diff --git a/tempest/config.py b/tempest/config.py
index 0fcc71c..9d7526a 100644
--- a/tempest/config.py
+++ b/tempest/config.py
@@ -418,7 +418,11 @@
                help="Specify destination host for live-migration and cold"
                     " migration. If option is not set tests will use host"
                     " automatically."),
-
+    cfg.StrOpt('target_hosts_to_avoid',
+               default='-ironic',
+               help="When aggregating available hypervisors for testing,"
+               " avoid migrating to and booting any test VM on hosts with"
+               " a name that matches the provided pattern"),
 ]
 
 placement_group = cfg.OptGroup(name='placement',