diff --git a/defaults/main.yml b/defaults/main.yml
index 6399322f..35185b80 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -202,6 +202,9 @@ openstack_hosts_power_tool_enable: >-
 # Keep a history of systemd journals on disk after reboots
 openstack_host_keep_journals: true
 # Define arbitrary configration for systemd-journald
+# openstack_hosts_journald_config:
+#   SystemMaxFileSize: 100M
+#   SystemMaxUse: 4G
 openstack_hosts_journald_config: {}
 # Enable/Disable the yum fastestmirror plugin
 openstack_hosts_enable_yum_fastestmirror: true