diff --git a/ironic/conductor/manager.py b/ironic/conductor/manager.py
index 633c6c2834..45a384715c 100644
--- a/ironic/conductor/manager.py
+++ b/ironic/conductor/manager.py
@@ -164,8 +164,8 @@ class ConductorManager(base_manager.BaseConductorManager):
 
         """
         LOG.debug("RPC change_node_power_state called for node %(node)s. "
-                  "The desired new state is %(state)s."
-                  % {'node': node_id, 'state': new_state})
+                  "The desired new state is %(state)s.",
+                  {'node': node_id, 'state': new_state})
 
         with task_manager.acquire(context, node_id, shared=False,
                                   purpose='changing node power state') as task:
@@ -1580,8 +1580,7 @@ class ConductorManager(base_manager.BaseConductorManager):
                  async task
         """
         LOG.debug('RPC set_console_mode called for node %(node)s with '
-                  'enabled %(enabled)s' % {'node': node_id,
-                                           'enabled': enabled})
+                  'enabled %(enabled)s', {'node': node_id, 'enabled': enabled})
 
         with task_manager.acquire(context, node_id, shared=False,
                                   purpose='setting console mode') as task:
@@ -2526,8 +2525,8 @@ def _do_inspect_hardware(task):
 
     if new_state == states.MANAGEABLE:
         task.process_event('done')
-        LOG.info(_LI('Successfully inspected node %(node)s')
-                 % {'node': node.uuid})
+        LOG.info(_LI('Successfully inspected node %(node)s'),
+                 {'node': node.uuid})
     elif new_state != states.INSPECTING:
         error = (_("During inspection, driver returned unexpected "
                    "state %(state)s") % {'state': new_state})
diff --git a/ironic/drivers/modules/ilo/common.py b/ironic/drivers/modules/ilo/common.py
index f48407a705..32c74ecdca 100644
--- a/ironic/drivers/modules/ilo/common.py
+++ b/ironic/drivers/modules/ilo/common.py
@@ -708,7 +708,7 @@ def verify_image_checksum(image_location, expected_checksum):
         LOG.error(_LE("Error opening file: %(file)s"),
                   {'file': image_location})
         raise exception.ImageRefValidationFailed(image_href=image_location,
-                                                 reason=six.text_type(e))
+                                                 reason=e)
 
     if actual_checksum != expected_checksum:
         msg = (_('Error verifying image checksum. Image %(image)s failed to '
diff --git a/ironic/drivers/modules/seamicro.py b/ironic/drivers/modules/seamicro.py
index 02b05378e1..a57c7a1639 100644
--- a/ironic/drivers/modules/seamicro.py
+++ b/ironic/drivers/modules/seamicro.py
@@ -24,7 +24,6 @@ import re
 from oslo_log import log as logging
 from oslo_service import loopingcall
 from oslo_utils import importutils
-import six
 from six.moves.urllib import parse as urlparse
 
 from ironic.common import boot_devices
@@ -564,7 +563,7 @@ class Management(base.ManagementInterface):
             LOG.error(_LE("Seamicro set boot device failed for node "
                           "%(node)s with the following error: %(error)s"),
                       {'node': task.node.uuid, 'error': ex})
-            raise exception.IronicException(message=six.text_type(ex))
+            raise exception.IronicException(ex)
 
     def get_boot_device(self, task):
         """Get the current boot device for the task's node.