classes: - service.neutron.control.single parameters: neutron: server: database: host: ${_param:single_address} mysql: server: database: neutron: encoding: utf8 users: - name: neutron password: ${_param:mysql_neutron_password} host: '%' rights: all - name: neutron password: ${_param:mysql_neutron_password} host: ${_param:single_address} rights: all