diff --git a/etc/ironic/ironic.conf.sample b/etc/ironic/ironic.conf.sample
index 8b524636bf..405a66003f 100644
--- a/etc/ironic/ironic.conf.sample
+++ b/etc/ironic/ironic.conf.sample
@@ -463,7 +463,7 @@
 
 # List of package logging levels in logger=LEVEL pairs. This
 # option is ignored if log_config_append is set. (list value)
-#default_log_levels = amqp=WARNING,amqplib=WARNING,qpid.messaging=INFO,oslo_messaging=INFO,sqlalchemy=WARNING,stevedore=INFO,eventlet.wsgi.server=INFO,iso8601=WARNING,paramiko=WARNING,requests=WARNING,neutronclient=WARNING,glanceclient=WARNING,urllib3.connectionpool=WARNING,keystonemiddleware.auth_token=INFO,keystoneauth.session=INFO
+#default_log_levels = amqp=WARNING,amqplib=WARNING,qpid.messaging=INFO,oslo_messaging=INFO,oslo.messaging=INFO,sqlalchemy=WARNING,stevedore=INFO,eventlet.wsgi.server=INFO,iso8601=WARNING,paramiko=WARNING,requests=WARNING,neutronclient=WARNING,glanceclient=WARNING,urllib3.connectionpool=WARNING,keystonemiddleware.auth_token=INFO,keystoneauth.session=INFO
 
 # Enables or disables publication of error events. (boolean
 # value)
diff --git a/ironic/conf/opts.py b/ironic/conf/opts.py
index c670ccb4ba..bf522c17b6 100644
--- a/ironic/conf/opts.py
+++ b/ironic/conf/opts.py
@@ -88,7 +88,10 @@ def update_opt_defaults():
             'amqp=WARNING',
             'amqplib=WARNING',
             'qpid.messaging=INFO',
+            # TODO(therve): when bug #1685148 is fixed in oslo.messaging, we
+            # should be able to remove one of those 2 lines.
             'oslo_messaging=INFO',
+            'oslo.messaging=INFO',
             'sqlalchemy=WARNING',
             'stevedore=INFO',
             'eventlet.wsgi.server=INFO',
diff --git a/releasenotes/notes/messaging-log-level-5f870ea69db53d26.yaml b/releasenotes/notes/messaging-log-level-5f870ea69db53d26.yaml
new file mode 100644
index 0000000000..60bcde7eff
--- /dev/null
+++ b/releasenotes/notes/messaging-log-level-5f870ea69db53d26.yaml
@@ -0,0 +1,4 @@
+---
+fixes:
+  - Fixes an issue where oslo.messaging DEBUG logs were being logged when, by
+    default, they shouldn't have been.