diff --git a/installers/openstack/ansible.cfg b/installers/openstack/ansible.cfg
new file mode 100644
index 0000000..b85fcb9
--- /dev/null
+++ b/installers/openstack/ansible.cfg
@@ -0,0 +1,17 @@
+#   Copyright 2020 British Telecommunications plc
+#
+#   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.
+#   Author: Antonio Marsico (antonio.marsico@bt.com)
+
+[defaults]
+host_key_checking = False