--- features: - OpenStack services have been set to communicate with RabbitMQ using SSL by default. This feature may be disabled by setting ``rabbit_use_ssl`` to ``false`` in ``/etc/openstack_deploy/user_variables.yml``. The default behaviour will be to use a self-signed certificate for communications. This can be changed by the procedure referred to in `the SSL documentation `_. upgrade: - OpenStack services have been set to communicate with RabbitMQ using SSL by default. This feature may be disabled by setting ``rabbit_use_ssl`` to ``false`` in ``/etc/openstack_deploy/user_variables.yml``. The default behaviour will be to use a self-signed certificate for communications. This can be changed by the procedure referred to in `the SSL documentation `_. security: - OpenStack services have been set to communicate with RabbitMQ using SSL by default. This feature may be disabled by setting ``rabbit_use_ssl`` to ``false`` in ``/etc/openstack_deploy/user_variables.yml``. The default behaviour will be to use a self-signed certificate for communications. This can be changed by the procedure referred to in `the SSL documentation `_.