip_ns_addr_mock = self.patch(common_pre + '.ip_ns_addr')
-        self.ip_ns_route_mock = self.patch(common_pre + '.ip_ns_route')
-        self.iptables_ns_mock = self.patch(common_pre + '.iptables_ns')
-        self.ovs_db_dump_mock = self.patch(common_pre + '.ovs_db_dump')
-
-        self.log_mock = self.patch('tempest.common.debug.LOG')
-
-    def test_log_ip_ns_debug_disabled(self):
-        self.useFixture(mockpatch.PatchObject(test.CONF.debug,
-                                              'enable', False))
-        debug.log_ip_ns()
-        self.assertFalse(self.ip_addr_raw_mock.called)
-        self.assertFalse(self.log_mock.info.called)
-
-    def test_log_ip_ns_debug_enabled(self):
-        self.useFixture(mockpatch.PatchObject(test.CONF.debug,
-                                              'enable', True))
-
-        self.ip_ns_list_mock.return_value = [1, 2]
-
-        debug.log_ip_ns()
-        self.ip_addr_raw_mock.assert_called_with()
-        self.assertTrue(self.log_mock.info.called)
-        self.ip_route_raw_mock.assert_called_with()
-        self.assertEqual(len(debug.TABLES), self.iptables_raw_mock.call_count)
-        for table in debug.TABLES:
-            self.assertIn(mock.call(table),
-                          self.iptables_raw_mock.call_args_list)
-
-        self.ip_ns_list_mock.assert_called_with()
-        self.assertEqual(len(self.ip_ns_list_mock.return_value),
-                         self.ip_ns_addr_mock.call_count)
-        self.assertEqual(len(self.ip_ns_list_mock.return_value),
-                         self.ip_ns_route_mock.call_count)
-        for ns in self.ip_ns_list_mock.return_value:
-            self.assertIn(mock.call(ns),
-                          self.ip_ns_addr_mock.call_args_list)
-            self.assertIn(mock.call(ns),
-                          self.ip_ns_route_mock.call_args_list)
-
-        self.assertEqual(len(debug.TABLES) *
-                         len(self.ip_ns_list_mock.return_value),
-                         self.iptables_ns_mock.call_count)
-        for ns in self.ip_ns_list_mock.return_value:
-            for table in debug.TABLES:
-                self.assertIn(mock.call(ns, table),
-                              self.iptables_ns_mock.call_args_list)
-
-    def test_log_ovs_db_debug_disabled(self):
-        self.useFixture(mockpatch.PatchObject(test.CONF.debug,
-                                              'enable', False))
-        self.useFixture(mockpatch.PatchObject(test.CONF.service_available,
-                                              'neutron', False))
-        debug.log_ovs_db()
-        self.assertFalse(self.ovs_db_dump_mock.called)
-
-        self.useFixture(mockpatch.PatchObject(test.CONF.debug,
-                                              'enable', True))
-        self.useFixture(mockpatch.PatchObject(test.CONF.service_available,
-                                              'neutron', False))
-        debug.log_ovs_db()
-        self.assertFalse(self.ovs_db_dump_mock.called)
-
-        self.useFixture(mockpatch.PatchObject(test.CONF.debug,
-                                              'enable', False))
-        self.useFixture(mockpatch.PatchObject(test.CONF.service_available,
-                                              'neutron', True))
-        debug.log_ovs_db()
-        self.assertFalse(self.ovs_db_dump_mock.called)
-
-    def test_log_ovs_db_debug_enabled(self):
-        self.useFixture(mockpatch.PatchObject(test.CONF.debug,
-                                              'enable', True))
-        self.useFixture(mockpatch.PatchObject(test.CONF.service_available,
-                                              'neutron', True))
-        debug.log_ovs_db()
-        self.ovs_db_dump_mock.assert_called_with()
-
-    def test_log_net_debug(self):
-        self.log_ip_ns_mock = self.patch('tempest.common.debug.log_ip_ns')
-        self.log_ovs_db_mock = self.patch('tempest.common.debug.log_ovs_db')
-
-        debug.log_net_debug()
-        self.log_ip_ns_mock.assert_called_with()
-        self.log_ovs_db_mock.assert_called_with()
diff --git a/tempest/tests/test_commands.py b/tempest/tests/test_commands.py
deleted file mode 100644
index 2379741..0000000
--- a/tempest/tests/test_commands.py
+++ /dev/null
@@ -1,89 +0,0 @@
-# Copyright 2014 NEC Corporation.  All rights reserved.
