4.8.2. Customizing an instance by using metadata
You can use instance metadata to specify the properties of an instance in the instance launch command.
Procedure
Launch an instance with the
--property <key=value>option. For example, to mark the instance as a webserver, set the following property:$ openstack server create \ --image rhel8 \ --flavor default \ --property role=webservers \ --wait web-server-instance
Optional: Add an additional property to the instance after it is created, for example:
$ openstack server set \ --property region=emea \ --wait web-server-instance