-#
-#    Licensed under the Apache License, Version 2.0 (the "License"); you may
-#    not use this file except in compliance with the License. You may obtain
-#    a copy of the License at
-#
-#         http://www.apache.org/licenses/LICENSE-2.0
-#
-#    Unless required by applicable law or agreed to in writing, software
-#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-#    License for the specific language governing permissions and limitations
-#    under the License.
-
-import subprocess
-
-import mock
-
-from tempest.common import commands
-from tempest.tests import base
-
-
-class TestCommands(base.TestCase):
-
-    def setUp(self):
-        super(TestCommands, self).setUp()
-        self.subprocess_args = {'stdout': subprocess.PIPE,
-                                'stderr': subprocess.STDOUT}
-
-    @mock.patch('subprocess.Popen')
-    def test_ip_addr_raw(self, mock):
-        expected = ['/usr/bin/sudo', '-n', 'ip', 'a']
-        commands.ip_addr_raw()
-        mock.assert_called_once_with(expected, **self.subprocess_args)
-
-    @mock.patch('subprocess.Popen')
-    def test_ip_route_raw(self, mock):
-        expected = ['/usr/bin/sudo', '-n', 'ip', 'r']
-        commands.ip_route_raw()
-        mock.assert_called_once_with(expected, **self.subprocess_args)
-
-    @mock.patch('subprocess.Popen')
-    def test_ip_ns_raw(self, mock):
-        expected = ['/usr/bin/sudo', '-n', 'ip', 'netns', 'list']
-        commands.ip_ns_raw()
-        mock.assert_called_once_with(expected, **self.subprocess_args)
-
-    @mock.patch('subprocess.Popen')
-    def test_iptables_raw(self, mock):
-        table = 'filter'
-        expected = ['/usr/bin/sudo', '-n', 'iptables', '--line-numbers',
-                    '-L', '-nv', '-t',
-                    '%s' % table]
-        commands.iptables_raw(table)
-        mock.assert_called_once_with(expected, **self.subprocess_args)
-
-    @mock.patch('subprocess.Popen')
-    def test_ip_ns_list(self, mock):
-        expected = ['/usr/bin/sudo', '-n', 'ip', 'netns', 'list']
-        commands.ip_ns_list()
-        mock.assert_called_once_with(expected, **self.subprocess_args)
-
-    @mock.patch('subprocess.Popen')
-    def test_ip_ns_addr(self, mock):
-        ns_list = commands.ip_ns_list()
-        for ns in ns_list:
-            expected = ['/usr/bin/sudo', '-n', 'ip', 'netns', 'exec', ns,
-                        'ip', 'a']
-            commands.ip_ns_addr(ns)
-            mock.assert_called_once_with(expected, **self.subprocess_args)
-
-    @mock.patch('subprocess.Popen')
-    def test_ip_ns_route(self, mock):
-        ns_list = commands.ip_ns_list()
-        for ns in ns_list:
-            expected = ['/usr/bin/sudo', '-n', 'ip', 'netns', 'exec', ns,
-                        'ip', 'r']
-            commands.ip_ns_route(ns)
-            mock.assert_called_once_with(expected, **self.subprocess_args)
-
-    @mock.patch('subprocess.Popen')
-    def test_iptables_ns(self, mock):
-        table = 'filter'
-        ns_list = commands.ip_ns_list()
-        for ns in ns_list:
-            expected = ['/usr/bin/sudo', '-n', 'ip', 'netns', 'exec', ns,
-                        'iptables', '-v', '-S', '-t', table]
-            commands.iptables_ns(ns, table)
-            mock.assert_called_once_with(expected, **self.subprocess_args)